[Newbies] using collect on a ReadStream
Oscar Nierstrasz
oscar.nierstrasz at gmail.com
Tue Oct 30 07:27:08 UTC 2007
Strange. I do not see these methods supported by ReadStream in my
image.
I only see 13 implementors of #collect:
What does your implementation of ReadStream>>collect: say?
Oscar
On Oct 30, 2007, at 8:20, Norbert Hartl wrote:
>
> On Tue, 2007-10-30 at 08:03 +0100, Oscar Nierstrasz wrote:
>> Hi Norbert,
>>
>> Streams don't support the collection protocols. You can convert a
>> stream to a collection by sending #contents to the stream:
>>
>> stream := (ReadStream on: #( #(#a #b) #(#b #c))).
>> stream contents collect: [:each| 'k',each first] --> #('ka' 'kb')
>>
>> Is that what you want?
>>
> Sure, it works :) What I do not understand is that a lot of the
> collection protocol is in ReadStream. It has detect: select:
> collect: includes: ... What is it for?
>
> thanks,
>
> Norbert
>
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