On Saturday, 15 May 2021 at 14:31:08 UTC, Alain De Vos wrote:
Which parts in dlang don't you use and why?
There is one feature (actually a mix of features) I'd be happy
not to use, but it is not possible: I call it autoreals, because
it resembles somewhat the idea behind autodecoding - in
On Saturday, 15 May 2021 at 04:54:15 UTC, Chris Piker wrote:
As always, your advice is much appreciated
I'm usually piping the results through hexdump. ;-)
No, in earnest, I often would have liked to have better formatted
messages. The only thing I can say: Sometimes it helps to
increase
On Thursday, 13 May 2021 at 11:21:58 UTC, Alain De Vos wrote:
[...] how can I do an extensive search in the library to
functions when i know more or less their name , but don't know
their exact place as module or package.
An alternative to the official documentation is
On Thursday, 13 May 2021 at 03:03:37 UTC, Tim wrote:
```
unittest{
auto p = rotate2D([0.0, 10.0], PI_2);
assert(p == [-10.0, 0.0]);
}
```
I suggest
```
unittest
{
auto p = rotate2D([0.0, 10.0], PI_2);
assert(isClose(p[0], -10.0));
assert(isClose(p[1], 0.0, 0.0, 1e-6));
}
On Wednesday, 12 May 2021 at 18:37:55 UTC, NonNull wrote:
Some documents/books seem to be out of date. If an intuitive
person competent in several other programming languages and in
abstract reasoning wanted to take the fastest route to learn
pretty much the whole of D as it stands now, having
On Wednesday, 12 May 2021 at 09:52:52 UTC, Alain De Vos wrote:
As oppposed to what i expect code below prints nothing nothing
on the screen. What is wrong and how to fix it ?
```
import std.stdio;
import std.range:iota;
import std.algorithm:map;
bool mywriteln(int x){
writeln(x);
On Monday, 10 May 2021 at 10:00:11 UTC, Виталий Фадеев wrote:
Say, please,
how to remove own post from this forum ?
There's currently no way to remove or edit an existing post.
ok
In my opinion it is a violation of the GDPR, which gives you the
right to remove such posts. GDPR applies
On Friday, 30 April 2021 at 17:33:19 UTC, Alain De Vos wrote:
An active maintainer is a living person, with a first name a
last name and an email adress, who looks into issues and tries
to fix them.
Now go look to this page ...
https://code.dlang.org/
Feel free to elaborate ...
I don't
On Thursday, 29 April 2021 at 05:41:45 UTC, Imperatorn wrote:
Crystal has no installer for Windows
Is this a strength or a weakness? (SCNR)
I'm trying to understand, what virtual functions are. I found the
[specs](https://dlang.org/spec/function.html#virtual-functions),
but I can't make head or tail of it.
- What is a `vtbl[]`? Obviously a function pointer table. But
where to find this? The examples don't use it. Maybe something
On Friday, 9 April 2021 at 16:11:26 UTC, Oleg B wrote:
valid '1/1/1': 0001-Jan-01 00:00:00 <<< see here
[...]
Is space a special char for `formattedRead` and it simple stop
parse without throwing exception if not found space (that
represented in fmt string)?
Have `formattedRead` any other
On Wednesday, 7 April 2021 at 17:31:09 UTC, Paul Backus wrote:
It's not your fault--this is a pretty obscure feature, and it's
not documented very well. Even after you've found the correct
page in the documentation (the page for `formattedWrite` [1]),
you have to scroll down past multiple
On Friday, 2 April 2021 at 15:01:07 UTC, mw wrote:
BTW, shall I log a writeln() improvement bug ?
It's really confusing, e.g as debug print or logs.
In my opinion this isn't a bug. The nulls are actually printed:
```
$> rdmd test.d | hd
61 62 63 00 00 00 36 0a 68 65 61 64 2d 61 62
On Thursday, 1 April 2021 at 16:52:17 UTC, Nestor wrote:
I was hoping to beat my dear Python and get similar results to
Go, but that is not the case neither using rdmd nor running the
executable generated by dmd. I am getting values between
350-380 ms, and 81ms in Python.
Try using ldc2
On Friday, 24 January 2020 at 12:22:49 UTC, Dennis wrote:
You can pass the -X flag to dmd, which makes it generate a
.json file describing the compiled file.
Great, that's what I was looking for - although it's also good to
know the __traits approach!
Thanks!
I'd like to get a list of all items (public, package, private)
that are defined in a D file. Is there a simple way, to get them?
I'm trying to understand issue 17441 [1]. I reduced it (including
Phobos) to the following (and added some message to point out the
problem):
test.d:
---
alias parentOf(alias sym) = __traits(parent, sym);
template packageName(alias T)
{
pragma(msg, "IN: ", T.stringof);
static if
On Wednesday, 8 January 2020 at 19:55:57 UTC, H. S. Teoh wrote:
Use dmd -i should solve the problem.
Oh, thanks, now it works... (Have been using rdmd too long, so I
always forget about other modules to be included.)
As mentioned on the dustmite website [1] I copied the folder std
from Phobos in a separate folder and renamed it to mystd. The I
changed all occurences of std by mystd in all files.
That works most of the time, but sometimes I get hundreds of
linker errors I do not understand:
$> dmd -main
On Sunday, 22 December 2019 at 17:20:51 UTC, BoQsc wrote:
What kind of editor/IDE are you using and which one do you like
the most?
