ยค teeF

An identity fudget that copies messages to the standard error output

Types

teeF :: (b -> String) -> String -> F b b

Synopsis

teeF showf prefix

Description

teeF is an identity fudget which as a side effect prints the messages that pass through it on the standard error output. This can be helpful when debugging fudgets.

Arguments

showf :: b -> String
A show function.
prefix :: String
A string that the messages are prefixed with.

See Also

idF, spyF, showCommandF, trace in the hbc_library module NonStdTrace.