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Postings from August 2012
On Fri, Aug 31, 2012 at 9:48 AM, Johan Vromans <jvromans@squirrel.nl> wrote:
> Darin McBride <dmcbride@cpan.org> writes:
>
> > Disagreed. The shell's case statement ...
>
> The shell (what 'the' shell??) only works with strings, creating a whole
> different (and much simpler) playground for comparison and matching.
>
Whereas Perl (at least Perl 5) usually forces a context.
I keep thinking that's what Perl ought to do here. Rather than have a
single C<when> do three different things depending on the "type" of the
match value, have three different, context-forcing case introducers. At
which point we could relatively easily bundle several. Modulo nomenclature:
numwhen ($current) { ... }
numwhen (0) { ... }
numwhen (1, -1) { ... }
default { ... }
I guess we can even handle changing arrays, if we want to:
strwhen (@pre_defined) { ... }
strwhen (@defined) { ... }
strwhen (@seen) { ... }
default ( ... }
They rather need to be parsed as three different structures in either
case (or overload::Constant will bite us), so why not make them three
different keywords?
Eirik
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