Sum in core::iter - Rust
Description: Trait to represent types that can be created by summing up an iterator.

# Trait Sum

1.6.0 · Source

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

Expand description

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

This trait is used to implement `Iterator::sum()`. Types which implement this trait can be generated by using the `sum()` method on an iterator. Like `FromIterator`, this trait should rarely be called directly.

## Required Methods§

1.12.0 · Source

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

Takes an iterator and generates `Self` from the elements by “summing up” the items.

## Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

## Implementors§

1.12.0 · Source§

### impl Sum for f32

1.12.0 · Source§

### impl Sum for f64

1.12.0 · Source§

### impl Sum for i8

1.12.0 · Source§

### impl Sum for i16

1.12.0 · Source§

### impl Sum for i32

1.12.0 · Source§

### impl Sum for i64

1.12.0 · Source§

### impl Sum for i128

1.12.0 · Source§

### impl Sum for isize

1.12.0 · Source§

### impl Sum for u8

1.12.0 · Source§

### impl Sum for u16

1.12.0 · Source§

### impl Sum for u32

1.12.0 · Source§

### impl Sum for u64

1.12.0 · Source§

### impl Sum for u128

1.12.0 · Source§

### impl Sum for usize

1.14.0 · Source§

### impl Sum for Wrapping<i8>

1.14.0 · Source§

### impl Sum for Wrapping<i16>

1.14.0 · Source§

### impl Sum for Wrapping<i32>

1.14.0 · Source§

### impl Sum for Wrapping<i64>

1.14.0 · Source§

### impl Sum for Wrapping<i128>

1.14.0 · Source§

### impl Sum for Wrapping<isize>

1.14.0 · Source§

### impl Sum for Wrapping<u8>

1.14.0 · Source§

### impl Sum for Wrapping<u16>

1.14.0 · Source§

### impl Sum for Wrapping<u32>

1.14.0 · Source§

### impl Sum for Wrapping<u64>

1.14.0 · Source§

### impl Sum for Wrapping<u128>

1.14.0 · Source§

### impl Sum for Wrapping<usize>

1.16.0 · Source§

### impl Sum for Duration

1.12.0 · Source§

### impl<'a> Sum<&'a f32> for f32

1.12.0 · Source§

### impl<'a> Sum<&'a f64> for f64

1.12.0 · Source§

### impl<'a> Sum<&'a i8> for i8

1.12.0 · Source§

### impl<'a> Sum<&'a i16> for i16

1.12.0 · Source§

### impl<'a> Sum<&'a i32> for i32

1.12.0 · Source§

### impl<'a> Sum<&'a i64> for i64

1.12.0 · Source§

### impl<'a> Sum<&'a i128> for i128

1.12.0 · Source§

### impl<'a> Sum<&'a isize> for isize

1.12.0 · Source§

### impl<'a> Sum<&'a u8> for u8

1.12.0 · Source§

### impl<'a> Sum<&'a u16> for u16

1.12.0 · Source§

### impl<'a> Sum<&'a u32> for u32

1.12.0 · Source§

### impl<'a> Sum<&'a u64> for u64

1.12.0 · Source§

### impl<'a> Sum<&'a u128> for u128

1.12.0 · Source§

### impl<'a> Sum<&'a usize> for usize

1.14.0 · Source§

### impl<'a> Sum<&'a Wrapping<i8>> for Wrapping<i8>

1.14.0 · Source§

### impl<'a> Sum<&'a Wrapping<i16>> for Wrapping<i16>

1.14.0 · Source§

### impl<'a> Sum<&'a Wrapping<i32>> for Wrapping<i32>

1.14.0 · Source§

### impl<'a> Sum<&'a Wrapping<i64>> for Wrapping<i64>

1.14.0 · Source§

### impl<'a> Sum<&'a Wrapping<i128>> for Wrapping<i128>

1.14.0 · Source§

### impl<'a> Sum<&'a Wrapping<isize>> for Wrapping<isize>

1.14.0 · Source§

### impl<'a> Sum<&'a Wrapping<u8>> for Wrapping<u8>

1.14.0 · Source§

### impl<'a> Sum<&'a Wrapping<u16>> for Wrapping<u16>

1.14.0 · Source§

### impl<'a> Sum<&'a Wrapping<u32>> for Wrapping<u32>

1.14.0 · Source§

### impl<'a> Sum<&'a Wrapping<u64>> for Wrapping<u64>

1.14.0 · Source§

### impl<'a> Sum<&'a Wrapping<u128>> for Wrapping<u128>

1.14.0 · Source§

### impl<'a> Sum<&'a Wrapping<usize>> for Wrapping<usize>

1.16.0 · Source§

