test.d
---
void main()
{
import std.net.curl;
import std.stdio;
writeln(get(http://google.com;));
}
---
rdmd -g test.d
---
std.net.curl.CurlException@std\net\curl.d(3691): couldn't resolve
host name on handle 26B4878
0x0040572A in pure @safe void
std.datetime contains parseRFC822DateTime to convert from an
RFC822/RFC5322 formatted string (ala Sat, 6 Jan 1990 12:14:19
-0800) to a SysTime.
Does it contain anything for the converse - converting from a
SysTime to Sat, 6 Jan 1990 12:14:19 -0800?
If not, should it?
On Tuesday, 21 April 2015 at 10:28:32 UTC, Jonathan M Davis wrote:
On Tuesday, April 21, 2015 08:14:10 Jakob Ovrum via
Digitalmars-d-learn wrote:
std.datetime contains parseRFC822DateTime to convert from an
RFC822/RFC5322 formatted string (ala Sat, 6 Jan 1990 12:14:19
-0800) to a SysTime.
Does
On Sunday, 3 May 2015 at 05:20:34 UTC, Ali Çehreli wrote:
We know that 'in' is equivalent to const scope:
http://dlang.org/function.html#parameters
So, the constness of 'in' is transitive as well, right?
Ali
Of course, there's no concept of non-transitive const in D:
struct S
{
On Wednesday, 29 April 2015 at 14:46:04 UTC, Per Nordlöw wrote:
On Tuesday, 28 April 2015 at 23:09:27 UTC, Per Nordlöw wrote:
On Tuesday, 28 April 2015 at 16:20:24 UTC, Per Nordlöw wrote:
I update my Github repo. I had forgotten to push my latest
changes.
I solved it.
I started working on
On Saturday, 16 May 2015 at 09:36:30 UTC, Per Nordlöw wrote:
After having written a lot of text pattern matching functions
using Phobos' findSplit, findSplitBefore, findSplitAfter, and
some more I've written myself I've come to the conclusion that
I would like to enhance these functions to
On Saturday, 16 May 2015 at 10:28:11 UTC, Per Nordlöw wrote:
Nice! Should I make a PR?
I think that would be very welcome.
On Tuesday, 12 May 2015 at 13:30:22 UTC, Idan Arye wrote:
A little hacky, but how about casting it to a static array?
http://dpaste.dzfl.pl/d0059e6e6c09
This PR[1] achieves this without making a copy.
[1] https://github.com/D-Programming-Language/phobos/pull/3198
On Saturday, 11 April 2015 at 10:50:17 UTC, matovitch wrote:
Hello,
The question is in the title. It should be possible for a
finite random access ranges to perform an indexed foreach no ?
I mean like :
foreach(size_t i = 0, auto ref x; R)
{
/*...*/
}
Why are other foreach statements
On Saturday, 11 April 2015 at 12:04:06 UTC, matovitch wrote:
well ldc doesn't compile :
kmeans.d(40): Error: no property 'enumerate' for type 'Range'
With -O -release -inline I get around 2s with foreach and 0.5s
with a simple for.
LDC does not yet support the 2.067 front-end version in
On Sunday, 8 November 2015 at 19:57:34 UTC, Freddy wrote:
---
import std.algorithm;
import std.range;
import std.stdio;
void main(){
only(iota(0,4),[1,4,5]).writeln;
}
---
How can I call std.range.only with different range types?
`only` is for creating a range from a list of values.
On Saturday, 7 November 2015 at 18:39:22 UTC, Joakim wrote:
OK, I've rebuilt ldc with one small tweak: I've added the
current directory to its rpath and bundled my system libconfig
along with it, which is what the official ldc release does too.
You shouldn't need libconfig installed by your
On Tuesday, 3 November 2015 at 08:41:11 UTC, Nordlöw wrote:
Is there a reason why std.algorithm.iteration.filter() doesn't
propagate bidirectional access?
http://dlang.org/phobos/std_algorithm_iteration.html#filterBidirectional
On Tuesday, 3 November 2015 at 01:55:27 UTC, Freddy wrote:
Is there any way I can Unionize range Types?
