Perl provides a simple mechanism for specifying subroutine argument types called prototypes. Prototypes do not affect functions defined using the & character. Furthermore, the perlfunc manpage [Wall 2011] states:
Method calls are not influenced by prototypes either, because the function to be called is indeterminate at compile time, since the exact code called depends on inheritance.
...
Tool | Diagnostic |
|---|---|
Perl::Critic | Subroutines::ProhibitSubroutinePrototypes |
Bibliography
| [Conway 052005] | "Prototypes," p. 194 |
| [CPAN] | Elliot Shank, Perl-Critic-1.116 Subroutines::ProhibitSubroutinePrototypes |
| [Wall 2011] | perlsub |
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