I knew that someone would find this loophole ;)

Well, it would not exactly "fail", it would just ignore the cache. Perl 5.10 has help for us:

my $result = $cache{$input} //= function($input);

[download]

Of course, there might still be the case where the function returns undef or a list or depends on the context. Before conjuring up a perfect solution that honours all special cases, I'd better let you use Memoize as recommended above :)

In reply to Re^4: A perl buffer by betterworld
in thread A perl buffer by leonidlm

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