foreach (x; a .. b) and foreach_reverse (x; a .. b) should be disallowed for floats
schveiguy at yahoo.com
Mon May 18 06:46:15 PDT 2009
On Sun, 17 May 2009 20:28:24 -0400, Andrei Alexandrescu
<SeeWebsiteForEmail at erdani.org> wrote:
> foreach (x; 1.0 .. 4.1) writeln(x);
> foreach_reverse (x; 1.0 .. 4.1) writeln(x);
> This sucks. foreach with interval for floating-point types should be
foreach_reverse sucks in its own right, while you're looking for stuff to
get rid of, I think it can be done better.
foreach(x; 4 .. 1 ) should do a reverse interval (and looks way more
foreach(x; array.reverse) should iterate in reverse.
for classes, using a method called reverse should work fine:
Having to implement opApplyReverse is rediculous, and having a keyword
like foreach_reverse is rediculous. Reverse isn't the only interesting
iteration pattern, so why focus a whole keyword and syntax on that?
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