Trait coins_bip32::ecdsa::signature::digest::block_buffer::generic_array::sequence::Shorten

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pub unsafe trait Shorten<T>: GenericSequence<T> {
    type Shorter: Lengthen<T>
    where
        <Self::Shorter as Lengthen<T>>::Longer == Self;

    fn pop_back(self) -> (Self::Shorter, T);
    fn pop_front(self) -> (T, Self::Shorter);
}
Expand description

Defines a GenericSequence which can be shortened by removing the first or last element from it.

Additionally, any shortened sequence can be lengthened by appending or prepending an element to it.

Required Associated Types

GenericSequence that has one less element than Self

Required Methods

Returns a new array without the last element, and the last element.

Example:

let a = arr![i32; 1, 2, 3, 4];

let (init, last) = a.pop_back();

assert_eq!(init, arr![i32; 1, 2, 3]);
assert_eq!(last, 4);

Returns a new array without the first element, and the first element. Example:

let a = arr![i32; 1, 2, 3, 4];

let (head, tail) = a.pop_front();

assert_eq!(head, 1);
assert_eq!(tail, arr![i32; 2, 3, 4]);

Implementors