Mistake. It says about simple argument:
cannot pass rvalue argument `x` of type `Word!(wstring,
wstring)` to parameter `ref const(Word!(wstring, wstring)) base`
Function:
void _setPastBases(const ref Data item, const ref UsualWord
base)
Hello,
Dmd gives an error:
Error: function `_setPastBases(ref const(Data) item, ref
const(Word!(wstring, wstring)) base)` is not callable using
argument types `(const(Data), Word!(wstring, wstring))
where Data and Word - structs.
What happens and how to pass arguments?
Ldc compiles without
On Wednesday, 13 January 2021 at 11:31:16 UTC, Bastiaan Veelo
wrote:
On Wednesday, 13 January 2021 at 09:11:53 UTC, Guillaume Piolat
wrote:
On Wednesday, 13 January 2021 at 08:35:09 UTC, Andrey wrote:
Hello all,
Tell me please how can I "writeln" and "write" in function
that is used in CTFE?
Hello all,
Tell me please how can I "writeln" and "write" in function that
is used in CTFE?
At the moment I get this:
import\std\stdio.d(4952,5): Error: variable impl cannot be
modified at compile time
Or may be exist some other ways to do it?
Hello,
struct Value
{
int value;
string data;
string[] text;
}
void test(const ref Value value)
{
Value other = void;
other.text = value.text;
}
void main()
{
Value row;
row.value = 10;
row.data = "ggg";
test(row);
}
I want to pass variable "row"
Thank you!
Hm, you mean that enum variable is not a real variable?
I thought that to make CT variable you should mark it as enum (in
c++ as constexpr).
How to do it here?
Hello,
void test(const ref string[3] qazzz) { qazzz.writeln; }
void main()
{
enum string[3] value = ["qwer", "ggg", "v"];
test(value);
}
Gives errors:
onlineapp.d(26): Error: function onlineapp.test(ref
const(string[3]) qazzz) is not callable using argument types
(string[3])
Hello,
Are here any differences in creation of dynamic array with known
size?
auto array = new wchar[](111);
and
wchar[] array;
array.length = 111;
Thank you!
Hi,
I have got:
struct Qaz
{
wstring read() {return null;}
wstring hear() {return "";} }
void main()
{
// ...
static if(some_condition) alias method = Qaz.hear;
else alias method = Qaz.read;
// ...
Qaz qaz;
qaz.method(); // ???
}
How to call alias
And what about:
void test() {}
and
void text(alias qqq)() {}
?
Hello,
How to count a number of parameters in uninitialized template
method?
For example:
struct Test
{
void abc(int a, bool status, string text)() {}
{
The method "Test.abc" has three template paramenters.
I know that "TemplateArgsOf" exists but it is used only for
INITIALIZED
Thanks everyone.
Hi,
I want to sum lengths of all strings in array:
auto data = ["qwerty", "az", ""];
Fold and reduce doesn't work:
auto result = data.fold!`a + b.length`(0U);
gives error:
static assert: "Incompatible function/seed/element:
binaryFun/uint/string"
How to do it in one line?
On Wednesday, 13 May 2020 at 12:58:11 UTC, Adam D. Ruppe wrote:
On Wednesday, 13 May 2020 at 12:45:06 UTC, Andrey wrote:
Why this works:
It's just defined that way. Local functions follow local
variable rules - must be declared before use and names not
allowed to overload each other.
Hi,
Why this works:
void setBases(string type)(ref int data, string base, string[]
syllables)
{
}
void setBases(string type, T)(ref int data, const ref T source)
{
}
void main()
{
int q = 6;
setBases!"tt"(q, "qwerty", ["tg", "jj"]);
setBases!"tt"(q, q);
}
and this doesn't
Hello,
I'm trying to bind C library for Tcl/Tk in D code. There is a
function called "Tcl_CreateInterp()" which I declared as
extent(C). When I call this function then layout of memory become
broken - one of my global wstring variables loses it's value.