---
auto primeFactors(T)(T t, T div = 2)
{
if (t % div == 0)
{
return t.only.chain(primeFactors(t / div, div));
}
if (div > t)
{
return [];
}
else
On Tuesday, 3 November 2015 at 23:41:10 UTC, maik klein wrote:
Is it possible to filter variadics for example if I would call
void printSumIntFloats(Ts...)(Ts ts){...}
printSumIntFloats(1,1.0f,2,2.0f);
I want to print the sum of all integers and the sum of all
floats.
//Pseudo code
void
On Friday, 6 November 2015 at 20:24:18 UTC, Joakim wrote:
On Friday, 6 November 2015 at 20:10:36 UTC, Jakob Ovrum wrote:
On Friday, 6 November 2015 at 11:56:35 UTC, Joakim wrote:
[...]
Thanks for the thorough instructions! LLVM is rather massive
and I'd prefer to avoid building it if I can,
On Friday, 6 November 2015 at 11:56:35 UTC, Joakim wrote:
https://github.com/joakim-noah/android/releases/tag/runners
You will need a linux/x86 host and the Android NDK, optionally
the SDK if you want to create a GUI app. A slightly older
build was used to create the test runners from
On Wednesday, 4 November 2015 at 09:48:40 UTC, maik klein wrote:
Thanks, that is exactly what I wanted to achieve. What is the
performance implication of 'only' in this context? Will it copy
all arguments?
Yes, it will, but just from the stack to a different location on
stack.
On Friday, 16 October 2015 at 09:01:57 UTC, yawniek wrote:
hi,
i'm reading in a stream of data that is deserialized into
individual frames.
a frame is either of:
a) a specific D datastructure ( struct with a few
ulong,string,string[string] etc members), known at compile time
b) json
On Friday, 16 October 2015 at 10:45:52 UTC, Chris wrote:
Later you call the function with the Lua C API like
"lua_pcall(L, 0, 1, 0);". It's a bit tricky to move things
around on the Lua stack, but you'll get there! ;)
Or you could use LuaD which doesn't require you to mess around
with the
On Saturday, 17 October 2015 at 02:03:01 UTC, Shriramana Sharma
wrote:
Ali Çehreli wrote:
http://ddili.org/ders/d.en/const_and_immutable.html#ix_const_and_immutable.parameter,
%20const%20vs.%20immutable
Hi Ali – I take this chance to personally thank you sincerely
for your book which
On Thursday, 10 September 2015 at 18:01:10 UTC, Russel Winder
wrote:
Is there an easy way of knowing when you do not have to
initialize the D runtime system to call D code from, in this
case, Python via a C adapter?
I naïvely transformed some C++ to D, without consideration of D
runtime
On Sunday, 13 September 2015 at 10:10:32 UTC, Jakob Ovrum wrote:
On Thursday, 10 September 2015 at 18:01:10 UTC, Russel Winder
wrote:
Is there an easy way of knowing when you do not have to
initialize the D runtime system to call D code from, in this
case, Python via a C adapter?
I naïvely
On Friday, 11 September 2015 at 13:09:33 UTC, Laeeth Isharc wrote:
obviously it's trivial to do with a little aa cache. and I
know I can memoize a function, and turn the memoized version
into an infinite range. but suppose I have a lazy function
that returns a finite range, and its expensive
On Friday, 18 September 2015 at 13:18:23 UTC, Jacob Carlborg
wrote:
On 2015-09-16 12:36, Marc Schütz wrote:
Wouldn't the following behaviour be more useful as a default?
abstract class Foo {
void bar1() { } // non-abstract, obviously
void bar2();// abstract,
On Saturday, 5 December 2015 at 16:28:18 UTC, Chris Wright wrote:
The default constructor doesn't set default field values,
though, which is why my solution involved copying
ClassInfo.init.
Thanks, this is a handy factoid. Reminds me of the whole __dtor
vs __xdtor debacle.
On Thursday, 3 December 2015 at 21:04:00 UTC, Nordlöw wrote:
Given
class C
{
// lots of members
}
and a function
f(C c)
{
}
is there a generic way, perhaps through reflection, to reset
(inside f) all members of `c` to their default values?
