From: "Mariusz Pękala" <skoot@...>
Date: 2007-06-02T00:03:25+09:00
Subject: Re: Introducing the "it" keyword

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On 2007-06-01 22:52:31 +0900 (Fri, Jun), Brian Candler wrote:
> On Fri, Jun 01, 2007 at 10:45:33PM +0900, Jacob Burkhart wrote:
> > The point of enabling something like with:a(v+1){ ... } in addition to
> > with(v+1){ |a| ...} is simply a proposal in answer to the original
> > proposition about 'it':
> > return it if |v+1| < 10
> >=20
> > something like:
> >=20
> > return it if with:it(v+1) < 10
> >=20
> > return a if with:a(v+1) < 10
> >=20
> > return a,b if ( with:a(v+1) + with:b(x*y) ) < 10
>=20
> But if you're going to label them anyway, then why not write
>=20
>    return a,b if ((a =3D v+1) + (b =3D x*y)) < 10

The whole discussion started because this code does not work in current
ruby parser rules.

In the part 'return a,b' "a" and "b" are treated as method calls, but
in 'if ((a =3D v+1) + (b =3D x*y)) < 10' they are treated as local variable=
s.

If you try to execute this line (use irb) you will get error
'NameError: undefined local variable or method `a' for main:Object'

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