On Friday, 15 January 2021 at 07:35:00 UTC, H. S. Teoh wrote:
(1) Refactored one function called from an inner loop to reuse
a buffer instead of allocating a new one each time, thus
eliminating a large amount of garbage from small allocations;
<...>
The result was about 40-50% reduction in
On Wednesday, 13 January 2021 at 18:58:56 UTC, Marcone wrote:
I've always heard programmers complain about Garbage Collector
GC. But I never understood why they complain. What's bad about
GC?
Most people get to know GC trough Java or C#. Those languages
promote the use of OOP and they say
On Friday, 15 January 2021 at 15:18:31 UTC, IGotD- wrote:
I have a feeling that bump the pointer is not the complete
algorithm that D uses because of that was the only one, D would
waste a lot of memory.
Freeing memory is for loosers :D
https://issues.dlang.org/show_bug.cgi?id=21248
DMD
On Friday, 15 January 2021 at 14:35:55 UTC, Ola Fosheim Grøstad
wrote:
On Friday, 15 January 2021 at 14:24:40 UTC, welkam wrote:
You can use GC with D compiler by passing -lowmem flag. I
didnt measure but I heard it can increase compilation time by
3x.
Thanks for the info. 3x is a lot
Take
On Thursday, 14 January 2021 at 18:51:16 UTC, Ola Fosheim Grøstad
wrote:
One can follow the same kind of reasoning for D. It makes no
sense for people who want to stay high level and do batch
programming. Which is why this disconnect exists in the
community... I think.
The reasoning of why
On Friday, 15 January 2021 at 11:28:55 UTC, Ola Fosheim Grøstad
wrote:
On Friday, 15 January 2021 at 11:11:14 UTC, Mike Parker wrote:
That's the whole point of being able to mix and match. Anyone
avoiding the GC completely is missing it (unless they really,
really, must be GC-less).
Has DMD
Oh an also https://github.com/dlang/dmd/pull/9899
On Wednesday, 17 June 2020 at 14:32:09 UTC, Adam D. Ruppe wrote:
On Wednesday, 17 June 2020 at 14:24:01 UTC, Stefan Koch wrote:
Parser in dmd does even inherit from Lexer.
why would a parser ever inherit from a lexer?
So you can write nextToken() instead of lexer.nextToken()
I tried to compile a 32 bit executable but my system does not
have 32 bit phobos. How do I get 32 bit phobos? I am using
Manjaro.
dmd -m32 source/test2.d
/usr/bin/ld: skipping incompatible
/usr/lib/gcc/x86_64-pc-linux-gnu/10.1.0/../../../libphobos2.a
when searching for -lphobos2
/usr/bin/ld:
On Tuesday, 2 June 2020 at 06:00:10 UTC, Виталий Фадеев wrote:
On Monday, 1 June 2020 at 18:55:03 UTC, Paul Backus wrote:
On Monday, 1 June 2020 at 16:18:44 UTC, Виталий Фадеев wrote:
I do it!
https://github.com/vitalfadeev/SublimeDlangAutoImport
Cool. I dont use classe but I see how this
On Wednesday, 27 May 2020 at 16:53:37 UTC, jmh530 wrote:
Not always true...many languages support column-major order
(Fortran, most obviously).
if your column major matrix is implemented as
matrix[row_index][column_index]
then ok no puppies will be hurt. But I dont see much value in
such
On Wednesday, 27 May 2020 at 01:31:23 UTC, data pulverizer wrote:
column major
Cute puppies die when people access their arrays in column major.
On Sunday, 24 May 2020 at 17:05:16 UTC, Vinod K Chandran wrote:
cast(DWORD_PTR) this);
Where is DWORD_PTR defined? I cant find it in docs. If its an
alias of long then you have to cast to a pointer like this
cast(long*) this;
you need to specify that you want to cast to a pointer of type T.
There is automem to help with manual memory management
https://code.dlang.org/packages/automem
On Wednesday, 20 May 2020 at 20:49:52 UTC, Vinod K Chandran wrote:
Hi all,
I have some questions about this forum.
1. How to edit a post ?
2. How to edit a reply ?
3. How to add some code(mostly D code) in posts & replies.
4. How to add an image in posts & replies.
5. Is there a feature to mark
On Wednesday, 20 May 2020 at 18:53:01 UTC, NonNull wrote:
Which D compiler should be used to be ABI compatible with
mingw32? And which to be ABI compatible with mingw64?
I am not expert here but doesnt all C compilers have the same
ABI? If yes then compile your code in 32 bits for 32 bit C obj
On Wednesday, 20 May 2020 at 17:29:47 UTC, Vinod K Chandran wrote:
I am very sad that i delayed to start learning D only because
of semicolons and curly braces.
Walter(creator of this language) said that redundant grammar is a
good thing because it allows compiler to emit better error
On Wednesday, 20 May 2020 at 09:45:48 UTC, Vinod K Chandran wrote:
// Now, we need to use like this
auto form= new Window();
form.event.click = bla_bla;
// I really want to use like this
auto form= new Window();
form.click = bla_bla;
```
Then you want alias this.
class Window : Control{
On Tuesday, 5 May 2020 at 20:29:13 UTC, Steven Schveighoffer
wrote:
the optimizer recognizes what you are doing and changes your
code to:
writeln(1_000_000_001);
Oh yes a classic constant folding. The other thing to worry about
is dead code elimination. Walter has a nice story where he sent
On Saturday, 2 May 2020 at 21:05:32 UTC, Baby Beaker wrote:
I need open a Binary EXE, it can be using "rb" mode and convert
it to Hexadecimal for me make some changes and save as "rb"
again. How can I make it? Thank you.
You dont convert binary data to hexadecimal. You display it as
If I remember correctly VS studio has different release and debug
configurations for both compiler and linker. If release works but
debug doesnt make sure that when you add things to one to also
add to another
On Monday, 4 November 2019 at 19:53:29 UTC, bioinfornatics wrote:
3/ variable flagged as `shared` does at mean the variable is
put into L2 cache ?
First caching is controlled by CPU not programmer.
Second not all architectures share L2 between cores.
4 jaguar cores share L2 cache in consoles
On Thursday, 24 October 2019 at 21:02:03 UTC, Per Nordlöw wrote:
On Thursday, 24 October 2019 at 18:37:05 UTC, welkam wrote:
I remember in some video Chandler Carruth said that value
range propagation across function boundary was implemented in
llvm but later removed because it produced no
On Wednesday, 23 October 2019 at 11:20:59 UTC, Per Nordlöw wrote:
Does DMD/LDC avoid range-checking in slice-expressions such as
the one in my array-overload of `startsWith` defined as
bool startsWith(T)(scope const(T)[] haystack,
scope const(T)[] needle)
{
if
On Thursday, 24 October 2019 at 16:49:09 UTC, Mil58 wrote:
On Thursday, 24 October 2019 at 16:21:47 UTC, welkam wrote:
On Thursday, 24 October 2019 at 15:27:05 UTC, Mil58 wrote:
[...]
void main() {
File("data.txt", "r+")
.byLineCopy()
.array()
.each!writeln;
}
On Wednesday, 23 October 2019 at 15:24:13 UTC, drug wrote:
I'd like to add (and modify) section to ELF executable to
implement DTrace probes. DTrace does it in probe assembly:
```
__asm__ __volatile__ (
"990: nop
.pushsection .note.stapsdt,\"?\",\"note\"
.balign 4
On Thursday, 24 October 2019 at 01:17:24 UTC, OiseuKodeur wrote:
BTW if you prefer using optlink and the digitalmars C
runtime, you can instruct dub to do so with: --arch=x86
how can i add --arch=x86 flag to the dub.json so it do it
automatically ?
"dflags": [
"--arch=x86"
]
On Thursday, 24 October 2019 at 14:08:36 UTC, 9898287 wrote:
Does this contain any undefined behavior? It is in C as far as
I knew.
immutable int number = 1;
auto bad_idea = (cast(ubyte*) )[0 .. number.sizeof];
bad_idea[0] = 2;
writeln(number); //1
writeln(*(cast(int*)bad_idea.ptr)); //2
Cast
On Thursday, 24 October 2019 at 15:27:05 UTC, Mil58 wrote:
Hi all It's me again ;-)
(because you're very strong in Dlang, here...)
In want a result as i write in a comment, with remove unwanted
'\r' >>
import std.stdio;
import std.file;
import std.conv;
import std.process : executeShell;
/*
On Friday, 30 November 2018 at 04:47:26 UTC, Andrew Pennebaker
wrote:
gcc is currently required for dmd on FreeBSD, as dmd links to
libstdc++.
Parts of dmd are still written in C++ but most of it was
converted recently. More on that here:
"DMD backend now in D"
On Sunday, 25 November 2018 at 22:00:21 UTC, Chris Katko wrote:.
So 1) I have to compile manually, then link. Except that also
runs the files every time even if they're up-to-date. Is that
normal behavior for C/C++?
Well you dont have to use separate commands but yes compiling and
linking
On Friday, 23 November 2018 at 08:57:57 UTC, Chris Katko wrote:
D is supposed to compile fast.
You didnt read the fine print. It compiles simple code fast. Also
compilation is separate step from linking and your program might
spend half of "compilation" time in link phase.
