On Friday, 10 May 2024 at 00:18:16 UTC, Andy Valencia wrote:
tst7.d(6): Error: cannot implicitly convert expression `e in
this.members` of type `bool*` to `bool`
tst7.d(15): Error: template instance `tst7.Foo!uint` error
instantiating
I'm getting this for this bit of source (trimmed from the
On Monday, 8 August 2022 at 12:02:02 UTC, Dom Disc wrote:
Hello.
I found in the documentation functions declared like this:
```D
pure @nogc @safe BigInt opAssign(T : BigInt)(T x);
```
This is a template function, even if T is constrained to always
be BigInt (it may also include anything that
On Monday, 1 August 2022 at 23:35:13 UTC, pascal111 wrote:
This is the definition of "filter" function, and I think it
called itself within its definition. I'm guessing how it works?
'''D
template filter(alias predicate)
if (is(typeof(unaryFun!predicate)))
{
/**
Params:
range =
On Sunday, 3 November 2019 at 16:55:36 UTC, Vinod K Chandran
wrote:
Hi all,
I can do this in C++. #include
using namespace std ;
#define end };
#define log(x) cout << x << endl
#define wait std::cin.get()
int main() {
log("Trying to avoid the visual clutter aused by closing
curly braces
On Tuesday, 3 December 2019 at 17:45:27 UTC, H. S. Teoh wrote:
The thing is, `void` means "no return type" (or "no type" in
some contexts), i.e., void == TBottom in that case.
Not *quite* correct. void is not a bottom type; it's a unit type,
meaning that it's a type with only 1 value (as is nu
On Tuesday, 3 December 2019 at 22:11:39 UTC, Meta wrote:
On Tuesday, 3 December 2019 at 17:45:27 UTC, H. S. Teoh wrote:
The thing is, `void` means "no return type" (or "no type" in
some contexts), i.e., void == TBottom in that case.
Not *quite* correct. void is not a bottom type; it's a unit
On Sunday, 8 December 2019 at 01:10:21 UTC, AA wrote:
I'd like to accept the return type of map. From some previous
questions that I should accept a template?
So for something like:
```
void mapAccepter(Range)(Range r)
{
import std.array : array;
import std.stdio : writeln;
auto co
On Wednesday, 11 December 2019 at 20:08:37 UTC, Meta wrote:
import std.algorithm;
import std.range;
void mapAccepter(E)(InputRange!E r)
{
import std.array: array;
import std.stdio: writeln;
auto collected = r.array;
writeln(collected);
}
void main()
{
int[] nums = [1, 2, 3]
On Wednesday, 25 December 2019 at 01:24:52 UTC, Adnan wrote:
Does the compiler automatically pass values by reference if
possible with `in` parameters in higher level of optimization
flags? I would normally use `in ref` but sometimes it's not
compatible with different types.
No. "in" is short
On Monday, 6 April 2020 at 21:23:22 UTC, Quantium wrote:
Are there any libraries to creade a simple discord bot using D?
And if you know these libraries, could you day me their pros
and cons?
I've used https://github.com/b1naryth1ef/dscord to build a
Discord bot, a little over a year ago. How
Unlike C/C++, char is not a numeric type in D; It's a UTF-8 code
point:
import std.traits;
void main()
{
pragma(msg, isNumeric!char); //Prints false
}
On Tuesday, 5 May 2020 at 17:11:53 UTC, learner wrote:
On Tuesday, 5 May 2020 at 16:41:06 UTC, Adam D. Ruppe wrote:
typeof(return)
Thank you, that was indeed easy!
Is it possible to retrieve also the caller return type?
Something like:
```
int foo() {
return magic();
}
auto magic(may
On Tuesday, 5 May 2020 at 18:19:00 UTC, Meta wrote:
mixin template magic()
{
alias CallerRet = typeof(return);
CallerRet magic()
{
return CallerRet.init;
}
}
Small edit: you can remove the "CallerRet" alias by doing the
following:
mixin template magic()
{
typeof(r
On Wednesday, 17 June 2020 at 11:50:27 UTC, Per Nordlöw wrote:
Should a range-compliant aggregate type realizing a parser be
encoded as a struct or class? In dmd `Lexer` and `Parser` are
both classes.
