A base class for parser results. A result is either successful or not (failure may be fatal, i.e., an Error, or not, i.e., a Failure). On success, provides a result of type T which consists of some result (and the rest of the input).
a function that takes the same argument as f and produces an error message to explain why f wasn't applicable (it is called when this is the case)
f
the partial function to be lifted over this result
Attributes
Returns
if f f is defined at the result in this ParseResult, f applied to the result of this ParseResult, packaged up as a new ParseResult. If f is not defined, Failure.