| //! How to use `arg_enum!` with `StructOpt`. |
| //! |
| //! Running this example with --help prints this message: |
| //! ----------------------------------------------------- |
| //! structopt 0.3.25 |
| //! |
| //! USAGE: |
| //! enum_in_args <i> |
| //! |
| //! FLAGS: |
| //! -h, --help Prints help information |
| //! -V, --version Prints version information |
| //! |
| //! ARGS: |
| //! <i> Important argument [possible values: Foo, Bar, FooBar] |
| //! ----------------------------------------------------- |
| |
| use clap::arg_enum; |
| use structopt::StructOpt; |
| |
| arg_enum! { |
| #[derive(Debug)] |
| enum Baz { |
| Foo, |
| Bar, |
| FooBar |
| } |
| } |
| |
| #[derive(StructOpt, Debug)] |
| struct Opt { |
| /// Important argument. |
| #[structopt(possible_values = &Baz::variants(), case_insensitive = true)] |
| i: Baz, |
| } |
| |
| fn main() { |
| let opt = Opt::from_args(); |
| println!("{:?}", opt); |
| } |