In general how should I reason about whether an aggregate type
should be encoded as a struct
On Tuesday, 23 June 2020 at 23:53:36 UTC, claptrap wrote:
So you have opBinary and half a dozen operators to implement.
Do you use a separate method for each operator or do you have
one method and a big static if else if to select code path?
I assume they are functionally equivalent? So its ju
class Human {
static immutable MAX_AGE = 122;
bool alive = true;
int age = 0;
//Error: mutable method onlineapp.Human.checkAge is not
callable using a const object
invariant(checkAge());
void growOlder()
in(alive)
out(; checkAge())
{
age++;
i
On Wednesday, 10 March 2021 at 04:57:19 UTC, Paul Backus wrote:
On Wednesday, 10 March 2021 at 03:39:15 UTC, Meta wrote:
class Human {
static immutable MAX_AGE = 122;
bool alive = true;
int age = 0;
//Error: mutable method onlineapp.Human.checkAge is not
callable using a const
On Saturday, 27 March 2021 at 20:44:12 UTC, Brad wrote:
I was looking through lots of sample code on Rosetta Code. D
has a lot of solutions out there. That is really nice but it
has me wondering - coming from other languages that do not
support the concept of immutability - do real world prog
On Wednesday, 7 April 2021 at 17:31:09 UTC, Paul Backus wrote:
On Wednesday, 7 April 2021 at 17:04:56 UTC, novice2 wrote:
On Wednesday, 7 April 2021 at 13:43:18 UTC, Paul Backus wrote:
So, you should change your code to
writefln("%-(%s, %)", s);
sorry i dont read docs so carefully
thanks
On Thursday, 8 April 2021 at 12:19:29 UTC, WebFreak001 wrote:
```d
string to01String(int[] x) @safe
{
auto conv = x.to!(ubyte[]); // allocates new array, so
later cast to string is OK
conv[] += '0'; // assume all numbers are 0-9, then this
gives the correct result
return (() @trus
On Thursday, 8 April 2021 at 18:01:56 UTC, Meta wrote:
On Thursday, 8 April 2021 at 12:19:29 UTC, WebFreak001 wrote:
```d
string to01String(int[] x) @safe
{
auto conv = x.to!(ubyte[]); // allocates new array, so
later cast to string is OK
conv[] += '0'; // assume all numbers are 0-9, t
On Thursday, 29 April 2021 at 16:02:20 UTC, novice2 wrote:
Hello.
I need use std.format.format() in nothrow function.
format() can throw.
For this case i have special default string.
I don't want embrace format into try..catch block,
and i found elegant std.exception.ifThrown.
But DMD say "ifThro
On Friday, 30 April 2021 at 13:05:00 UTC, Steven Schveighoffer
wrote:
On 4/29/21 1:50 PM, Meta wrote:
The reason for this, apparently, is in the definition of
`ifThrown`:
```
CommonType!(T1, T2) ifThrown(E : Throwable = Exception, T1,
T2)(lazy scope T1 expression, lazy scope T2 errorHandler
On Thursday, 29 April 2021 at 20:00:23 UTC, novice2 wrote:
i dont understand why (templates too dificult for me yet),
but if i comment "lazy" from T2,
then compiler allow add "nothrow" to "ifThrown"
```d
CommonType!(T1, T2) ifThrown(E : Throwable = Exception, T1,
T2)(lazy scope T1 expression, /
On Friday, 30 April 2021 at 13:42:49 UTC, Steven Schveighoffer
wrote:
On 4/30/21 9:24 AM, Meta wrote:
My point is that I think marking the *function* nothrow is not
correct, it's the second parameter that dictates the throwing
of the result.