I don't know why it is happens. If I
On Saturday, 18 January 2020 at 21:44:35 UTC, Boris Carvajal
wrote:
I read that thread. But:
Deprecation: initialization of immutable variable from static
this is deprecated.
Use shared static this instead.
And we get? No CTFE with static immutable AA?
Hello,
Why this doesn't work?
import std;
struct Qwezzz
{
shared static this()
{
qaz = qazMap;
}
enum qazMap = ["rrr": "vv", "hty": "4ft6"];
static immutable string[string] qaz;
}
void main()
{
enum sorted = Qwezzz.qaz.keys.sort();
}
The variable "qaz"
On Tuesday, 22 October 2019 at 12:57:45 UTC, Daniel Kozak wrote:
Have you try to clean all caches? Try to remove .dub folder
I removed .dub folder but this error appears again.
Hello,
During compilation on linking stage I get strange errors (LDC):
lld-link: error: undefined symbol:
_D3std7variant__T8VariantNVmi56TSQBf8typecons__T5TupleTAyuTSQCgQCf__TQCaVmi32TSQCzQBu__TQBoTAQBmTQBqZQCbTQnTQCbZQDrZQCqTQBcTQCrZQEh4typeMxFNbNdNeZC8TypeInfo
referenced by
On Monday, 21 October 2019 at 20:44:29 UTC, Nicholas Wilson wrote:
works, so I guess contains doesn't work with immutable?
If you can do some more research into this and confirm it then,
please file a bug report.
As I understand - yes. It doesn't work with immutable object.
Also I see the
Hello,
I have got a global constant immutable array:
immutable globalvalues = sort(cast(wstring[])["й", "ц", "ук",
"н"]);
Somewhere in program I want to check an existance:
globalvalues.contains("ук"w).writeln;
But get an error:
Error: template std.range.SortedRange!(wstring[], "a <
On Saturday, 19 October 2019 at 18:54:28 UTC, Andre Pany wrote:
In dub.json of your child apps you need to add a dependency to
parentapp.
I added via "dependencies" parameter and after got this error:
"Detected dependency cycle".
Hi,
I have got this structure of my project:
parentapp
dub.json
source
common.d
childapp1
dub.json
source
app.d
somefile.d
childapp2
dub.json
source
app.d
The "childapp1" and "childapp2" are standanole
Hello,
I can't compile this piece of code:
struct Object
{
void run(wstring ending, uint index)(int number)
{
}
}
void tester(alias callback, T)(int number, T object = null)
{
static if(is(T == typeof(null))) alias handler = callback;
else auto handler(wstring ending, uint
Hello, how to get name of my application (project) that we write
in dub.json? Is there any compile-time constant like __MODULE__?
On Tuesday, 9 July 2019 at 19:04:53 UTC, Max Haughton wrote:
Is this a 64 or 32 bit compiler? Also could you post the source
code if possible?
You could try "--DRT-gcopt=profile:1" druntime flag to see if
the compiler is running out of memory for real
Thanks for help. I solved my issue by
On Tuesday, 9 July 2019 at 17:59:24 UTC, Max Haughton wrote:
On Tuesday, 9 July 2019 at 17:48:52 UTC, Andrey wrote:
Hello,
I have got a problem with compile-time calulations.
I have some code generator that should create some long string
of code during CT and after generation I mixin it. If I
On Tuesday, 9 July 2019 at 17:59:24 UTC, Max Haughton wrote:
On Tuesday, 9 July 2019 at 17:48:52 UTC, Andrey wrote:
I in addition wrote "buffer.reserve(10 * 1014 * 1024);" and it
also doesn't help.
Hello,
I have got a problem with compile-time calulations.
I have some code generator that should create some long string of
code during CT and after generation I mixin it. If I run it
normally - in run time - then there is no error and I get
expected output - string with size ~ 3.5 MB.
