On Monday, 18 June 2018 at 09:28:00 UTC, rikki cattermole wrote:
On 18/06/2018 9:24 PM, Mr.Bingo wrote:
On Monday, 18 June 2018 at 09:10:59 UTC, rikki cattermole
wrote:
This doesn't work with depreciation warnings.
There won't be a way to check for those (I think).
Easier to not worry about
On Monday, 18 June 2018 at 03:58:47 UTC, Neia Neutuladh wrote:
...
yeah, at an AST level it makes sense why it was implemented like
this.
it's unfortunate that there's no straightforward way to express
'finally(success) {'.
On Sunday, 17 June 2018 at 12:10:33 UTC, Nicholas Wilson wrote:
I suspect scope(success) is lowered because scope(exit) and
scope(failure)
are, and that would result in a simpler (compiler)
implementation of it.
does adding nothrow to main fix it? For dcompute I specifically
allow
Hello,
I'm not sure whether I'm missing something obvious here, but is
there a reason for scope(success) being lowered to a try-catch
statement?
I would have expected only scope(exit) and scope(failure) to
actually interact with exception handling, while scope(success)
simply places code on
On Thursday, 8 February 2018 at 21:09:33 UTC, JN wrote:
Hi,
is there any way to debug binaries on Windows? I'd at least
like to know which line of code made it crash. If it's D code,
I get a call trace usually, but if it's a call to a C library,
I get a crash and that's it. I am using VSCode
On Saturday, 3 September 2016 at 12:33:26 UTC, Illuminati wrote:
On Saturday, 3 September 2016 at 07:44:28 UTC, Cauterite wrote:
On Friday, 2 September 2016 at 19:38:34 UTC, Illuminati wrote:
I am trying to create a hash table and would like an
efficient way to be able to know if an element
On Friday, 2 September 2016 at 19:38:34 UTC, Illuminati wrote:
I am trying to create a hash table and would like an efficient
way to be able to know if an element exists to test for
collisions.
Just do a regular lookup on the hash? It's an O(1) operation,
like 4 instructions.
On Friday, 2 September 2016 at 06:56:07 UTC, Lutger wrote:
You could do:
names.find("bob").chain(only(``)).front;
It's not very expressive though.
How does one test whether a symbol is deprecated? I would have
expected something like: __traits(isDeprecated, foo).
In the compiler we have Dsymbol.isDeprecated, is that not
accessible in any way from code?
The only solution I can think of is compiling with -de and using
__traits(compiles,
On Wednesday, 31 August 2016 at 16:17:51 UTC, Yuxuan Shui wrote:
No. When you use assumeUnique, you know something the compiler
does know, and have to use assumeUnique to tell the compiler
that (at least when you use it correctly). But when you use
assumeNogc, it's always because you want to
On Wednesday, 31 August 2016 at 17:37:25 UTC, solidstate1991
wrote:
I decided to add a functionality that if multiple programs use
the same instance of the library on the same computer, the
messages will be passed directly instead of via networking.
What you're describing here is not actually
On Wednesday, 31 August 2016 at 15:10:11 UTC, Seb wrote:
AssumeNogc is potentially dangerous, so I don't know whether it
can make it directly, but only if you try you know ;-)
So is assumeUnique
On Wednesday, 31 August 2016 at 11:43:12 UTC, Nick wrote:
That's quite nice, but not what I'm looking for.
What Calypso does, as far as I can see, is to make it possible
to compile C++ and D together. I'm looking for a compiler that
takes in D code and spits out either C or C++ code.
Your
On Tuesday, 30 August 2016 at 14:38:47 UTC, Nordlöw wrote:
Just being able to print a string is not good enough. I want
the variadic part writeln so I can debug-print values in my
buggy code. Do you have a similar solution?
Take a look at the example here:
On Monday, 29 August 2016 at 21:24:52 UTC, A D dev wrote:
Hi group,
Does D have anything like the generators of Python and some
other languages?
Thanks.
