Re: extern(C) enum
On Monday, 18 September 2017 at 02:04:49 UTC, bitwise wrote: On Monday, 18 September 2017 at 00:12:49 UTC, Mike Parker wrote: On Sunday, 17 September 2017 at 19:16:06 UTC, bitwise wrote: [...] I've been maintaining bindings to multiple C libraries (including Freetype 2 bindings) for 13 years now. I have never encountered an issue with an enum size mismatch. That's not to say I never will. For which platforms? I would have to actually go through the specs for each compiler of each platform to make sure before I felt comfortable accepting that int-sized enums were defacto standard. I would be worried about iOS, for example. The following code will run fine on Windows, but crash on iOS due to the misaligned access: char data[8]; int i = 0x; int* p = (int*)&data[1]; *p++ = i; *p++ = i; *p++ = i; I remember this issue presenting due to a poorly written serializer I used once (no idea who wrote it ;) and it makes me wonder what kind of other subtle differences there may be. I think there may be a few (clang and gcc?) different choices of compiler for Android NDK as well. I know for certain that Derelict packages have been used on Windows, Linux, OS X, FreeBSD, and Android. I'm unsure about iOS. But I'm fairly confident that enums are int there just like they are everywhere else.
Re: extern(C) enum
On Monday, 18 September 2017 at 00:12:49 UTC, Mike Parker wrote: On Sunday, 17 September 2017 at 19:16:06 UTC, bitwise wrote: [...] I've been maintaining bindings to multiple C libraries (including Freetype 2 bindings) for 13 years now. I have never encountered an issue with an enum size mismatch. That's not to say I never will. For which platforms? I would have to actually go through the specs for each compiler of each platform to make sure before I felt comfortable accepting that int-sized enums were defacto standard. I would be worried about iOS, for example. The following code will run fine on Windows, but crash on iOS due to the misaligned access: char data[8]; int i = 0x; int* p = (int*)&data[1]; *p++ = i; *p++ = i; *p++ = i; I remember this issue presenting due to a poorly written serializer I used once (no idea who wrote it ;) and it makes me wonder what kind of other subtle differences there may be. I think there may be a few (clang and gcc?) different choices of compiler for Android NDK as well.
Re: Propagating constness through function results
On 9/17/17 5:37 PM, David Zhang wrote: Nevermind! I rediscovered the `inout`attribute. Correct, inout applied to the function is actually applying to the 'this' parameter. Same as const or immutable functions as well. Though if I may say so, I have no idea how `inout` is supposed to indicate "whatever the constness of a". What inout does is look at the mutability of the parameter and transfer it to the mutability of the return type. -Steve
Re: Looking for instructions on how to make a Derelict library
On Monday, 18 September 2017 at 00:21:23 UTC, Mike Parker wrote: See the D wiki for links to articles that show how to translate C headers. I've been reading the DerelictSDL2 source code. I think I have a handle on it. I'll have to look more at the wiki too. Thanks.
Re: Looking for instructions on how to make a Derelict library
On Sunday, 17 September 2017 at 21:15:08 UTC, Matt Jones wrote: Hey everyone, I wanted to make a version of SQlite3 that uses Derelict to load the sqlite3 DLL when I'm ready. I can't find any instructions for how to make a basic Derelict style library. I looked around at http://derelictorg.github.io/, but could not find anything. Does anyone have any? Thanks. Just look at the existing Derelict packages. For a normal C library like sqlite3, it's pretty straightforward -- declare function pointers to ever public function in the API, translate all the types, convert any macros to D functions, and create a loader that extends derelict.util.SharedLibLoader and overrides loadSymbols. Examples: DerelictLua, DerelictODE, DerelictFT. You can also add support for static bindings by versioning out the function declarations and the loader in favor or normal function declarations. Examples: DerelictSDL2, DerelictGLFW3, DerelictAL. See the D wiki for links to articles that show how to translate C headers.
