>>>>> "JF" == Jeremiah Foster <jerem...@jeremiahfoster.com> writes:
JF> # autovivfy a hash with versions of packages
JF> $versions{$package} = [ ] unless exists $versions{$package};
that is MANUALLY vivifying an array. if you just pushed to the slot with
a dereference, that would be autovivifying. only perl can autovivify for
you!
read this to learn more about autovivifying:
http://sysarch.com/Perl/autoviv.txt
JF> Is this an efficient way to do this? Am I using the idiom
JF> correctly? Could I make it more readable? Is my predilection for
JF> map over foreach making this less readable? Or is that only a
JF> question of style?
map in a void context is considered poor coding style. it doesn't have
the storage penalty it used to have but its purpose is still to generate
a list. in a void context it can't do that so you are misleading the
reader. use foreach modifier for this instead.
uri
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