Larry Wall skribis 2005-07-11 18:29 (-0700):
> is that we simply outlaw .foo notation at *compile* time in those
> scopes where we know (at compile time) that $_ and $?SELF diverge.
> In such a scope you *must* specify $_ or $?SELF (or equivalent).
What?
That makes having a default at all useless, it makes moving code without
breaking it impossible again, it requires a lot of extra typing with
shifted keys, it adds an arbitrary looking exception, and it is wildly
undwimmy and impractical, and thus unperlish by every definition I know.
This is, by far, the silliest solution for this problem that I have seen
proposed, because it is a combination of almost all the cons, and comes
at a time in which all the pros and cons of other solutions are already
known and discussed.
> That's the default, and I'm not changing my mind ever again, at least
> till next week.
I can wait till next week.
> use self "this";
> use self "self";
> use self "o";
> use self "./";
> use self "";
Any of these must be the default, and frankly I do not care much which
one it is, if that means the current non-solution goes away.
Obviously, use self "" is the least attractive of these, but I would
still prefer it to outlawing .foo.
If the default isn't sane, the language isn't sane. That there is a
pragma to change things, should never be a reason to stop picking good
defaults.
> Yes, this is possibly a hazard for cut-n-pasters. But then,
> you weren't supposed to be cutting-n-pasting anymore, were you?
No, but I do refactor. I do add loops and methods around existing code.
I do use for (or given in p6) to topicalize, to be able to type LESS.
In Perl 5, I really hate
for ($object) {
$_->method(...);
$_->method(...);
$_->method(...);
}
And the Perl 6 equivalent until your revelation,
given $object {
.method(...);
.method(...);
.method(...);
}
was the perfect solution. Killing off a useful and much used idiom even
before the first release is quite an accomplishment.
Disallowing .method here means a huge step back in time. Back to
$_.method or $object.method.
Juerd
--
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