On Mon, Jun 22, 2020 at 08:51:49PM +, mw via Digitalmars-d-learn wrote:
[...]
> >auto line = range.front;
> >range.popFront; // pop immediately
[...]
This is dangerous, because it assumes .front is not invalidated by
.popFront. It will not work, for example, with byLine because
On Fri, Jun 19, 2020 at 06:48:18AM +, Simen Kjærås via Digitalmars-d-learn
wrote:
[...]
> There's an example of exactly this in std.parallelism:
> https://dlang.org/phobos/std_parallelism.html#.TaskPool.workerIndex
>
> In short:
>
> Item[] targetArray = ...; // already contains data
>
I have an array of input data that I'm looping over, and, based on some
condition, generate new items that are appended onto a target array
(which may already contain data). Since the creation of new items is
quite expensive, I'm thinking to parallelize it with parallel foreach.
To avoid data
On Wed, Jun 17, 2020 at 02:32:09PM +, Adam D. Ruppe via Digitalmars-d-learn
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?
Because, unlike a regular parser-driven
On Wed, Jun 17, 2020 at 11:50:27AM +, Per Nordlöw via Digitalmars-d-learn
wrote:
> Should a range-compliant aggregate type realizing a parser be encoded
> as a struct or class?
Preferably a struct IMO, but see below.
> In dmd `Lexer` and `Parser` are both classes.
Probably for historical
On Sat, Jun 13, 2020 at 09:02:21AM +, John Chapman via Digitalmars-d-learn
wrote:
[...]
> module test;
>
> import std.uni;
>
> enum Cheese { cheddar, edam }
>
> void test(Cheese cheese) {
> final switch (cheese) {
> case Cheese.cheddar: break;
> case Cheese.edam: break;
> }
> }
>
On Fri, Jun 12, 2020 at 12:11:44PM +, duck_tape via Digitalmars-d-learn
wrote:
> On Friday, 12 June 2020 at 12:02:19 UTC, duck_tape wrote:
> > For speedups with getting my hands dirty:
> > - Does writef and company flush on every line? I still haven't found
> > the source of this.
writef, et
On Thu, Jun 11, 2020 at 10:46:32AM +, Paul Backus via Digitalmars-d-learn
wrote:
> On Thursday, 11 June 2020 at 05:41:25 UTC, H. S. Teoh wrote:
> >
> > Ironically, just today I ran into this corner case where @property
> > actually became a solution to a real problem:
> >
> >
On Fri, Jun 12, 2020 at 09:29:06PM +, MoonlightSentinel via
Digitalmars-d-learn wrote:
> On Friday, 12 June 2020 at 18:18:25 UTC, Per Nordlöw wrote:
> > How do I most easily track down which unittest in which file that
> > causes the crash?
[...]
Compile your program with debugging symbols,
On Fri, Jun 12, 2020 at 03:32:48AM +, Jon Degenhardt via
Digitalmars-d-learn wrote:
[...]
> I haven't spent much time on results presentation, I know it's not
> that easy to read and interpret the results. Brief summary - On files
> with short lines buffering will result in dramatic
On Thu, Jun 11, 2020 at 11:02:21PM +, duck_tape via Digitalmars-d-learn
wrote:
[...]
> I will give that a shot! Also of interest, the profiler results on a
> full runthrough do show file writing and int parsing as the 2nd and
> 3rd most time consuming activities:
>
> ```
> Num
On Thu, Jun 11, 2020 at 10:41:12PM +, duck_tape via Digitalmars-d-learn
wrote:
> On Thursday, 11 June 2020 at 22:19:27 UTC, H. S. Teoh wrote:
> > To encourage inlining, you could make it an alias parameter instead
> > of a delegate, something like this:
> >
> > void overlap(alias
On Thu, Jun 11, 2020 at 04:13:34PM +, duck_tape via Digitalmars-d-learn
wrote:
[...]
> Currently my D version is a few seconds slower than the Crystal
> version. putting it very solid in third place overall. I'm not really
> sure where it's falling behind crystal since `-release` removes
On Wed, Jun 10, 2020 at 10:58:57PM -0600, Jonathan M Davis via
Digitalmars-d-learn wrote:
[...]
