Re: Using Shift with Parameters in a subroutine

The new signatures are documented in perlsub since 5.20, under Signatures.

The same, or a rather similar functionality can be enabled employing a source filter, but I think that the failure modes of a source-filter (introducing hard to debug syntax errors) are not really worth the nicer syntax for older Perl versions.

Comment on Re: Using Shift with Parameters in a subroutine

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Re^2: Using Shift with Parameters in a subroutine by RonW (Parson) on Oct 20, 2014 at 17:01 UTC
FYI: Method::Signatures (and a few others) don't use source filters. Instead they use the keyword API introduced in Perl 5.14.	[reply]
Re^3: Using Shift with Parameters in a subroutine by tobyink (Canon) on Oct 20, 2014 at 21:23 UTC
FYI: Method::Signatures doesn't use the keyword API introduced in Perl 5.14. Instead, it uses Devel::Declare. Ditto MooseX::Method::Signatures and Method::Signatures::Simple. Kavorka, Function::Parameters, and Fun use the Perl 5.14 keyword API. toby döt ink	[reply]