And you can probably fix the second parameter to b
On Friday, 17 September 2021 at 10:31:34 UTC, bauss wrote:
On Thursday, 16 September 2021 at 20:53:34 UTC, Elmar wrote:
Hello D community.
I was browsing the `__traits` keywords and I found `isFuture`
whose descriptions says something about `@future`-annotated
variables.
[link](https://dlan
A trick i use often:
```D
import std;
void main()
{
import uni = std.uni;
writeln("Learning D is fun".split!(uni.isWhite));
}
```
Under-rated way of importing things, you don't bloat your scope
anymore
Is the source of 'run.dlang.io' available somewhere?
If the type is ``Color`` I think the compiler should allow
``GRAY`` if it is a member of ``Color``, isn't how strong
statically typed language should work? I wonder what is the
rational against it? How hard would it be to allow it?
On Tuesday, 1 March 2022 at 12:29:56 UTC, Steven Schveighoffer
wrote:
On 3/1/22 7:22 AM, meta wrote:
If the type is ``Color`` I think the compiler should allow
``GRAY`` if it is a member of ``Color``, isn't how strong
statically typed language should work? I wonder what is the
rational against
On Tuesday, 1 March 2022 at 15:37:55 UTC, Ali Çehreli wrote:
On 3/1/22 07:19, Mike Parker wrote:
> On Tuesday, 1 March 2022 at 13:15:09 UTC, meta wrote:
>
>>
>> enum Color
>> { GRAY }
>>
>> void setColor(Color color);
>>
>> setColor(GRAY);
>
> Then that defeats the purpose of havi
On Wednesday, 25 April 2018 at 02:32:32 UTC, Per Nordlöw wrote:
On Wednesday, 25 April 2018 at 02:23:04 UTC, Mike Franklin
wrote:
Are people using self assignment of structs as a way of
force-running the postblit? Is there a valid use case for
that?
Mike
If they are, there should be a bett
On Tuesday, 24 April 2018 at 21:36:19 UTC, Rubn wrote:
I was wondering if I could create my own property in a way that
can be used the same way as something like "T.sizeof". Right
now I have the following to replace length:
uint length32(T)(T[] array)
{
return cast(uint)array.length;
}
I
On Wednesday, 2 May 2018 at 10:39:29 UTC, ag0aep6g wrote:
On 04/28/2018 06:36 PM, Gerald wrote:
What is the appropriate way to create a variable for the range
returned by RedBlackTree lowerBound and upperBound. For
example, given this code:
```
RedBlackTree!long promptPosition = redBlackTree!
On Wednesday, 2 May 2018 at 20:32:43 UTC, jmh530 wrote:
In the function below, there is a template parameter and a
normal parameter both with the same name. However, the function
returns the normal parameter. The template parameter is
effectively ignored. I was surprised by this behavior.
Is
On Thursday, 3 May 2018 at 02:48:10 UTC, jmh530 wrote:
On Thursday, 3 May 2018 at 00:52:58 UTC, Meta wrote:
[snip]
It's not a big per se. It's a consequence of the declaration
expanding to the real template function form (I can't type it
all out as I'm on my phone), thus the inner `val` from
On Wednesday, 9 May 2018 at 14:07:37 UTC, Per Nordlöw wrote:
Why (on earth) does
struct S
{
@disable this(this);
int* _ptr;
}
pragma(msg, typeof(S.tupleof));
prints
(int*, void*)
when
struct S
{
int* _ptr;
}
pragma(msg, typeof(S.tupleof
On Wednesday, 9 May 2018 at 18:04:40 UTC, Per Nordlöw wrote:
On Wednesday, 9 May 2018 at 17:52:48 UTC, Meta wrote:
I wasn't able to reproduce it on dmd-nightly:
https://run.dlang.io/is/9wT8tH
What version of the compiler are you using?
