I've typed a code to enjoy with my library "dcollect", and found non-understandable error:

module main;

import std.stdio;
import dcollect;
import std.string;
import std.conv;

int main(string[] args)
{

    string sentence_x,
    sent_result, token2;
    string[] sentence_tokens;

    writeln(strstring(5,"*")," No tail \"s\" ",strstring(5,"*"));
    writeln;

    write("Compose a line: ");
    sentence_x=strip(readln());

    sentence_tokens=sentence_x.d_strtok(" ,;.:!?\"'");

    foreach(token; sentence_tokens){
        token2=token.strrtrim;
        if(token2[token2.length-1]=='s')
            token2=strdel(token2, token2.length-1,1);
            sent_result~=token2~" ";}

    sent_result.writeln;

	return 0;
}

dcollect library:
https://github.com/pascal111-fra/D/blob/main/dcollect.d

I changed some data types of some functions parameters to "ulong":

string strdel(const string ch, ulong x, ulong l )
{

    string l_ch=ch.strleft(x);
    string r_ch=ch.strright(ch.length-(x+l));

    return (l_ch~=r_ch);

}

string strleft(const string ch, ulong n)
{

    string ch_sub;

    ch_sub=ch[0..n];

    return ch_sub;

}

/************************************/

string strreverse(const string ch)
{

    string ch_rev;

    for(ulong i=ch.length-1; i>=0; i--)
        ch_rev~=ch[i];


    return ch_rev;

}

/*********************************************/

string strright(const string ch, ulong n)
{

    string ch_sub1,
    ch_sub2;

    ch_sub1=strreverse(ch);

    ch_sub2=strleft(ch_sub1, n);

    ch_sub1=strreverse(ch_sub2);

    return ch_sub1;

}

====================

Running screen says:

https://i.postimg.cc/G3YyCmbF/Screenshot-from-2022-07-30-23-23-59.png

On Saturday, 30 July 2022 at 21:24:50 UTC, pascal111 wrote:

Why you don't copy the output instead?

A range violation is the safe error (if bound checking enabled) that is thrown if you access an index of a range or array that is out of bounds. You may try to access an index that is larger than elements in the array.

On Saturday, 30 July 2022 at 21:52:42 UTC, frame wrote:

Because copying the running window contents is not allowed, I couldn't do it in Code::Blocks.

I think you are right.

On Saturday, 30 July 2022 at 22:13:55 UTC, pascal111 wrote:

Not allowed? o.O

Did you try to select the text and insert it via middle mouse button in another window? Those terminals usually copy the text by selection automatically.

On Saturday, 30 July 2022 at 22:17:10 UTC, pascal111 wrote:

I have a suggestion for you. Use modern possibilities instead of applying functions used in the past to the present. For example, in a world with UTF, ordinary string reversing can result in erroneous results.

Also, please don't use pictures, use Markdown instead...

SDB@79

On Saturday, 30 July 2022 at 22:28:52 UTC, frame wrote:

I tried what you said, and also ctrl+c doesn't work, nothing works, I can't copy the contents of this terminal.Now you have two choices, 1) I continue using pictures 2) I stop that and be unable to describe what's happening in the running time.

On Saturday, 30 July 2022 at 22:45:14 UTC, Salih Dincer wrote:

I'm trying, really, to understand modern D features, but I'm from old school, C pure programming and BASIC language, and such languages and styles.

D as it's obvious to all of us is a multi-paradigm language and has so advanced features, even its references, I can't understand 'em well, it's 100% new modern language, but every time I'll learn a new feature of it for that I can't surround all of its techniques at once.

Provide me a free solution better than code::blocks with available gdc compiler I found.