Re: map grep and sort

[davido]

Probably beyond the scope of "the basics", but List::Util::reduce sure is handy too sometimes. And although you have to load a module to use it, that module is part of the core Perl distribution.

[tobyink]

See also:

• List::MoreUtils part (see Unusual sorting requirements; comparing three implementations.)
• List::MoreUtils all, any, none
• List::Util first
• reverse

Also worth noting that map's block is called in list context so can return zero or more items.

[coyocanid]

That is a very good and important point. Map can generate hashes because of this. I will add that fact to the above.