Ranges serve some of the purposes that generators are often used
for: http://dlang.org/phobos/std_range.html
But you can of course
On Monday, 29 August 2016 at 12:53:26 UTC, Jesper Tholstrup wrote:
Personally, I would prefer 'intersect' as a function name over
'∩' anytime.
Which benifits does the symbols add?
Sounds like you'd love Java.
x = new BigDecimal("0.1")
x.negate().divide(y).compareTo(z)
who needs symbols? >_>
On Sunday, 28 August 2016 at 05:21:03 UTC, Tofu Ninja wrote:
Are unicode function names not supported in dmd?
Here's a few ANSI characters you can use (and can type with
alt-codes):
ª º · Ø ø µ ƒ
I use º pretty often, it makes a nice sigil.
On Saturday, 27 August 2016 at 01:06:53 UTC, Illuminati wrote:
Surely one of the many intelligent people on this forum should
be able to implement some of the basic structures fairly
quickly?
Most of these people are happy to use the GC, so @nogc structures
are not a priority.
On Friday, 26 August 2016 at 23:38:02 UTC, Illuminati wrote:
Does D have any such thing? I'm having to recreate the wheel
here and it isn't fun ;/ Getting in the way of real work ;/
@nogc is such a new language feature that you can't expect a lot
of support yet from e.g. the standard
On Friday, 26 August 2016 at 23:28:27 UTC, pineapple wrote:
I've grown to very much appreciate how context initialization
and teardown can be very conveniently handled using `with` in
Python. Is there any clean way to imitate this syntax in D?
Yep, scope guards.
auto p = OpenProcess(...);
On Friday, 26 August 2016 at 15:14:42 UTC, Steven Schveighoffer
wrote:
FYI, you cannot make this patch until we fully deprecate the
use of TypeInfo.init:
https://github.com/dlang/druntime/blob/master/src/object.d#L294
So at least until 2.075.
-Steve
Ah yes, good thinking. I'll keep that in
On Friday, 26 August 2016 at 09:48:00 UTC, Jonathan M Davis wrote:
And I expect that it will become an error at some point in the
future to define an init member for a user-defined type, at
which point, there won't be any choice about fixing it.
I might take a crack at this patch. Sounds
How can I get the initial value of an arbitrary type? Since any
struct can override it, .init is not reliable:
struct Z {
enum init = 6;
string val = `asdf`;
};
assert(Z.init == 6);
assert(typeof(Z()).init == 6);
I know I could use
*(cast(Z*) typeid(Z).initializer.ptr)
but that
On Thursday, 25 August 2016 at 10:36:21 UTC, Daniel Kozak wrote:
Btw, tehre is no need for extra semicolon (`;`) after enum and
struct definition
Thanks. This forum insists on reminding me every time I write
code here.
On Wednesday, 24 August 2016 at 23:04:25 UTC, Illuminati wrote:
Well those other answers aren't wrong, but I envisioned that
you'd have multiple categories within your sub-enums and whatnot,
so you'd need something more like this:
struct A {
enum X {
one,
On Monday, 22 August 2016 at 04:37:50 UTC, stunaep wrote:
I made a union to convert between int bits and floats, but the
values are coming out wrong sometimes.
I can already tell what this is going to be...
The problem is almost certainly nothing to do with your union,
it's this line:
float
On Sunday, 21 August 2016 at 18:31:26 UTC, Zane wrote:
I see - That makes sense, but is there no way to "pause/stop"
the GC, but still be able to use the 'new' syntax?
Oh you can use `new` when the GC is disabled, no problem. All the
GC's functionality is still available.
But be careful
On Sunday, 21 August 2016 at 16:14:53 UTC, Zane wrote:
1) If using the GC, but for whatever reason, I need to free
something _right now_, is core.GC.free() the proper way to do
this?
The main problem is that `new` does not necessarily give you a
pointer to the start of an allocation, and
On Sunday, 21 August 2016 at 16:14:53 UTC, Zane wrote:
5) Is there a way to do simple heap allocation with 'new' while
ensuring the GC doesn't deallocate until I want it to?
