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Add example from README.md as basic.rs

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a dinosaur
2025-11-02 22:55:00 +11:00
parent 274fbbf097
commit ae7c12ad62
2 changed files with 56 additions and 4 deletions
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12
README.md
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@@ -22,12 +22,15 @@ let mut number = 0;
enum Arg { Help, Number, File, Out }
const OPTIONS: Opts<Arg> = Opts::new(&[
Opt::help_flag(Arg::Help, &["-h", "--help"]).help_text("Show this help and exit."),
Opt::value(Arg::Number, &["-n", "--number"], "value").help_text("Optionally specify a number (default: 0)"),
Opt::positional(Arg::File, "file").required().help_text("Input file."),
Opt::positional(Arg::Out, "out").help_text("Output destination (optional).")
Opt::value(Arg::Number, &["-n", "--number"], "value")
.help_text("Optionally specify a number (default: 0)"),
Opt::positional(Arg::File, "file").required()
.help_text("Input file."),
Opt::positional(Arg::Out, "out")
.help_text("Output destination (optional).")
]).with_description("My simple utility.");
// Parse the arguments
// Parse command-line arguments from `std::env::args()`
match OPTIONS.parse_easy(|program_name, id, _opt, _name, arg| {
match id {
Arg::Help => {
@@ -54,6 +57,7 @@ println!("{file:?} -> {out:?} (number: {number:?})",
main:
* Fixed incorrect error message format for coerced parsing errors.
* Added basic example.
v0.1.0:
* Initial release.