Re: 200-600x slower Dlang performance with nested foreach loop

2021-01-31 Thread a11e99z via Digitalmars-d-learn

On Sunday, 31 January 2021 at 16:50:15 UTC, methonash wrote:
What confuses me, at this point, is this: I originally wrote 
the D code using foreach in this style:


foreach( i, ref parentString; strings )
foreach( j, ref childString; strings[ i + 1 .. $ ] )

Essentially, the value of j printed to stdout should always be 
larger than the value of i.


j is counted from current begginning: from 0
strings[i+1..$][0] - its right behaviour



Re: Garbage Collection Issue

2020-06-01 Thread a11e99z via Digitalmars-d-learn
On Sunday, 31 May 2020 at 16:57:06 UTC, Steven Schveighoffer 
wrote:


I can't imagine much of druntime working at all without TLS. 
Indeed, it is a requirement these days.




TLS is evil for async/await when any thread can execute any fiber 
(case where fiber tied to thread is wrong/dead version of 
async/await cuz 1st thread has 1000 fibers and 2nd only 10)


Re: want to know precise GC benchmarks

2019-10-02 Thread a11e99z via Digitalmars-d-learn
On Wednesday, 2 October 2019 at 06:41:28 UTC, Rainer Schuetze 
wrote:




thanks for the detailed answer



Re: want to know precise GC benchmarks

2019-10-01 Thread a11e99z via Digitalmars-d-learn

On Tuesday, 1 October 2019 at 16:12:18 UTC, a11e99z wrote:
does anybody some kind of benchmark to test conservative and 
precise GC?

precise GC is better or not? is STW improving?


and another question about GC and app parameters:
program.exe “–DRT-gcopt=gc:precise parallel:4” 
“–DRT-scanDataSeg=precise” output.data

are this 2 -DRT params combined or overwriting each other?
link to doc for DRT+GC 
https://dlang.org/spec/garbage.html#gc_config


I know about rt_options[] but asking about program args

why I want to know such info?
CodinGame sometimes use time-limit for bot move for example 
100ms, and bot will be disqualified in case no answer


want to know precise GC benchmarks

2019-10-01 Thread a11e99z via Digitalmars-d-learn
does anybody some kind of benchmark to test conservative and 
precise GC?

precise GC is better or not? is STW improving?


Re: Packaging and Distributing Dlang Applications with GtkD Dependency?

2019-09-25 Thread a11e99z via Digitalmars-d-learn
On Wednesday, 25 September 2019 at 12:04:16 UTC, Ron Tarrant 
wrote:

On Wednesday, 25 September 2019 at 11:50:58 UTC, a11e99z wrote:
On Wednesday, 25 September 2019 at 11:46:04 UTC, Ron Tarrant 
wrote:

Hi y'all,

What I'm looking for is a system for bundling dlang apps and 
their dependencies for distribution to end users. Hopefully, 
this bundler will:


- install the app in an appropriate place (like C:\Program 
Files\,
- install libraries/dependencies (such as GtkD) also in an 
appropriate place,
- make any modifications to the system PATH that may be 
necessary for the app to run, and
- handle any other roadblocks that will keep the user from 
using the app.


Similarly, on Linux or other UNIX-alikes, a breakdown of how to 
use apt or something similar to do the same so the user can 
(for instance) just do:

apt-get  
to install.


so u need installers/installation program
https://en.wikipedia.org/wiki/List_of_installation_software

well, a long-long time ago I used InstallShield & Wix Toolset for 
Windows only.

I know no one that works with Linux package systems.


Re: Packaging and Distributing Dlang Applications with GtkD Dependency?

2019-09-25 Thread a11e99z via Digitalmars-d-learn
On Wednesday, 25 September 2019 at 11:46:04 UTC, Ron Tarrant 
wrote:

Hi y'all,

I've been Googling how to do this, but coming up with nothing 
definitive. Are there any articles for how to do this for:


Windows?
Linux?
other UNIX-alike OSs?


UPX?
https://en.wikipedia.org/wiki/UPX
https://linux.die.net/man/1/upx


Re: How to force an array literal into a read-only data segment?

2019-09-12 Thread a11e99z via Digitalmars-d-learn

On Thursday, 12 September 2019 at 07:04:19 UTC, Max Samukha wrote:


How to achieve the same for an array literal? The closest I 
could come:


enum immutable(int[3]) _tmp = [1, 2, 3];
__gshared a = _tmp.ptr;

Is it possible to force the array into rodata?


https://p0nce.github.io/d-idioms/#Precomputed-tables-at-compile-time-through-CTFE

static immutable(int[3]) _tmp = [1, 2, 3];
?


Re: LDC asm for int128

2019-09-10 Thread a11e99z via Digitalmars-d-learn

On Tuesday, 10 September 2019 at 06:18:05 UTC, Newbie2019 wrote:
I want to translate this c code into d (build with ldc), so I 
can use -flto and inline with other code.


uint64_t _wymum(uint64_t A, uint64_t B){
__uint128_t r = A ;
r *= B;
return  (r>>64)^r;
}

Do i need ASM or is there a easy way to implement it ?


https://forum.dlang.org/post/ighiwexofvdqbuqeq...@forum.dlang.org


Re: It there a way to get this to compile?

2019-09-09 Thread a11e99z via Digitalmars-d-learn

On Monday, 9 September 2019 at 19:08:17 UTC, WhatMeWorry wrote:


struct FoundationPile {
Card[] up;// all cards are face up on the Foundation
}

FoundationPile[4] foundations;

static if(true) {
int r = 2;
int c = 40;
static foreach(i ; foundations) {
immutable string brackets = "\033[" ~ to!string(r) ~ 
";" ~ to!string(c) ~ "H";			

c = c + 10;   // line 155
}   
}


NB
  dont use name "i" for foreach/ranges,
  foreach can be used with index too,
  use "el" as "element" or "it" as "iterator" or just "something"


static if(true) {
enum r = 2, c = 40; // bad names too
static foreach( idx, el; foundations) {
immutable string brackets = "\033[" ~ to!string(r) ~ 
";" ~ to!string(c + idx*10) ~ "H";			

}   
}




Re: Throwing from a lambda isn't supported by the compiler

2019-09-09 Thread a11e99z via Digitalmars-d-learn

On Monday, 9 September 2019 at 09:14:08 UTC, Andre Pany wrote:

I noticed, that I cannot throw from the lambda expression:
  Error: expression expected, not throw
but have to use the longer syntax () {throw new Exception();}

---
void foo(void function() e){}

void main()
{
foo(
() => throw new Exception()
);
}
---

The shorter lambda syntax would be more readable in my case.
Is there a reason why it isn't allowed or should I create an
enhancement request?



and next code too. C# code good is it
int func( bool ok ) {
return ok ? 123 : throw new Exception( "oops 123");
}

cuz throwing exception ever is not compatible with any return 
type so I dont see reasons do not allow such expressions


Re: C++ vs D: Default param values and struct to array casting

2019-09-06 Thread a11e99z via Digitalmars-d-learn

On Friday, 6 September 2019 at 09:14:31 UTC, Andrew Edwards wrote:

C++ allows the for following:

struct Demo
{
float a, b, c, d;
Demo() { a = b = c = d = 0.0f; }
Demo(float _a, float _b, float _c, float _d) {
a = _a;
b = _b;
c = _c;
d = _d;
}
float  operator[] (size_t i) const { return ()[i]; } //[3]
float& operator[] (size_t i) { return ()[i]; } //[4]
}



https://dlang.org/spec/simd.html

also probably u can do https://run.dlang.io/is/WMQE93



Re: How stdin.readf ignore space char?

