|
| Debug.Trace | | Portability | portable | | Stability | provisional | | Maintainer | libraries@haskell.org |
|
|
|
|
|
| Description |
| The trace function.
|
|
| Synopsis |
|
|
|
|
| Tracing
|
|
| putTraceMsg :: String -> IO () |
| putTraceMsg function outputs the trace message from IO monad.
Usually the output stream is System.IO.stderr but if the function is called
from Windows GUI application then the output will be directed to the Windows
debug console.
|
|
| trace :: String -> a -> a |
| When called, trace outputs the string in its first argument, before
returning the second argument as its result. The trace function is not
referentially transparent, and should only be used for debugging, or for
monitoring execution. Some implementations of trace may decorate the string
that's output to indicate that you're tracing. The function is implemented on
top of putTraceMsg.
|
|
| traceShow :: Show a => a -> b -> b |
Like trace, but uses show on the argument to convert it to a String.
traceShow = trace . show
|
|
| Produced by Haddock version 2.4.2 |