While my earlier suggestion of using malloc/emplace is one
option, another is to use `GC.addRoot(objPtr)`. It ensures
On Sunday, 21 August 2016 at 16:14:53 UTC, Zane wrote:
2) Does calling object.destroy() mean that the object is marked
for future collection? If not, how can I ensure it is properly
marked.
Because the GC is not of the incremental type, it can't perform
any marking outside of a
On Sunday, 21 August 2016 at 16:14:53 UTC, Zane wrote:
6) If the GC is off, how is allocation/deallocation handled?
Can I still use new for example (and how do I dealloc)?
All the allocation/deallocation functionality is the same as
normal, except the GC won't start a collection cycle unless
On Sunday, 21 August 2016 at 16:14:53 UTC, Zane wrote:
5) Is there a way to do simple heap allocation with 'new' while
ensuring the GC doesn't deallocate until I want it to?
I can answer this at least,
If you don't want the GC to ever collect the object itself,
here's the best way:
Allocate
On Friday, 19 August 2016 at 21:03:22 UTC, Seb wrote:
http://dlang.org/phobos-prerelease/std_digest_murmurhash.html
Ah great, I just finished writing my own murmurhash digest module
(
https://github.com/Cauterite/phobos/blob/murmur/std/digest/murmur.d ), and now I discover someone's already
Regarding the MurmurHash3 implementation in core.internal.hash,
it is my understanding that:
// assuming a and b are uints
bytesHash([a, b], 0) == bytesHash([b], bytesHash([a], 0))
Is this correct?
I'm just not quite certain of this property when I try to read
the code myself, and I
On Wednesday, 17 August 2016 at 13:33:26 UTC, Steven
Schveighoffer wrote:
I think the OP's case is a bug. Please file.
Thanks, I've filed it. Just wanted to get a second opinion before
concluding that it's a bug.
On Wednesday, 17 August 2016 at 13:18:06 UTC, Adam D. Ruppe wrote:
Best you can do is use them in an alias argument directly, but
you cannot use them in an enum argument.
I think you missed the point; it works perfectly fine without
having this `({return 0;})()` in the template body (which,
// -- Example: --
template A(alias Arg) {
enum A = Arg;
enum Unrelated = ({return 0;})(); // this line prevent
compilation
};
void main() {
enum FnPtr =
enum _ = A!FnPtr;
};
void asdf() {};
// ( https://dpaste.dzfl.pl/79301f12e5fc )
Just by having a
On Tuesday, 16 August 2016 at 21:01:14 UTC, cy wrote:
This has also been annoying me lately, so I came up with this
workaround:
InputRange!T X = inputRangeObject(Src);
X.take(6); // remove+return items 0 to 5
X.take(3); // remove+return items 6 to 8
On Sunday, 14 August 2016 at 16:21:58 UTC, D.Rex wrote:
so '();' works the same as 'foo.bar();'?
with pointers, D automatically rewrites expressions like this:
f.fooMethod()
to this:
(*f).fooMethod()
which is why you're able to index an object-pointer-pointer
(Foo*) the same
On Saturday, 13 August 2016 at 18:34:43 UTC, Engine Machine wrote:
static if (hasStaticMember!(T, "foo"))
Here I suspect you're looking for this:
__traits(isStaticFunction, __traits(getMember, T, "foo"))
On Saturday, 13 August 2016 at 18:34:43 UTC, Engine Machine wrote:
auto ref foo(T, Args...)(args)
{
static if (hasStaticMember!(T, "foo"))
return T.foo!(T)(args);
}
Basically I want to forward the *static* call to T if
possible(if foo exists in T). The main problem is actually
On Saturday, 13 August 2016 at 15:47:51 UTC, D.Rex wrote:
/* memory.d file */
module memory;
import include.linux.sched;/* contains task_struct
definition */
void free_page_tables(task_struct* tsk) {
/* do something with */
}
And to use the method from somewhere else
/* use
On Friday, 12 August 2016 at 18:59:35 UTC, Guillaume Piolat wrote:
On Friday, 12 August 2016 at 10:45:22 UTC, Cauterite wrote:
Thanks, this is very helpful. I already feel much more confident
about the idea.
