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Diffstat (limited to 'clap/examples/11_only_specific_values.rs')
| -rw-r--r-- | clap/examples/11_only_specific_values.rs | 33 |
1 files changed, 0 insertions, 33 deletions
diff --git a/clap/examples/11_only_specific_values.rs b/clap/examples/11_only_specific_values.rs deleted file mode 100644 index 3445218..0000000 --- a/clap/examples/11_only_specific_values.rs +++ /dev/null @@ -1,33 +0,0 @@ -extern crate clap; - -use clap::{App, Arg}; - -fn main() { - // If you have arguments of specific values you want to test for, you can use the - // .possible_values() method of Arg - // - // This allows you specify the valid values for that argument. If the user does not use one of - // those specific values, they will receive a graceful exit with error message informing them - // of the mistake, and what the possible valid values are - // - // For this example, assume you want one positional argument of either "fast" or "slow" - // i.e. the only possible ways to run the program are "myprog fast" or "myprog slow" - let matches = App::new("myapp").about("does awesome things") - .arg(Arg::with_name("MODE") - .help("What mode to run the program in") - .index(1) - .possible_values(&["fast", "slow"]) - .required(true)) - .get_matches(); - - // Note, it's safe to call unwrap() because the arg is required - match matches.value_of("MODE").unwrap() { - "fast" => { - // Do fast things... - }, - "slow" => { - // Do slow things... - }, - _ => unreachable!() - } -} |