custom opCmp for array sort

[New]

Thanks very much indeed for your help. The version posted does work. Unfortunately I won't be able to use D for my project, this bug has scared the management, D is still a moving target. I will have to wait until it is more stable.

Cheers.


Gide Nwawudu Wrote:

> On Fri, 28 Nov 2008 13:58:28 -0500, Kagamin <spam at here.lot> wrote:
> 
> >just found it accidentally
> >http://d.puremagic.com/issues/show_bug.cgi?id=1309
> 
> Yep, this issue prevents Path.opCmp from being called. The version
> below works.
> 
> 
> import std.string: find, cmp;
> import std.stdio: writefln;
> import std.algorithm : sort;
> 
> struct Path {
>     string thePath;
> 
>     int opCmp(Path other) {
>     	writefln("Path.opCmp");
>         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("/002=/other_dir"): ["aa","bb","cc","dd"],
>         Path("/001"): ["aa","bb","cc","dd"],
>         Path("/002=/hello") : ["aa","bb","cc","dd"]
>     ];
>     
>     Path[] myPaths = contents.keys.dup;
>     //myPaths.sort; // Does not call Path.opCmp
>     sort(myPaths); // calls Path.opCmp
> 	
>     foreach (item; myPaths)
>         writefln(item.thePath);
> }