Counting number of keys in a hash.

by sschneid (Deacon)

on Jul 27, 2004 at 19:33 UTC ( [id://377827]=perlquestion: print w/replies, xml )

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sschneid has asked for the wisdom of the Perl Monks concerning the following question:

Is there a 'quick & easy' way to count the number of keys in a hash without creating an (incremental) variable and mapping through it?

-s.

Comment on Counting number of keys in a hash.

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Re: Counting number of keys in a hash. by gaal (Parson) on Jul 27, 2004 at 19:36 UTC
`my $count = keys %hash;`	[reply] [d/l]
Re: Counting number of keys in a hash. by sweetblood (Prior) on Jul 27, 2004 at 19:37 UTC
try $hash_cnt = scalar keys %hash HTH Sweetblood	[reply]
Re^2: Counting number of keys in a hash. by naChoZ (Curate) on Jul 27, 2004 at 22:29 UTC
Thanx from me too. I just had to do this today actually. I figured there was a better way than my quick solution of: `my $counter = 0; $counter++ for keys %hash;` [download] -- "A long habit of not thinking a thing wrong, gives it a superficial appearance of being right." -- Thomas Paine naChoZ	[reply] [d/l]
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