If I
Hello,
Is it possible to mixin in code a mangled name of some entity so
that compiler didn't emit undefined symbol error? For example
mangled function name or template parameter?
Hello,
Is it possible to mixin in code a mangled name of some entity so
that compiler didn't emit undefined symbol error? For example
mangled function name or template parameter?
On Sunday, 9 June 2019 at 10:42:12 UTC, Basile-z wrote:
On Sunday, 9 June 2019 at 10:22:36 UTC, Andrey wrote:
Hello,
I have got 2 functions:
void myFunc(string name, int a)(wstring value) {}
void myFunc(string name, int a)() {}
I want to make an alias (for example for second function
Hello,
I have got 2 functions:
void myFunc(string name, int a)(wstring value) {}
void myFunc(string name, int a)() {}
I want to make an alias (for example for second function without
argument):
alias myAlias(int a) = myFunc!("Name", a);
but compiler says:
... matches more than one
On Sunday, 26 May 2019 at 18:21:23 UTC, Dennis wrote:
On Sunday, 26 May 2019 at 18:14:23 UTC, Jacob Carlborg wrote:
No, that's not possible.
Some hacky solutions are possible by importing a source file as
a string and parsing it manually. dglsl actually extracts D
function code to put into
Hello,
Is it possible to extract code of some function into string
variable using CT reflextion?
For example:
int test(bool flag)
{
return flag ? 100 : getRandom();
}
enum string code = GetFunctionCode!test; // "return flag ? 100
: getRandom();"
Hello,
Let we have got 3 template functions:
void func1(int a)() {}
void func2(int a, string b)() {}
void func3(int a, string b, bool c)() {}
As we see, the first function accepts 1 template argument, the
second - 2 and the third - 3.
What compiles faster:
1. When a program has got 100
Hello, I have got this code:
alias Group = Tuple!(int[], "data", int, "key");
void main()
{
enum group = [
Group([1,2,3,4], 1),
Group([5,3], 1),
Group([4,5,4, 8, 9, 4], 1),
Group([2,3,4], 1),
];
enum result = group.sort!"a.data < b.data"().array();
enum Qaz : wstring
{
One = "один"
}
template Qwerty(Values...)
{
enum text = "Values[%d]";
enum args = iota(Values.length).map!(value =>
format!text(value)).join(',');
pragma(msg, args);
alias Qwerty = Alias!(mixin("AliasSeq!(" ~ args ~ ");"));
}
void main()
{
On Wednesday, 24 April 2019 at 08:28:06 UTC, Basile.B wrote:
On Wednesday, 24 April 2019 at 07:53:47 UTC, Andrey wrote:
I know about this template. Unfortunally, it doesn't work inside
functions.
void test(string arg1, string arg2)
{
enum isKnown1 = is(typeof((){enum v = arg1;}));
Hi all,
Do you know can we detect that some argument of a function can be
handled in CT?
For example:
int value1 = 10;
someFunction(value1);
int value2 = getValueFromUserInput();
someFunction(value2);
void someFunction(int arg)
{
static if(argCanBeHandledInCT(arg))
{
// perform
Hello,
I want to make partial alias of template function "format":
void qaz(alias tmp, Values...)()
{
alias message = format!tmp;
// ...
enum v = message(Values);
}
void main()
{
qaz!("test %s!", "Qwerty");
}
But I get this:
Error: static assert:
Hello,
I have got 2 enums. How to inherit one enum from another?
enum Key : string
{
K1 = "qwerty",
K2 = "asdfgh"
}
enum ExtendedKey : Key
{
E1 = "q1",
E2 = "w2",
E3 = "e3"
}
Result:
onlineapp.d(27): Error: cannot implicitly convert expression
"q1" of type string to Key
On Sunday, 14 April 2019 at 11:44:16 UTC, Boris Carvajal wrote:
On Sunday, 14 April 2019 at 10:07:30 UTC, Andrey wrote:
Create some function in loop and use it. But I don't know how
to mixin names?
import std.stdio;
void main()
{
enum letters = ['A', 'B', 'C'];
static foreach(ch;
Hi,
I want to do something like this:
void main()
{
enum letters = ['A', 'B', 'C'];
static foreach(ch; letter)
{
void mixin("print" ~ ch)(uint i)
{
writeln(ch, " - ", i);
}
}
printB(6);
}
Create some function in loop and use it.