Ahh, the struct needs to be in a unittest block for it t
On Thursday, 10 May 2018 at 12:55:36 UTC, Uknown wrote:
On Thursday, 10 May 2018 at 11:06:06 UTC, Per Nordlöw wrote:
On Wednesday, 9 May 2018 at 21:09:12 UTC, Meta wrote:
It's a context pointer to the enclosing
function/object/struct. Mark the struct as static to get rid
of it.
Ok, but why a
On Thursday, 17 May 2018 at 15:25:37 UTC, Sjoerd Nijboer wrote:
Given the following code
`struct Foo(T)
if(isNumeric!T)
{
T t;
.. other code
}
struct Bar(T)
if(isNumeric!T)
{
T t;
.. other code
}
Foo!float foo_float;
Foo!double foo_double;
Bar!f
On Tuesday, 22 May 2018 at 18:20:43 UTC, Robert M. Münch wrote:
I see that I'm writing
try {
... different code ...
} catch (myException e) {
... same handling code ...
}
over and over again.
Of course I can put the exception handling code into a function
to not duplicate it. However,
On Saturday, 2 June 2018 at 23:17:48 UTC, Simen Kjærås wrote:
On Saturday, 2 June 2018 at 22:09:49 UTC, Neia Neutuladh wrote:
On Saturday, 2 June 2018 at 21:44:39 UTC, greatsam4sure wrote:
Sorry for the typo
is it possible to define infix function in D
3.min(5)// 3: where min is a function, w
On Monday, 11 June 2018 at 04:11:38 UTC, Bauss wrote:
On Monday, 11 June 2018 at 00:47:27 UTC, Jonathan M Davis wrote:
On Sunday, June 10, 2018 23:59:17 Bauss via
Digitalmars-d-learn wrote:
What is the point of nothrow if it can only detect when
Exception is thrown and not when Error is thrown?
On Thursday, 14 June 2018 at 11:31:50 UTC, Robert M. Münch wrote:
I have a simple tree C data-structure that looks like this:
node {
node parent:
vector[node] children;
}
I would like to create two foreach algorthims, one follwing the
breadth first search pattern and one the de
On Thursday, 28 June 2018 at 17:00:37 UTC, Mr.Bingo wrote:
I mean, if you think about it, the memory layout of a tuple is
sequential types:
T1
T2
...
So, to popFront a tuple is just changing the starting offset.
You're right; it can definitely be done.
struct TupleRange(T...)
{
size
On Monday, 28 January 2019 at 22:17:56 UTC, Steven Schveighoffer
wrote:
On 1/28/19 3:28 PM, Jonathan Levi wrote:
On Sunday, 27 January 2019 at 09:31:46 UTC, bauss wrote:
On Sunday, 27 January 2019 at 05:37:57 UTC, Jonathan Levi
wrote:
This works in LDC *but not* DMD?
. . .
Is this a bug in DMD
On Wednesday, 30 January 2019 at 01:02:37 UTC, Jonathan M Davis
wrote:
Yeah. It would be like trying to do something like
alias x = this.x;
As it stands, I believe that super is always either used as a
function call to the constructor or to mean the this pointer
for the base class. I don't th
On Sunday, 10 February 2019 at 20:04:29 UTC, Per Nordlöw wrote:
Is there a way to query if the -dip1000 flag has been passed to
the compiler? I need it for enabling certain DIP-1000 escape
analysis tests only when -dip1000 has been passed.
For instance
static assert(!__traits(compiles, {
On Saturday, 16 March 2019 at 03:47:43 UTC, Murilo wrote:
Does anyone know if when I create a variable inside a scope as
in
{int a = 10;}
it disappears complete from the memory when the scope finishes?
Or does it remain in some part of the memory? I am thinking of
using scopes to make optimize
On Wednesday, 17 April 2019 at 22:37:38 UTC, Adam D. Ruppe wrote:
On Wednesday, 17 April 2019 at 19:07:46 UTC, Jacob Carlborg
wrote:
Perhaps try some of these flags [1] and [2].
oooh, those are very interesting too.
