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Postings from October 2015
On Wed, Oct 7, 2015 at 4:24 AM, Dave Mitchell <davem@iabyn.com> wrote:
> 2. Make when's behaviour entirely dependent on the *compile-time* class
> of of its arg. In particular, make 'when (FOO)' have exactly the following
> behaviours:
>
> FOO condition evaluates to
> -------------- ----------------------
> literal undef !defined($_)
> numeric const $_ == FOO
> literal pattern $_ ~= FOO
> all else $_ eq FOO
>
> 3. when { FOO } has condition FOO.
>
> For example:
>
> use constant ME => "davem";
> when (ANS) # equivalent to when { $_ == 42 }
>
According to your table, shouldn't that be "when { $_ eq ANS }"? ANS could
have any value, so when (ANS)" is no different than "when ($x)". There's no
"compile-time class" available to study.
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