Returns the embedded result.
Returns the embedded result.
Functional composition of ParseResults.
Functional composition of ParseResults.
the function to be lifted over this result
f applied to the result of this ParseResult, packaged up as a new ParseResult
Partial functional composition of ParseResults.
Partial functional composition of ParseResults.
the partial function to be lifted over this result
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)
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.
A common super-class for unsuccessful parse results.