> As things stand, @property has no real practical purpose but
> frequently gets used to indicate that it's the intention of a
> function's author for it to be used as if it were a variable. I
>
On Wed, Jun 10, 2020 at 10:50:17PM +, Paul Backus via Digitalmars-d-learn
wrote:
> On Wednesday, 10 June 2020 at 21:41:54 UTC, H. S. Teoh wrote:
> > There are a few places where it's needed (like satisfying the range
> > API, which implicitly checks for it)
>
> That may have been true at one
On Wed, Jun 10, 2020 at 08:24:19PM +, Vinod K Chandran via
Digitalmars-d-learn wrote:
> Hi all,
> I read in an old thread that authors of D wants to eliminate
> @property. I just roughly read the big thread bu couldn't find a
> conclusion. After all that thread is a 48 page longer jumbo
On Tue, Jun 09, 2020 at 05:03:55PM -0700, H. S. Teoh via Digitalmars-d-learn
wrote:
> On Tue, Jun 09, 2020 at 11:53:16PM +, Q. Schroll via Digitalmars-d-learn
> wrote:
> > Is there any particular reason why std.range : enumerate is a thing
> > and
> >
>
On Tue, Jun 09, 2020 at 11:53:16PM +, Q. Schroll via Digitalmars-d-learn
wrote:
> Is there any particular reason why std.range : enumerate is a thing
> and
>
> foreach (i, e; range) { ... }
>
> doesn't work from the get-go?
[...]
std.range.indexed is your friend. ;-)
T
--
Let's eat
On Fri, Jun 05, 2020 at 08:25:13AM +, aberba via Digitalmars-d-learn wrote:
> On Wednesday, 3 June 2020 at 17:02:35 UTC, H. S. Teoh wrote:
> > On Wed, Jun 03, 2020 at 09:36:52AM +, drathier via
> > Digitalmars-d-learn wrote:
> > > I'm wondering if there's a place that lists things which
On Thu, Jun 04, 2020 at 06:09:35PM +, mw via Digitalmars-d-learn wrote:
[...]
> --
> class Person : NameI, AddrI {
> mixin NameT!Person rename equals as name_equals;
> mixin AddrT!Person rename equals as addr_equals;
>
>
On Wed, Jun 03, 2020 at 08:43:43PM +, BoQsc via Digitalmars-d-learn wrote:
> On Wednesday, 3 June 2020 at 20:05:52 UTC, ttk wrote:
[...]
> > That works, but consider using chomp() instead.
> >
> > https://dlang.org/phobos/std_string.html#.chomp
>
> Chomp sounds kind of funny hahaha.
> Who
On Wed, Jun 03, 2020 at 09:36:52AM +, drathier via Digitalmars-d-learn
wrote:
> I'm wondering if there's a place that lists things which are
> slower/faster to compile? DMD is pretty famed for compiling quickly,
> but I'm not seeing particularly high speed at all, and I want to fix
> that.
On Mon, Jun 01, 2020 at 03:27:11PM +, Basile B. via Digitalmars-d-learn
wrote:
[...]
> Possibly a backend bug (keyword "wrong code"), caused by either of [1] or
> [2]
>
> [1] https://github.com/dlang/dmd/pull/9357
> [2] https://github.com/dlang/dmd/pull/9623/files
Yeah, it looks like a
On Mon, Jun 01, 2020 at 01:53:09PM +, Bastiaan Veelo via
Digitalmars-d-learn wrote:
> On Monday, 1 June 2020 at 09:42:44 UTC, Boris Carvajal wrote:
> > On Monday, 1 June 2020 at 06:35:36 UTC, MaoKo wrote:
> > > Hello, I don't understand why this code segfault on
> >
> > Reduced to:
> >
> >
On Sun, May 24, 2020 at 09:34:53PM +, jmh530 via Digitalmars-d-learn wrote:
> The following code results in the static assert in the constructor
> being triggered, even though I would have thought no constructor would
> have been called. I know that there is an easy fix for this (move the
>
On Fri, May 22, 2020 at 09:39:16PM +, Vinod K Chandran via
Digitalmars-d-learn wrote:
[...]
