Is:
wchar[] chars;  // like a: "import core.sys.windows.windows;\nimport std.conv      : to;\n"

Goal:
foreach ( word; chars.byWord )
{
    // ...
}

Iterating chars by Word...
How to ? ( simple, fast, low memory, beauty, perfect )

On 11/12/20 9:14 PM, Виталий Фадеев wrote:
> Is:
> wchar[] chars;  // like a: "import core.sys.windows.windows;\nimport std.conv      : to;\n"
> 
> Goal:
> foreach ( word; chars.byWord )
> {
>      // ...
> }
> 
> Iterating chars by Word...
> How to ? ( simple, fast, low memory, beauty, perfect )

import std.stdio;
import std.algorithm;
import std.uni;

void main() {
  auto s = "Виталий abcçdefgğhı   Фадеев"w;
  auto words = s.splitter;
  words.writefln!"%-(%s\n%)";
}

Note that splitter() is different from splitter!isWhite. The version I used above removes empty parts. (I used multiple spaces in one place but the output contains only three parts.)

Виталий
abcçdefgğhı
Фадеев

Ali

On Friday, 13 November 2020 at 05:14:08 UTC, Виталий Фадеев wrote:
> Is:
> wchar[] chars;  // like a: "import core.sys.windows.windows;\nimport std.conv      : to;\n"
>
> Goal:
> foreach ( word; chars.byWord )
> {
>     // ...
> }

You can make your own range, however look at this function first (second example)
https://dlang.org/phobos/std_algorithm_iteration.html#.splitter

    // 1) might need to cast your wchar[] to wstring first
    // 2) also assumes that 'the word' is separated by whitespace
    foreach( word; chars.splitter(' '))
    {

    }

or this one, which is a bit more smarter about what "the word" means
https://dlang.org/phobos/std_array.html#.split

    import std.array : split;

    wchar[] str = cast(wchar[]) "some random stuff blah blah"w;
    foreach(w; str.split())
    {
        writeln(w);
    }

Anyway in both cases using dmd -vgc flag shows no GC allocations done.

On Friday, 13 November 2020 at 06:42:24 UTC, evilrat wrote:
> On Friday, 13 November 2020 at 05:14:08 UTC, Виталий Фадеев wrote:
>> [...]
>
> You can make your own range, however look at this function first (second example)
> https://dlang.org/phobos/std_algorithm_iteration.html#.splitter
>
>     // 1) might need to cast your wchar[] to wstring first
>     // 2) also assumes that 'the word' is separated by whitespace
>     foreach( word; chars.splitter(' '))
>     {
>
>     }
>
> or this one, which is a bit more smarter about what "the word" means
> https://dlang.org/phobos/std_array.html#.split
>
>     import std.array : split;
>
>     wchar[] str = cast(wchar[]) "some random stuff blah blah"w;
>     foreach(w; str.split())
>     {
>         writeln(w);
>     }
>
> Anyway in both cases using dmd -vgc flag shows no GC allocations done.

Thanks, Ali. Thanks, Evilrat.
I taste it now: https://run.dlang.io/is/HlSFVY

On Friday, 13 November 2020 at 06:52:38 UTC, Виталий Фадеев wrote:
> On Friday, 13 November 2020 at 06:42:24 UTC, evilrat wrote:
>> [...]
>
> Thanks, Ali. Thanks, Evilrat.
> I taste it now: https://run.dlang.io/is/HlSFVY


Latest: https://run.dlang.io/is/dfrcYj

On Friday, 13 November 2020 at 07:23:13 UTC, Виталий Фадеев wrote:
> On Friday, 13 November 2020 at 06:52:38 UTC, Виталий Фадеев wrote:
>> On Friday, 13 November 2020 at 06:42:24 UTC, evilrat wrote:
>>> [...]
>>
>> Thanks, Ali. Thanks, Evilrat.
>> I taste it now: https://run.dlang.io/is/HlSFVY
>
>
> Latest: https://run.dlang.io/is/riY5BI

Splitted on each White space...

Thanks. I going to the Lexers/Parsers world.