My use is definitely the 'whole-lifetime' case, so I might be
able to get away
Thanks colon-nazis, I'll take that into consideration ¬_¬
On Friday, 12 August 2016 at 16:50:43 UTC, ag0aep6g wrote:
On 08/12/2016 05:23 PM, Cauterite wrote:
No semicolon there, please.
Why would I not terminate a declaration with a semi-colon?
Why should a declaration not end in a semi-colon just because the
last token is a brace?
Why should I not
On Friday, 12 August 2016 at 15:21:22 UTC, D.Rex wrote:
extern unsigned long free_page_tables(struct task_struct * tsk);
extern(C) ulong free_page_tables(task_struct* tsk);
void main() {
task_struct tsk = …… ;
free_page_tables();
};
That should be what you're after?
I'm planning on 'importing' a thread into the D runtime using
thread_attachThis(), and was just wondering about the potential
pitfalls of this process. For example:
- Would having an entry function other than
core.thread.thread_entryPoint() pose problems? What about during
stack unwinding?
On Monday, 8 August 2016 at 10:21:47 UTC, ag0aep6g wrote:
Also thanks for submitting the bug for me.
On Monday, 8 August 2016 at 10:05:58 UTC, ag0aep6g wrote:
The first assert compares the return types of f1 and f2. They
both return `void`, so everything's fine there.
I think you're mistaken about this. typeof(S.f1) definitely gives
the type of the function, not of the return. Try it out:
On Sunday, 7 August 2016 at 00:28:40 UTC, Alfred Pincher wrote:
this is a very nice feature. I hope D has something similar?
If you want to implement that kind of allocation tracking you'll
probably want to use gc_getProxy()+gc_setProxy(). They're global
C functions you can access by
See: https://dpaste.dzfl.pl/2ec6780d4b25
We have two methods defined, f1 and f2, where f2 is static but
they have otherwise identical signatures.
We can see from the disassembly that f1 receives a `this` pointer
while f2 does not.
Yet, typeof() == typeof(). This makes no sense, how can the
On Monday, 8 August 2016 at 02:36:24 UTC, Engine Machine wrote:
Error: template Mem cannot deduce function from argument types
!(cast(eException)1280L, "main.d", 38u, "main.WinMain")(int),
candidates are:
Mem(T, B = eX, string file = __FILE__, uint line = __LINE__,
string func =
On Friday, 5 August 2016 at 10:25:42 UTC, Nordlöw wrote:
Should range members front() and back() assert() or throw() on
emptyness?
I'm pretty sure it's assert() here. The contract is that the
caller is responsible for checking emptiness beforehand, and the
whole of Phobos is coded around
On Saturday, 30 July 2016 at 04:12:45 UTC, stunaep wrote:
Thank you. This is just what I needed. I am curious though as
to why this doesn't work with strings. It would work if I
removed immutable from the Boxed constructor but I thought
strings were immutable. I get a compiler error 'not
On Friday, 29 July 2016 at 20:26:47 UTC, Ali Çehreli wrote:
I was going to suggest Algebraic because it allows arrays of
mixed primitive types (wrapped in Algebraic):
https://dlang.org/phobos/std_variant.html#.Algebraic
Ali
It could work, but keep in mind Algebraic is a structure, not
On Friday, 29 July 2016 at 20:13:34 UTC, stunaep wrote:
I have some java code I need to convert and at one point it
uses an Object[] array to store various ints, longs, and
strings. Java has built in Integer and Long classes that wrap
the primitives in an object and strings are already
On Friday, 29 July 2016 at 13:18:00 UTC, Suliman wrote:
But I can't understand if D have GC it should remove objects
when their life is finished. When I should to call `destroy`?
What would be if I will not call it?
`destroy` is mainly about running destructors deterministically.
From the
On Tuesday, 26 July 2016 at 13:09:28 UTC, Richard wrote:
Hello all,
try using some parentheses:
(n%p==0) ? (n/=p) : (p+=1) ;
On Tuesday, 26 July 2016 at 00:54:59 UTC, Michael Coulombe wrote:
If that's ok, then try out std.traits.Select or
std.traits.select:
https://dlang.org/phobos/std_traits.html#Select
Damn, I looked real hard for that template, I knew it existed. I
expected it to be in std.meta though.
