Add ArgumentParser.is_used to discern user-supplied values from defaults #100
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.present returns std::nullopt if the optional argument is not given by the user -- as long as a .default_value is not defined. With a .default_value, .present cannot be used to determine if a value is user-provided or the default. .is_used fills that role and only returns true if the argument was passed by the user. Signed-off-by: Sean Robinson <sean.robinson@scottsdalecc.edu>
p-ranav
approved these changes
Apr 7, 2021
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.present returns std::nullopt if the optional argument is not given by the
user -- as long as a .default_value is not defined. With a .default_value,
.present cannot be used to determine if a value is user-provided or the
default.
.is_used fills that role and only returns true if the argument was passed
by the user.
Signed-off-by: Sean Robinson sean.robinson@scottsdalecc.edu