What I was kinda hoping is it would have stats for which file
and line of co
On Tuesday, 11 June 2019 at 17:12:17 UTC, Robert M. Münch wrote:
Is there a simple and elegant way to do this? Or is just using
a foreach(...) with canFind() the best way?
There are two versions of find that can find a range within
another:
https://dlang.org/phobos/std_algorithm_searching.ht
On Sunday, 9 July 2017 at 21:12:24 UTC, bauss wrote:
On Sunday, 9 July 2017 at 19:43:14 UTC, Christian Köstlin wrote:
I wonder if there is any fiber based / fiber compatible
UI-Toolkit out for dlang. The second question is, if it would
make sense at all to have such a thing?
christian
It do
On Tuesday, 18 July 2017 at 15:28:06 UTC, Antonio Corbi wrote:
Hi all,
I'm trying dmd-2.075.0-rc1 in one of my projects where I use
`squeeze` and `removechars`. Both of them are flagged as
obsolete and in the docs we are suggested to use functions from
std.regex and/or std.algorithm.
Does a
On Thursday, 20 July 2017 at 13:11:56 UTC, Alex wrote:
On Thursday, 20 July 2017 at 12:33:43 UTC, Alex wrote:
The Problem is, i dont know what type WHAT_TYPE is / i don´t
know how to build a loopable something of futures.
Ok, i think i understood now.
my function `load` returns `KpiResponseEn
On Thursday, 27 July 2017 at 21:16:03 UTC, Chris wrote:
I'm using regex `matchAll`, and mapping it to get a sequence of
strings. I then want to pass that sequence to a function. What
is the general "sequence of strings" type declaration I'd need
to use?
In C#, it'd be `IEnumerable`. I'd rathe
On Sunday, 30 July 2017 at 02:58:09 UTC, Mike wrote:
I'm trying to use std.xml, and I can't get it to work.
I tried the simplest program I could think of:
import std.xml;
import std.stdio;
void main()
{
auto parser = new DocumentParser("encoding=\"utf-8\"?>");
parser.onStartTag["device"]
On Thursday, 3 August 2017 at 15:29:47 UTC, jmh530 wrote:
I am trying to create a vectorize function that mixes in a new
version of function with the same name that applies the
function (to an ndslice).
The code below compiles without error and has the behavior I
would expect.
However, when
On Thursday, 3 August 2017 at 19:03:55 UTC, Meta wrote:
`mixin vectorize!sin vsin; alias sin = vsin;` and see if it
Should be `alias sin = vsin.sin;`
On Wednesday, 9 August 2017 at 21:54:46 UTC, Q. Schroll wrote:
For a class/interface type `A` and a class `C` inheriting from
`A` one can do
A a = getA();
if (auto c = cast(C) a)
{ .. use c .. }
to get a `C` view on `a` if it happens to be a `C`-instance.
Sometimes one cannot find a goo
On Wednesday, 9 August 2017 at 01:39:07 UTC, Jason Brady wrote:
Why does the following code error out with:
app.d(12,10): Error: function app.FunctionWithArguments (uint
i) is not callable using argument types ()
Code:
import std.stdio;
void FunctionWithoutArguments() {
}
void FunctionWith
On Thursday, 10 August 2017 at 15:55:41 UTC, Jason Brady wrote:
Wow. That makes perfect sense. I forgot stringof works only
with expressions
It works with symbols too. See the following:
template test(){}
pragma(msg, test.stringof);
It's hard to tell offhand but I would recommend that you extract
the inner string into a function that generates that string,
allowing you to print out the finished product before mixing it
in.
On Thursday, 24 August 2017 at 19:41:46 UTC, Nordlöw wrote:
Given
enum e = ['a', 'b', 'c'];
import std.meta : AliasSeq;
enum a = AliasSeq!['a', 'b', 'c'];
is it somehow possible to convert (at compile-time) `e` to `a`?
