If Perl were a functional programming language, I would
my @twice= map $doubler->($_), @list;
my @thrice= map $tripler->($_), @list;
to be easier to write than this:
my @twice= map 2*$_, @list;
my @thrice= map 3*$_, @list;
I never said Perl doesn't let you use functional programming
techniques (in fact, I said the opposite).
Perl just has a preference for non-functional techniques.
map is one example. If you happen to have a closure,
then map requires you to write more code. If
Perl were a functional programming language, then you'd
probably have to create a closure if you had a code block
that you wanted to use with map.
(but my friends call me "Tye")