2019-09-03 Thread a11e99z via Digitalmars-d-learn

On Tuesday, 3 September 2019 at 13:25:30 UTC, lili wrote:

On Tuesday, 3 September 2019 at 13:21:16 UTC, a11e99z wrote:

On Tuesday, 3 September 2019 at 12:55:29 UTC, lili wrote:


string d = "3.43.3 ";
double a;
double b;

//formattedRead(d,"%f %f", , );

d.readf!" %s %s"(a,b);//hug
writeln(a,b);


and this too

string ds = "1.1 2.2 3.3";
double[] darr;
ds.formattedRead!"%( %s%)"( darr );
darr.writeln;


Re: How stdin.readf ignore space char?

2019-09-03 Thread a11e99z via Digitalmars-d-learn

On Tuesday, 3 September 2019 at 12:55:29 UTC, lili wrote:

Hi guys:

   input is two line, first line is a number n and second line 
is n float point number,

e.g. 3
 1.1 2.2 3.3
how use stdin.readf get all number.


u can read array this way too

auto darr = readln.split.map!(x => x.to!double).array;
darr.writeln;




Re: How stdin.readf ignore space char?

2019-09-03 Thread a11e99z via Digitalmars-d-learn

On Tuesday, 3 September 2019 at 12:55:29 UTC, lili wrote:

Hi guys:

   input is two line, first line is a number n and second line 
is n float point number,

e.g. 3
 1.1 2.2 3.3
how use stdin.readf get all number.


https://dlang.org/library/std/stdio/readf.html
see example


Re: Deactivate windows MessageBox dialog on exception

2019-08-28 Thread a11e99z via Digitalmars-d-learn

On Wednesday, 28 August 2019 at 12:19:54 UTC, Andre Pany wrote:

Hi,

I call another process using function pipeShell and 
Redirect.all.




import std;

void main()
{
auto p = pipeShell("a.exe", Redirect.all);
p.stdin.writeln("e1");
p.stdin.writeln("10");
p.stdin.writeln("e2");
p.stdin.writeln("9");

p.stdin.flush();
p.stdout.readln.writeln;

import core.thread: Thread;
import core.time: seconds;

Thread.sleep(2.seconds);
p.stdin.close;
p.stderr.byLineCopy.writeln;
Thread.sleep(1.seconds);
try {
p.pid.kill; // Windows exception here "Access denied"
p.pid.wait; // but no more MessageBox
} catch (Throwable) { }
}



Re: Deactivate windows MessageBox dialog on exception

2019-08-28 Thread a11e99z via Digitalmars-d-learn

On Wednesday, 28 August 2019 at 12:19:54 UTC, Andre Pany wrote:




and try to use
https://docs.microsoft.com/en-us/windows/win32/api/errhandlingapi/nf-errhandlingapi-seterrormode
 SEM_FAILCRITICALERRORS
for mother process and child process will inherit it




Re: Deactivate windows MessageBox dialog on exception

2019-08-28 Thread a11e99z via Digitalmars-d-learn

On Wednesday, 28 August 2019 at 12:19:54 UTC, Andre Pany wrote:

Hi,

I call another process using function pipeShell and 
Redirect.all.


In case the child process(also D application) throws an 
exception (str to int conversion exception), the child process 
shows a message box on windows.




1) mother process "b" shouldn't terminates/close_pipes early than 
"a" cuz lines 690 checks stderr is valid, if no then MessageBox 
is showing.
2) if "a" is wrong or hang just terminate it, result already 
known.
3) also u can try redirect not all pipes just stdout/stdin, 
stderr for "a" probably will be working to mother console.


Re: Sort Associative Array by Key

2019-08-28 Thread a11e99z via Digitalmars-d-learn

On Tuesday, 27 August 2019 at 20:35:16 UTC, bachmeier wrote:

On Tuesday, 27 August 2019 at 20:14:21 UTC, Machine Code wrote:


It isn't really hard:


It really is hard. foo.byPair.array.sort!((a, b) => a.key < 
b.key).map!(a => a.value); is a lot to digest for someone 
learning the language. There's a big difference between not 
being hard for someone that understands what each piece does 
and not being hard for someone new to D. At a minimum, it would 
help to write it


foo.byPair
 .array
 .sort!((a, b) => a.key < b.key)
 .map!(a => a.value);


I wrote expression with string lambdas for one purpose:
when u see very simple beauty thing that is working and u totally 
doesn't understand how exactly, ur curiosity should do the rest 
of the work. it's worth sorting out.

if man wanted just do his job, he got this too.


Re: Input/Output multiple values from function

2019-08-28 Thread a11e99z via Digitalmars-d-learn

On Wednesday, 28 August 2019 at 05:17:28 UTC, Jabari Zakiya wrote:

On Wednesday, 28 August 2019 at 04:39:23 UTC, Mike Parker wrote:
On Wednesday, 28 August 2019 at 04:19:49 UTC, Jabari Zakiya 
wrote:
I have a function (say func1) that takes 1 input value (an 
integer number) and outputs 4 values (2 integers and 2 arrays 
of integers).


Then inside another function (say func2) I provide the 1 
input to func1 and then want to assign its 4 output values to 
their appropriate final variables that will use them.




https://dlang.org/library/std/typecons/tuple.expand.html ?



