Re: To write such an expressive code D

[FG via Digitalmars-d-learn]

On 2015-02-11 at 01:56, bearophile wrote:

Alternative solution closer to the F# code:

import std.stdio, std.algorithm, std.typecons;

int f(T)(T t) if (isTuple!T) {
     return t.predSwitch(
         tuple(0, 0, 0), 0,
         tuple(0, 1, 1), 0,
         tuple(1, 0, 1), 0,
         tuple(1, 1, 0), 0,
         /*else*/ 1);
}

void main() {
     foreach (immutable a; 0 .. 2)
         foreach (immutable b; 0 .. 2)
             foreach (immutable c; 0 .. 2)
                 writefln("%d xor %d xor %d = %d", a, b, c, tuple(a, b, c).f);
}

Why bend over and try to make it F#? Screw the F# guy.
He was cheating with a switch, so why can't we cheat?

foreach(i;0..8)writefln("%d xor %d xor %d = 
%s",!!(i&4),!!(i&2),!!(i&1),"01101001"[i]);

Assimilate this!

Oh wait, you needed a function. OK, here's a function
(and just replace "01101001"[i] with xxor(i&4,i&2,i&1)):

int xxor(int a, int b, int c) {return 
(a&&b&&c)||(!a&&!b&&c)||(!a&&b&&!c)||(a&&!b&&!c);}

If it makes him dislike D even more, great! Mission accomplished. :)