Yes, there is a difference, use use and not require

should be documented in perlsub

if you use require, you'll need to use a forward declaration 

$ perl -le "sub f($$@@){warn qq{@_}} f(@ARGV,@ARGV,@ARGV); " 1 2 3 4 5
5 5 1 2 3 4 5 at -e line 1.

## simulate "require"
$ perl -le " eval q{sub f($$@@){warn qq{@_}}}; f(@ARGV,@ARGV,@ARGV); "
+ 1 2 3 4 5
1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 at (eval 1) line 1.

## forward/early/prototype declaration
$ perl -le " sub f($$@@); eval q{sub f($$@@){warn qq{@_}}}; f(@ARGV,@A
+RGV,@ARGV); " 1 2 3 4 5
5 5 1 2 3 4 5 at (eval 1) line 1.

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<Reveal this spoiler or all in this thread>

In reply to Re: Any difference between use and require regarding honoring prototype defined for sub? (prototype) by Anonymous Monk
in thread Any difference between use and require regarding honoring prototype defined for sub? by stewart_lee

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