mirror of
https://github.com/clap-rs/clap
synced 2024-12-14 06:42:33 +00:00
docs: add back example of using non-structopt arguments
This commit is contained in:
parent
eb047b6b1f
commit
c85526bd4e
1 changed files with 32 additions and 2 deletions
34
README.md
34
README.md
|
@ -205,7 +205,7 @@ fn main() {
|
|||
This second method shows a method using the 'Builder Pattern' which allows more advanced configuration options (not shown in this small example), or even dynamically generating arguments when desired. The downside is it's more verbose.
|
||||
|
||||
```rust,no_run
|
||||
// (Full example with detailed comments in examples/01a_quick_example.rs)
|
||||
// (Full example with detailed comments in examples/01b_quick_example.rs)
|
||||
//
|
||||
// This example demonstrates clap's "builder pattern" method of creating arguments
|
||||
// which the most flexible, but also most verbose.
|
||||
|
@ -239,7 +239,37 @@ fn main() {
|
|||
.about("print debug information verbosely")))
|
||||
.get_matches();
|
||||
|
||||
// Same as above examples...
|
||||
// You can check the value provided by positional arguments, or option arguments
|
||||
if let Some(i) = matches.value_of("input") {
|
||||
println!("Value for input: {}", i);
|
||||
}
|
||||
|
||||
if let Some(c) = matches.value_of("config") {
|
||||
println!("Value for config: {}", c);
|
||||
}
|
||||
|
||||
// You can see how many times a particular flag or argument occurred
|
||||
// Note, only flags can have multiple occurrences
|
||||
match matches.occurrences_of("v") {
|
||||
0 => println!("Verbose mode is off"),
|
||||
1 => println!("Verbose mode is kind of on"),
|
||||
2 => println!("Verbose mode is on"),
|
||||
3 | _ => println!("Don't be crazy"),
|
||||
}
|
||||
|
||||
// You can check for the existence of subcommands, and if found use their
|
||||
// matches just as you would the top level app
|
||||
if let Some(ref matches) = matches.subcommand_matches("test") {
|
||||
// "$ myapp test" was run
|
||||
if matches.is_present("debug") {
|
||||
// "$ myapp test -d" was run
|
||||
println!("Printing debug info...");
|
||||
} else {
|
||||
println!("Printing normally...");
|
||||
}
|
||||
}
|
||||
|
||||
// Continued program logic goes here...
|
||||
}
|
||||
```
|
||||
|
||||
|
|
Loading…
Reference in a new issue