> So in the same manner, i want
> void function(Base) = fnPtr wiil work with
> void function(Child)
You cannot, because that's type unsafe:
class Base {}
class Derived : Base {
On Fri, May 22, 2020 at 08:55:45PM +, Vinod K Chandran via
Digitalmars-d-learn wrote:
> On Friday, 22 May 2020 at 20:06:20 UTC, Adam D. Ruppe wrote:
> > On Friday, 22 May 2020 at 20:04:24 UTC, Vinod K Chandran wrote:
> > > sampleList.Add(New Child(10.5)) Is this possible in D without
> > >
On Fri, May 22, 2020 at 08:25:24PM +, bauss via Digitalmars-d-learn wrote:
> Is there anyway to use the "to" template from std.conv but as nothrow?
[...]
There's std.conv.parse, though the interface is somewhat awkward, and it
only works with character ranges.
T
--
I'm still trying to
On Fri, May 15, 2020 at 06:44:52PM +, surlymoor via Digitalmars-d-learn
wrote:
[...]
> I don't often miss JS, but one particular feature that I enjoyed is
> the ability to expand arrays into argument lists using a unary
> operator.
>
> Example: add(...[1, 1]) === add(1, 1) // IIRC
>
> I've
On Wed, May 13, 2020 at 12:26:21PM +, realhet via Digitalmars-d-learn wrote:
> Hello,
>
> Is there a way to the following thing in a class instead of a struct?
>
> --
> static struct Point
> {
> int x, y;
>
> void toString(W)(ref W writer, scope
On Wed, May 13, 2020 at 01:52:13PM +, Andrey via Digitalmars-d-learn wrote:
> Hi,
> I want to sum lengths of all strings in array:
> > auto data = ["qwerty", "az", ""];
data.map!(s => s.length).sum;
T
--
It only takes one twig to burn down a forest.
On Thu, May 07, 2020 at 05:34:21PM +0200, ag0aep6g via Digitalmars-d-learn
wrote:
[...]
> Compared with LDC and GDC, DMD has a poor optimizer,
[...]
DMD's optimizer is the whipping boy around here, but to be fair, it is
poor only when it comes to aggrssive inlining and optimizing loops.
Other
On Thu, May 07, 2020 at 03:00:18PM +, jmh530 via Digitalmars-d-learn wrote:
> I am curious how ctfe and static ifs interact.
Then you should find this article helpful:
https://wiki.dlang.org/User:Quickfur/Compile-time_vs._compile-time
> In particular, if an enum bool passed as a
On Wed, May 06, 2020 at 09:59:48AM +, welkam via Digitalmars-d-learn wrote:
> 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
On Tue, May 05, 2020 at 01:44:18PM +, WebFreak001 via Digitalmars-d-learn
wrote:
> I was dumping the full PI value on my machine with the highest
> precision it could get and got:
>
> $ rdmd --eval='printf("%.70llf\n", PI)'
>
On Mon, May 04, 2020 at 09:33:27AM -0700, Ali Çehreli via Digitalmars-d-learn
wrote:
[...]
> Now it's news to me that 'new' does not allocate on the heap when
> 'scope' is used. I'm not sure I'm comfortable with it but that's true.
> Is this unique? Otherwise, 'new' always allocates on the heap,
On Sun, May 03, 2020 at 02:53:21PM +, Baby Beaker via Digitalmars-d-learn
wrote:
> How can I assign a variable in “if” condition in Dlang?
if (auto obj = someFunction(...)) {
// use obj here, it's guaranteed to be
// true/non-null/etc.
}
T
On Sat, May 02, 2020 at 02:22:42AM +, dan via Digitalmars-d-learn wrote:
> I'm looking for a function something like writeln or write, but instead of
> writing to stdout, it writes to a string and returns the string.
[...]
import std.format : format;
string str = format("%s %s
On Fri, May 01, 2020 at 06:37:41PM +, tsbockman via Digitalmars-d-learn
wrote:
> On Friday, 1 May 2020 at 18:07:54 UTC, H. S. Teoh wrote:
[...]