Something along
On Thursday, 17 December 2015 at 03:40:02 UTC, Shriramana Sharma
wrote:
In my recent search for D's equivalent of isatty, I found out
that there is a core.sys.posix module only by rgrepping under
/usr/include/dmd. Why isn't there a documentation page
http://dlang.org/phobos/core_sys.html
On Thursday, 17 December 2015 at 04:05:30 UTC, Jeremy DeHaan
wrote:
http://dpaste.com/3FH3W13
Also, I would be wary of lazy initialization. We have bad
experiences with it for AAs and standard containers. A typical
example would be:
void foo(Wrapper w)
{
...
w.doTheThing();
...
On Thursday, 17 December 2015 at 04:05:30 UTC, Jeremy DeHaan
wrote:
Thanks. I guess what bugs me is that I always try to hide the
fact that the API is a wrapper around C stuff, ie, I want to
make people feel as though they're using idiomatic D. Doing
something like this makes it feel like less
On Thursday, 17 December 2015 at 06:04:14 UTC, Jeremy DeHaan
wrote:
And I guess what I was talking about before is that using a
factory method feels klunky to me. If the things I am wrapping
had been written in D they could use default initialization, so
it feels wrong to do otherwise. I also
On Thursday, 17 December 2015 at 04:23:30 UTC, Shriramana Sharma
wrote:
Jakob Ovrum wrote:
As with core.stdc, refer to the
documentation for the equivalent C header.
I only know of even core.stdc's existence since I've been
poking into the Phobos sources. At least the Phobos
documentation
On Thursday, 17 December 2015 at 04:05:57 UTC, Adam D. Ruppe
wrote:
On Thursday, 17 December 2015 at 03:59:27 UTC, Jakob Ovrum
wrote:
There are some terminal libraries on Github (like consoled)
but I have to say I think they're uninspiring in terms of
quality and presentation.
Can you be any
On Thursday, 17 December 2015 at 05:02:50 UTC, Shriramana Sharma
wrote:
http://dlang.org/phobos/std_getopt.html has a line in an
example saying exit(1);
Surely this works only if core.stdc.stdlib is imported? Should
the example be modified to show the import?
And is exit() the canonical way
On Thursday, 17 December 2015 at 03:31:37 UTC, Jeremy DeHaan
wrote:
Hi all. I'm interfacing to some C code which include an opaque
type and some C functions that create and work with a pointer
to that type. I want to wrap up everything in a struct, and the
only thing that seems to bug me is
On Wednesday, 16 December 2015 at 20:43:02 UTC, Jack Stouffer
wrote:
...
You can also use return type covariance:
class ReferenceBidirectionalRange(T) : ReferenceForwardRange!T
{
this(Range)(Range r) if (isInputRange!Range) { super(r); }
final override @property typeof(this) save() {
On Thursday, 17 December 2015 at 03:38:31 UTC, Shriramana Sharma
wrote:
Is there a canonical way to test in D whether stdout/stderr (or
in general, a std.stdio.File) refers to a terminal or not?
https://www.google.co.in/search?q=terminal=dlang.org/phobos turns
out nothing.
I knew of C's (or
On Thursday, 17 December 2015 at 07:33:36 UTC, Jacob Carlborg
wrote:
I agree with that, but why don't the runtime register a
function with "atexit" that cleans up everything?
I think it might be possible, but it doesn't sound trivial. In
particular, all threads and fibers managed by druntime
On Tuesday, 15 December 2015 at 00:22:37 UTC, tsbockman wrote:
I also found `SortedRange.equalRange`, but that sounds like it
has an unreasonable amount of (admittedly O(1)) overhead for
the (extremely common) case in which I am looking for only a
single element, not a range.
If your array
Is there a way to do balanced match with std.regex?
Example (from [1]):
test -> funcPow((3),2) * (9+1)
I want to match the funcPow((3),2) bit, regardless of the depth
of the expression in funcPow(*).
https://stackoverflow.com/questions/7898310/using-regex-to-balance-match-parenthesis
[1]
On Tuesday, 15 December 2015 at 00:31:45 UTC, Jakob Ovrum wrote:
For sorted arrays you won't find any other standard facility
for doing binary search, but the containers RedBlackTree and
BinaryHeap provide something related.
