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Postings from November 2016
On Sun, Nov 13, 2016 at 02:52:49PM +0100, Aaron Crane wrote:
> I've just pushed a branch arc/smoke-me/signature-introspection,
> containing an initial implementation of introspection for core
> subroutine signatures.
If code gets to introspect a subroutine signature, it's no longer
the case that:
sub some_sub ($foo, $bar, $baz) {
...
}
is just a programmer friendly way of writing
sub some_sub {
my ($foo, $bar, $baz) = @_;
...
}
it suddenly becomes more. It becomes part of the API. Changing the
name of a variable may break some code elsewhere. Variables which
should be lexical, aren't.
I really like subroutine signatures. But if that means that I'll have
to a deprecation cycle just because I want to rename a variable which
ought to be internal, I might as well not even start using signatures.
Abigail
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