Hello,
In this example how can I access the members "read" and "q" of
struct Outer from Inner struct?
struct Outer
{
ulong q = 1;
Inner inner;
void read(ulong value)
{
q += value;
}
void run()
{
q.writeln;
read(5);
}
struct
Hello,
My code:
import std.string : join;
enum Key : string
{
First = "qwerty",
Last = "zaqy"
}
struct Qaz
{
enum text(alias Values) = Values.map!(value => "bool has" ~
value ~ " = false;").join();
}
//enum text(alias Values) = Values.map!(value => "bool has" ~
value ~ " =
Hello,
enum Key : string
{
First = "qwerty",
Last = "zaqy"
}
void main()
{
enum decl(alias values1) = q{
static foreach(value; values1)
mixin("bool " ~ value ~ " = false;");
};
enum qqq = [Key.First, Key.Last];
mixin(decl!qqq);
}
I
Hello,
Simple code:
import std.stdio;
mixin template DeclFlag(alias values)
{
static foreach(value; values)
{
mixin("bool has" ~ value ~ " = false;");
}
}
enum Key : string
{
First = "qwerty",
Last = "zaqy"
}
void main()
{
enum data = [Key.First, Key.Last];
On Wednesday, 27 March 2019 at 19:16:21 UTC, kdevel wrote:
On Wednesday, 27 March 2019 at 13:39:07 UTC, Andrey wrote:
Thank you!
Hello,
I have got some text with UTF-8. For example this part:
ΠαÏάλληλη αναζήÏηÏη
How to decode it to get this result?
Παράλληλη αναζήτηση
I have tried functions like "decode", "byUTF", "to!wchar"... but
no success.
Input string is correct - checked it with
Hello,
I have got 2 simple arrays with the same length:
int[] values = [1, 2, 3, 4, 5];
char[] keys = ['a', 'b', 'c', 'd', 'e'];
auto result = buildAA(keys, values); // [a: 1, b: 2, c: 3, d:
4, e: 5]
I want to build AA "result" using "values" and "keys". How to do
it?
Hello,
How to break from parallel foreach?
More general question - how to control such loop?
On Friday, 11 January 2019 at 15:23:08 UTC, Dgame wrote:
On Friday, 11 January 2019 at 14:46:36 UTC, Andrey wrote:
Hi,
In C++ you can create a fixed array on stack:
int count = getCount();
int myarray[count];
In D the "count" is part of type and must be known at CT but
in example it is RT.
Hi,
In C++ you can create a fixed array on stack:
int count = getCount();
int myarray[count];
In D the "count" is part of type and must be known at CT but in
example it is RT.
How to do such thing in D? Without using of heap.
Hi,
I want to filter AA at compile time and do this:
void main()
{
// datamap is some AA
enum qaz = "qq";
enum types = datamap.byKeyValue.filter!(pair =>
qaz.isGood(pair)).assocArray();
types.writeln;
}
But compiler says:
Error: _aaRange cannot be interpreted at compile
Hi,
Here is a template mixin:
mixin template create(alias input, uint index, alias data)
{
if(input.length < index) return;
// ... some code
}
When I try to compile it, I get:
Error: declaration expected, not if
Is it possible to mixin operator 'if' directly inside my template
Hi,
I have got this code:
import std.array : array;
import std.algorithm.mutation;
import std.algorithm.iteration;
import std.stdio;
void main()
{
string input = "sieviaghp";
enum data = ["emo", "emoze", "emow", "emuo", "evuo", "ete",
"ie", "vuo", "sie", "w"];
enum index = 3;
On Tuesday, 18 December 2018 at 12:32:35 UTC, angel wrote:
On Tuesday, 18 December 2018 at 12:07:37 UTC, Andrey wrote:
Thank you everybody.
