Squeak streams only work on Array and String instances. The power of objects ;-) Lukas On Saturday, April 11, 2009, Oscar Nierstrasz <oscar@iam.unibe.ch> wrote:

Can anyone explain to me why this works fine:

((WriteStream on: (Array new)) nextPut: #foo) contents.

but this doesn't?

((WriteStream on: (OrderedCollection new)) nextPut: #foo) contents.

The debugger shows that WriteStream>>nextPut: invokes WriteStream>>pastEndPut: which invokes at:put: on the collection.

This is ok for an array, but not for an OrderedCollection, as OrderedCollection>>at:put: explicitly states it cannot be used to append stuff to the end of the collection.

Is it a bug in WriteStream that it sends at:put:, or does it just not make sense to have a WriteStream on an Ordered Collection?

(This is related to the split and join methods -- because of this limitation, an OrderedCollection cannot be used as a joiner, it seems.)

- on

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-- Lukas Renggli http://www.lukas-renggli.ch

On Sat, Apr 11, 2009 at 7:39 PM, Oscar Nierstrasz <oscar@iam.unibe.ch> wrote:

Can anyone explain to me why this works fine:

((WriteStream on: (Array new)) nextPut: #foo) contents.

but this doesn't?

((WriteStream on: (OrderedCollection new)) nextPut: #foo) contents.

You should have listened when I presented Nile at ESUG some years ago :-) -- Damien Cassou http://damiencassou.seasidehosting.st