GHC certain *could* do this, but it's arguably not the right thing to do.
For performance, the operating system buffers writes until it is ready to
write large chunks at a time. If you do not want this behavior, change the
buffering mode from its default.
- Phil
On Feb 8, 2008 5:07 PM, Jonathan Cast
On 8 Feb 2008, at 4:50 PM, Brandon S. Allbery KF8NH wrote:
On Feb 8, 2008, at 19:41 , Philip Weaver wrote:
Your "gsi> " is buffered because there's no newline at the end. To flush the buffer and force it to be printed immediately, use 'hFlush' from the System.IO library, or use 'hSetBuffering' from that same library: http://haskell.org/ghc/docs/latest/html/ libraries/base/System-IO.html
I believe you can observe the same behavior in C.
Most C stdio libraries in my experience have extra code in the functions that read stdin to flush stdout first, specifically because of lazy people who don't pay attention to buffering.
Why can't GHC implement the same thing?
jcc
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