core::iter::Sum - Rust
Description: API documentation for the Rust `Sum` trait in crate `core`.
Keywords: rust, rustlang, rust-lang, Sum

# Trait core::iter::Sum 1.12.0 [−] [src]

    pub trait Sum<A = Self>: Sized {
        fn sum<I: Iterator<Item=A>>(iter: I) -> Self;
    }

Trait to represent types that can be created by summing up an iterator.

This trait is used to implement the `sum()` method on iterators. Types which implement the trait can be generated by the `sum()` method. Like `FromIterator` this trait should rarely be called directly and instead interacted with through `Iterator::sum()`.

## Required Methods

### `fn sum<I: Iterator<Item=A>>(iter: I) -> Self`

Method which takes an iterator and generates `Self` from the elements by "summing up" the items.

## Implementors

- `impl Sum for i8`
- `impl<'a> Sum<&'a i8> for i8`
- `impl Sum for i16`
- `impl<'a> Sum<&'a i16> for i16`
- `impl Sum for i32`
- `impl<'a> Sum<&'a i32> for i32`
- `impl Sum for i64`
- `impl<'a> Sum<&'a i64> for i64`
- `impl Sum for isize`
- `impl<'a> Sum<&'a isize> for isize`
- `impl Sum for u8`
- `impl<'a> Sum<&'a u8> for u8`
- `impl Sum for u16`
- `impl<'a> Sum<&'a u16> for u16`
- `impl Sum for u32`
- `impl<'a> Sum<&'a u32> for u32`
- `impl Sum for u64`
- `impl<'a> Sum<&'a u64> for u64`
- `impl Sum for usize`
- `impl<'a> Sum<&'a usize> for usize`
- `impl Sum for core::num::Wrapping<i8>`
- `impl<'a> Sum<&'a Wrapping<i8>> for core::num::Wrapping<i8>`
- `impl Sum for core::num::Wrapping<i16>`
- `impl<'a> Sum<&'a Wrapping<i16>> for core::num::Wrapping<i16>`
- `impl Sum for core::num::Wrapping<i32>`
- `impl<'a> Sum<&'a Wrapping<i32>> for core::num::Wrapping<i32>`
- `impl Sum for core::num::Wrapping<i64>`
- `impl<'a> Sum<&'a Wrapping<i64>> for core::num::Wrapping<i64>`
- `impl Sum for core::num::Wrapping<isize>`
- `impl<'a> Sum<&'a Wrapping<isize>> for core::num::Wrapping<isize>`
- `impl Sum for core::num::Wrapping<u8>`
- `impl<'a> Sum<&'a Wrapping<u8>> for core::num::Wrapping<u8>`
- `impl Sum for core::num::Wrapping<u16>`
- `impl<'a> Sum<&'a Wrapping<u16>> for core::num::Wrapping<u16>`
- `impl Sum for core::num::Wrapping<u32>`
- `impl<'a> Sum<&'a Wrapping<u32>> for core::num::Wrapping<u32>`
- `impl Sum for core::num::Wrapping<u64>`
- `impl<'a> Sum<&'a Wrapping<u64>> for core::num::Wrapping<u64>`
- `impl Sum for core::num::Wrapping<usize>`
- `impl<'a> Sum<&'a Wrapping<usize>> for core::num::Wrapping<usize>`
- `impl Sum for f32`
- `impl<'a> Sum<&'a f32> for f32`
- `impl Sum for f64`
- `impl<'a> Sum<&'a f64> for f64`
- `impl<T, U, E> Sum<Result<U, E>> for Result<T, E> where T: Sum<U>`

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