I'm using sed... - no, just joking. Actually I use jed (because I
did for 20 years now) with emacs keybindings in C mode, but I
cannot recommend it for D. There
On Wednesday, 18 December 2019 at 17:57:15 UTC, Steven
Schveighoffer wrote:
style checker has nothing to do with buildable code. It just
enforces the style follows the guidelines.
It also checks, that the public unittests can be used on it's
own. (Target publictests in the makefile. Didn't
I thought it's a fast fix, just adding some documentation and a
unittest. But when running the style checker I got into trouble.
A shortend version of the problem:
I added the following public unittest to writeUpToNextSpec in
std.format:
///
@safe unittest
{
import
On Saturday, 14 December 2019 at 09:33:13 UTC, Tobias Pankrath
wrote:
See: https://dlang.org/spec/lex.html#integerliteral
What I am aiming at: Is the spec wrong or am I misunderstanding
it and did this change recently?
You are right. The implementation does not do what the specs tell
here.
On Saturday, 14 December 2019 at 07:09:30 UTC, Tobias Pankrath
wrote:
void main()
{
auto x = 9223372036854775808; // long.max + 1
}
You need to tell, that this is an unsigned long literal, else the
compiler treats it as an int:
void main()
{
auto x = 9223372036854775808UL; //
Yeah, it worked (at least for %a):
static assert(format!"%.3a"(1.0f) == "0x1.000p+0");
On Thursday, 12 December 2019 at 19:39:16 UTC, Petar Kirov
[ZombineDev] wrote:
You can use a C-style pointer reinterpret cast like this:
uint test(float f) { return *cast(uint*) }
Make sure that source and destination types have the same size.
Hey, great! :-)
Is it possible to get to the bits of a float in CTFE? I tried the
following, but this doesn't work:
```
import std.stdio;
union FloatBits
{
float floatValue;
ulong ulongValue;
}
ulong test(float f)
{
FloatBits fb;
fb.floatValue = f;
return fb.ulongValue;
}
void main()
{
In std.typecons, in Tuple there are two opCmp functions, that are
almost identical; they only differ by one being const and the
other not:
int opCmp(R)(R rhs)
if (areCompatibleTuples!(typeof(this), R, "<"))
{
static foreach (i; 0 .. Types.length)
On Saturday, 16 November 2019 at 10:01:25 UTC, Avery Stupidman
wrote:
assert(angleDeg(sqrt(3.0)/2.0, 1.5) == 60.0); // Fails
On my computer the results are very close, that is:
import std.math: nextUp;
assert(nextUp(angleDeg(sqrt(3.0)/2.0, 1.5)) == 60.0); // OK
On Saturday, 16 November
On Wednesday, 13 November 2019 at 14:23:40 UTC, mipri wrote:
3. it's very clear what's a compile-time vs. a runtime
parameter to the template.
At least, if one understands the difference. I remember that I
was not aware of this, when I started learning D and was a lot
confused by the use of
While debugging phobos I came across some stuff I don't
understand. A small example:
void foo(void* p)
{
Object o = cast(Object) p;
ClassInfo oc = typeid(o);
}
class Bar
{
void some_func(int i) {}
void do_something(void delegate(int) d)
{
// is it possible to check
On Thursday, 31 October 2019 at 13:34:35 UTC, Tobias Pankrath
wrote:
I was confused at first by the trailing
if (!is(T == struct) && !is(T == interface) && !is(T == class)
&& !__traits(isStaticArray, T));
I understood your question different from what Dennis answered.
At least I was
On Tuesday, 29 October 2019 at 20:15:13 UTC, kinke wrote:
Note that there's at least one bugzilla for these float/double
math overloads already. For a start, one could simply wrap the
corresponding C functions.
I guess, that this issue:
https://issues.dlang.org/show_bug.cgi?id=20206 boils
On Saturday, 26 October 2019 at 17:54:44 UTC, Mitacha wrote:
sudo apt-get install libssl-dev
That's it. Thanks. :-)
I tried to build ddox documentation locally with the command (in
dlang.org):
make -j3 -f posix.mak apidocs-prerelease
After a while I get the message "Linking..." followed by a call
of dmd with lots of parameters, among them -L-lssl and
-L-lcrypto. This ends in:
/usr/bin/ld: cannot find
On Friday, 25 October 2019 at 14:51:33 UTC, Yui Hosaka wrote:
The outputs for your program are as follows: [...]
Thanks for the output. I added it to the bug report.
The internal representation of the value is correct in all
versions. While the result of the direct call of snprintf always
On Friday, 25 October 2019 at 06:40:19 UTC, lili wrote:
Hi:
What is the alias Min = xxx mean? why need defined a alias Min
in Min template?
```
template Min(alias pred, Args...)
if (Args.length > 0 && __traits(isTemplate, pred))
{
static if (Args.length == 1)
{
alias Min =
On Thursday, 24 October 2019 at 20:48:02 UTC, Yui Hosaka wrote:
Do you have any idea for this issue?
I added a bug report:
https://issues.dlang.org/show_bug.cgi?id=20320
Internally the conversation from the binary representation of the
value to the printed one is done by a call to a C
On Tuesday, 8 October 2019 at 20:37:03 UTC, dan wrote:
But i would like to be able to do this without knowing the
expansion of pi, or writing too much code, especially if
there's some d function like writeAllDigits or something
similar.
You can use the property .dig to get the number of
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