Re: stdin/stdout and flush

2019-08-27 Thread a11e99z via Digitalmars-d-learn

On Tuesday, 27 August 2019 at 21:01:58 UTC, Andre Pany wrote:

On Tuesday, 27 August 2019 at 20:45:44 UTC, a11e99z wrote:

On Tuesday, 27 August 2019 at 20:09:34 UTC, Andre Pany wrote:




"b" should send data in loop too, then "a" will work ok.
do u still hack CodinGame? :)


Re: stdin/stdout and flush

2019-08-27 Thread a11e99z via Digitalmars-d-learn

On Tuesday, 27 August 2019 at 21:28:05 UTC, a11e99z wrote:

On Tuesday, 27 August 2019 at 21:01:58 UTC, Andre Pany wrote:

On Tuesday, 27 August 2019 at 20:45:44 UTC, a11e99z wrote:

On Tuesday, 27 August 2019 at 20:09:34 UTC, Andre Pany wrote:


what result u expecting?

then u send from "b" p.stdout.readln(); that is read as 2nd


its not sent, "b" just read from pipe
pipe closed and null (no data) come to "a"




Re: stdin/stdout and flush

2019-08-27 Thread a11e99z via Digitalmars-d-learn

On Tuesday, 27 August 2019 at 21:01:58 UTC, Andre Pany wrote:

On Tuesday, 27 August 2019 at 20:45:44 UTC, a11e99z wrote:

On Tuesday, 27 August 2019 at 20:09:34 UTC, Andre Pany wrote:


what result u expecting?

u send from "b": e1 10 e2 9
"a" read it. 1st loop finished.
then u send from "b" p.stdout.readln(); that is read as 2nd 
enemy1=null
and finally sleep and exit from b.main where pipe is closed and 
"a" read null again (no data)

dist1 = null.to!int => error




Re: stdin/stdout and flush

2019-08-27 Thread a11e99z via Digitalmars-d-learn

On Tuesday, 27 August 2019 at 20:09:34 UTC, Andre Pany wrote:


This applications will be called by a second application:
import std;
void main() {
auto p = pipeShell("a", Redirect.all);
p.stdin.writeln("e1");
p.stdin.writeln("10");
p.stdin.writeln("e2");
p.stdin.writeln("9");
p.stdin.flush();
p.stdout.readln();
}

In application a.d the first "while round" will succeed as 
expected. But in the second "while round" the readln does not 
wait until there is an input but gets an empty string. The 
to!int will therefore throw an exception.


Why does the readln returns an empty string in the second run 
and does not wait on an input?




probably cuz no second "send round" in b.d.
or u mean second half-round "e2,9"?


Re: Structure of Arrays vs Array of Structures

2019-08-26 Thread a11e99z via Digitalmars-d-learn

On Monday, 26 August 2019 at 09:58:30 UTC, Per Nordlöw wrote:

On Monday, 26 August 2019 at 09:54:30 UTC, Per Nordlöw wrote:
I have made some significant optimizations with regards to 
compilation performance at


https://github.com/nordlow/phobos-next/blob/master/src/soa.d


What is the preferred way to implement to support foreach over 
`x` in


struct S { int i; float f; }
auto x = SOA!S();
foreach (S; x[])
{
}

?

Implement `opSlice` that returns a SOA.Range type?


1) not sure about opSlice cuz user can allocate every time when 
he need S[..] from SOA.

  easy call for user but its too expensive op.
  maybe better to define global array( T )( SOA!T {opt: int beg, 
int end}) that returns array.

x.array or array( x ) or x.array( 10, 20)
  looks like DRT that means "some range to newly allocated 
array". and SOA to S is some calculated range - need construct 
each element.


2) x.items returns SOA.Range


Re: .fflush() in stdio.d

2019-08-26 Thread a11e99z via Digitalmars-d-learn

On Monday, 26 August 2019 at 09:14:23 UTC, Jonathan M Davis wrote:

On Sunday, August 25, 2019 11:59:08 PM MDT berni via

- Jonathan M Davis



OFFTOPIC:

(dont have ur email. dont like emails cuz too officially and too 
long)
(and dont want create new topic. this one probably 
solved/finished already)


about benchmark 
https://dlang.org/library/std/datetime/stopwatch/benchmark.html

idk all reason why that not vice versa but imo better to change:

for now:
Duration[3] benchmark!(f1, f2, f3)( int runCount );

remarks:


benchmark!(
// next is simple func list
() => ps.each!( p => b += gcd( p[0], p[1])),
() => ps.each!( p => a += divGCD( p[0], p[1])),

)( 10 ) // and here real call with complicated number

.array // without it .map! is not compiling
.map!( x => x.total!"msecs")
.writeln;


1) .map! for static arrays doesn't compiling
  maybe better to return Range?

2) code with benchmark!() looks turn upside down when u try to 
use lambdas as args

I suggest add another versions of benchmark:
auto bench!( int N, FuncList...)( FuncList funcs );

benchmark!10( () => ps.each!( p => b += gcd( p[0], p[1])),
  () => ps.each!( p => a += divGCD( p[0], p[1])))...

auto bench!( FuncList...)( int N, FuncList funcs );

benchmark( 10,
() => ps.each!( p => b += gcd( p[0], p[1])),
() => ps.each!( p => a += divGCD( p[0], p[1])))...





Re: Sort Associative Array by Key

2019-08-25 Thread a11e99z via Digitalmars-d-learn

On Sunday, 25 August 2019 at 16:54:33 UTC, Samir wrote:
Is there a way to output the values of an associative array 
based on the lexicographic order of the keys?


For example, if foo = ["VXE":8, "BZP":5, "JLC":2], I'd like to 
output something like:


5
2
8




auto foo = ["VXE":8, "BZP":5, "JLC":2];
foo.byPair.array.sort!"a[0]




Re: [Help!] Use two different assembly symbol in D, but they are same address.

2019-08-25 Thread a11e99z via Digitalmars-d-learn

On Sunday, 25 August 2019 at 13:43:42 UTC, a11e99z wrote:

On Sunday, 25 August 2019 at 13:24:57 UTC, lili wrote:

On Saturday, 24 August 2019 at 12:55:57 UTC, a11e99z wrote:


and try to use any compiler DMD/LDC/GDC.
maybe result will be that u want.


Re: [Help!] Use two different assembly symbol in D, but they are same address.

2019-08-25 Thread a11e99z via Digitalmars-d-learn

On Sunday, 25 August 2019 at 13:24:57 UTC, lili wrote:

On Saturday, 24 August 2019 at 12:55:57 UTC, a11e99z wrote:

On Saturday, 24 August 2019 at 12:16:34 UTC, lili wrote:

On Saturday, 24 August 2019 at 12:09:19 UTC, a11e99z wrote:

On Saturday, 24 August 2019 at 11:53:01 UTC, lili wrote:

 [...]


resb 8
just reserving 8 bytes not initializing it.
probably u compare some garbage. sometimes it equals, 
sometimes not.

no?


I write wrong, not  if (_vga_x == _vga_y) but if (&_vga_x == 
&_vga_y)


try to do next:
add funtion in asm that returns real addresses to vga_x,y
extern(C) void asmVgas( int** px, int** py)
call it
int *px, *py;
asmVgas( , );
writefln( "%s=%s,%s=%s",px, &_vga_x,py, &_vga_y);
and see result


I followed your suggest, call asm_fn in d function. it return 
address not 0 but is a correct

address same as the var address show in link map file.
when a try define a __shared int xx, the  also 0.
after linked all variables address is 0 that in .bss segment.
do you know why occur this?

