$ 03_04_subcommands_derive help
clap [..]
A simple to use, efficient, and full-featured Command Line Argument Parser
Usage:
03_04_subcommands_derive[EXE] <COMMAND>
Commands:
add Adds files to myapp
help Print this message or the help of the given subcommand(s)
Options:
-h, --help Print help information
-V, --version Print version information
$ 03_04_subcommands_derive help add
clap-add [..]
Adds files to myapp
Usage:
03_04_subcommands_derive[EXE] add [NAME]
Arguments:
[NAME]
Options:
-h, --help Print help information
-V, --version Print version information
$ 03_04_subcommands_derive add bob
'myapp add' was used, name is: Some("bob")
Because we used command: Commands instead of command: Option<Commands>:
$ 03_04_subcommands_derive
? failed
clap [..]
A simple to use, efficient, and full-featured Command Line Argument Parser
Usage:
03_04_subcommands_derive[EXE] <COMMAND>
Commands:
add Adds files to myapp
help Print this message or the help of the given subcommand(s)
Options:
-h, --help Print help information
-V, --version Print version information
Because we added #[clap(propagate_version = true)]:
$ 03_04_subcommands_derive --version
clap [..]
$ 03_04_subcommands_derive add --version
clap-add [..]