On Wednesday, 21 November 2018 at 09:20:01 UTC, NoMoreBugs wrote:
On Tuesday, 20 November 2018 at 15:46:35 UTC, Adam D. Ruppe
wrote:
On Tuesday, 20 November 2018 at 13:27:28 UTC, welkam wrote:
Because the more you learn about D the less you want to use
classes.
classes rock. You just
On Monday, 19 November 2018 at 21:23:31 UTC, Jordi Gutiérrez
Hermoso wrote:
Why does nobody seem to think that `null` is a serious problem
in D?
Because the more you learn about D the less you want to use
classes. I view class as compatibility feature when you want to
port Java code to D.
On Tuesday, 20 November 2018 at 12:01:49 UTC, Stanislav Blinov
wrote:
On Tuesday, 20 November 2018 at 11:54:59 UTC, welkam wrote:
On Monday, 19 November 2018 at 22:14:25 UTC, Neia Neutuladh
wrote:
Nothing stops you from writing:
SomeStruct myStruct;
On Monday, 19 November 2018 at 22:14:25 UTC, Neia Neutuladh wrote:
Nothing stops you from writing:
SomeStruct myStruct;
fd.rawRead((cast(ubyte*))[0..SomeStruct.sizeof]);
Standard caveats about byte order and alignment.
Never would I thought about casting struct to static array. If I
So my question is in subject/title. I want to parse binary file
into D structs and cant really find any good way of doing it.
What I try to do now is something like this
byte[4] fake_integer;
auto fd = File("binary.data", "r");
fd.rawRead(fake_integer);
int real_integer = *(cast(int*)
DIP 1000 says:
Delegates currently defensively allocate closures with the GC.
Few actually escape, and with scope only those that actually
escape need to have the closures allocated.
https://github.com/dlang/DIPs/blob/master/DIPs/DIP1000.md#benefits
On Wednesday, 3 October 2018 at 21:50:49 UTC, Stanislav Blinov
wrote:
Thread-local storage is memory allocated for each thread.
Only static non-immutable variables go there. Regular variables
on the stack aren't explicitly placed in any TLS, they're,
well, on the stack as it is.
Oh so its
string a = "test";
is a variable that mutates so it should be thread local. Also ASM
output shows that these variables are not optimized away so
compiler should output something but it doesnt. Or I dont
understand thread local storage.
On Wednesday, 3 October 2018 at 20:58:01 UTC, Stanislav Blinov
wrote:
No, all *static non-immutable* variables are thread-local by
default, not just "all variables".
I misspoke but this should write something
https://run.dlang.io/is/3u1wFp
If you look at asm output there are "call
I was playing around with dmd`s make file trying to see if I can
compile dmd with different compilers and different compilation
flags. By playing around I found that some dmd files are compiled
with -vtls flag unconditionally and that ldc do not support this
flag. First I dont know what -vtls
Tried to use DMD compiler that I built from source by following
these instructions https://wiki.dlang.org/Building_under_Windows
They are outdated but I managed to compile it but I get this
error when I tried to compile some code.
dmdm -run Main.d
On Monday, 29 January 2018 at 22:55:12 UTC, I Lindström wrote:
The other way I've been thinking is to do the thing
browser-based, but for some reason that doesn't feel right.
Well it didnt felt wrong for Microsoft to use modified internet
explorer to make calculator. You can read more on
On Sunday, 28 January 2018 at 20:42:52 UTC, Jonathan M Davis
wrote:
There is nothing incorrect about the error message. The
compiler looked at all of the functions in the overload set,
and it found none that matched. The reason that it found none
that matched was because it couldn't find any
Error says that it cant deduce function from argument types but
in reality it fails to meet function template constraints. In
this case !is(CommonType!(staticMap!(ElementType,
staticMap!(Unqual, Ranges))) == void)
In human terms it means that arguments are not the same type. Is
this require
On Sunday, 28 January 2018 at 14:33:04 UTC, Johan Engelen wrote:
Careful with these comparisons guys. Know what you are looking
at.
Wise words
On Monday, 12 October 2015 at 19:16:10 UTC, Gary Willoughby wrote:
If I was writing a screensaver in D what libraries are
available for opening a window and drawing sprites, etc on it.
GPU accelerated if possible.
I'm using Ubuntu 14.04 and latest DMD compiler.
You will need to interface to
Now its clearer to me. You want delegates
http://wiki.dlang.org/Function_literals
There was a talk on ranges in Dconf 2015
https://www.youtube.com/watch?v=A8Btr8TPJ8clist=PLEDeq48KhndP-mlE-0Bfb_qPIMA4RrrKoindex=10
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