[global asm_fn]
asm_fn:
mov rax, p2_table
ret


no idea.

u can to define _vga_x,_vga_y in D code and export it to asm 
(vice versa than now).

see result again.

in case still not working:
make very simple app with global vars: 2 D-files OR 1 D-file and 
1 asm-file

(maybe its not working even for D+D files).
try to get same bug from compiler/linker.
fill the issue and attach both files as sample.
add point (for case D+asm) "how to compile asm file for linking 
with D" as u did.

then wait and hope.




Re: Merging two associative arrays

2019-08-24 Thread a11e99z via Digitalmars-d-learn

On Saturday, 24 August 2019 at 19:35:25 UTC, berni wrote:
I've got two associative arrays and want to get a new one, 
which is created out of both of them:


This works:

string[int] a = [1:"one", 7:"seven"];
string[int] b = [5:"five", 9:"nine"];

string[int] tmp = a.dup;
foreach (k,v;b) tmp[k] = v;

assert(tmp==[1:"one", 7:"seven", 5:"five", 9:"nine"]);

But is there something easier, especially without making that 
"tmp" explicit. I hoped for a~b, but that didn't work. (I 
allready know, that there aren't duplicated keys, if that 
matters.)


auto ab = a.byPair.chain( b.byPair).assocArray ?


Re: [Help!] Use two different assembly symbol in D, but they are same address.

2019-08-24 Thread a11e99z via Digitalmars-d-learn

On Saturday, 24 August 2019 at 12:16:34 UTC, lili wrote:

On Saturday, 24 August 2019 at 12:09:19 UTC, a11e99z wrote:

On Saturday, 24 August 2019 at 11:53:01 UTC, lili wrote:

 [...]


resb 8
just reserving 8 bytes not initializing it.
probably u compare some garbage. sometimes it equals, 
sometimes not.

no?


I write wrong, not  if (_vga_x == _vga_y) but if (&_vga_x == 
&_vga_y)


try to do next:
add funtion in asm that returns real addresses to vga_x,y
extern(C) void asmVgas( int** px, int** py)
call it
int *px, *py;
asmVgas( , );
writefln( "%s=%s,%s=%s",px, &_vga_x,py, &_vga_y);
and see result



Re: [Help!] Use two different assembly symbol in D, but they are same address.

2019-08-24 Thread a11e99z via Digitalmars-d-learn

On Saturday, 24 August 2019 at 11:53:01 UTC, lili wrote:

Hi:
  definition _vga_x and _vga_y symbol in asm, compile use nasm 
-f elf64 -o boot.o boot.asm

  [section .bss]
...

  [global _vga_x]
  _vga_x:
  resb 8
  [global _vga_y]
  _vga_y:
  resb 8


  and nm boot.o show below
...
   00107000 B _vga_x
   00107008 B _vga_y

 and In another D file use this two symbol

extern(C) {
 extern __gshared int _vga_x; //definition in boot.asm
 extern __gshared int _vga_y; //definition in boot.asm
}

 void tt()
 {
if (_vga_x == _vga_y)
  //where is true, why?
 }

 but when a run tt so strange things happend that the test is 
true.

 Is where has a coding mistake.
 src  https://github.com/lilijreey/OS-D


resb 8
just reserving 8 bytes not initializing it.
probably u compare some garbage. sometimes it equals, sometimes 
not.

no?



Re: D1: Trying to update Juno Library to 1.076

2019-08-23 Thread a11e99z via Digitalmars-d-learn

On Friday, 23 August 2019 at 17:50:52 UTC, jicman wrote:

On Friday, 23 August 2019 at 17:18:55 UTC, a11e99z wrote:

On Friday, 23 August 2019 at 17:03:24 UTC, jicman wrote:

On Friday, 23 August 2019 at 16:49:07 UTC, a11e99z wrote:

right now problem exists with linker/libs only, compiler see


another try:
zip ur dmd 1.076 folder (for easy restoring it when something 
go wrong)

copy lib files from 1.046\lib\*.lib to 1.076\lib\*.lib
try to compile program again with dmd 1.076


TA-DAH!  Weird stuff.  The 1.046 libraries worked.  Very weird 
stuff.  Now to try to figure out how that happened, since I 
took **all** 1.076 from the download site.  Which means, that 
it may be have outdated libraries.  That's for another day, 
though.  Muchas gracias, as we say in Spanish.  But, I'll 
translate for you, Thanks very much.


josé


oops!
better to restore 1.076 back
and copy only Windows libs (not all DRT and others)
one by one till compilation errors dissapear:
oleaut32.lib
ole32.lib
rpcrt4.lib
...


Re: D1: Trying to update Juno Library to 1.076

2019-08-23 Thread a11e99z via Digitalmars-d-learn

On Friday, 23 August 2019 at 17:03:24 UTC, jicman wrote:

On Friday, 23 August 2019 at 16:49:07 UTC, a11e99z wrote:
right now problem exists with linker/libs only, compiler see 
all used VarXXX


First of all, thanks for your patient support.

to the above program, and still fails with the same error.  I 
also went and downloaded the latest D1 linker, and that also 
results in the same failure.


another try:
zip ur dmd 1.076 folder (for easy restoring it when something go 
wrong)

copy lib files from 1.046\lib\*.lib to 1.076\lib\*.lib
try to compile program again with dmd 1.076



Re: D1: Trying to update Juno Library to 1.076

2019-08-23 Thread a11e99z via Digitalmars-d-learn

On Friday, 23 August 2019 at 16:09:16 UTC, jicman wrote:

On Friday, 23 August 2019 at 16:02:38 UTC, a11e99z wrote:

On Friday, 23 August 2019 at 16:00:00 UTC, a11e99z wrote:

On Friday, 23 August 2019 at 14:02:36 UTC, jicman wrote:

On Thursday, 22 August 2019 at 19:59:55 UTC, jicman wrote:


cuz I tried compile app

void main() { VARIANT a, b; VarCmp( , , 0, 0).writeln; }

with DMD for x86/m32 & x64/m64 and I also failed
but LDC can compile for x64
(x86 its failed too but probably cuz my ENV setupped for x64)


if somebody will try to compile that whole D-code for testing

import std, core.sys.windows.oaidl, core.sys.windows.oleauto;
void main() {
VARIANT a, b;
VarCmp( , , 0, 0 ).writeln;
}


That looks like D2 code. I am trying to compile D1 code.  I 
think the linker is not getting something right.