On Monday, 25 July 2016 at 02:15:12 UTC, Gorge Jingale wrote:
Is there a static ternary if?
(A == B) ? C : D;
for compile type that works like static if.
You can pretty easily make your own;
template staticIf(bool cond, alias a, alias b) {
static if (cond) {
alias staticIf = a;
On Monday, 25 July 2016 at 12:47:25 UTC, Cauterite wrote:
(!__traits(compiles, r is null) || r !is null) && !r.empty
Ah, whoops that's wrong, looks like ketmar had the right idea.
On Monday, 25 July 2016 at 12:37:18 UTC, Bahman Movaqar wrote:
But I'm curious; how can I check for a
`null` in this case?
Well, if you're happy with assertion failure by access violation,
you may not even need to check for null, because generally if you
try to call .empty on a null pointer
On Monday, 25 July 2016 at 04:58:55 UTC, Gorge Jingale wrote:
debug mixin("public"); else mixin("private");
Perhaps you could build a patched DMD which ignores 'private'.
Then when you want to compile with -debug, use this custom DMD,
and use the standard DMD the rest of the time.
I
Here's the output I get (DMD v2.068.2):
[1, 3, 10, 12, 21, 30, 100, 102, 111, 120, 201, 210]
core.exception.AssertError@std\range\package.d(4603): Assertion
failure
On Saturday, 7 November 2015 at 11:25:39 UTC, drug wrote:
What are alternatives for it? Thanks.
Right here:
http://wiki.dlang.org/Online_compilers
dpaste.dzfl.pl is the best one though :/
On Friday, 6 November 2015 at 13:16:46 UTC, Suliman wrote:
On Windows 7 it's work fine. On Windows 10 (clean install) it's
do not start and require MSVCR120.dll
D doesn't make particularly heavy use of the C runtime, so
there's a good chance you can link against a different C runtime
DLL —
On Wednesday, 28 October 2015 at 16:04:52 UTC, Vincent R wrote:
Hi,
I am starting my first project in D and I would like to do a
Bonjour(Zeroconf) browser app.
My first task is to write a binding to the dns_sd library but I
have an issue with the following macro:
#define
The problem is that the compiler and linker are separate
programs; the compiler has to generate input for the linker in
the form of a file.
RDMD automatically cleans up all the .obj garbage, so one
solution is to run
rdmd --build-only asdf.d
Also, the -of flag is a little more
On Sunday, 25 October 2015 at 08:56:52 UTC, Jonathan M Davis
wrote:
It is my understanding that the GC does not normally ever
return memory to the OS
It seems that it does now. In smallAlloc() and bigAlloc(), if
allocation fails it collects garbage and then:
if (lowMem) minimize();
On
Correction: you said
"the GC does not normally ever return memory"
and you're right, because applications do not "normally" consume
>95% of their address space.
I'm afraid what you're asking for is impossible. Because 'a' and
'b' are both slices, they each have their own 'length' field.
When you do 'a = []', you're effectively doing 'a.length = 0'.
There's no way to change 'b.length' through 'a'. To get that
effect, you'd have to do something like
On Thursday, 22 October 2015 at 04:25:01 UTC, MobPassenger wrote:
On Thursday, 22 October 2015 at 04:01:16 UTC, Mike Parker wrote:
On Thursday, 22 October 2015 at 03:19:49 UTC, MobPassenger
wrote:
code:
---
struct Foo
{
bool opIn_r(T)(T t){return false;}
}
This needs to be marked with
On Tuesday, 29 September 2015 at 03:31:44 UTC, Nicholas Wilson
wrote:
so I have a bunch of enums (0 .. n) that i also want to
represent as flags ( 1 << n foreach n ). Is there anyway to do
this other than a string mixin?
You could cheat with operator overloading:
enum blah {
73 matches
Mail list logo