Is it cheaper CT-performance wise to use AliasSeq instead of
enu
On Thursday, 21 September 2017 at 12:30:15 UTC, David Bennett
wrote:
On Thursday, 21 September 2017 at 11:42:36 UTC, David Bennett
wrote:
[snip]
```
string[] escapeCTFE(Args...)(){
static foreach (arg; Args){
static if(__traits(compiles, ###WHATDOIPUTHERE###)){
[snip]
So far the
On Friday, 13 October 2017 at 01:12:38 UTC, solidstate1991 wrote:
On Friday, 13 October 2017 at 01:09:56 UTC, solidstate1991
wrote:
I'm making a struct for easy color handling Here's a code
sample:
ublic struct Color{
union{
uint raw; ///Raw representation in integer form, also force
On Friday, 13 October 2017 at 13:22:42 UTC, Adam D. Ruppe wrote:
* Use a @property ref function to return the array element and
trust the compiler to inline it.
You could also use pragma(inline, true).
On Thursday, 30 November 2017 at 20:49:36 UTC, flamencofantasy
wrote:
Hello,
I have the following csv text;
auto input = "Start Date,End Date,Subject,All day
event,Categories,Show time as
1/1/2018,1/1/2018,New Year's Day,TRUE,Holiday,3
1/15/2018,1/15/2018,\"Martin Luther King, Jr.
Day\",TRUE
On Monday, 4 December 2017 at 22:34:41 UTC, helxi wrote:
Why can't enums be used as types in this (simplified) example?
enum Positivity
{
Positive,
Negative
}
struct Wave
{
public:
Positivity slope;
}
enum Waves
{
Sin = Wave(Positivity.Positive),
Cos = W
On Monday, 18 December 2017 at 23:44:46 UTC, Michael wrote:
Hello,
I have been looking at the following example found right at the
end of the section here:
https://dlang.org/spec/declaration.html#alias
struct S { static int i; }
S s;
alias a = s.i; // illegal, s.i is an expression
alias b =
On Friday, 29 December 2017 at 12:03:59 UTC, Mike Franklin wrote:
In C#, structs can inherit from and implement interfaces.
using System;
interface IPrint
{
void Print();
}
struct MyStruct : IPrint
{
public void Print()
{
Console.WriteLine(ToString());
}
}
public
On Monday, 15 January 2018 at 13:55:57 UTC, Nordlöw wrote:
Why do I get errors like
template instance remove!((_) => _ == 1) cannot use local
'__lambda5' as parameter to non-global template remove()(in K
key)
for
x.remove!(_ => _ == 1);
but not for
x.remove!"a == 11";
?
How are
On Friday, 26 January 2018 at 14:16:04 UTC, aliak wrote:
1) I've seen some phobos code checking for assignability like
this:
is(typeof(range.front = false))
... is that an advantage of that over hasAssignableElements? Or
is that just basically combining constraints 3 and 4 which I
have abo
On Friday, 9 February 2018 at 21:31:29 UTC, ShadoLight wrote:
writeln(parse(code)); // to aid with debugging
writeln(convertToD(parse(code))); // debugging aid
..to..
writeln(parse(code)[]); // to aid with debugging
writeln(convertToD(parse(
On Monday, 12 February 2018 at 02:05:16 UTC, aliak wrote:
From spec: Cast expression: "cast ( Type ) UnaryExpression"
converts UnaryExpresssion to Type.
And https://dlang.org/spec/operatoroverloading.html#cast makes
no mention of the return type of opCast. One could think that
the return type
On Wednesday, 14 February 2018 at 23:46:30 UTC, aliak wrote:
On Wednesday, 14 February 2018 at 15:14:24 UTC, Meta wrote:
I think the best way to do this is to implement `map` for your
optional type.