right now problem exists with linker/libs only, compiler see all 
used VarXXX
u can download LDC (if it exists) for D1 and try to compile 
program for D1


import std.stdio;
// i dont know right Windows modules for D1 so import what u have
void main() {
VARIANT a, b;
 	VarCmp( a, b, 0, 0 ); // D1 version cuz was VarCmp( ref 
VARIANT, ... )

}



Re: D1: Trying to update Juno Library to 1.076

2019-08-23 Thread a11e99z via Digitalmars-d-learn

On Friday, 23 August 2019 at 16:00:00 UTC, a11e99z wrote:

On Friday, 23 August 2019 at 14:02:36 UTC, jicman wrote:

On Thursday, 22 August 2019 at 19:59:55 UTC, jicman wrote:


cuz I tried compile app

void main() { VARIANT a, b; VarCmp( , , 0, 0).writeln; }

with DMD for x86/m32 & x64/m64 and I also failed
but LDC can compile for x64
(x86 its failed too but probably cuz my ENV setupped for x64)


if somebody will try to compile that whole D-code for testing

import std, core.sys.windows.oaidl, core.sys.windows.oleauto;
void main() {
VARIANT a, b;
VarCmp( , , 0, 0 ).writeln;
}



Re: D1: Trying to update Juno Library to 1.076

2019-08-23 Thread a11e99z via Digitalmars-d-learn

On Friday, 23 August 2019 at 14:02:36 UTC, jicman wrote:

On Thursday, 22 August 2019 at 19:59:55 UTC, jicman wrote:
I think I have figured out what is going on.  I will comeback, 
if I need more help, but I have to rewrite a few more 
functions.  But, thanks for pointing out the pragma.  That 
gave me an idea of what was going on.




can u try to compile with LDC?

cuz I tried compile app

void main() { VARIANT a, b; VarCmp( , , 0, 0).writeln; }

with DMD for x86/m32 & x64/m64 and I also failed
but LDC can compile for x64
(x86 its failed too but probably cuz my ENV setupped for x64)



Re: D1: Trying to update Juno Library to 1.076

2019-08-22 Thread a11e99z via Digitalmars-d-learn

On Thursday, 22 August 2019 at 16:59:03 UTC, jicman wrote:

On Thursday, 22 August 2019 at 16:36:45 UTC, a11e99z wrote:

On Thursday, 22 August 2019 at 16:34:52 UTC, a11e99z wrote:

On Thursday, 22 August 2019 at 16:34:06 UTC, a11e99z wrote:

On Thursday, 22 August 2019 at 16:07:00 UTC, jicman wrote:

On Thursday, 22 August 2019 at 15:58:56 UTC, a11e99z wrote:


case of string doesn't matter for Windows.

I mean for command lines (not in D code)
and again I mean: file names are case insensitive fro Windows 
:)


Thanks. ;-)

Any specific one?  I am trying -debug, and it is giving me the 
same thing.  If I try -w, just gives me too many warnings.


 Error 42: Symbol Undefined _VarDecNeg@8

These are the options for dmd 1.076:



  -v verbose



Re: D1: Trying to update Juno Library to 1.076

2019-08-22 Thread a11e99z via Digitalmars-d-learn

On Thursday, 22 August 2019 at 16:34:52 UTC, a11e99z wrote:

On Thursday, 22 August 2019 at 16:34:06 UTC, a11e99z wrote:

On Thursday, 22 August 2019 at 16:07:00 UTC, jicman wrote:

On Thursday, 22 August 2019 at 15:58:56 UTC, a11e99z wrote:


case of string doesn't matter for Windows.

I mean for command lines (not in D code)

and again I mean: file names are case insensitive fro Windows :)



Re: D1: Trying to update Juno Library to 1.076

2019-08-22 Thread a11e99z via Digitalmars-d-learn

On Thursday, 22 August 2019 at 16:34:06 UTC, a11e99z wrote:

On Thursday, 22 August 2019 at 16:07:00 UTC, jicman wrote:

On Thursday, 22 August 2019 at 15:58:56 UTC, a11e99z wrote:


case of string doesn't matter for Windows.

I mean for command lines (not in D code)


Re: D1: Trying to update Juno Library to 1.076

2019-08-22 Thread a11e99z via Digitalmars-d-learn

On Thursday, 22 August 2019 at 16:07:00 UTC, jicman wrote:

On Thursday, 22 August 2019 at 15:58:56 UTC, a11e99z wrote:

try to add
pragma( lib, "OleAut32.lib" )


Thanks for the support, a11e99z. :-)

I have,

pragma(lib, "ole32.lib");
pragma(lib, "oleaut32.lib");

on that file. But I did go change it back to your suggestion,

pragma(lib, "ole32.lib");
pragma(lib, "OleAut32.lib");

and still get same error:

Thoughts?  thanks.


case of string doesn't matter for Windows.
so if u had "oleaut32" not working then "OleAut32" also will not 
work.


try to turn on verbose compilation and see all commands that 
generated by dub/compiler





Re: D1: Trying to update Juno Library to 1.076

2019-08-22 Thread a11e99z via Digitalmars-d-learn

On Thursday, 22 August 2019 at 15:55:48 UTC, jicman wrote:

Greetings!

I have been working on Juno for a long time with D1 version 
1.046, and love it.  But now, I want to update it to 1.076, the 
latest and greatest D1. I have fixed, what I think, were all of 
the problems.  However, when I build the libraries with my 
program, I get this error:


OPTLINK (R) for Win32  Release 8.00.12
Copyright (C) Digital Mars 1989-2010  All rights reserved.
http://www.digitalmars.com/ctg/optlink.html
c:\D\import\juno\com\core.obj(core)
 Error 42: Symbol Undefined _VarCmp@16
c:\D\import\juno\com\core.obj(core)
 Error 42: Symbol Undefined _VarDecNeg@8

The D1 version is,

DMD32 D Compiler v1.076
Any thoughts of what to do next?  Thanks.


try to add
pragma( lib, "OleAut32.lib" )



Re: What is "dmd" Internal API, can I use it just like std Library Reference?

2019-08-20 Thread a11e99z via Digitalmars-d-learn

On Tuesday, 20 August 2019 at 12:52:31 UTC, BoQsc wrote:

Hello everyone, again,

I had an idea that I want some colors in the output of Command 
Line (For Windows) and the Terminal (For Linux)




yesterday was talks about terminal colors in IRC-channel:
u can use VT-codes for changing colors:
https://docs.microsoft.com/en-us/windows/console/console-virtual-terminal-sequences#text-formatting

probably for Win10 only. idk for which Linux/Terminals it working 
too



// Windows code
import  std,
core.sys.windows.windows;

void main() {
auto hc = GetStdHandle( STD_OUTPUT_HANDLE );
assert( hc != INVALID_HANDLE_VALUE);

uint mod;
auto ok = GetConsoleMode( hc, );
assert( ok);
	ok = SetConsoleMode( hc, mod | 
ENABLE_VIRTUAL_TERMINAL_PROCESSING );

assert( ok);

writeln( "\x1b[38;2;255;100;0mTRUECOLOR");
writeln( "\x1b[30;47mHello from Inversed" );
writeln( "\x1b[38;2;255;0;255mTRUECOLOR\x1b[0m" );
  // last "\x1b[0m" - make colors default
readln;
}




Re: Can't add a const ubyte to a dynamic array of ubyte?