Re: extern(C) enum
On Sunday, 17 September 2017 at 19:16:06 UTC, bitwise wrote: On Sunday, 17 September 2017 at 18:44:47 UTC, nkm1 wrote: On Sunday, 17 September 2017 at 17:06:10 UTC, bitwise wrote: [...] Just put the burden on the users then. It's implementation defined, so they are in position to figure it out... This isn't something that can really be done with bindings, which are important for D to start really picking up speed. If someone goes to code.dlang.org and decides to download some FreeType2 bindings, they should just work. The memory corruption bugs that could occur due to binary incompatibility with some random copy of the original C library would be extremely hard to diagnose. They would also undermine the memory safety that a lot of people depend on when using D. I've been maintaining bindings to multiple C libraries (including Freetype 2 bindings) for 13 years now. I have never encountered an issue with an enum size mismatch. That's not to say I never will. I would say it's something you just don't have worry about. If, at some future time, any C compiler on any platform decides to start treating enums as something other than int or uint by default, then we can report a bug for D and fix it.
Re: Is there further documentation of core.atomic.MemoryOrder?
On Wednesday, 13 September 2017 at 14:40:55 UTC, Nathan S. wrote:
Is there a formal description of "hoist-load", "hoist-store",
"sink-load", and "sink-store" as used in
core.atomic.MemoryOrder
(https://dlang.org/library/core/atomic/memory_order.html)?
You can read this:
https://llvm.org/docs/Atomics.html#atomic-orderings
And use this:
```
static if (ms == MemoryOrder.acq) {
enum _ordering = AtomicOrdering.Acquire;
} else static if (ms == MemoryOrder.rel) {
enum _ordering = AtomicOrdering.Release;
} else static if (ms == MemoryOrder.seq) {
enum _ordering =
AtomicOrdering.SequentiallyConsistent;
} else static if (ms == MemoryOrder.raw) {
enum _ordering = AtomicOrdering.Monotonic;
}
```
-Johan
Re: Propagating constness through function results
Nevermind! I rediscovered the `inout`attribute. Though if I may say so, I have no idea how `inout` is supposed to indicate "whatever the constness of a".
Re: Propagating constness through function results
On Sunday, 17 September 2017 at 21:18:08 UTC, David Zhang wrote: Hi, I have a class `Image`, and I have a function called `getSubImage(Rect bounds)`. What I can't figure out is how to get the result of `getSubImage()` to take on the constness of the backing image. ie. //The Image class is really just a view over a buffer that's managed elsewhere const(Image).getSubImage(...) -> const(Image) Image.getSubImage(...) -> Image I tried to do this with `inout`, but that requires that a parameter in the function be `inout`. I don't suppose I could somehow declare `this` to be inout? Thanks I am aware that you can duplicate the method, but it seems a bit unwieldy and excessive.
Re: Access Violation when passing the result of a C function directly to a D function?
On Friday, 15 September 2017 at 04:01:13 UTC, Timothy Foster wrote: I've been calling it like so: ErrorFMOD(FMOD_System_Create(&system), "Error Creating System: "); Making the calls without my helper function doesn't cause an Access Violation. Calling it like this is the only thing that seems to fix it: auto result = FMOD_System_Create(&system); ErrorFMOD(result, "Error Creating System: "); Is this a known issue, or am I required to save the result of a C function to variable before passing it into another function or? This is very strange and you are certainly not required to save the result in a temp variable first. Do you have a small but full testcase that we can look at? (did you try with another compiler, LDC or GDC?) (note that debug information may be off, so the crash may happen in a different location from where it is reported to happen) -Johan
Propagating constness through function results
Hi, I have a class `Image`, and I have a function called `getSubImage(Rect bounds)`. What I can't figure out is how to get the result of `getSubImage()` to take on the constness of the backing image. ie. //The Image class is really just a view over a buffer that's managed elsewhere const(Image).getSubImage(...) -> const(Image) Image.getSubImage(...) -> Image I tried to do this with `inout`, but that requires that a parameter in the function be `inout`. I don't suppose I could somehow declare `this` to be inout? Thanks
Looking for instructions on how to make a Derelict library
Hey everyone, I wanted to make a version of SQlite3 that uses Derelict to load the sqlite3 DLL when I'm ready. I can't find any instructions for how to make a basic Derelict style library. I looked around at http://derelictorg.github.io/, but could not find anything. Does anyone have any? Thanks.
Re: What is the canonical way to subclass Thread and make it pauseable?
On Sunday, 17 September 2017 at 19:57:05 UTC, Enjoys Math wrote:
How do you write a pauseable Thread?
Thanks.
