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

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

    fn append(self, last: T) -> Self::Longer;
    fn prepend(self, first: T) -> Self::Longer;
}
Expand description

Defines any GenericSequence which can be lengthened or extended by appending or prepending an element to it.

Any lengthened sequence can be shortened back to the original using pop_front or pop_back

Required Associated Types

GenericSequence that has one more element than Self

Required Methods

Returns a new array with the given element appended to the end of it.

Example:

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

let b = a.append(4);

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

Returns a new array with the given element prepended to the front of it.

Example:

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

let b = a.prepend(4);

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

Implementors