2019-08-20 Thread a11e99z via Digitalmars-d-learn

On Tuesday, 20 August 2019 at 09:49:21 UTC, Daniel Kozak wrote:
On Tue, Aug 20, 2019 at 11:30 AM ads via Digitalmars-d-learn 
 wrote:




you do not allow a person to think about a problem (and it’s easy 
here).
you carried him through a puddle now, but when he dives into Sea 
D, you will not be there :)




Re: Can't add a const ubyte to a dynamic array of ubyte?

2019-08-20 Thread a11e99z via Digitalmars-d-learn

On Tuesday, 20 August 2019 at 09:27:36 UTC, ads wrote:

import std.stdio;

ubyte[] extend(in uint[] arr)
{
ubyte[] result;
foreach (n; arr)
{
if (n < 10)
result ~= n;
else
{
import std.conv : to;
foreach (digit; n.to!string)
result ~= digit.to!ubyte;
}
}
return result;
}

unittest
{
import std.algorithm : equal;
assert(extend([1, 25, 70, 0]).equal([1, 2, 5, 7, 0, 0]));
}

How can I get around this? I want to ensure that the array is 
not mutated in the function in the signature too.


what u using here?

result ~= digit.to!ubyte;

why not to do same in line?

result ~= n;


2) digit is '0'+(0..9) so u need subtract '0' ('0' is \x30)


Re: Why is this allowed? Inheritance variable shadowing

2019-08-13 Thread a11e99z via Digitalmars-d-learn

On Tuesday, 13 August 2019 at 06:39:24 UTC, a11e99z wrote:

On Tuesday, 13 August 2019 at 05:57:23 UTC, Mike Parker wrote:

On Tuesday, 13 August 2019 at 04:40:53 UTC, Chris Katko wrote:


OT:
and again how to easy to google info about error/warning just 
with one word "CS0108"


D can use attrs for such things.

OT:
1) need to add compiler attrs that speaks with compiler - they 
are change code generation, compiler passes or something. like 
pragmas do.
2) need to separate all attrs in a separate construction like C# 
do

[inline, nextOne, returns: someAttrToReturnValue]
int meth( [argAttrCanBeToo] int x ) { }

or

[hide]
public int x = 2;
cuz its visually separated and easy to skip it with eye when u 
reading/reviewing code.


it can be mess for now:

pure @trusted int meth( int x ) @nogc nothrow { return 5; }
NB all of this attrs is compiler attrs not user, they changes 
compilation.

- no possibility add attr to args or returns
- some attrs with "@" and some don't
- its hard to read when D adds 2-3 attrs more for next 5-10 years

my wishlist of new compilation attrs:
- [hiding] for subj
- [offset(N)] for explicit struct alignment without mess with 
unions/align(4) cuz sometimes I know exactly offset for field and 
I can point it with no side effects calcs adding pads, unions and 
etc
- [inline(bool)] instead of pragma( inline, true ) that looks 
like compiler attr but another way

- [deprecated(text)]
- [nodiscard] cannot discard return value
- etc


Re: Why is this allowed? Inheritance variable shadowing

2019-08-13 Thread a11e99z via Digitalmars-d-learn

On Tuesday, 13 August 2019 at 05:57:23 UTC, Mike Parker wrote:

On Tuesday, 13 August 2019 at 04:40:53 UTC, Chris Katko wrote:


I don't know if I'd call that shadowing. This is how it works 
in Java, too. There's no such thing as a vtable for member 
variables -- each class gets its own set and they don't 
conflict. The only time it could be really be called shadowing 
is when the base class member is protected, as then it's 
accessible in the subclass scope.


Also, it's not the same thing as overriding. Overriding means 
that when you call base.foo(), you get sub.foo()'s 
implementation. But when you access base.var, you get base.var 
and not sub.var.


I would find it extremely annoying if it worked the way you're 
expecting it to.


C# results:
main.cs(8,14): warning CS0108: `B.x' hides inherited member 
`A.x'. Use the new keyword if hiding was intended
main.cs(4,14): (Location of the symbol related to previous 
warning)

Compilation succeeded - 1 warning(s)
mono main.exe
1
2


with "new" keyword that is used to hide a method, property, 
indexer, or event of the base class into the derived class.

class B : A {
  public new int x = 2;
  // I tell "I want hiding. Ensure "x exists in parent"" 
explicitly

  // almost same meaning as "override"
}


OT:
and again how to easy to google info about error/warning just 
with one word "CS0108"


Re: Ethan: About your wpf/C# and D integration

2019-08-12 Thread a11e99z via Digitalmars-d-learn

On Monday, 12 August 2019 at 13:08:17 UTC, Bert wrote:
One of the biggest issues I have with D is properly gui 
development. It's just a real pain in the ass compared to wpf 
and C#.


maybe it is better to use WinRT instead of C#/WPF?
- can be used for desktop apps too
- same XAML
- WinRT based on COM-model so it can be simpler interop
  (not sure how to transfer POD types. maybe streaming?)
- no need pinning from CLR side
- definitions can be generated from WinMD metadata files



Re: What the abstrac final class mean?

2019-08-12 Thread a11e99z via Digitalmars-d-learn

On Monday, 12 August 2019 at 09:16:19 UTC, Alex wrote:

On Monday, 12 August 2019 at 08:54:56 UTC, lili wrote:

Hi:
Why need defined an abstract final class?
see  
https://github.com/Rikarin/Trinix/blob/master/Kernel/arch/amd64/gdt.d


From what I saw, all members are static. So, this is a kind of 
utility class, which is not supposed to be instantiated, nor to 
be derived from. Maybe, it serves like a namespace, for 
convenience...


its weird that next compiles in some weird form

import std;
static class A {
static a() { "a".writeln; } // forgot return type
}
void main() {
A.a();

A b, c; // 2 instances with diff addr
"%s %s".writefln( ,  );
}

// and for static struct DMD gives to A size 1b, LDC - 8b


Re: Module static constructor doesn't work?

2019-08-08 Thread a11e99z via Digitalmars-d-learn

On Thursday, 8 August 2019 at 14:55:37 UTC, Andrey Zherikov wrote:

I have the following code:

// main.d
int main()
{
import std.stdio;
writeln("hello");
return 0;
}

But if I create library from lib.d first and then link it with 
main.d then ctor/dtor are not called:

$ dmd.exe -lib lib1/lib.d -od=lib1
$ dmd.exe main.d lib1/lib.lib && main.exe
hello


try to add to main.d:

import lib1.lib;


Re: Help me decide D or C

2019-08-01 Thread a11e99z via Digitalmars-d-learn

On Thursday, 1 August 2019 at 15:17:11 UTC, a11e99z wrote:

On Wednesday, 31 July 2019 at 18:38:02 UTC, Alexandre wrote:

Hi everyone,

I would like an honest opinion.
I have a beginner level (able to do very small programs) in a 
few languages  such as python, go, C, guile(scheme) and common 
lisp. I want to pick a language and go deep with it and focus 
on only one for at least the next 2 years or so.




program bouncing ball on few languages and choose that more 
liked.

learning language with numbers and strings only is boring.

also you can program tasks from 
https://www.codingame.com/training/easy with dozen languages in 
web browser before install to local machine.
some of them contains graphics 
https://www.codingame.com/ide/puzzle/power-of-thor-episode-1 
when u run tests.
read data from stdin, print result to stdout, and use stderr 
for debugging with diagnostics messages.


imo better choice is (with criteria to find best job)
- Qt:
C++ with any library that u need in one style
- C#:
web, graphics, mobiles, command tools with nice language.
- Java/Kotlin:
same as C# but in top-3. C# is top-5 with more comfort 
language than Java. Kotlin same comfort as C#, but JVM (Virtual 
Machine of Java and Kotlin) still does not support value types, 
that is sucks.

- JavaScript/TypeScript:
web-browser language with node.js that allows to program 
server side too.

- You can try Python too.
another dynamic language (as JavaScript). I don't like langs 
that based on space/tabs so I can not say anything about it.


C is too low level language. and many resources is not best 
criteria for it.
(like people says "there's definitely something in the shit, a 
million flies can't be wrong").


D is stuck in some middle ages with subsistence economy, they 
still have stone tools but now they found iron/steel :)


Re: Help me decide D or C

2019-08-01 Thread a11e99z via Digitalmars-d-learn

On Wednesday, 31 July 2019 at 18:38:02 UTC, Alexandre wrote:

Hi everyone,

I would like an honest opinion.
I have a beginner level (able to do very small programs) in a 
few languages  such as python, go, C, guile(scheme) and common 
lisp. I want to pick a language and go deep with it and focus 
on only one for at least the next 2 years or so.




program bouncing ball on few languages and choose that more liked.
learning language with numbers and strings only is boring.

also you can program tasks from 
https://www.codingame.com/training/easy with dozen languages in 
web browser before install to local machine.
some of them contains graphics 
https://www.codingame.com/ide/puzzle/power-of-thor-episode-1 when 
u run tests.
read data from stdin, print result to stdout, and use stderr for 
debugging with diagnostics messages.


Re: Return the complete number

2019-07-24 Thread a11e99z via Digitalmars-d-learn

On Wednesday, 24 July 2019 at 16:16:15 UTC, Greatsam4sure wrote:

On Wednesday, 24 July 2019 at 15:57:06 UTC, a11e99z wrote:

On Wednesday, 24 July 2019 at 15:56:13 UTC, a11e99z wrote:

On Wednesday, 24 July 2019 at 15:45:08 UTC, Greatsam4sure


The result is always to six significant figure. I want the 
whole number to be display




see another answers at thread
https://forum.dlang.org/post/qh9v10$19v1$1...@digitalmars.com
https://forum.dlang.org/post/afzqnnorzwosimfqn...@forum.dlang.org


Re: Return the complete number

2019-07-24 Thread a11e99z via Digitalmars-d-learn

On Wednesday, 24 July 2019 at 15:45:08 UTC, Greatsam4sure wrote:

int main(){
 double mum = 0;
 Write("enter a number: ")
 readf(" %s\n",);
 Writeln(num);

}

How do I return the complete number the user enter since I 
don't since the user can enter numbers of various length with 
dmd approximating it.


I will appreciate any help


as drug said: writefln with formatting
in case no need prints just string representation use
  s/format https://dlang.org/phobos/std_format.html#format
auto str = num.format!"%.16s"; // using UFCS
or
auto str = "%.16s".format( num); // UFCS too for 2nd version of 
format

or
string str = format( "%.16s", num);

simple help can be asked on IRC channel too 
irc://irc.freenode.net/d

(HexChat, mIRC clients and others)


Re: Return the complete number

2019-07-24 Thread a11e99z via Digitalmars-d-learn

On Wednesday, 24 July 2019 at 15:56:13 UTC, a11e99z wrote:

On Wednesday, 24 July 2019 at 15:45:08 UTC, Greatsam4sure wrote:

int main(){
 double mum = 0;
 Write("enter a number: ")
 readf(" %s\n",);
 Writeln(num);

}

How do I return the complete number the user enter since I 
don't since the user can enter numbers of various length with 
dmd approximating it.


I will appreciate any help


  readf!" %s\n"( num );
or
  num.readf!" %s\n";
or
  num = readln.strip.to!double;


oops! i misunderstood


Re: Return the complete number

2019-07-24 Thread a11e99z via Digitalmars-d-learn

On Wednesday, 24 July 2019 at 15:45:08 UTC, Greatsam4sure wrote:

int main(){
 double mum = 0;
 Write("enter a number: ")
 readf(" %s\n",);
 Writeln(num);

}

How do I return the complete number the user enter since I 
don't since the user can enter numbers of various length with 
dmd approximating it.


I will appreciate any help


  readf!" %s\n"( num );
or
  num.readf!" %s\n";
or
  num = readln.strip.to!double;


Re: Memory allocation failed in CT

2019-07-13 Thread a11e99z via Digitalmars-d-learn

On Saturday, 13 July 2019 at 06:25:37 UTC, Andrey wrote:

On Tuesday, 9 July 2019 at 19:04:53 UTC, Max Haughton wrote:
Is this a 64 or 32 bit compiler? Also could you post the 
source code if possible?


You could try "--DRT-gcopt=profile:1" druntime flag to see if 
the compiler is running out of memory for real


Thanks for help. I solved my issue by rewritting code.


can u describe how u rewrote the code?
so it can be solution for all of us:
when u generate long string in CT for mixins and u get an 
exception u can do next ...


Re: SendMessageTimeoutW requires casting string to uint?