This seems to work:
module data_rates_thread;
import core.thread;
import std.datetime;
class DataRatesThread : Thread
{
private:
uint loopSleep;
bool paused;
public:
this(uint loopSleep) {
super(& run);
this.loopSleep = loopSleep;
paused = true;
}
void pause() {
paused = true;
}
void start() {
paused = false;
super.start();
}
private:
void run() {
import std.stdio;
int k = 0;
while (! paused) {
writeln(k);
k ++;
if (loopSleep != 0)
sleep(dur!"msecs"(loopSleep));
}
}
}
Which is not the best way to pause and resume, but it works for
my application.
What is the canonical way to subclass Thread and make it pauseable?
How do you write a pauseable Thread? Thanks.
Re: extern(C) enum
On Sunday, 17 September 2017 at 18:44:47 UTC, nkm1 wrote:
On Sunday, 17 September 2017 at 17:06:10 UTC, bitwise wrote:
[...]
Just put the burden on the users then. It's implementation
defined, so they are in position to figure it out...
This isn't something that can really be done with bindings, which
are important for D to start really picking up speed.
If someone goes to code.dlang.org and decides to download some
FreeType2 bindings, they should just work. The memory corruption
bugs that could occur due to binary incompatibility with some
random copy of the original C library would be extremely hard to
diagnose. They would also undermine the memory safety that a lot
of people depend on when using D.
for example, gcc: "Normally, the type is unsigned int if there
are no negative values in the enumeration, otherwise int. If
-fshort-enums is specified, then if there are negative values
it is the first of signed char, short and int that can
represent all the values, otherwise it is the first of unsigned
char, unsigned short and unsigned int that can represent all
the values. On some targets, -fshort-enums is the default; this
is determined by the ABI."
https://gcc.gnu.org/onlinedocs/gcc-6.4.0/gcc/Structures-unions-enumerations-and-bit-fields-implementation.html#Structures-unions-enumerations-and-bit-fields-implementation
msvc++: "A variable declared as enum is an int."
https://docs.microsoft.com/en-us/cpp/c-language/enum-type
I was starting to think along these lines as well. With respect
to the above, I'm wondering if something like this could be done:
`
template NativeEnumBase(long minValue, long maxValue)
{
static if(platform A)
{
static if(minValue < 0) // need signed?
{
static if(maxValue > int.max) // need long?
alias NativeEnumBase = long;
else
alias NativeEnumBase = int;
}
else
{
static if(maxValue > uint.max) // need long?
alias NativeEnumBase = ulong;
else
alias NativeEnumBase = uint;
}
}
else static if(platform B)
{
// etc...
alias NativeEnumBase = long;
}
else {
static assert("unsupported compiler");
}
}
enum Some_C_Enum_ : NativeEnumBase!(-1, 2)
{
SCE_INVALID = -1,
SCE_ZERO = 0,
SCE_ONE = 1,
SCE_TWO = 2,
}
`
So the question is, is there a way from inside D code to
determine what the native enum size would be for a given set of
min and max enum values? While C and C++ do not specify enum
size, are there platform or compiler level specifications we
could rely on?
It's probably pretty safe to assume it's an int; people who
play tricks with "-fshort-enums" deserve what's coming to them
:)
Agreed ;)
OpIndex/OpIndexAssign strange order of execution
struct Test{
@property int value(){
writeln("property value : ", _value);
return _value;
}
int _value;
Test opIndex( string index )
{
writeln( "opIndex : index : ", index );
return this;
}
Test opIndexAssign(int value, string index )
{
writeln( "opIndexAssign : value : ", value, " , index :
", index );
this._value = value;
return this;
}
}
Test t;
t["a"] = 100;
t["b"]["c"] = t["a"].value;
//OUTPUT:
opIndexAssign : index : a , value : 100
opIndex : index : b
opIndex : index : a
property value : 100
opIndexAssign : index : c , value : 100
//EXPECTED OUTPUT
opIndexAssign : index : a , value : 100
opIndex : index : a
property value : 100
opIndex : index : b
opIndexAssign : index : c , value : 100
Is this right?
I find unexpected this mix of operations on left and right side
of an equal operator.
Re: How to Skip some field/word in formattRead?
On Sunday, 17 September 2017 at 13:53:26 UTC, Ky-Anh Huynh wrote:
Is it possible to read just the second word from an input
string and skip all others?
