Initializing values in associative arrays
bearophile
bearophileHUGS at lycos.com
Thu Nov 29 11:23:59 PST 2012
Joseph Rushton Wakeling:
> How safe is it to rely on doing something like this:
>
> uint[size_t] x;
>
> foreach(i; iota(0, 10))
> x[i]++;
>
> foreach(i; iota(5, 15))
> x[i]++;
This is part of the D associative array specs, so in theory it's
safe, but you have to keep this implementation bug in account:
http://d.puremagic.com/issues/show_bug.cgi?id=3825
> I note that the above works even if uint[size_t] is changed to
> real[size_t], which is a surprise, because I'd have assumed
> that everything would come out as nan's.
This is a known AA bug :-( I think that there is not yet a patch
to fix it.
Bye,
bearophile
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