optparse_flag {W4MRUtils}

optparse_flag - define a command parameter as a trigger

Description

To be used with optparse_parameters. This function tells the provided parameter is a trigger (logical - TRUE/FALSE). When the trigger parameter is not provided in the command line, the value is FALSE. Otherwise, it is TRUE.

Usage

optparse_flag(help = "No documentation yet.", short = NULL, default = FALSE)

Arguments

help

• The help string to display when –help is triggered

short

• The shortcut fir this parameter. For example for a –output param, we could use optparse_flag(short = "-o", ...) to set the "-o" shortcut.

default

• The default value this parameter will hold.

Value

a list to give to optparse_parameters to build the whole command line parsing tool.

Author(s)

L.Pavot

See Also

optparse_parameters()

Examples

str(optparse_parameters(
  a_parameter = optparse_flag(),
  args = list("--a-parameter")
))