Peter Uhnák wrote on 23. 6. 2018 15:39:
Hi,
I'm starting to familiarize myself with new streams, and one thing I've
noticed is the removal of #lineEndConvention (which I use all the time).
So a statement like this
aFile writeStreamDo: [ :stream |
stream lineEndConvention: #lf.
stream << '...'> ].
has to be written like so
aFile writeStreamDo: [ :rawStream | |stream|
stream := (ZnNewLineWriterStream on: rawStream) forLf.
stream << '...'
].
which feels very messy because I am mixing writing with the
configuration. And I don't even take account for buffered/encoded
decorators. Plus it increases the incidental complexity -- I need
another variable, and I can accidentally write to the wrong stream, etc.
Would a method like #writeStream:do: (or #writeStreamTransform:do:) make
sense? E.g.
aFile writeStreamTransform: [ :stream | (ZnNewLineWriterStream on:
stream) ] do: [ :stream |
stream << '...'
]
aFile writeStreamDo: [ :rawStream |
(ZnNewLineWriterStream on: rawStream) in: [ :stream |
stream << '...' ] ].
As for transformation, I'd go for some more generic (functional?)
approach like:
aFile writeStreamDo: ([:x | ZnNewLineWriterStream on: x] pipe: [
:stream |
stream << '...' ]).
Herby
To separate the composition from the usage?
Thanks,
Peter