### impl<'a> Sum<&'a Duration> for Duration

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### impl<'a, const N: usize> Sum<&'a Simd<f32, N>> for Simd<f32, N>
where LaneCount<N>: SupportedLaneCount,

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### impl<'a, const N: usize> Sum<&'a Simd<f64, N>> for Simd<f64, N>
where LaneCount<N>: SupportedLaneCount,

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### impl<'a, const N: usize> Sum<&'a Simd<i8, N>> for Simd<i8, N>
where LaneCount<N>: SupportedLaneCount,

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### impl<'a, const N: usize> Sum<&'a Simd<i16, N>> for Simd<i16, N>
where LaneCount<N>: SupportedLaneCount,

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### impl<'a, const N: usize> Sum<&'a Simd<i32, N>> for Simd<i32, N>
where LaneCount<N>: SupportedLaneCount,

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### impl<'a, const N: usize> Sum<&'a Simd<i64, N>> for Simd<i64, N>
where LaneCount<N>: SupportedLaneCount,

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### impl<'a, const N: usize> Sum<&'a Simd<isize, N>> for Simd<isize, N>
where LaneCount<N>: SupportedLaneCount,

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### impl<'a, const N: usize> Sum<&'a Simd<u8, N>> for Simd<u8, N>
where LaneCount<N>: SupportedLaneCount,

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### impl<'a, const N: usize> Sum<&'a Simd<u16, N>> for Simd<u16, N>
where LaneCount<N>: SupportedLaneCount,

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### impl<'a, const N: usize> Sum<&'a Simd<u32, N>> for Simd<u32, N>
where LaneCount<N>: SupportedLaneCount,

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### impl<'a, const N: usize> Sum<&'a Simd<u64, N>> for Simd<u64, N>
where LaneCount<N>: SupportedLaneCount,

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### impl<'a, const N: usize> Sum<&'a Simd<usize, N>> for Simd<usize, N>
where LaneCount<N>: SupportedLaneCount,

1.37.0 · Source§

### impl<T, U> Sum<Option<U>> for Option<T>
where T: Sum<U>,

1.16.0 · Source§

### impl<T, U, E> Sum<Result<U, E>> for Result<T, E>
where T: Sum<U>,

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### impl<const N: usize> Sum for Simd<f32, N>
where LaneCount<N>: SupportedLaneCount,

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### impl<const N: usize> Sum for Simd<f64, N>
where LaneCount<N>: SupportedLaneCount,

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### impl<const N: usize> Sum for Simd<i8, N>
where LaneCount<N>: SupportedLaneCount,

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### impl<const N: usize> Sum for Simd<i16, N>
where LaneCount<N>: SupportedLaneCount,

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### impl<const N: usize> Sum for Simd<i32, N>
where LaneCount<N>: SupportedLaneCount,

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### impl<const N: usize> Sum for Simd<i64, N>
where LaneCount<N>: SupportedLaneCount,

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### impl<const N: usize> Sum for Simd<isize, N>
where LaneCount<N>: SupportedLaneCount,

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### impl<const N: usize> Sum for Simd<u8, N>
where LaneCount<N>: SupportedLaneCount,

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### impl<const N: usize> Sum for Simd<u16, N>
where LaneCount<N>: SupportedLaneCount,

Source§

### impl<const N: usize> Sum for Simd<u32, N>
where LaneCount<N>: SupportedLaneCount,

Source§

### impl<const N: usize> Sum for Simd<u64, N>
where LaneCount<N>: SupportedLaneCount,

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### impl<const N: usize> Sum for Simd<usize, N>
where LaneCount<N>: SupportedLaneCount,