"one two three".formattedRead!("%s %s", _, saveme)
---
import std.range;
auto saveme = "one two three".split.array [2];
---
Re: extern(C) enum
On Sunday, 17 September 2017 at 17:06:10 UTC, bitwise wrote: I don't really see a way to deal with this aside from branching the entire library and inserting something like 'FT_SIZE_REQUEST_TYPE__FORCE_INT = 0x' into every enum incase the devs used it in a struct. Just put the burden on the users then. It's implementation defined, so they are in position to figure it out... for example, gcc: "Normally, the type is unsigned int if there are no negative values in the enumeration, otherwise int. If -fshort-enums is specified, then if there are negative values it is the first of signed char, short and int that can represent all the values, otherwise it is the first of unsigned char, unsigned short and unsigned int that can represent all the values. On some targets, -fshort-enums is the default; this is determined by the ABI." https://gcc.gnu.org/onlinedocs/gcc-6.4.0/gcc/Structures-unions-enumerations-and-bit-fields-implementation.html#Structures-unions-enumerations-and-bit-fields-implementation msvc++: "A variable declared as enum is an int." https://docs.microsoft.com/en-us/cpp/c-language/enum-type It's probably pretty safe to assume it's an int; people who play tricks with "-fshort-enums" deserve what's coming to them :)
Re: extern(C) enum
On Saturday, 16 September 2017 at 12:34:58 UTC, nkm1 wrote:
On Saturday, 16 September 2017 at 03:06:24 UTC, Timothy Foster
wrote:
[...]
[...]
So it appears I'm screwed then.
Example:
typedef enum FT_Size_Request_Type_
{
FT_SIZE_REQUEST_TYPE_NOMINAL,
FT_SIZE_REQUEST_TYPE_REAL_DIM,
FT_SIZE_REQUEST_TYPE_BBOX,
FT_SIZE_REQUEST_TYPE_CELL,
FT_SIZE_REQUEST_TYPE_SCALES,
FT_SIZE_REQUEST_TYPE_MAX
} FT_Size_Request_Type;
typedef struct FT_Size_RequestRec_
{
FT_Size_Request_Type type;
FT_Long width;
FT_Long height;
FT_UInt horiResolution;
FT_UInt vertResolution;
} FT_Size_RequestRec;
FT_Size_Request_Type_ could be represented by char. Maybe the
compiler makes it an int, maybe not.
Maybe the compiler makes 'FT_Size_Request_Type_' char sized, but
then pads 'FT_Size_RequestRec_' to align 'width' to 4 bytes...or
maybe not.
Maybe a member of 'FT_Size_Request_Type_' sits right before a
char or bool in some struct..so can't rely on padding.
I don't really see a way to deal with this aside from branching
the entire library and inserting something like
'FT_SIZE_REQUEST_TYPE__FORCE_INT = 0x' into every enum
incase the devs used it in a struct.
Re: Forwarding Uncopyable Static Array Elements
On Sunday, 17 September 2017 at 13:00:04 UTC, Nordlöw wrote:
How can
T[n] asStatic(T, size_t n)(T[n] arr)
{
import std.traits : isCopyable;
static if (isCopyable!T)
{
return arr;
}
else
{
static assert(false, "TODO support forwarding of
uncopyable elements");
}
}
be extended to support uncopyable element types?
This works for me
T[n] asStatic(T, size_t n)(T[n] x)
{
import std.traits : isCopyable;
static if (isCopyable!T)
{
return x;
}
else
{
T[n] y = void;
// TODO why doesn't this work here?
// import std.algorithm.mutation : moveEmplaceAll;
// moveEmplaceAll(x[], y[]);
foreach (const ix, ref value; x)
{
import std.algorithm.mutation : move;
move(value, y[ix]);
}
return y;
}
}
Why does `moveEmplaceAll` error here?
How to Skip some field/word in formattRead?
Hi,
Is it possible to read just the second word from an input string
and skip all others?
"one two three".formattedRead!("%s %s", _, saveme)
The point is I want to skip the first/third word (`one`, `third`)
and read the second word (`two`) into the variable `saveme`. For
now I have to declare temporary reference
string _;
"one two three".formattedRead!("%s %s %s", _, saveme, _);
Well, `_` is acceptable; in my example, the value of `_` would be
`three[\n]`
Is there any better/cleaner way?
Thanks for your reading.
Re: Internal error mixing templates and CTFE
On Friday, 15 September 2017 at 15:48:10 UTC, Stefan Koch wrote:
are you using ucent ?
Not that I know of, the code above is the full code (not sure
what's used internally for string literals).