Here was another problem that local variable 'array' shadows
function 'array()' from std.array.
Hi,
Have array:
enum array = ["qwerty", "a", "baz"];
Need to reverse and sort array elements to get this result:
[a, ytrewq, zab]
Did this:
enum result = array.map!(value => value.retro()).sort();
Got:
Error: template std.algorithm.sorting.sort cannot deduce
function from argument types
Hi,
I want to create a static array and immediately init it with
values:
uint[x] data = [1,3,10,44,0,5000];
I don't want to set the length of it explicitly (x in square
brackets). I want that compiler itself counted number of values
(in example it is 6).
What should be a right
On Friday, 30 November 2018 at 11:21:04 UTC, fghost wrote:
On Friday, 30 November 2018 at 11:05:26 UTC, Andrey wrote:
Hi,
How to pass -J switch to compiler via DUB?
I want to import some text file at compile time:
string data = import("vertex.glsl");
In dub.json:
"dflags": [
Hi,
How to pass -J switch to compiler via DUB?
I want to import some text file at compile time:
string data = import("vertex.glsl");
In dub.json:
"dflags": [
"-J=vertex.glsl"
]
The file itself is located on the same level as "dub.json".
On Monday, 26 November 2018 at 12:11:03 UTC, Alex wrote:
On Monday, 26 November 2018 at 11:57:40 UTC, Andrey wrote:
Hello,
I try to build my project using command "dub build" but I
can\t because there is an error:
Fetching derelict-util 3.0.0-beta.2 (getting selected
version)...
SSL connect
Hello,
I try to build my project using command "dub build" but I can\t
because there is an error:
Fetching derelict-util 3.0.0-beta.2 (getting selected
version)...
SSL connect error on handle 1F19AC0
And this happens every time... As I understand dub can't find
package.
In dub.json I have
Hello,
Here is a code with comments: https://run.dlang.io/is/BNl2Up.
I don't understand how to pass lambda into template.
I get an error:
onlineapp.d(18): Error: template instance `qwerty!((i) => "arg"
~ i.to!string ~ "[0] == '?'", "||")` cannot use local __lambda1
as parameter to non-global
On Friday, 31 August 2018 at 12:21:48 UTC, aliak wrote:
auto ToUnderlyingType(alias a)() {
return cast(OriginalType!(typeof(a)))a;
}
void print(T...)(T args) {
writeln(staticMap!(ToUnderlyingType, args));
}
Oohhh. So easy! Killed 2 days - and templates and mixins tried...
And the
On Thursday, 30 August 2018 at 12:04:26 UTC, vit wrote:
On Thursday, 30 August 2018 at 11:34:36 UTC, Andrey wrote:
On Thursday, 30 August 2018 at 11:09:40 UTC, vit wrote:
[...]
I want to create a reusable template for this purpose.
Why I can't use "staticMap" so that compiler it self would
On Thursday, 30 August 2018 at 11:09:40 UTC, vit wrote:
args are runtime arguments.
import std.experimental.all;
enum MyEnum : string
{
First = "F_i_r_s_t",
Second = "S_e_c_o_n_d"
}
///alias QW(alias arg) =
Alias!(cast(OriginalType!(typeof(arg)))arg);
auto QW(T)(const auto ref T x){
On Thursday, 30 August 2018 at 09:49:15 UTC, drug wrote:
30.08.2018 11:19, Andrey пишет:
Thanks everybody. Works!
