Relevant recent discussion: How Are Attributes Useful? by Limbic~Region.

This RPC article on perl.com talks about building a list of externally-callable functions by prefixing those subroutines with (for example) 'r_'. Then looping over the package glob entries to find those subroutines and then mapping subroutine name (e.g.) do_this to r_do_this in the symbol table.

Why not use subroutine attributes instead, and search for those?

sub do_this :callable {
    ...
}

[download]
Strikes me as much nicer than: 
sub r_do_this {
    ...
}

[download]

In reply to A useful use of Attributes? by fireartist

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