Very strange bug on Streams and probably compiler
Roel Wuyts
Roel.Wuyts at ulb.ac.be
Wed Feb 14 22:16:23 UTC 2007
Sure, I fully agree.
The essence of the discussion boils down whether whether you consider
'foo'
to be a literal or not in the current system.
On 14 Feb 2007, at 14 February/21:59, Alan Lovejoy wrote:
> <Lukas Renggli>
> If we had an immutability bit, that the compiler would set for
> objects in
> the literal array (and with what we could do a lot of other cool
> stuff),
> then people would not run into such problems.
> </Lukas Renggli>
>
> As a principle of language design, literals should be immutable. And
> immutability needs to be independently settable for each named
> instance
> variable, and independently settable for the indexable slots (as a
> group,
> not for each index.) The reason is because some named instance
> variables
> may need to be "caching variables" whose values are lazily computed
> only
> when needed--in fact, such variables may need to be weak references
> so that
> the garbage collector can set them to nil.
>
> --Alan
>
>
>
More information about the Squeak-dev
mailing list
|