OptionParser | R Documentation |
This function is used to create an instance of a parser object
which when combined with the parse_args
, make_option
, and add_option
methods is very useful for parsing options from the command line.
OptionParser( usage = "usage: %prog [options]", option_list = list(), add_help_option = TRUE, prog = NULL, description = "", epilogue = "", formatter = IndentedHelpFormatter )
usage |
The program usage message that will printed out if
|
option_list |
A list of of |
add_help_option |
Whether a standard help option should be automatically
added to the |
prog |
Program name to be substituted for |
description |
Additional text for |
epilogue |
Additional text for |
formatter |
A function that formats usage text.
The function should take only one argument (an |
An instance of the OptionParser
class.
Trevor Davis.
Python's optparse
library, which inspired this package,
is described here: https://docs.python.org/3/library/optparse.html
parse_args
make_option
add_option
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