On Tue, Mar 18, 2014 at 10:10 AM, Christophe Demarey <Christophe.Demarey@inria.fr> wrote:
Why arguments should be read only?
They are just temporary variables with an initial value.

Read the blue book. �It was a decision of the language designers to forbid assignment to arguments to allow debugging. �The assignment to block arguments is a side-effect of the old BlockContext implementation of blocks where block arguments were mapped onto temporary variables of the home context. �It is an anachronism and should be forbidden also.

2014-03-18 15:45 GMT+01:00 Nicolai Hess <nicolaihess@web.de>:
similiar to issue 12419� block arguments should be read only


2014-03-18 15:21 GMT+01:00 Camille Teruel <camille.teruel@gmail.com>:

Indeed, I can compile:

C>>foo: arg
� � � � ^ arg := 3

And 'C new foo: 1' returns 3...


On 18 mars 2014, at 15:16, Igor Stasenko <siguctua@gmail.com> wrote:

> extent: newExtent
>
> � � vertical
> � � � � ifTrue: [ newExtent := self �defaultWidth @ newExtent y ]
> � � � � ifFalse: [ newExtent := newExtent x @ self �defaultWidth ].
>
> � � super extent: newExtent
>
> Can you verify it? Arguments should be not assignable.
>
> --
> Best regards,
> Igor Stasenko.








--
best,
Eliot