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Chapter 4. Subroutines > Item 44. Avoid using @_ directly unless you have to
Item 44. Avoid using @_ directly unless you have to
Unlike many programming languages, Perl has no built-in support for named or “formal” parameters. The arguments to a subroutine are always passed in via a single array variable called @_. It is up to the author of the subroutine to give the arguments names and check them for consistency.
In general, you should always start off a subroutine by copying its arguments and giving them names. The preferred method is to use my:
