Yes. Assuming you want to keep the overkill of a function, you could either change the relevant line to:

sub f{ return $_ + 1 };

or pass the $_ as an argument to the function:

use strict; use warnings;
sub f{ return $_[0] + 1 };
my @a = (1, 2, 3);
print join " ", map (f($_), @a);

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I have added the join because you like functional programming. But the more common way to do such things is illustrated in the following Perl one-liner:

$ perl -e 'print join " ", map {$_ + 1} 1..4'
2 3 4 5

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Talking of functional programming, note that the block of code after the map (the {$_ + 1} part) can be regarded as an anonymous function being applied by map onto each input element.

In reply to Re^3: map sub to list? by Laurent_R
in thread map sub to list? by pldanutz

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