Perl ||= operator for PHP and Javascript
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by zaf
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Published on 2010-05-03T09:42:23Z
Indexed on
2010/05/03
9:48 UTC
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Just been re-introduced to the Perl '||=' operator from the classic Orcish Maneuver example:
keys my %or_cache = @in;
@out = sort {
($or_cache{$a} ||= KEY($a))
cmp
($or_cache{$b} ||= KEY($b))
} @in;
Is this operator available in PHP and Javascript?
And if not, do these two languages allow user defined operators?
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