Re: Why I need DUB? Will never DMD don't just use import for import packages?
On Thursday, 8 April 2021 at 21:36:02 UTC, Alain De Vos wrote: The most important task is "give me a list of to include .d files" "give me a list of the link libraries .a .so" sure, use -v flag, this will give you compiler flags and other info ``` dub build -v ``` this will give you extensive build information in json ``` dub describe ``` also if you don't like dub going internet just add this flag ``` --skip-registry=all ```
Re: Is there a more elegant way to do this in D?
On Thursday, 8 April 2021 at 22:27:38 UTC, Alain De Vos wrote: So which concrete types do you give for the two auto's. The first `auto` is the return type of `to!(ubyte[])`--so, it's `ubyte[]`. The second `auto` is the return type of `map`. If you look at the documentation [2], you'll see that it doesn't give a concrete type for the return value; it just says that `map` returns "an input range." That's because the concrete type is a so-called "Voldemort type" [1]--a type whose name is private to the function, and can't be used externally. Why use such a type? Because it gives the authors of `map` the freedom to change the concrete type without breaking code that uses `map`, as long as the type they change it to still supports the input range interface. [1] https://wiki.dlang.org/Voldemort_types [2] https://phobos.dpldocs.info/std.algorithm.iteration.map.map.html
Re: Is there a more elegant way to do this in D?
So which concrete types do you give for the two auto's.
Re: Is there a more elegant way to do this in D?
On Thursday, 8 April 2021 at 22:02:47 UTC, Alain De Vos wrote:
I resume in the 4 ways presented,
import std;
void main(){
auto a=[1,0,1,1,1,0,1,0,1,1,1,0];
string s = format!"%-(%s%)"(a);
writeln(s);
dchar[12] b = a.map!(to!string).joiner.array;
writeln(b);
auto conv = a.to!(ubyte[]);
conv[]+='0';
writeln(cast(string)conv);
auto r = a.map!(i => cast(char)(i + '0'));
writeln(r);
}
Why do the last two ways need "auto" as type ?
auto is not a type, it's inferring the type, like var in C#. It's
just convenient, saves you a few keystrokes.
Re: Is there a more elegant way to do this in D?
I resume in the 4 ways presented,
import std;
void main(){
auto a=[1,0,1,1,1,0,1,0,1,1,1,0];
string s = format!"%-(%s%)"(a);
writeln(s);
dchar[12] b = a.map!(to!string).joiner.array;
writeln(b);
auto conv = a.to!(ubyte[]);
conv[]+='0';
writeln(cast(string)conv);
auto r = a.map!(i => cast(char)(i + '0'));
writeln(r);
}
Why do the last two ways need "auto" as type ?
Re: Why I need DUB? Will never DMD don't just use import for import packages?
The most important task is "give me a list of to include .d files" "give me a list of the link libraries .a .so"
Re: Why I need DUB? Will never DMD don't just use import for import packages?
I think it should always be possible to build "offline". dub does stuff and I don't now what.
Re: Is there a more elegant way to do this in D?
On Thu, Apr 08, 2021 at 08:28:44PM +, Alain De Vos via Digitalmars-d-learn wrote: > The ascii code of 0 is 48 so I think you can add everywhere 48 (but > I'm not a specialist) Why bother with remembering it's 48? Just add '0', like this: int a = [1, 0, 1, 0, 1, ...]; string s = a.map!(i => cast(char)(i + '0')).array; writeln(s); Or better yet, if you just want to output it and don't need to store the array, just use the range directly: int a = [1, 0, 1, 0, 1, ...]; auto r = a.map!(i => cast(char)(i + '0')); writeln(r); T -- People say I'm arrogant, and I'm proud of it.
Re: Why I need DUB? Will never DMD don't just use import for import packages?
On Monday, 29 March 2021 at 19:06:33 UTC, Marcone wrote: Why can't I just use: import vibe.vibe; for import packages like Nim or Python? Why I still use DUB? Theoretically an rdmd-like tool can automatically infer dependencies from imports (autodub?). But it can also easily expose you to a supply chain attack.
Re: Is there a more elegant way to do this in D?
The ascii code of 0 is 48 so I think you can add everywhere 48 (but I'm not a specialist)
Re: Gui toolkits alive and gui toolkits dead
On Wednesday, 7 April 2021 at 13:00:37 UTC, Alain De Vos wrote: I meant dlang bindings. Is the binding dead or alive, Schrödinger's binding. Who knows...
Re: Is there a more elegant way to do this in D?
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, then this
gives the correct result
return (() @trusted => cast(string)conv)();
}
```
The @trusted lambda can also be replaced with
[std.exception.assumeUnique](https://dlang.org/library/std/exception/assume_unique.html).
Never mind me, assumeUnique is @system (or at least it's inferred
as @system), and anyway, you can't implicitly convert
`immutable(ubyte)[]` to `immutable(char)[]`.
Re: Is there a more elegant way to do this in D?
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 (() @trusted => cast(string)conv)();
}
```
The @trusted lambda can also be replaced with
[std.exception.assumeUnique](https://dlang.org/library/std/exception/assume_unique.html).
Re: Is there a more elegant way to do this in D?
On Thursday, 8 April 2021 at 16:45:14 UTC, Jack wrote:
On Thursday, 8 April 2021 at 04:02:26 UTC, Ali Çehreli wrote:
On 4/7/21 8:57 PM, Brad wrote:
auto a = [1,0,1,1,1,0,1,0,1,1,1,1,0];
I want to come out of this with a string that looks like
this: 101110100
Me, me, me, me! :)
import std;
void main()
{
auto a = [1,0,1,1,1,0,1,0,1,1,1,1,0];
string s = format!"%-(%s%)"(a);
writeln(s);
}
Ali
What does %-%s% do?
nevermind, someone just asked this too[1]
[1]:
https://forum.dlang.org/thread/immypqwvbealjqrvb...@forum.dlang.org
Re: Is there a more elegant way to do this in D?
On Thursday, 8 April 2021 at 04:02:26 UTC, Ali Çehreli wrote:
On 4/7/21 8:57 PM, Brad wrote:
auto a = [1,0,1,1,1,0,1,0,1,1,1,1,0];
I want to come out of this with a string that looks like this:
101110100
Me, me, me, me! :)
import std;
void main()
{
auto a = [1,0,1,1,1,0,1,0,1,1,1,1,0];
string s = format!"%-(%s%)"(a);
writeln(s);
}
Ali
What does %-%s% do?
Re: Is there a more elegant way to do this in D?
On Thursday, 8 April 2021 at 03:57:23 UTC, Brad wrote:
I am trying to take an array and convert it to a string. I
know that Split will let me easily go the other way. I
searched for the converse of Split but have not been able to
locate it. I can think of two brute force methods of doing
this. I found an answer to something similar in the forum and
adapted it - but it is so much code for such a simple procedure:
```d
import std;
void main()
{
auto a = [1,0,1,1,1,0,1,0,1,1,1,1,0];
string b = to!string(a.map!(to!string)
.chunks(a.length)
.map!join);
string f = b[2..b.length-2]; //needed to strip the first
two and las two characters
writeln(f);
}
```
I want to come out of this with a string that looks like this:
101110100
Thanks in advance.
```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 (() @trusted => cast(string)conv)();
}
```
