Module lea::block::generic_array

This crate implements a structure that can be used as a generic array type. Core Rust array types [T; N] can't be used generically with respect to N, so for example this:

struct Foo<T, N> {
    data: [T; N]
}

won't work.

generic-array exports a GenericArray<T,N> type, which lets the above be implemented as:

use generic_array::{ArrayLength, GenericArray};

struct Foo<T, N: ArrayLength<T>> {
    data: GenericArray<T,N>
}

The ArrayLength<T> trait is implemented by default for unsigned integer types from typenum:

use generic_array::typenum::U5;

struct Foo<N: ArrayLength<i32>> {
    data: GenericArray<i32, N>
}

let foo = Foo::<U5>{data: GenericArray::default()};

For example, GenericArray<T, U5> would work almost like [T; 5]:

use generic_array::typenum::U5;

struct Foo<T, N: ArrayLength<T>> {
    data: GenericArray<T, N>
}

let foo = Foo::<i32, U5>{data: GenericArray::default()};

For ease of use, an arr! macro is provided - example below:

let array = arr![u32; 1, 2, 3];
assert_eq!(array[2], 3);

Modules

arr	Implementation for arr! macro.
functional	Functional programming with generic sequences
iter	GenericArray iterator implementation.
sequence	Useful traits for manipulating sequences of data stored in GenericArrays
typenum	This crate provides type-level numbers evaluated at compile time. It depends only on libcore.

Macros

arr	Macro allowing for easy generation of Generic Arrays. Example: let test = arr![u32; 1, 2, 3];

Structs

GenericArray	Struct representing a generic array - GenericArray<T, N> works like [T; N]
GenericArrayIter	An iterator that moves out of a GenericArray

Traits

ArrayLength

Trait making GenericArray work, marking types to be used as length of an array