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