Enum Arg 

pub enum Arg<'a, T> {
    One(T),
    Many(&'a [T]),
}

One argument of a slice function: one item that every result pairs with, or one item for each result.

Variants

One(T)

Many(&'a [T])

Implementations

impl<'a, T: Copy> Arg<'a, T>

pub fn of(items: &'a [T]) -> Self

The argument that items gives: its only item for every result when it holds one, otherwise one item for each result.

pub fn nth(self, i: usize) -> T

Item i of this argument, or its one item.

pub fn one(self) -> Option<T>

The one item of an argument that holds one for every result.

pub fn converted<'b, A>( self, start: usize, n: usize, buf: &'b mut Vec<A>, f: impl Fn(T) -> A, ) -> Arg<'b, A>

Items start..start + n of this argument, each converted by f. A Many argument converts into buf.

Trait Implementations

impl<'a, T: Clone> Clone for Arg<'a, T>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a, T: Copy> Copy for Arg<'a, T>

impl<'a, T: Debug> Debug for Arg<'a, T>

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

Formats the value using the given formatter.