On Tue, Sep 11, 2012 at 11:11:11PM +0200, Carl Mäsak wrote:
> Nicholas (>):
> > Where in the synopses (or other documents) does it explain why these two
> > are different?
> >
> > $ ./perl6 -e 'sub foo {state @a = (3, 4); say ++@a[0];}; foo; foo;'
> > 4
> > 5
> > $ ./perl6 -e 'sub foo {(state @a) = (3, 4); say ++@a[0];}; foo; foo;'
> > 4
> > 4
>
> S03:4912. "Each declarator can take an initializer following an equals
> sign (which should not be confused with a normal assignment, because
> the timing of the initialization depends on the natural lifetime of
> the container, which in turn depends on which declarator you use)."
Thanks, but if I read that I wouldn't make this jump from it:
> In other words, the parens turn the special equals sign into normal
> assignment again.
(which I'm fine with, as a reason. Although my mental model of it was
"When it's a statement, it's special, with an implied phaser block.
If it's part of an expression, however trivial, it can't be special")
So I guess my next question is "where is normal assignment explained?"
Specifically, the part that would explain that you can put C<my> or C<our>
or similar within the list on the left of the C<=>.
"normal assignment" seems to be term favoured by other parts of the synopses
to describe what they are *not*. But doesn't seem to be easy to find in
itself - ie what it *is* :-)
Nicholas Clark