> > Actually, if you're willing to ship a working copy of dmd with your
> > program, you *could* compile D code on-the-fly and dynamically load
> >
On Fri, May 01, 2020 at 05:44:27PM +, tsbockman via Digitalmars-d-learn
wrote:
> On Friday, 1 May 2020 at 15:42:54 UTC, Baby Beaker wrote:
> > There is a Python eval() equivalent in Dlang working in Runtime?
>
> No, and there almost certainly never will be due to fundamental
> differences
On Thu, Apr 30, 2020 at 06:05:55PM +, Paul Backus via Digitalmars-d-learn
wrote:
[...]
> Doing work in popFront instead of front is usually an anti-pattern,
> since it forces eager evaluation of the next element even when that
> element is never used. You should only do this if there's no
>
On Tue, Apr 28, 2020 at 08:30:27PM +, Harry Gillanders via
Digitalmars-d-learn wrote:
> The spec doesn't seem to explicitly mention what happens when the left
> operand of a shift expression is signed and negative. [1]
> But I know that D follows C's semantics for this sort of stuff, and
>
On Mon, Apr 27, 2020 at 05:19:35PM +, jmh530 via Digitalmars-d-learn wrote:
> When using a template with multiple functions within it, is it
> possible to access the underlying functions directly?
Yes, but only if the template is not eponymous.
> Not sure I am missing anything, but what
On Fri, Apr 17, 2020 at 05:33:23PM +, Simen Kjærås via Digitalmars-d-learn
wrote:
> On Friday, 17 April 2020 at 16:54:42 UTC, Adam D. Ruppe wrote:
[...]
> > So pragma(msg) is doing something really weird, the bug doesn't
> > appear to be in Phobos per se, I think it is the compiler doing the
On Wed, Apr 15, 2020 at 09:46:58PM +, p.shkadzko via Digitalmars-d-learn
wrote:
> I am quite confused by the following exception during dub build:
>
> > dub build --single demo.d --compiler=ldc2 --force
> Performing "debug" build using ldc2 for x86_64.
> demo ~master: building configuration
On Wed, Apr 15, 2020 at 12:01:51AM +, Adam D. Ruppe via Digitalmars-d-learn
wrote:
[...]
> is() is a bit weird, but I described it in my "D Cookbook" to some
> success... and writing that description helped me make sense of it.
> The docs list like seven forms of it, but they are mostly just
On Wed, Apr 08, 2020 at 08:16:27PM +, Quantium via Digitalmars-d-learn
wrote:
> On Wednesday, 8 April 2020 at 16:25:01 UTC, Net wrote:
[...]
> > As far I know, you can't access other's program memory in any modern
> > operating system. That's managed and protected by the OS through
> >
On Tue, Apr 07, 2020 at 03:06:16PM +, Adam D. Ruppe via Digitalmars-d-learn
wrote:
> On Tuesday, 7 April 2020 at 14:51:15 UTC, H. S. Teoh wrote:
> > 1) Follow LDC wiki to build an Android cross-compiler and
> >cross-compiled LDC libraries (this may already be prepackaged
> >with the
On Tue, Apr 07, 2020 at 12:43:20PM +, Adam D. Ruppe via Digitalmars-d-learn
wrote:
> On Monday, 6 April 2020 at 08:38:03 UTC, Jan Hönig wrote:
> > Is there some "Hello World!" example for D on Android?
[...]
> > However there is just so much to know.
> > It is really overwhelming.
>
> no
On Mon, Mar 16, 2020 at 01:09:08PM +, Adnan via Digitalmars-d-learn wrote:
[...]
> Would it be wasteful to cast the entire content into a const string?
Why would it be? It's just reinterpreting a pointer.
> Can a memory mapped file be read with a buffer?
That totally defeats the purpose
On Sat, Mar 14, 2020 at 10:37:37PM +, Adnan via Digitalmars-d-learn wrote:
> https://dlang.org/library/std/mmfile/mm_file.html doesn't seem to
> specify anything similar to lines() or byLine() or byLineCopy() etc.
That's because a memory-mapped file appears directly in your program's
memory
On Fri, Mar 13, 2020 at 04:31:16PM -0400, Steven Schveighoffer via
Digitalmars-d-learn wrote:
[...]
