macro_rules! values_t {
($m:ident, $v:expr, $t:ty) => { ... };
($m:ident.values_of($v:expr), $t:ty) => { ... };
}
Expand description
Convenience macro getting a typed value Vec<T>
where T
implements std::str::FromStr
This macro returns a clap::Result<Vec<T>>
which allows you as the developer to decide
what you’d like to do on a failed parse.
Examples
let matches = App::new("myapp")
.arg_from_usage("[seq]... 'A sequence of pos whole nums, i.e. 20 45'")
.get_matches();
let vals = values_t!(matches.values_of("seq"), u32).unwrap_or_else(|e| e.exit());
for v in &vals {
println!("{} + 2: {}", v, v + 2);
}
let vals = values_t!(matches, "seq", u32).unwrap_or_else(|e| e.exit());
for v in &vals {
println!("{} + 2: {}", v, v + 2);
}