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

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

Trait to represent types that can be created by multiplying elements of an iterator.

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

## Required methods

### `fn product<I: Iterator<Item = A>>(iter: I) -> Self`[src]

Method which takes an iterator and generates `Self` from the elements by multiplying the items.

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## Implementors

### `impl Product<Wrapping<i8>> for Wrapping<i8>`1.14.0[src]

#### `fn product<I: Iterator<Item = Self>>(iter: I) -> Self`[src]

### `impl Product<Wrapping<i16>> for Wrapping<i16>`1.14.0[src]

#### `fn product<I: Iterator<Item = Self>>(iter: I) -> Self`[src]

### `impl Product<Wrapping<i32>> for Wrapping<i32>`1.14.0[src]

#### `fn product<I: Iterator<Item = Self>>(iter: I) -> Self`[src]

### `impl Product<Wrapping<i64>> for Wrapping<i64>`1.14.0[src]

#### `fn product<I: Iterator<Item = Self>>(iter: I) -> Self`[src]

### `impl Product<Wrapping<i128>> for Wrapping<i128>`1.14.0[src]

#### `fn product<I: Iterator<Item = Self>>(iter: I) -> Self`[src]

### `impl Product<Wrapping<isize>> for Wrapping<isize>`1.14.0[src]

#### `fn product<I: Iterator<Item = Self>>(iter: I) -> Self`[src]

### `impl Product<Wrapping<u8>> for Wrapping<u8>`1.14.0[src]

#### `fn product<I: Iterator<Item = Self>>(iter: I) -> Self`[src]

### `impl Product<Wrapping<u16>> for Wrapping<u16>`1.14.0[src]

#### `fn product<I: Iterator<Item = Self>>(iter: I) -> Self`[src]

### `impl Product<Wrapping<u32>> for Wrapping<u32>`1.14.0[src]

#### `fn product<I: Iterator<Item = Self>>(iter: I) -> Self`[src]

### `impl Product<Wrapping<u64>> for Wrapping<u64>`1.14.0[src]

#### `fn product<I: Iterator<Item = Self>>(iter: I) -> Self`[src]

### `impl Product<Wrapping<u128>> for Wrapping<u128>`1.14.0[src]

#### `fn product<I: Iterator<Item = Self>>(iter: I) -> Self`[src]

### `impl Product<Wrapping<usize>> for Wrapping<usize>`1.14.0[src]

#### `fn product<I: Iterator<Item = Self>>(iter: I) -> Self`[src]

### `impl Product<f32> for f32`[src]

#### `fn product<I: Iterator<Item = Self>>(iter: I) -> Self`[src]

### `impl Product<f64> for f64`[src]

#### `fn product<I: Iterator<Item = Self>>(iter: I) -> Self`[src]

### `impl Product<i8> for i8`[src]

#### `fn product<I: Iterator<Item = Self>>(iter: I) -> Self`[src]

### `impl Product<i16> for i16`[src]

#### `fn product<I: Iterator<Item = Self>>(iter: I) -> Self`[src]

### `impl Product<i32> for i32`[src]

#### `fn product<I: Iterator<Item = Self>>(iter: I) -> Self`[src]

### `impl Product<i64> for i64`[src]

#### `fn product<I: Iterator<Item = Self>>(iter: I) -> Self`[src]

### `impl Product<i128> for i128`[src]

#### `fn product<I: Iterator<Item = Self>>(iter: I) -> Self`[src]

### `impl Product<isize> for isize`[src]

#### `fn product<I: Iterator<Item = Self>>(iter: I) -> Self`[src]

### `impl Product<u8> for u8`[src]

#### `fn product<I: Iterator<Item = Self>>(iter: I) -> Self`[src]

### `impl Product<u16> for u16`[src]

#### `fn product<I: Iterator<Item = Self>>(iter: I) -> Self`[src]

### `impl Product<u32> for u32`[src]

#### `fn product<I: Iterator<Item = Self>>(iter: I) -> Self`[src]

### `impl Product<u64> for u64`[src]

#### `fn product<I: Iterator<Item = Self>>(iter: I) -> Self`[src]

### `impl Product<u128> for u128`[src]

#### `fn product<I: Iterator<Item = Self>>(iter: I) -> Self`[src]

### `impl Product<usize> for usize`[src]

#### `fn product<I: Iterator<Item = Self>>(iter: I) -> Self`[src]

### `impl<'a> Product<&'a Wrapping<i8>> for Wrapping<i8>`1.14.0[src]

#### `fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self`[src]

### `impl<'a> Product<&'a Wrapping<i16>> for Wrapping<i16>`1.14.0[src]

#### `fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self`[src]

### `impl<'a> Product<&'a