> I would expect that something could be written to turn a signature
> string into a mangling and also provide the correct type upon return.
> Something like:
>
> auto f = getFunction!(@safe void
On Fri, Mar 13, 2020 at 08:22:53PM +, wjoe via Digitalmars-d-learn wrote:
[...]
> So from what I understand, because, at least on Posix, since there's
> only a symbol name there's nothing I can do in my loader to verify
> that a function is or does what it claim to be/do.
[...]
As far as I
On Fri, Mar 13, 2020 at 06:11:01PM +, wjoe via Digitalmars-d-learn wrote:
> On Friday, 13 March 2020 at 17:05:32 UTC, Mike Parker wrote:
> > On Friday, 13 March 2020 at 16:11:53 UTC, wjoe wrote:
> > > On Friday, 13 March 2020 at 16:04:06 UTC, Mike Parker wrote:
[...]
> > > >
On Fri, Mar 13, 2020 at 09:30:16AM -0400, Steven Schveighoffer via
Digitalmars-d-learn wrote:
> On 3/13/20 5:24 AM, H. S. Teoh wrote:
> > Note that `arg ~ arg` may allocate, but it also may not if the
> > current buffer for `arg` is big enough to accomodate both.
>
> That always allocates. Only
On Fri, Mar 13, 2020 at 03:40:11AM +, Adnan via Digitalmars-d-learn wrote:
> In my machine the following D code compiled with release flag and LDC
> performs over 230ms while the similar Go code performs under 120ms.
>
> string smallestRepr(const string arg) {
> import std.format :
On Thu, Mar 12, 2020 at 08:51:24AM +, mark via Digitalmars-d-learn wrote:
[...]
> YYY: The range() method is clearly not good D style but I don't know
> how to support foreach (item; aaset) ...
The usual idiom is to overload .opSlice, then you can do:
foreach (item; aaset[]) { ... }
On Mon, Mar 02, 2020 at 07:51:34PM -0500, Steven Schveighoffer via
Digitalmars-d-learn wrote:
[...]
> On 3/2/20 6:46 PM, H. S. Teoh wrote:
> > To prevent the optimizer from eliding "useless" code, you need to do
> > something with the return value that isn't trivial (assigning to a
> > variable
On Mon, Mar 02, 2020 at 06:27:22PM -0500, Steven Schveighoffer via
Digitalmars-d-learn wrote:
[...]
> Yeah, this looked very fishy to me. ldc can do some nasty "helpful"
> things to save you time! When I posted my results, I was using DMD.
>
> I used run.dlang.io with ldc, and verified I get the
On Wed, Feb 26, 2020 at 12:50:35AM +, Basile B. via Digitalmars-d-learn
wrote:
[...]
> #!dmd -boundscheck=off -O -release -inline
[...]
TBH, I'm skeptical of any performance results using dmd. I wouldn't pay
attention to performance numbers obtained this way, and rather look at
the
On Tue, Feb 25, 2020 at 10:26:48PM +, Marcel via Digitalmars-d-learn wrote:
[...]
> I can't give you the actual error messages right now, but both
> libraries have packages that define modules with the same name. For
> example, both libraries have packages with a module called
> "utility.d".
On Mon, Feb 24, 2020 at 07:50:23PM +, JN via Digitalmars-d-learn wrote:
> import std.range;
> import std.stdio;
>
> alias NumberPrinter = void delegate();
>
> NumberPrinter[int] printers;
>
> void main()
> {
> foreach (i; iota(5))
> {
> printers[i] = () { write(i); };
>
On Thu, Feb 13, 2020 at 12:32:01PM -0500, Steven Schveighoffer via
Digitalmars-d-learn wrote:
[...]
> Some syntax like expr(someTuple)... would be really cool to have in D.
>
> Or something like arg => expr syntax for templates might be useful:
>
> f(staticMap!(!a => foo(a), args)); // look ma,
On Wed, Feb 12, 2020 at 09:05:22PM +, user1234 via Digitalmars-d-learn
wrote:
> On Wednesday, 12 February 2020 at 20:58:49 UTC, Marcel wrote:
> > Hello!
