custom opCmp for array sort

[New]

Small correction, the code I posted works with  D1.0 but not with D2.0. What do I need to change to make it work with D 2.0?

is it better to use D 2 or D 1? 

sorry for crossposting, I started my questions on the D group but I was instructed to ask here.


thanks


New Wrote:

> Hello,
> 
> I originally posted this question to the wrong group, I am trying here as suggested.
> 
> I am new with D and am stuck with something I hope somebody can help me with it.
> I am trying sort an array of paths which can take the two following forms:
> 
> /usr                ---> normal path
> /bin=/other/bin     ---> a symlink
> 
> When I sort these paths, in the case of symlinks I want to ignore the right hand side and I just use the path before the "=" sign.
> 
> The array docs for DMD 2.0, say that can create a structure and create a opCmp function to cutomise the way sort works. I have tried this but calling .sort does not seem to pick-up my custom opCmp.
> 
> Any help would be very appreciated. I am including the code below
> 
> Thanks a lot
> --------------------------------------------------------------------
> Code cleaned up in d.lang group (my code was a bit messy)
> 
> import std.string: find, cmp;
> import std.stdio: writefln;
> 
> struct Path {
>   string thePath;
> 
>   int opCmp(Path other) {
>     int pos;
>     string a, b;
> 
>     pos = find(this.thePath, "=");
>     if (pos > -1)
>       a = this.thePath[0 .. pos];
>     else
>       a = this.thePath;
> 
>     pos = find(other.thePath, "=");
>     if (pos > -1)
>       b = other.thePath[0 .. pos];
>     else
>       b = other.thePath;
> 
>     return cmp(a, b);
>   }
> }
> 
> void main() {
>   string[][Path] contents = [
>     Path("/BBB=/other_dir"): ["aa","bb","cc","dd"],
>     Path("/AAA"): ["aa","bb","cc","dd"],
>     Path("/BB2=/hello") : ["aa","bb","cc","dd"]
>                             ];
> 
>   foreach (item; contents.keys.sort)
>     writefln(item.thePath);
> }