Wrapping<i32>> for Wrapping<i32>`1.14.0[src]

#### `fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self`[src]

### `impl<'a> Product<&'a Wrapping<i64>> for Wrapping<i64>`1.14.0[src]

#### `fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self`[src]

### `impl<'a> Product<&'a Wrapping<i128>> for Wrapping<i128>`1.14.0[src]

#### `fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self`[src]

### `impl<'a> Product<&'a Wrapping<isize>> for Wrapping<isize>`1.14.0[src]

#### `fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self`[src]

### `impl<'a> Product<&'a Wrapping<u8>> for Wrapping<u8>`1.14.0[src]

#### `fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self`[src]

### `impl<'a> Product<&'a Wrapping<u16>> for Wrapping<u16>`1.14.0[src]

#### `fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self`[src]

### `impl<'a> Product<&'a Wrapping<u32>> for Wrapping<u32>`1.14.0[src]

#### `fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self`[src]

### `impl<'a> Product<&'a Wrapping<u64>> for Wrapping<u64>`1.14.0[src]

#### `fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self`[src]

### `impl<'a> Product<&'a Wrapping<u128>> for Wrapping<u128>`1.14.0[src]

#### `fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self`[src]

### `impl<'a> Product<&'a Wrapping<usize>> for Wrapping<usize>`1.14.0[src]

#### `fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self`[src]

### `impl<'a> Product<&'a f32> for f32`[src]

#### `fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self`[src]

### `impl<'a> Product<&'a f64> for f64`[src]

#### `fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self`[src]

### `impl<'a> Product<&'a i8> for i8`[src]

#### `fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self`[src]

### `impl<'a> Product<&'a i16> for i16`[src]

#### `fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self`[src]

### `impl<'a> Product<&'a i32> for i32`[src]

#### `fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self`[src]

### `impl<'a> Product<&'a i64> for i64`[src]

#### `fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self`[src]

### `impl<'a> Product<&'a i128> for i128`[src]

#### `fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self`[src]

### `impl<'a> Product<&'a isize> for isize`[src]

#### `fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self`[src]

### `impl<'a> Product<&'a u8> for u8`[src]

#### `fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self`[src]

### `impl<'a> Product<&'a u16> for u16`[src]

#### `fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self`[src]

### `impl<'a> Product<&'a u32> for u32`[src]

#### `fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self`[src]

### `impl<'a> Product<&'a u64> for u64`[src]

#### `fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self`[src]

### `impl<'a> Product<&'a u128> for u128`[src]

#### `fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self`[src]

### `impl<'a> Product<&'a usize> for usize`[src]

#### `fn product<I: Iterator<Item = &'a Self>>(iter: I) -> Self`[src]

### `impl<T, U> Product<Option<U>> for Option<T> where
T: Product<U>,` 1.37.0[src]

#### `fn product<I>(iter: I) -> Option<T> where
I: Iterator<Item = Option<U>>,` [src]

Takes each element in the `Iterator`: if it is a `None`, no further elements are taken, and the `None` is returned. Should no `None` occur, the product of all elements is returned.

### `impl<T, U, E> Product<Result<U, E>> for Result<T, E> where
T: Product<U>,` 1.16.0[src]

#### `fn product<I>(iter: I) -> Result<T, E> where
I: Iterator<Item = Result<U, E>>,` [src]

Takes each element in the `Iterator`: if it is an `Err`, no further elements are taken, and the `Err` is returned. Should no `Err` occur, the product of all elements is returned.

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