Function getopts::optflag
[−]
[src]
pub fn optflag(short_name: &str, long_name: &str, desc: &str) -> OptGroup
🔬 This is a nightly-only experimental API. (rustc_private
)
use the crates.io getopts
library instead
Create a long option that is optional and does not take an argument.
short_name
- e.g."h"
for a-h
option, or""
for nonelong_name
- e.g."help"
for a--help
option, or""
for nonedesc
- Description for usage help