[squeak-dev] The Trunk: Collections-nice.576.mcz
commits at source.squeak.org
commits at source.squeak.org
Thu Jul 24 20:36:56 UTC 2014
Nicolas Cellier uploaded a new version of Collections to project The Trunk:
http://source.squeak.org/trunk/Collections-nice.576.mcz
==================== Summary ====================
Name: Collections-nice.576
Author: nice
Time: 24 July 2014, 10:36:08.474 pm
UUID: 1ec2cb3f-f168-4b7b-9ec1-57ae79508f5d
Ancestors: Collections-eem.575
Convert a WriteStream into a ReadStream.
Beware, this version is optimized to avoid a copy, but is sharing some state.
Thus:
s := WriteStream on: String new.
self writeSomethingOn: s.
self readSomethingFrom: s readStream.
is a good replacement for:
s := ReadWriteStream on: String new.
self writeSomethingOn: s.
self readSomethingFrom: s reset
But avoid overwriting like this:
w := String new writeStream.
self writeSomethingOn: w.
r := w readStream.
self writeSomethingElseOn: w reset.
self compare: r to: w readStream.
=============== Diff against Collections-eem.575 ===============
Item was added:
+ ----- Method: WriteStream>>readStream (in category 'converting') -----
+ readStream
+ "Answer a readStream on my contents truncated to current position.
+ Beware, the readStream shares the contents, so it will be modified if I'm written backward."
+ readLimit := readLimit max: position.
+ ^ReadStream on: collection from: (initialPositionOrNil ifNil: [1]) to: position!
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