getOpt is:exact
Process the command-line, and return the list of values that matched
(and those that didn't). The arguments are:
- The order requirements (see ArgOrder)
- The option descriptions (see OptDescr)
- The actual command line arguments (presumably got from
getArgs).
getOpt returns a triple consisting of the option arguments, a
list of non-options, and a list of error messages.
Process the command-line, and return the list of values that matched
(and those that didn't). The arguments are:
- The order requirements (see ArgOrder)
- The option descriptions (see OptDescr)
- The actual command line arguments (presumably got from
getArgs).
getOpt returns a triple consisting of the option arguments, a
list of non-options, and a list of error messages.
Changes: The list of errors will contain at most one entry, and
if an error is present then the other two lists will be empty.
Given one or more long or short option names, read the rightmost value
of this option from the command line arguments. If the value is
missing raise an error. Concatenated short flags (-a -b written as
-ab) are not supported.
Get the current value of an option. Throw an exception if the option
is not currently set.