> > I have two questions:
> >
> > 1- How can I concatenate two type sequences?
>
> alias Concatenated = AliasSeq!(TList1, TList2);
[...]
On Fri, Feb 07, 2020 at 07:37:08PM +, mark via Digitalmars-d-learn wrote:
> I am porting code from other languages to D as part of learning D, and
> I find I've used sets quite a lot. AFAIK D doesn't have a built-in set
> type or one in the std. lib.
>
> However, I've been perfectly
On Sun, Feb 02, 2020 at 03:16:46AM +, Saurabh Das via Digitalmars-d-learn
wrote:
> On Saturday, 1 February 2020 at 20:37:03 UTC, H. S. Teoh wrote:
[...]
> > I've actually done this before in an equation grapher program: the
> > user inputs an equation, the program generates D code to compute
On Sat, Feb 01, 2020 at 08:01:34PM +, Andre Pany via Digitalmars-d-learn
wrote:
[...]
> Another approach:
> - include the dmd compiler package with your application
> - within your app call the compiler executable and compile the source
> code to a dll / so
> - call the dll / so function
On Thu, Jan 30, 2020 at 09:37:40AM +, Michael via Digitalmars-d-learn wrote:
[...]
> auto elements = buf.to!string.strip.split(" ").filter!(a => a != "");
>
> That line strips white space from buf, splits it, removes empty
> elements and returns an array of strings. At least I thought so.
If
On Thu, Jan 30, 2020 at 06:20:47PM +, uranuz via Digitalmars-d-learn wrote:
[...]
> 1. Why API for __traits(getOverloads) is so strange. Why I need to
> find parent for symbol myself and pass actual symbol name as string,
> but not actually pass a symbol itself? It is very strange to me...
On Mon, Jan 27, 2020 at 10:13:47PM +, Herbert via Digitalmars-d-learn wrote:
> On Monday, 27 January 2020 at 21:51:35 UTC, Adam D. Ruppe wrote:
> > On Monday, 27 January 2020 at 21:21:55 UTC, Herbert wrote:
> > > My project does not allow dynamic memory. So I can't use
> > > delegates.
> >
>
On Mon, Jan 27, 2020 at 09:15:58PM +, Herbert via Digitalmars-d-learn wrote:
[...]
> How can I have a function parameter with this type (DiceValue)?
Just take an integer type and add a contract that enforces range. For
example:
auto myFunc(int diceValue)
in (diceValue
On Fri, Jan 24, 2020 at 08:26:50PM +0100, Jacob Carlborg via
Digitalmars-d-learn wrote:
> On 2020-01-24 19:43, H. S. Teoh wrote:
>
> > (enums cannot take AA's or class objects as values, also, once
> > assigned they are immutable).
>
> AA enums work.
Ah you're right, it's
On Fri, Jan 24, 2020 at 04:21:48PM +, Jan Hönig via Digitalmars-d-learn
wrote:
> I am looking for a detailed explanation or showcase regarding CTFE and
> string mixins.
> I want to play with D a little bit regarding code generation.
> I would like to have a pseudo-AST, consisting of a few
On Thu, Jan 23, 2020 at 03:44:10PM +, Adam D. Ruppe via Digitalmars-d-learn
wrote:
[...]
> Or delete all that wordpress junk and make something in D :P
+1. ;-)
T
--
The fact that anyone still uses AOL shows that even the presence of options
doesn't stop some people from picking the
On Tue, Jan 21, 2020 at 04:51:35PM -0500, Steven Schveighoffer via
Digitalmars-d-learn wrote:
[...]
> It would be really cool to make AA's at CTFE change into runtime AAs
> when used at runtime, and be accessible as compile-time AAs otherwise.
[...]
I've been wishing for this since the early
On Fri, Jan 17, 2020 at 04:12:18PM -0800, Ali Çehreli via Digitalmars-d-learn
wrote:
> On 1/17/20 3:04 PM, Petar Kirov [ZombineDev] wrote:> On Friday, 17 January
> 2020 at 21:40:05 UTC, JN wrote:
>
> > I think the problem comes from the way you compile and link your
> > code. I you compile both
On Thu, Jan 16, 2020 at 05:03:33PM +, mark via Digitalmars-d-learn wrote:
[...]