You could also get the upper bound (SortedRange.upperBound) and
On Tuesday, 15 December 2015 at 01:07:32 UTC, Chris Wright wrote:
I don't think so.
std.regex looks like it implements only a deterministic finite
automaton, whereas what you are looking for requires a
push-down automaton. It just so happens that a few popular
regex libraries implement PDAs
On Monday, 21 December 2015 at 06:00:45 UTC, Shriramana Sharma
wrote:
I suppose what you mean is, the onus of guaranteeing that
const(char)* refers to a null-terminated string is upon the
person calling the to! function? Yes I understand, and Phobos
documentation does say that using a pointer
On Monday, 21 December 2015 at 05:41:31 UTC, Shriramana Sharma
wrote:
Rikki Cattermole wrote:
string myCString = cast(string)ptr[0 .. strLen];
Thanks but does this require that one doesn't attempt to append
to the returned string using ~= or such? In which case it is
not safe, right?
On Monday, 21 December 2015 at 05:34:07 UTC, Shriramana Sharma
wrote:
Hello. I have the following code:
import std.stdio, std.conv;
extern(C) const(char) * textAttrN(const (char) * specString,
size_t n);
string textAttr(const(char)[] specString)
{
const(char) * ptr =
On Monday, 21 December 2015 at 02:03:14 UTC, Shriramana Sharma
wrote:
I'm trying to interface to a C function:
extern(C) const char * textAttrN(const char * specString,
size_t n);
and getting the error:
Error: function .textAttrN without 'this' cannot be const
Please advise as to what I'm
On Monday, 21 December 2015 at 05:39:32 UTC, Rikki Cattermole
wrote:
size_t strLen = ...;
char* ptr = ...;
string myCString = cast(string)ptr[0 .. strLen];
I can't remember if it will include the null terminator or not,
but if it does just decrease strLen by 1.
Strings from C libraries
On Monday, 21 December 2015 at 05:43:04 UTC, Rikki Cattermole
wrote:
On 21/12/15 6:41 PM, Shriramana Sharma wrote:
Rikki Cattermole wrote:
string myCString = cast(string)ptr[0 .. strLen];
Thanks but does this require that one doesn't attempt to
append to the
returned string using ~= or
On Tuesday, 22 December 2015 at 17:23:11 UTC, Andrew Chapman
wrote:
On Tuesday, 22 December 2015 at 17:18:16 UTC, cym13 wrote:
On Tuesday, 22 December 2015 at 17:15:27 UTC, Andrew Chapman
wrote:
Sorry if this is a silly question but is the to! method from
the conv library the most efficient
On Wednesday, 23 December 2015 at 11:21:32 UTC, Jakob Ovrum wrote:
Dynamic memory allocation is expensive. If the string is
short-lived, allocate it on the stack:
See also std.conv.toChars[1] for stringifying lazily/on-demand.
http://dlang.org/phobos/std_conv#toChars
On Saturday, 26 December 2015 at 05:31:59 UTC, Ur@nuz wrote:
On Friday, 25 December 2015 at 20:06:04 UTC, drug wrote:
25.12.2015 17:13, Ur@nuz пишет:
[...]
You can do following http://dpaste.dzfl.pl/41c57f89a5a0
The reason of compile error is your using a range as a
separator, change it
On Monday, 21 December 2015 at 08:35:22 UTC, Jonathan M Davis
wrote:
There's also fromStringz that Jakob suggests using elsewhere in
this thread, but that really just boils down to
return cString ? cString[0 .. strlen(cString)] : null;
So, using that over simply slicing is primarily for
On Wednesday, 23 December 2015 at 10:51:52 UTC, earthfront wrote:
I'm using hackerpilot's excellent textadept plugin + DCD, Dfmt,
and Dscanner.
Upon saving files, it produces suggestions, much like warnings
from the compiler.
One suggestion is to use selective imports in local scopes. OK,
On Saturday, 6 February 2016 at 06:29:56 UTC, cy wrote:
Let's say I have a socket, and a file, and I want to send the
contents of that file to the socket. What's the best way to do
that? Yes I'm aware that in Linux, you can use a combination of
a pipe and splice(2) to keep all buffers kernel
On Tuesday, 9 February 2016 at 12:46:59 UTC, Whirlpool wrote:
Hello,
When you are using a C function (from an external library) that
returns a pointer on char which is the beginning of a string (I
know that C does not have a string type, that they are just
arrays of chars ended by '\0'), is
On Tuesday, 9 February 2016 at 16:52:09 UTC, Gary Willoughby
wrote:
On Tuesday, 9 February 2016 at 12:50:27 UTC, Jakob Ovrum wrote:
writefln et al sensibly does *not* assume that a pointer to
char is a C string, for memory safety purposes.
