stream: improving error msg for stream
Checklist
-
make -j8 test
(UNIX), orvcbuild test nosign
(Windows) passes -
tests and/or benchmarks are included -
documentation is changed or added -
commit message follows commit guidelines
Affected core subsystem(s)
- stream
Description of change
- Improving error msg when
Transform._transform()
is not implement - Improving error msg when
Readable._read()
is not implement - Removing extra word for error msg when
Writable._write()
is not implemented