> auto wordCharCounts4 = words // I added this and it won't compile
> .map!(a => a.count); // Error: no property count for type string
> writeln(wordCharCounts4);
You need to import std.algorithm to
On Wed, Jan 15, 2020 at 07:50:31PM +, mark via Digitalmars-d-learn wrote:
[...]
> Why did you use string.count rather than string.length?
The .length of a `string` type is the number of bytes that it occupies,
which is not necessarily the same thing as the number of characters in
the string.
On Mon, Jan 13, 2020 at 12:58:57PM -0500, Steven Schveighoffer via
Digitalmars-d-learn wrote:
> On 1/13/20 12:47 PM, H. S. Teoh wrote:
> >
> > Why not write your own convenience wrapper?
> >
> > auto firstElement(R)(R r)
> > if (isInputRange!R)
> > {
> > if
On Mon, Jan 13, 2020 at 12:39:30PM -0500, Steven Schveighoffer via
Digitalmars-d-learn wrote:
> I have a range (array), I want to find an element and get it from that
> array.
>
> The code I'm writing looks like this:
>
> auto answer = arr.find!((item,x) => item.id == x)(id);
>
On Mon, Jan 13, 2020 at 04:23:19AM -0800, Ali Çehreli via Digitalmars-d-learn
wrote:
> On 1/13/20 2:28 AM, mark wrote:
> > I'm just starting out learning D.
> >
> > Andrei Alexandrescu's "The D Programming Language" is 10 years old,
> > so is it still worth getting? (I don't know how much D has
On Wed, Jan 08, 2020 at 09:42:03PM +, Ferhat Kurtulmuş via
Digitalmars-d-learn wrote:
[...]
> What is going on here? The original post date appears as to be of 2005
> :D.
[...]
Haha yeah, I'm not sure why Stefan replied to a post dating from 2005.
T
--
Just because you can, doesn't mean
On Mon, Jan 06, 2020 at 10:27:09AM +, berni44 via Digitalmars-d-learn wrote:
> 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
On Wed, Jan 08, 2020 at 09:13:18AM +, Chris Katko via Digitalmars-d-learn
wrote:
> On Wednesday, 8 January 2020 at 06:51:57 UTC, H. S. Teoh wrote:
[...]
> > Generally, the recommendation is to separately compile each package.
[...]
> What's the downsides / difficulties / "hoops to jump
On Wed, Jan 08, 2020 at 06:56:20PM +, Guillaume Lathoud via
Digitalmars-d-learn wrote:
> Thanks to all for the answers.
>
> The package direction is precisely what I am trying to avoid. It is
> still not obvious to me how much work (how many trials) would be
> needed to decide on
On Wed, Jan 08, 2020 at 06:12:01PM +, Stefan via Digitalmars-d-learn wrote:
[...]
> But you can easily do the initialization in your D code, by calling
> rt_init() and rt_term(), like this:
[...]
> extern(C) int rt_init();
> extern(C) int rt_term();
> extern(C) __gshared bool rt_initialized =
On Wed, Jan 08, 2020 at 06:06:33AM -0700, Jonathan M Davis via
Digitalmars-d-learn wrote:
> On Wednesday, January 8, 2020 4:54:06 AM MST Simen Kjærås via Digitalmars-d-
> learn wrote:
[...]
> > struct S {
> > @disable this();
> > @disable static S init();
> > }
> >
> > This will give
On Wed, Jan 08, 2020 at 09:09:23AM +0100, Robert M. Münch via
Digitalmars-d-learn wrote:
> On 2020-01-07 19:06:09 +, H. S. Teoh said:
>
> > It's up to you how to implement all of this, of course. The language
> > itself doesn't ship a built-in type that implements this, but it
> > does
On Wed, Jan 08, 2020 at 04:40:02AM +, Guillaume Lathoud via
Digitalmars-d-learn wrote:
> Hello,
>
> One of my D applications grew from a simple main and a few source
> files to more than 200 files. Although I minimized usage of
> templating and CTFE, the compiling time is now about a minute.