I was using dmd 2.076 from the apt repo but the error also
happens in LDC 1.3[1].
Is there an easy way for me to test newCTFE?
The reduced version to get the same error is:
```
struct Content{string[] parts;}
void main(){
enum Content content = {};
content.parts ~= "";
}
```
Strange (for a CTFE noob like me anyway) thing is the following
code produces no error or warning. (obviously it doesn't do what
it looks like it does)
```
struct Content{
string[] parts;
void add(string s)(){
parts ~= "Part: "~s;
}
}
void main(){
enum Content content = {};
content.add!("Header")();
}
```
I would have thought both the code in the OP and the above two
codes should produce a warning pointing out that using a compile
time value like that has no useful effect. As this would be
useful information for noobs like me...
Actually now that I think about it there could be a "valid" use..
ie if the add function set global state... does this even work...
(checks) ... yes it does... so I guess a warning cant really
happen then.
[1] Here is the LDC backtrace:
ldc2: /build/ldc-6CClyQ/ldc-1.3.0/gen/dvalue.cpp:43: llvm::Value*
DtoLVal(DValue*): Assertion `lval' failed.
#0 0x7f1d568658a8
llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/usr/lib/x86_64-linux-gnu/libLLVM-4.0.so.1+0x76e8a8)
#1 0x7f1d56863786 llvm::sys::RunSignalHandlers()
(/usr/lib/x86_64-linux-gnu/libLLVM-4.0.so.1+0x76c786)
#2 0x7f1d568638e5
(/usr/lib/x86_64-linux-gnu/libLLVM-4.0.so.1+0x76c8e5)
#3 0x7f1d55ce2670 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x11670)
#4 0x7f1d5509977f gsignal
/build/glibc-mXZSwJ/glibc-2.24/signal/../sysdeps/unix/sysv/linux/raise.c:58:0
#5 0x7f1d5509b37a abort
/build/glibc-mXZSwJ/glibc-2.24/stdlib/abort.c:91:0
#6 0x7f1d55091b47 __assert_fail_base
/build/glibc-mXZSwJ/glibc-2.24/assert/assert.c:92:0
#7 0x7f1d55091bf2 (/lib/x86_64-linux-gnu/libc.so.6+0x2dbf2)
#8 0x5644df8d2310 (ldc2+0x3cb310)
...
#25 0x5644df909370 (ldc2+0x402370)
#26 0x7f1d550843f1 __libc_start_main
/build/glibc-mXZSwJ/glibc-2.24/csu/../csu/libc-start.c:325:0
#27 0x5644df6538ea (ldc2+0x14c8ea)
Aborted (core dumped)
ldc2 failed with exit code 134.
Re: Error 16: Index Range error while building examples from D Web development
On Sunday, 17 September 2017 at 11:42:16 UTC, kerdemdemir wrote: Hi, Thanks its price dropped to 10 Euros I bought the the D Web Development book and I were trying to build some examples. The example in Chapter3 called noteapp4 is giving me this error : [...] Optlink bug I guess? try using -ms32coff (? check dmd's help) or -m64, they will both use the MS linker (which is hopefully bug free :) )
Forwarding Uncopyable Static Array Elements
How can
T[n] asStatic(T, size_t n)(T[n] arr)
{
import std.traits : isCopyable;
static if (isCopyable!T)
{
return arr;
}
else
{
static assert(false, "TODO support forwarding of
uncopyable elements");
}
}
be extended to support uncopyable element types?
Re: Forwarding Uncopyable Static Array Elements
On Sunday, 17 September 2017 at 13:00:04 UTC, Nordlöw wrote: How can ... be extended to support uncopyable element types? That is, when `T` is uncopyable.
