tdpl: partial ordering of functions: conflict error

[Jerome BENOIT]

Hello List:

On my box, the following D source, inspired by the subsection 5.5.2 of tDpl, 
arises a `template conflict':

-----------------------------------------------------------------

T[] find(T, E)(T[] haystack, E needle)
        if (is(typeof(haystack[0] != needle) == bool)) {
        while (haystack.length > 0 && haystack[0] != needle) {
                haystack = haystack[1 .. $];
                }
        return haystack;
        }

TL[] find(TL, TS)(TL[] longer, TS[] shorter)
        if (is(typeof(longer[0 .. 1] == shorter) : bool)) {
        while (longer.length >= shorter.length) {
                if (longer[0 .. shorter.length] == shorter) break;
                longer=longer[1 .. $];
                }
        return longer;
        }

int[] find(int[] longer, int[] shorter) {
        while (longer.length >= shorter.length) {
                if (longer[0 .. shorter.length] == shorter) break;
                longer=longer[1 .. $];
                }
        return longer;
        }

unittest {
        long[] a1 = [ 6, 1, 2, 3 ];
        int[] a2 = [ 1 , 2 ];
        assert(find(a1, a2) == a1[1 .. $]);
        }

void main() {}

-----------------------------------------------------------------

And I cannot figure why :-(

Thanks in advance for any help,
Jerome