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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:11:28 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:11:28 +0000 |
commit | 94a0819fe3a0d679c3042a77bfe6a2afc505daea (patch) | |
tree | 2b827afe6a05f3538db3f7803a88c4587fe85648 /vendor/clap-3.2.20/examples/tutorial_builder/04_02_parse.rs | |
parent | Adding upstream version 1.64.0+dfsg1. (diff) | |
download | rustc-94a0819fe3a0d679c3042a77bfe6a2afc505daea.tar.xz rustc-94a0819fe3a0d679c3042a77bfe6a2afc505daea.zip |
Adding upstream version 1.66.0+dfsg1.upstream/1.66.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/clap-3.2.20/examples/tutorial_builder/04_02_parse.rs')
-rw-r--r-- | vendor/clap-3.2.20/examples/tutorial_builder/04_02_parse.rs | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/vendor/clap-3.2.20/examples/tutorial_builder/04_02_parse.rs b/vendor/clap-3.2.20/examples/tutorial_builder/04_02_parse.rs new file mode 100644 index 000000000..13f41a18e --- /dev/null +++ b/vendor/clap-3.2.20/examples/tutorial_builder/04_02_parse.rs @@ -0,0 +1,17 @@ +use clap::{arg, command, value_parser}; + +fn main() { + let matches = command!() // requires `cargo` feature + .arg( + arg!(<PORT>) + .help("Network port to use") + .value_parser(value_parser!(u16).range(1..)), + ) + .get_matches(); + + // Note, it's safe to call unwrap() because the arg is required + let port: u16 = *matches + .get_one::<u16>("PORT") + .expect("'PORT' is required and parsing will fail if its missing"); + println!("PORT = {}", port); +} |