Hello,
This code doesn't print enum values:
import std.meta;
import std.traits;
import std.stdio;
enum MyEnum : string
{
First = "F_i_r_s_t",
Second = "S_e_c_o_n_d"
}
alias QW(alias arg) =
Alias!(cast(OriginalType!(typeof(arg)))arg);
void print(T...)(T args)
{
Hello,
is it possible to declare an internal variable in "static
foreach" and on each iteration assign something to it?
Example:
static foreach(arg; SomeAliasSeq)
{
internal = arg[0].converted;// a shortcut for expression
"arg[0].converted"
static if(internal.length == 0) { ... }
On Tuesday, 28 August 2018 at 13:05:15 UTC, bauss wrote:
I'm not sure if there is a better way, but isInstanceOf
(std.traits) seems to work with a static foreach and a static
if.
template Qwerty(Values...)
{
static foreach (value; Values)
{
static if (!isInstanceOf!(Qaz,
Hello,
Let we have two variadic templates:
template Qwerty(Values...) {}
template Qaz(alias type, Data...) {}
Now I want to add a constraint to "Qwerty" so that each type in
"Values" pack must be a "Qaz" template. I don't care about values
of "type" or "Data" in "Qaz".
How to do it in D?
On Monday, 27 August 2018 at 11:56:08 UTC, Kamil Koczurek wrote:
Mixins seem to be an overkill here. Maybe something like this
would suffice:
data[index + 1 .. index + 5].map!(k => k[0]).array == ""
Here there is dynamic code, with memory allocs.
I found solution:
Hello again,
I have this part of code:
...
if(index + 3 >= data.length || data[index + 1][0] == '&' ||
data[index + 2][0] == '&' || data[index + 3][0] == '&' ||
data[index + 4][0] == '&')
{
writeln("Some text...");
}
I don't want to write manually these four "or" conditions because
in
Hello,
This code doesn't compile:
---
import std.meta;
import std.stdio;
enum Option : string
{
First = "-first" ,
Second = "-second",
Qwerty = "-qwerty"
}
void handler(Option option)(string[] args, ref ushort
Hello,
This code produces an error:
auto matches = content.matchAll(pattern);
auto max = matches.maxElement!"a => a.back.to!uint"();
I have a RegexMatch array like:
[["text1234", "1234"], ["zxs432fff", "432"], ["text000_",
"000"]]
Max element here is 1234.
I apply map function "a =>
Hello,
How to test if variable has void value?
string text = void;
if(text == void)
{
writeln("Is void");
}
Tried this:
if(is(text == void))
but doesn't work.
Hello,
Is there a template/function/mixin... in the library that I can
use to map elements of a tuple?
object.foo(Mapper!myMapFunction(1, bool, "Qwerty",
EnumedColor.Red));
where "Mapper" is this mapper and "myMapFunction" is a template
function that I want to apply to each member in
Hello,
I know that D has build-in unit tests. If so, what mechanism D
provides for mocking objects?
For example:
struct WebParser
{
// ...
int download(string path)
{
SomeHttpClient client(path);
auto result = client.request(path, 10, "Qwerty");
// ...
On Tuesday, 21 August 2018 at 22:52:31 UTC, Alex wrote:
Maybe, like this:
Thank you but here you use heap to create ab object. I want only
on stack.
I know that one can do this:
test_handler.ptr = null;
and in place of call this:
handler.ptr = cast(void*)
but it is ugly...
Hmm, any
Hello,
This is a code:
import std.stdio;
struct Test
{
static Test opCall()
{
Test test;
test.handler =
return test;
}
void one() const { writeln("In handler: Address = ", ,
"; Text = ", text); }
void execute()
{
text = "Inited!";
Hello,
I have a function:
string format(string pattern, T...)(T value)
{
auto writer = appender!string();
writer.formattedWrite!pattern(convertToUnderlyingType(value));
//Tuple!T(value).expand.to!(OriginalType!T)
return writer.data;
}
The "value" in this function can be any type
On Monday, 20 August 2018 at 17:45:25 UTC, Seb wrote:
... yet. Though you can vote for this DIP and show your support
there:
https://github.com/dlang/DIPs/pull/71
It even comes with an implementation in DMD already:
https://github.com/dlang/dmd/pull/8460
How and where to vote?
