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Postings from February 2004
>>>>> "JG" == Joe Gottman <jgottman@carolina.rr.com> writes:
JG> How do you decide whether a key-extractor block returns number? Do you
JG> look at the signature, or do you simply evaluate the result of the
JG> key-extractor for each element in the unsorted list? For example, what is
JG> the result of the following code?
JG> sort {$_.key} (1=> 'a', 10 => 'b', 2 =>'c');
JG> There is nothing in the signature of the key-extractor to suggest that
JG> all the keys are numbers, but as it turns out they all are. Will the sort
JG> end up being numerical or alphabetic?
my take is that either <=> or cmp (my pref) would be the default
comparator. if you want to force one, you need to use prefix ~ or + or
int.
oh, another reason to make cmp the default is BACKWARDS COMPATIBILITY!
we have support now for the old simple @sorted = sort @unsorted syntax
so the cmp should still be the default.
hey, i am remembering p6 syntax now! but give me a week and i will
forget it again :)
uri
--
Uri Guttman ------ uri@stemsystems.com -------- http://www.stemsystems.com
--Perl Consulting, Stem Development, Systems Architecture, Design and Coding-
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