Optional!U map(U, alias f)()
{
return empty? no!U : some!U(f(t));
}
Optional!int a = 3;
On Thursday, 15 February 2018 at 00:27:40 UTC, Meta wrote:
On Wednesday, 14 February 2018 at 23:46:30 UTC, aliak wrote:
On Wednesday, 14 February 2018 at 15:14:24 UTC, Meta wrote:
Ooh yes, of course! Thank you :)
Even better:
import std.conv;
auto b = a.map!(to!float);
Actually, that won'
On Wednesday, 21 February 2018 at 22:11:04 UTC, Jean-Louis Leroy
wrote:
Here's what I am trying to do:
mixin template MakeFun(string ID, int X)
{
int mixin(ID)() { return X; }
}
mixin MakeFun!("one", 1); // int one() { return 1; }
Alas I get:
makefunc.d(3): Error: no identifier for declarato
On Wednesday, 21 March 2018 at 15:36:01 UTC, Márcio Martins wrote:
Hi!
How do I get past this?
static struct X {
int x;
private enum T = 1;
private alias M = string;
}
foreach (Member; __traits(allMembers, X)) {
pragma(msg, __traits(getProtection, __traits(getMember,
On Tuesday, 3 April 2018 at 19:02:25 UTC, Vladimirs Nordholm
wrote:
Hello people.
I currently have a function which multiple times per second
takes in arguments, and appends the argument as my special
type. The following code should explain what I do more properly:
struct MySpecialType {
On Tuesday, 3 April 2018 at 20:02:46 UTC, Vladimirs Nordholm
wrote:
On Tuesday, 3 April 2018 at 19:53:11 UTC, Meta wrote:
On Tuesday, 3 April 2018 at 19:02:25 UTC, Vladimirs Nordholm
wrote:
[...]
In this specific case, since you know the length of `Args`,
you can pre-allocate an array of tha
On Wednesday, 14 October 2015 at 14:42:31 UTC, Namal wrote:
Hello,
I don't remember exactly but I think when I first saw D code
there was tree datatype implemented without pointers. Is it
possible to make a tree struct without pointers?
The answer is more or less no, unless you sort of fake
On Friday, 16 October 2015 at 10:38:52 UTC, Shriramana Sharma
wrote:
Is there a particular reason that File.byLine() returns char[]
and not string i.e. immutable(char)[]? Is it just to avoid
being overly restrictive? It seems that having to .idup it is
inefficient...
byLine reuses an internal
On Friday, 16 October 2015 at 10:35:23 UTC, Shriramana Sharma
wrote:
Hello. I still haven't wrapped my mind around the
const/immutable thing yet and am still stuck in C/C++ mode. :-(
A function that takes mutable arguments cannot be called with
immutable input at the call site since it does no
On Friday, 16 October 2015 at 12:48:42 UTC, Meta wrote:
This doesn't work for char because it has indirections (a
pointer to its data).
Whoops, should be char[], not char.
On Friday, 16 October 2015 at 15:02:54 UTC, anonymous wrote:
On Friday, October 16, 2015 02:03 PM, Per Nordlöw wrote:
zip(r, r.dropOne).map!((t) => t[1]-t[0]);
You should r.save one or both of those. The dropOne may affect
both instances if you don't .save.
By the way, what's the point of
On Sunday, 18 October 2015 at 15:03:22 UTC, Suliman wrote:
Sorry, but could you explain more simply? I reread all
information, bit can't understand about what buffer you are
talking.
This is more or less how byLine works, simplified:
struct ByLine
{
File file;
char[] line;
char[]
On Sunday, 18 October 2015 at 17:48:20 UTC, Freddy wrote:
How do you call startsWith with only a predicate
---
import std.algorithm;
import std.ascii;
bool iden(string str)
{
return str.startsWith!(a => a.isAlpha || a == '_');
}
---
Is this a simplified use case of some actual code you hav
On Monday, 26 October 2015 at 18:46:45 UTC, Dandyvica wrote:
Hi all,
I'm trying to find out a solution to implement a generic tree
or array container whose nodes
can either be elements or a subtree (or sub-array).
Pretty much like you can do in Python:
l = [1, 2, [1, 2, 3], 4]
l is a list o
On Monday, 26 October 2015 at 20:53:18 UTC, Dandyvica wrote:
Thanks Meta, great idea.