2019-07-09 Thread a11e99z via Digitalmars-d-learn

On Tuesday, 9 July 2019 at 12:14:38 UTC, BoQsc wrote:

On Tuesday, 9 July 2019 at 11:11:53 UTC, Dejan Lekic wrote:
auto result = SendMessageTimeoutW(
HWND_BROADCAST,
WM_SETTINGCHANGE,
0,
envi.toUTF16z,
SMTO_ABORTIFHUNG,
timeout,
null
);

C:\Users\User\Desktop>rdmd ref.d
ref.d(19): Error: function 
`core.sys.windows.winuser.SendMessageTimeoutW(void*, uint, 
uint, int, uint, uint, uint*)` is not callable using argument 
types `(void*, int, int, const(wchar)*, int, uint, 
typeof(null))`
ref.d(19):cannot pass argument 
`toUTF16z(cast(const(char)[])envi)` of type `const(wchar)*` to 
parameter `int`
Failed: ["C:\\D\\dmd2\\windows\\bin\\dmd.exe", "-v", "-o-", 
"ref.d", "-I."]


// add cast to LPARAM for SendMessageTimeoutW
  cast( LPARAM )envi.toUTF16z,

// import lib too somewhere out of main() or in command line
version(Windows) pragma(lib, "user32.lib");


Re: Why does `static foreach` lead to something calling `~=` internally?

2019-07-07 Thread a11e99z via Digitalmars-d-learn

On Sunday, 7 July 2019 at 17:07:59 UTC, a11e99z wrote:

On Sunday, 7 July 2019 at 16:51:57 UTC, 0xEAB wrote:
Why does this `static foreach` lead to hidden usage of 
operator `~=` calls in some cases?



probably same
oops! this one 
https://forum.dlang.org/post/eidpgqohllwmuumxw...@forum.dlang.org


Re: Why does `static foreach` lead to something calling `~=` internally?

2019-07-07 Thread a11e99z via Digitalmars-d-learn

On Sunday, 7 July 2019 at 16:51:57 UTC, 0xEAB wrote:
Why does this `static foreach` lead to hidden usage of operator 
`~=` calls in some cases?




probably same 
https://forum.dlang.org/post/qd9ee0$2eud$1...@digitalmars.com


Re: Is there something like a consuming take?

2019-07-06 Thread a11e99z via Digitalmars-d-learn

On Saturday, 6 July 2019 at 12:10:13 UTC, berni wrote:

On Saturday, 6 July 2019 at 11:48:51 UTC, a11e99z wrote:

Maybe I need to explain, what I dislike with this approach: 
take() calls popFront n times and drop() calls popFront another 
n times giving a total of 2n times (depending on the underlying 
range, this might cause lot's of calulcations be done twice. 
The first version with the foreach loop calls popFront only n 
times.


auto take_consuming( R )( ref R r, int cnt ) {
import std.range.primitives : hasSlicing;
static if (hasSlicing!R) { // without allocations
auto tmp = r[0..cnt];
r = r[cnt..$]; // or r.popFronN( cnt ); // O(1)
return tmp;
} else { // loop range once
auto tmp = uninitializedArray!( ElementType!R[])( cnt);
int k = 0;
for (; !r.empty && kr.front;

return tmp[ 0..k];
}
}



Re: For loop with separator

2019-07-06 Thread a11e99z via Digitalmars-d-learn

On Saturday, 6 July 2019 at 11:48:42 UTC, berni wrote:

On Thursday, 4 July 2019 at 17:00:33 UTC, Q. Schroll wrote:
The prime example is printing the comma when printing a list: 
There is one between any two elements, but neither is one at 
front or behind the last one.


If it is just for printing commas in between, you can use 
range.join(", ")


https://dlang.org/phobos/std_array.html#.join


.map!(e=>e.text).join( ", "); // map for non strings
or
.format!"%(%s, %)"; // for anything


Re: Is there something like a consuming take?

2019-07-06 Thread a11e99z via Digitalmars-d-learn

On Saturday, 6 July 2019 at 11:20:50 UTC, berni wrote:
I want to copy the first n items of a range to an array, I came 
up with this now:

data = r.take(n).array;
This works partly, because the values of r are not consumed. So 
I have to call afterwards:

r = r.drop(n);
Now I wonder, if it is possible to do this with one single 
call, something like

data = r.take_consuming(n).array;
Does there something like this exist?


sure
auto take_consuming( R )( ref R r, int cnt ) {
auto tmp = r.take( cnt ).array;
r = r.drop( cnt );
return tmp;
}
don't thank


Re: Why are immutable array literals heap allocated?

2019-07-04 Thread a11e99z via Digitalmars-d-learn

On Thursday, 4 July 2019 at 10:56:50 UTC, Nick Treleaven wrote:

immutable(int[]) f() @nogc {
return [1,2];
}

onlineapp.d(2): Error: array literal in `@nogc` function 
`onlineapp.f` may cause a GC allocation




specify the size of the static array:
immutable(int[ 2 /*HERE*/ ]) f() @nogc { return [1,2]; }


Re: assert in unittest has access to private member?

2019-06-30 Thread a11e99z via Digitalmars-d-learn

On Sunday, 30 June 2019 at 17:24:03 UTC, Robert M. Münch wrote:
I have a case, with templates, where an assert in a unittest 
can access a private memember and I don't know how this can 
happen.


Before trying to creat an equivalent case, I want to 
cross-check, if assert has special semantics in a unittest so 
that it can access private memembers?


Private means that only members of the enclosing class can access 
the member, or

vvv
members and functions in the same module as the enclosing class.
^^^
did you take it into account?


Re: Finding the maxElement of Two-Dimensional Array

2019-06-30 Thread a11e99z via Digitalmars-d-learn

On Sunday, 30 June 2019 at 15:22:42 UTC, Samir wrote:

How come this works:
int[4][2] ta = [[2, 1, 4, 3], [3, 10, 2, 5]];
writeln(ta[1].maxElement); // get error on this line



try to take slice from static arrays
writeln(ta[1][].maxElement);
or use dynamic arrays (slices)
int[][] ta = [[2, 1, 4, 3], [3, 10, 2, 5]]; // or auto ta



Re: Reading formatted file

2019-06-27 Thread a11e99z via Digitalmars-d-learn

On Thursday, 27 June 2019 at 13:52:43 UTC, a11e99z wrote:

On Thursday, 27 June 2019 at 13:31:23 UTC, Tabamon wrote:
1) try to google "dlang read text file", most probably 1,2,3 
link will help to u.

2) https://dlang.org/library/std/file/read_text.html
string content = readText( fileName );


3) for matrix reading better to use byLine()
https://dlang.org/library/std/stdio/file.by_line.html (see the 
samples below)


Re: Reading formatted file

2019-06-27 Thread a11e99z via Digitalmars-d-learn

On Thursday, 27 June 2019 at 13:31:23 UTC, Tabamon wrote:
I am new at D, I'm making a sudoku solver in D, I wanted to add 
the option to read sudoku from a .txt file.


1) try to google "dlang read text file", most probably 1,2,3 link 
will help to u.

2) https://dlang.org/library/std/file/read_text.html
string content = readText( fileName );