Re: bug in std.algorithm.sort ??

[Andrei Alexandrescu]

A.M. wrote:
import std.string;
import std.array;
import std.algorithm;
void main()
{
        string[] sa = ["TOM","JOE","TOM4","TOM12","TOM6"];
        sort!(comp)(sa);
}
bool comp(string x, string y)
{
        string[] s = [x,y];
        return isSorted(s);
}

this code compiles find, but when run gives the following error:

core.exception.asserter...@./../../src/phobos/std/array.d(210): Attempting to 
fetch the front of an empty array

I'm using dmd2.030
same happens with dmd2.029

is that a bug?

The comp function must be an ordering function of the likes of "<", and 
yours is a very expensive way to compute x <= y. Sort does not work with 
"<=", only with "<".


Andrei