Struct GroupMeta 

pub struct GroupMeta<'a> {
    pub name: &'a str,
    pub members: &'a [&'a str],
    pub required: bool,
    pub multiple: bool,
}

A set of one command’s arguments that relate to one another as a set.

Pairwise conflicts can say “at most one of these”, once per pair; what it cannot say is that one of them is needed, which is a statement about the set.

Fields

name: &'a str

What the group is called. It appears in the message a failed check produces, and it is how a reader tells two groups on one command apart.

members: &'a [&'a str]

The entries in the group, as selectors — --long or -s for flags, and the bare argument name for a positional.

required: bool

Whether at least one member has to be given.

multiple: bool

Whether more than one member may be given. False is what makes a bare group mutual exclusion, as it does in clap.

Implementations

impl GroupMeta<'_>

pub const EMPTY: GroupMeta<'static>

A group with nothing in it, for the array initialiser a const concat needs.

Trait Implementations

impl<'a> Clone for GroupMeta<'a>

fn clone(&self) -> GroupMeta<'a>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a> Copy for GroupMeta<'a>

impl<'a> Debug for GroupMeta<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.