Name
keys
Synopsis
keys %hash
Description
Returns a list consisting of all the keys of the
named hash.
The keys are returned in an apparently random order, but it is the
same order that either the values or each function
produces (assuming
that the hash has not been modified between calls).
In scalar context, keys returns the number of elements of the
hash (and resets the each iterator).
keys can be used as an lvalue to increase the number of hash
buckets allocated for the hash:
keys %hash = 200;
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