Stride

[Ali Çehreli]

On 02/14/2012 12:59 PM, RenatoL wrote:
> mmmhhh.... this is interesting nevertheless i don't understand the
> solution of my problem, and i cannot even understand it's origin:
>
> void main()
> {
>      string s1 = "abcd";
>      s1 = s1[stride(s1,0)..1] ~ 'r' ~ s1[2..$];
>      writeln(s1);
> }
>
> why there is not way i cannot achive "arcd"?

import std.stdio;
import std.utf;

void main()
{
     string s1 = "abcd";

     immutable firstCharStride = stride(s1, 0);
     immutable secondCharStride = stride(s1, firstCharStride);

     auto firstPart = s1[0..firstCharStride];
     auto lastPart = s1[firstCharStride + secondCharStride..$];

     s1 = firstPart ~ 'r' ~ lastPart;
     writeln(s1);
}

Ali