Print the result of std.string.fromStringz[1]
On Monday, 8 February 2016 at 05:59:43 UTC, Enjoys Math wrote:
I have several class members:
Arc[4] arcs;
Arc[4] arcs_2;
and Id like to initialize them with the same function, so how
do I "pass them in" by reference?
void foo(ref Arc[4] arr)
{
…
}
The dimension can of course be
On Monday, 8 February 2016 at 06:01:24 UTC, Jakob Ovrum wrote:
On Monday, 8 February 2016 at 05:59:43 UTC, Enjoys Math wrote:
I have several class members:
Arc[4] arcs;
Arc[4] arcs_2;
and Id like to initialize them with the same function, so how
do I "pass them in" by reference?
void
On Wednesday, 20 January 2016 at 20:28:03 UTC, Jon D wrote:
This is passes the @safe constraint, but 'stdout.writeln()' and
'stderr.writeln()' do not. (My program uses stderr.)
stderr/stdout/stdin are __gshared and can't be referenced by
safe code. The module level version of writeln, etc.,
On Wednesday, 20 January 2016 at 19:55:45 UTC, H. S. Teoh wrote:
On Wed, Jan 20, 2016 at 07:25:43PM +, Dicebot via
Digitalmars-d-announce wrote:
`auto p = () @trusted { return } ();`
Huh, I thought Andrei was opposed to this idiom? Is it now
considered reserved for templates or something
On Wednesday, 20 January 2016 at 15:28:05 UTC, jmh530 wrote:
I like the description of @trusted and template inference.
Template inference, in particular, was not something that was
obvious to me when first reading about D. I'm not sure how
clear you make it that you can still mark templates
On Wednesday, 20 January 2016 at 14:04:53 UTC, Jakob Ovrum wrote:
snip
Thanks for all the feedback. I've pushed a revision with further
changes, most of it based on the feedback in this thread.
On Thursday, 21 January 2016 at 13:39:48 UTC, Dicebot wrote:
I'd suggest at the very least to add a comment before
"p.bar();" saying "Must not escape 'p' pointer or @safe-ty will
be compromised".
I thought about this case, but it relies on UFCS which is
controlled by the callee. The caller
On Thursday, 21 January 2016 at 13:52:57 UTC, Dicebot wrote:
Reasonable, but the UFCS call can result from some other
function defined in same module (Phobos modules are not small
at all). Even small unlikely violation can completely destroy
benefits of @safe so in my opinion one can't be
On Thursday, 21 January 2016 at 06:20:01 UTC, rsw0x wrote:
okay, I'll just use @safe here... and nothing else in third
party libraries/half of phobos is @safe friendly so I guess
I'll wrap it in @trusted oh fuck it
Yeah, using @trusted like that is counterproductive. Just use
@system or
On Tuesday, 26 January 2016 at 15:54:14 UTC, Voitech wrote:
How to handle this correctly?
Make BaseParser the value type of the AA. Parser!Foo and
Parser!Bar are subtypes of BaseParser.
Unlike Java, just `Parser` is not a type but a template. It must
be instantiated to create a type. Java
The article aims to explain how to use @safe, @system and
importantly, @trusted, including all the hairy details of
templates.
https://jakobovrum.github.io/d/2016/01/20/memory-safety.html
Any and all feedback appreciated.
Hello,
Here's a light-on-dark theme userstyle for the recent dlang.org
re-design:
https://gist.github.com/JakobOvrum/e00f97f30bba4b24b6bc
The front page looks like this:
https://i.imgur.com/zuwVu7r.png
The theme supports the front page, articles, language
specification, Phobos
On Monday, 14 March 2016 at 16:42:27 UTC, Russel Winder wrote:
Is this intended as a Stylist style option for the site?
Yeah, I just don't want to bother with authenticating on their
site right now. Feel free to submit it if you'd like to see it
there. I don't know how maintenance/updating
On Monday, 14 March 2016 at 13:25:02 UTC, Nordlöw wrote:
On Monday, 14 March 2016 at 12:00:24 UTC, Jakob Ovrum wrote:
Suggestions, forks, uploads to Stylish and so forth are all
welcome. The important part is that we have an alternative
that is nice on the eyes for us who use dark-coloured
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