Derive Macro clap_derive::Clap

#[derive(Clap)]
{
    // Attributes available to this derive:
    #[clap]
}

Generates the Clap implementation.

This is far less verbose than defining the [App] struct manually, receiving an instance of [ArgMatches] from conducting parsing, and then implementing a conversion code (usually impl From<ArgMatches> for MyStruct) to instantiate an instance of the user context struct.