Re: A little puzzle

[Timon Gehr]

On 09/19/2011 11:20 PM, bearophile wrote:

A tiny puzzle I've shown on IRC. This is supposed to create an inverted array 
of cards, but what does it print instead?

import std.stdio, std.algorithm, std.range;
void main() {
     int[52] cards;
     copy(iota(cards.length - 1, -1, -1), cards[]);
     writeln(cards);
}

Bye,
bearophile

The same as this code, of course!

import std.stdio, std.algorithm, std.range;
void main() {
        int[52] cards;
        for(auto i=cards.length-1,v=0; i>-1; i--, v++) cards[i]=v;
        writeln(cards);
}