Hi, I'm a C/C++ programmer who is learning Perl. I'm reading several Perl books in parallel. They seem to have different preference about if function parameters are needed. So I'm seeking the opinions from the Perl experts here.

sub func($$$){ ... }
vs.
sub func{ }

The book "Perl for C Programmers" suggests you always define parameters. In page 136, it says "By using a parameter specification, you give Perl the capability to do valuable parameter checking. Leaving out the parameter specification, an you invite chaos."

In other books like "SAMs Teach Yourself Perl in 24 Hours" and "Learning Perl" (O'REILLY) never mentioned the existence of defining parameters. All examples are using "sub func{" style. E.g. I didn't know one could do something like "sub func($$$)" after reading these 2 books... until I read the book "Perl for C Programmers".

Which way is the common practice in Perl world? Thanks.

In reply to What's the better Perl style? Define parameters or not? by pureHeart

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