Error 16: Index Range error while building examples from D Web development
Hi, Thanks its price dropped to 10 Euros I bought the the D Web Development book and I were trying to build some examples. The example in Chapter3 called noteapp4 is giving me this error : Performing "debug" build using dmd for x86. noteapp4 ~master: building configuration "application"... C:\Users\Erdem\AppData\Roaming\dub\packages\vibe-d-0.7.32\vibe-d\source\vibe\http\server.d(286,33): Deprecation: alias diet.traits.FilterCallback is deprecated - Use SafeFilterCallback instead. Compiling Diet HTML template create.dt... Compiling Diet HTML template listnotes.dt... Linking... OPTLINK (R) for Win32 Release 8.00.17 Copyright (C) Digital Mars 1989-2013 All rights reserved. http://www.digitalmars.com/ctg/optlink.html .dub\build\application-debug-windows-x86-dmd_2075-102ED5AC10E8F023CF2D8D690787ADD9\noteapp4.obj(noteapp4) Offset 23F7EH Record Type 009D Error 16: Index Range Error: linker exited with status 1 dmd failed with exit code 1. Meanwhile hello world example compiling. I am on windows 10 and C:\D\dmd2\windows\bin>dmd.exe --version DMD32 D Compiler v2.075.0 Do you guys have any idea about what I am doing wrong? Thanks
Re: Gtk toArray List funkiness
On 16-09-17 23:08, Joseph wrote:
On Saturday, 16 September 2017 at 20:54:21 UTC, Mike Wey wrote:
On 16-09-17 20:58, Joseph wrote:
https://github.com/gtkd-developers/GtkD/blob/master/demos/gtkD/TestWindow/TestWindow.d
has the code
foreach ( int i, string selection ; fs.getSelections())
{
writeln("File(s) selected [%d] %s",i,selection);
}
which is invalid for the demo, but
foreach ( int i, string selection ;
fd.getFilenames().toArray!(string,?))
{
writeln("File(s) selected [%d] %s",i,selection);
}
results in some funky code. Gives errors in ObjectG about uint when
setting ? to string, string* or void* or even uint:
GtkD\generated\gtkd\gobject\ObjectG.d(172): Error: incompatible types
for ((obj) is (null)): 'uint' and 'typeof(null)'
GtkD\generated\gtkd\glib\ListSG.d(98): Error: template instance
gobject.ObjectG.ObjectG.getDObject!(string, string, uint) error
instantiating
test.d(91): instantiated from here: toArray!(string, uint)
test.d(93): Error: invalid foreach aggregate `fd.getFilenames()`,
define opApply(), range primitives, or use .tupleof
without specifying ? it assumes it's a tuple, which seems wrong?
public T[] toArray(T, TC = typeof(T.tupleof[0]))()
{
T[] arr = new T[length()];
ListSG list = this;
size_t count;
while(list !is null && count < arr.length)
{
arr[count] = ObjectG.getDObject!(T)(cast(TC)list.data);
list = list.next();
count++;
}
return arr;
}
foreach ( int i, Value
selection ; fd.getFilenames().toArray!(Value)())
{
writeln("File(s) selected [%d] %s",i,selection.getString);
}
crashes ;/
I'm not sure what types are what and it changes depending on the
input. I think Value is the wrong type to use but string doesn't work
so...
ListG and ListSG are missing an toArray overload for string. And
getFilenames returns a list of strings.
I've added a string overload for toArray:
https://github.com/gtkd-developers/GtkD/commit/ba20490b38e502a4d281226572c83c662a700858
public ListSG getFilenames()
{
auto p = gtk_file_chooser_get_filenames(getFileChooserStruct());
if(p is null)
{
return null;
}
return new ListSG(cast(GSList*) p, true);
}
Doesn't return a list of strings? That was the first thing I tried and
the foreach loop wouldn't work over it because it was a ListSG.
Thanks.
getFilenames returns a singly linked list of C strings, ie the data
member is a char*.
With the changes in master you can use toArray!string() to get an array
of strings out of it.
Or you can loop over the list:
```
auto list = fd.getFilenames();
string[] files;
while ( list.next !is null )
{
files ~= to!string(cast(char*)list.data);
list = list.next;
}
```
--
Mike Wey
Re: How to list all process directories under /proc/
On Sunday, 17 September 2017 at 08:32:24 UTC, Ky-Anh Huynh wrote:
My bad. Range doesn't support. The correct pattern is
[code]
foreach (string fstatm; dirEntries("/proc/", "[0123456789]*",
SpanMode.shallow)) {
writefln("pid %s", fstatm);
}
[/code]
Is there a way to make this simpler?
The official documentation here
https://dlang.org/phobos/std_path.html#.globMatch refers to the
wiki page https://en.wikipedia.org/wiki/Glob_%28programming%29 .
However I think the popular glob rules (man 7 glob) are not
supported.
Re: Temporarily adding -vgc to a DUB build
On Sunday, 17 September 2017 at 01:50:08 UTC, Nicholas Wilson
wrote:
On Saturday, 16 September 2017 at 21:45:34 UTC, Nordlöw wrote:
How do I temporarily enable -vgc when building my app with DUB?
I've tried
DFLAGS=-vgc /usr/bin/dub build --build=unittest
but it doesn't seem to have any effect as it doesn't rebuild
directly after the call
/usr/bin/dub build --build=unittest
I'm using DUB version 1.5.0
Or is adding a new build configuration, say unittest-vgc, the
only way to accomplish this?
Setting the dflags in the dub.json should work.
This is what I use for dcompute:
{
...
"dflags" : ["-mdcompute-targets=cuda-210" ,"-oq",
"-betterC"],
...
}
so just change those flags to "-vgc" should do the trick.
You can also just execute:
export DFLAGS=-vgc
before running dub. That should work since as far as I know
"export" is needed to make env var visible to other processes
started from the same shell session.
Re: How to list all process directories under /proc/
On Sunday, 17 September 2017 at 08:15:58 UTC, Ky-Anh Huynh wrote:
Hi,
I want to list all processes by scanning /proc/. The following
code doesn't work
[code]
foreach (string fstatm; dirEntries("/proc/", "[0-9]*",
SpanMode.shallow)) {
writefln("pid %s", fstatm);
}
[/code]
as it only list a few entries before exiting
[code]
pid /proc/9
pid /proc/935
pid /proc/9146
pid /proc/9149
pid /proc/9150
pid /proc/9151
pid /proc/9756
pid /proc/9759
pid /proc/9760
pid /proc/9761
[/code]
I don't want to use `SpanMode.depth` or `SpanMode.breadth`
because it will scan so deeply and there would be a permission
problem.
Any ideas?
Thanks a lot
My bad. Range doesn't support. The correct pattern is
[code]
foreach (string fstatm; dirEntries("/proc/", "[0123456789]*",
SpanMode.shallow)) {
writefln("pid %s", fstatm);
}
[/code]
Is there a way to make this simpler?
How to list all process directories under /proc/
Hi,
I want to list all processes by scanning /proc/. The following
code doesn't work
[code]
foreach (string fstatm; dirEntries("/proc/", "[0-9]*",
SpanMode.shallow)) {
writefln("pid %s", fstatm);
}
[/code]
as it only list a few entries before exiting
[code]
pid /proc/9
pid /proc/935
pid /proc/9146
pid /proc/9149
pid /proc/9150
pid /proc/9151
pid /proc/9756
pid /proc/9759
pid /proc/9760
pid /proc/9761
[/code]
I don't want to use `SpanMode.depth` or `SpanMode.breadth`
because it will scan so deeply and there would be a permission
problem.
Any ideas?
Thanks a lot
Using Parallel prints duplicates nor misses.
Hi,
Request your help, the below code sometime prints duplicate and
some time miss the entry. due to which any code written below the
line "foreach (d; parallel(dFiles[], 1))" are some time
duplicated and some time not executed(skips). tired adding sort
and uniq to the writeln but no luck.
Code:
import std.algorithm: filter, map, sort, uniq;
import std.container;
import std.file: SpanMode, dirEntries, isDir;
import std.stdio: writeln;
import std.parallelism: parallel;
void main () {
auto SizeDirlst = Array!string ("C:\\Temp\\TEAM\\BACKUP",
"C:\\Temp\\TEAM\\EXPORT");
foreach (FFs; SizeDirlst[]) {
auto dFiles = Array!string ((dirEntries(FFs,
SpanMode.shallow).filter!(a => a.isDir))[].map!(a => a.name));
foreach (d; parallel(dFiles[], 1)) { writeln(d); }
}
}
Output 1:
C:\Temp\TEAM\BACKUP\dir1
C:\Temp\TEAM\BACKUP\DND3
C:\Temp\TEAM\BACKUP\dir2 - Duplicate
C:\Temp\TEAM\BACKUP\dir2 - Duplicate
C:\Temp\TEAM\EXPORT\DND6
Output 2:
C:\Temp\TEAM\BACKUP\dir1
C:\Temp\TEAM\BACKUP\DND3
C:\Temp\TEAM\BACKUP\dir2 - Duplicate
C:\Temp\TEAM\BACKUP\dir2 - Duplicate
C:\Temp\TEAM\EXPORT\DND6 - Missing
From,
Vino.B
