std.algorithm - notes

[bearophile]

bearophile:
> - max/min: nicely done. A max/min of iterables (without the need to use reduce) is useful too (even with 'key' function, see my d libs).

Nevermind, I'll not use them, and I'll keep using my max/min functions. This prints 10:

void main() {
    int a = -10;
    uint b = 10;
    writefln( min(a, b) );
}

The result type here must be a long, it's the only one that gives the right result whenever a,b of type int,uint.

Related problem: my abs() functions are like this (and I don't like them much still), they aren't templated:

int abs(int n) {
    assert(n != int.min, "abs(int.min) == int.min");
    return (n >= 0) ? n : -n;
}

Such bug catching show why I think multi-precision integers are useful for far more than just cryptography: they help avoid many bugs.

Bye,
bearophile