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Postings from April 2022
2022-4-4 19:27 Dagfinn Ilmari Mannsåker <ilmari@ilmari.org> wrote:
> Yuki Kimoto <kimoto.yuki@gmail.com> writes:
>
> > I ask a question about yield_true feature.
> >
> > This example seems to be adding "1;" to the end of the file scope.
> >
> > Can yield_true feature be implemented actually as a file scope, not as a
> > global scope?
>
> All features (as in feature.pm) are lexically scoped, the file scope is
> just the top-level lexical scope. This implies that doing `use feature
> 'yield_true';` in a non-toplevel scope, i.e. inside a sub or other
> block, has no effect, since the feature will not be enabled anymore at
> the end of the file scope.
>
> - ilmari
>
Thank you for your reply.
Can I understand the yield_true feature as the following example?
{
use feature 'yield_true';
{
print "Hello';
}
}
is same as
{
{
print "Hello';
}
1;
}
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