On Tue, Jan 07, 2020 at 06:38:59PM +0100, Robert M. Münch via
Digitalmars-d-learn wrote:
> I read all the docs but I'm not toally sure. Is it that [x][y] is a 2D
> array-index, where as [x,y] is a slice?
arr[x][y] is indexing an array of arrays.
arr[x,y] is indexing an actual multi-dimensional
On Sat, Jan 04, 2020 at 08:19:14PM +0100, Robert M. Münch via
Digitalmars-d-learn wrote:
> On 2019-12-31 21:36:56 +, Steven Schveighoffer said:
>
> > The fact that a Grapheme's return requires you keep the grapheme in
> > scope for operations seems completely incorrect and dangerous IMO
> >
On Sat, Jan 04, 2020 at 12:51:15AM +, Chris Katko via Digitalmars-d-learn
wrote:
[...]
> I'm looking through D's parallelism module and the docs state,
> up-front:
>
> >Creates a Task on the GC heap that calls an alias.
>
> The modern, scalable way to make a parallel game engine uses
On Tue, Dec 31, 2019 at 04:36:56PM -0500, Steven Schveighoffer via
Digitalmars-d-learn wrote:
> On 12/31/19 4:22 PM, H. S. Teoh wrote:
[...]
> > import std;
> > void main() {
> > auto x = "Bla\u0301hbla\u0310h\u0309!";
> > auto r = x.byGrapheme;
> >
On Tue, Dec 31, 2019 at 04:02:47PM -0500, Steven Schveighoffer via
Digitalmars-d-learn wrote:
> On 12/31/19 2:58 PM, H. S. Teoh wrote:
> > On Tue, Dec 31, 2019 at 09:33:14AM -0500, Steven Schveighoffer via
> > Digitalmars-d-learn wrote:
> > > e.g.:
> > >
> > > writeln(" Text = ", gr1.map!((ref
On Tue, Dec 31, 2019 at 09:33:14AM -0500, Steven Schveighoffer via
Digitalmars-d-learn wrote:
> On 12/30/19 6:31 PM, H. S. Teoh wrote:
> > On Mon, Dec 30, 2019 at 03:09:58PM -0800, H. S. Teoh via
> > Digitalmars-d-learn wrote:
[...]
> > Haha, it's actually right there
On Tue, Dec 31, 2019 at 09:41:49AM -0500, Steven Schveighoffer via
Digitalmars-d-learn wrote:
> On 12/30/19 6:15 PM, JN wrote:
> > On Sunday, 29 December 2019 at 08:31:13 UTC, mipri wrote:
> > >
> > > int i = a.countUntil!(v => v == 55);
> > > assert(i == 2);
> >
> > I also had to ask because I
On Mon, Dec 30, 2019 at 03:31:31PM -0800, H. S. Teoh via Digitalmars-d-learn
wrote:
> On Mon, Dec 30, 2019 at 03:09:58PM -0800, H. S. Teoh via Digitalmars-d-learn
> wrote:
> [...]
> > I suspect the cause is that whatever Grapheme.opSlice returns is
> > going out-of-scop
On Mon, Dec 30, 2019 at 03:09:58PM -0800, H. S. Teoh via Digitalmars-d-learn
wrote:
[...]
> I suspect the cause is that whatever Grapheme.opSlice returns is going
> out-of-scope when used with .map, that's why it's malfunctioning.
[...]
Haha, it's actually right there in the Graphem
On Sun, Dec 29, 2019 at 01:19:09PM +0100, Robert M. Münch via
Digitalmars-d-learn wrote:
> On 2019-12-27 19:44:59 +, H. S. Teoh said:
[...]
> > If you want to add/delete/change graphemes, what you *really* want
> > is to use an array of Graphemes:
> >
> > Grapheme[] editableGraphs;
> >
On Mon, Dec 30, 2019 at 06:18:49PM +, uranuz via Digitalmars-d-learn wrote:
[...]
> void getCompiledTemplate(HTTPContext ctx)
> {
> import std.exception: enforce;
> enforce(ctx, `ctx is null`);
> enforce(ctx.request, `ctx.request is null`);
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