But does I'd like to have something like dynamic arrays and be
able to do this:
class A(T) { T _v; this(T v) { _v = v; } }
auto myContainer = MyContainerArray!(A!int)();
myContainer ~= new A!int(1);
myCon
On Thursday, 29 October 2015 at 06:13:17 UTC, guodemone wrote:
衷心的谢谢你,(very veryvery thank you in english)
请问，你是学生吧？你是哪个中国大学的学生？我也希望DLang可以进入中国的大学,祝你的OS好运！
On Thursday, 5 November 2015 at 16:29:30 UTC, Namal wrote:
Hello I am trying to convert BigInt to string like that while
trying to sort it:
string s1 = to!string(a).dup.sort;
and get an error
cannot implicitly convert expression (_adSortChar(dup(to(a
of type char[] to string
what do I
On Thursday, 5 November 2015 at 20:45:45 UTC, TheGag96 wrote:
Whoa whoa whoa... This is the first time I've heard about this
difference, and I've used .sort plenty of times... That seems
like really, REALLY bad design, especially considering the
language allows functions to be called without pa
On Sunday, 8 November 2015 at 10:31:13 UTC, Panke wrote:
import std.variant, std.stdio;
---
struct NodeTypeA(T) { T[] children; }
struct NodeTypeB(T) { Tree children; }
struct Leaf(T) { T delegate() dg; }
alias Tree = Algebraic!(Leaf, NodeTypeA!This, NodeTypeB!This);
void main()
{
Tree t;
}
On Sunday, 15 November 2015 at 15:34:19 UTC, Jacob Carlborg wrote:
I'm pretty sure that the only things that are excluded are
module info and type info. It's still possible to use "new" and
all the array features that requires support in the runtime
(slicing, concatenation, appending and so on)
On Wednesday, 18 November 2015 at 12:20:42 UTC, maik klein wrote:
https://stackoverflow.com/questions/33779822/unable-to-call-each-on-a-lockstep-range-containing-2-or-more-ranges
http://dpaste.dzfl.pl/76c79f1f12ab
void main(){
import std.container;
import std.stdio;
import std.algorithm.i
On Wednesday, 18 November 2015 at 17:40:21 UTC, maik klein wrote:
On Wednesday, 18 November 2015 at 17:22:52 UTC, Meta wrote:
Which version of the compiler are you using?
Linux - DMD64 D Compiler v2.069.0
https://issues.dlang.org/show_bug.cgi?id=15357
https://issues.dlang.org/show_bug.cgi?id
On Wednesday, 18 November 2015 at 23:53:01 UTC, Chris Wright
wrote:
---
char[] buffer;
if (buffer.length == 0) {}
---
This is not true. Consider the following code:
import std.stdio;
void main()
{
int[] a = [0, 1, 2];
//4002E000 3
writeln(a.ptr, " ", a.length);
On Thursday, 19 November 2015 at 06:57:20 UTC, Jack Applegame
wrote:
Really? http://dpaste.dzfl.pl/b11346e8e341
Sorry, I said the exact opposite of what I meant to say. The
`assert(a == null)` *is* triggered because the expression `a ==
null` fails, even though a.length == 0. You should not u
On Thursday, 19 November 2015 at 13:49:18 UTC, Meta wrote:
On Thursday, 19 November 2015 at 06:57:20 UTC, Jack Applegame
wrote:
Really? http://dpaste.dzfl.pl/b11346e8e341
Sorry, I said the exact opposite of what I meant to say. The
`assert(a == null)` *is* triggered because the expression `a
On Saturday, 21 November 2015 at 05:45:25 UTC, Shriramana Sharma
wrote:
The page http://dlang.org/exception-safe.html says:
"It's try-finally that becomes redundant."
IIUC this is because we have scope(exit).
Does this mean that `finally` should eventually be removed from
the language?
The
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