On Monday, 20 August 2018 at 13:35:07 UTC, ag0aep6g wrote:
On 08/20/2018 03:14 PM, Andrey wrote:
Thanks everybody for your answers.
On Monday, 20 August 2018 at 13:14:14 UTC, Andrey wrote:
Mistake... this is:
static void log(bool newline = true)(string text)
{
alias print(T...) = newline ? :
_file.print(text);
text.print();
}
Hello,
I want to make an alias to function "std.stdio.writeln" and
"std.stdio.write" and use it like:
static void log(bool newline = true)(string text)
{
alias print(T...) = newline ? :
_file.print();
text.print();
}
Unfortunately, it doesn't work... Also tried with "enum print
On Monday, 20 August 2018 at 11:38:39 UTC, Paul Backus wrote:
Create an overload of foo that takes two arguments and combines
them into a `Data` struct internally:
void foo(int a, string text)
{
Data data = {a, text};
foo(data);
}
Hmm, not very good solution. In C++ you can not to
On Monday, 20 August 2018 at 09:56:13 UTC, Jonathan M Davis wrote:
It's a combination of keeping the C semantics (in general, C
code is valid D code with the same semantics, or it won't
compile) and the fact that D requires casts for narrowing
conversions. When you add two shorts in C/C++, it
Hello,
I have a function and a struct:
void foo(ref Data data) { ... }
struct Data
{
int a;
string text;
}
How to pass struct into function without naming its type?
This doesn't work:
foo({1234, "Hello!"});
On Monday, 20 August 2018 at 08:49:00 UTC, rikki cattermole wrote:
Yes. On x86 int's will be faster just an FYI so it does make
sense to use them for computation.
Inconveniently always use casts. Why in D one decided to do in
such way?
On Monday, 20 August 2018 at 08:42:20 UTC, rikki cattermole wrote:
It's called integer promotion and it originates from C.
And yes C++ does have such support in some variant (I really
don't feel like comparing the two).
And I should do? Always use "cast" operator when I operate not
with
Hello,
Here is a code that you can execute using online compiler
https://run.dlang.io/:
import std.stdio;
void main()
{
ushort first = 5;
ushort second = 1000;
ushort result = first + second;
writeln(result);
}
I hae this error:
onlineapp.d(7): Error: cannot implicitly convert
Hello,
In D there is a nice function:
auto Tuple!(int,"status",string,"output") executeShell (
scope const(char)[] command,
const(string[string]) env = cast(const(string[string]))null,
Config config = cast(Config)0,
ulong maxOutput = 18446744073709551615LU,
scope const(char)[] workDir =
Hello,
I have the following code:
string[] list;
string text;
// ...
enum pattern = ctRegex!`^[0-9]+$`;
list = text.split('\n').map!(line =>
line.matchFirst(pattern).hit);
Compiler says that it can't convert result of map function to
string[]...
What I want:
1. Split some text into lines
On Tuesday, 14 August 2018 at 16:03:05 UTC, vit wrote:
import std.traits : EnumMembers;
import std.string : join;
import std.algorithm : map;
pragma(msg, [EnumMembers!Type].map!(x => cast(string)x).join("
"));
Thank you!
Jonathan M Davis, I understood.
On Tuesday, 14 August 2018 at 14:07:23 UTC, Timoses wrote:
Here's one version:
template StringEnumValues(alias Enum)
{
import std.traits : EnumMembers;
string[] StringEnumValues()
{
string[] enumValues;
static foreach (member; EnumMembers!Enum)
enumValues
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