- provide a plain stream() method on messageStream to reduce reliance
on casting operators and slightly opaque operator()() calls etc
- support alternative stream for messageStream serial output.
This can be used to support local redirection of output.
For example,
refPtr<OFstream> logging; // or autoPtr, unique_ptr etc
// Later...
Info.stream(logging.get())
<< "Detailed output ..." << endl;
This will use the stdout semantics in the normal case, or allow
redirection to an output file if a target output stream is defined,
but still effectively use /dev/null on non-master processes.
This is mostly the same as this ternary
(logging ? *logging : Info())
except that the ternary could be incorrect on sub-processes,
requires more typing etc.
ENH: use case-relative names of dictionary, IOstream for FatalIOError
- normally yields more easily understandable information
c9333a5ac8