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

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

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>(iter: I) -> Self where
I: Iterator<Item = A>,`

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

## Implementors

###

`impl Product<f32> for f32`

[src]

####

`fn product<I>(iter: I) -> f32 where I: Iterator<Item = f32>,`

[src]

###

`impl Product<f64> for f64`

[src]

####

`fn product<I>(iter: I) -> f64 where I: Iterator<Item = f64>,`

[src]

###

`impl Product<i128> for i128`

[src]

####

`fn product<I>(iter: I) -> i128 where I: Iterator<Item = i128>,`

[src]

###

`impl Product<i16> for i16`

[src]

####

`fn product<I>(iter: I) -> i16 where I: Iterator<Item = i16>,`

[src]

###

`impl Product<i32> for i32`

[src]

####

`fn product<I>(iter: I) -> i32 where I: Iterator<Item = i32>,`

[src]

###

`impl Product<i64> for i64`

[src]

####

`fn product<I>(iter: I) -> i64 where I: Iterator<Item = i64>,`

[src]

###

`impl Product<i8> for i8`

[src]

####

`fn product<I>(iter: I) -> i8 where I: Iterator<Item = i8>,`

[src]

###

`impl Product<isize> for isize`

[src]

####

`fn product<I>(iter: I) -> isize where I: Iterator<Item = isize>,`

[src]

###

`impl Product<u128> for u128`

[src]

####

`fn product<I>(iter: I) -> u128 where I: Iterator<Item = u128>,`

[src]

###

`impl Product<u16> for u16`

[src]

####

`fn product<I>(iter: I) -> u16 where I: Iterator<Item = u16>,`

[src]

###

`impl Product<u32> for u32`

[src]

####

`fn product<I>(iter: I) -> u32 where I: Iterator<Item = u32>,`

[src]

###

`impl Product<u64> for u64`

[src]

####

`fn product<I>(iter: I) -> u64 where I: Iterator<Item = u64>,`

[src]

###

`impl Product<u8> for u8`

[src]

####

`fn product<I>(iter: I) -> u8 where I: Iterator<Item = u8>,`

[src]

###

`impl Product<usize> for usize`

[src]

####

`fn product<I>(iter: I) -> usize where I: Iterator<Item = usize>,`

[src]

###

`impl Product<Wrapping<i128>> for Wrapping<i128>`

[src]

####

`fn product<I>(iter: I) -> Wrapping<i128> where I: Iterator<Item = Wrapping<i128>>,`

[src]

###

`impl Product<Wrapping<i16>> for Wrapping<i16>`

[src]

####

`fn product<I>(iter: I) -> Wrapping<i16> where I: Iterator<Item = Wrapping<i16>>,`

[src]

###

`impl Product<Wrapping<i32>> for Wrapping<i32>`

[src]

####

`fn product<I>(iter: I) -> Wrapping<i32> where I: Iterator<Item = Wrapping<i32>>,`

[src]

###

`impl Product<Wrapping<i64>> for Wrapping<i64>`

[src]

####

`fn product<I>(iter: I) -> Wrapping<i64> where I: Iterator<Item = Wrapping<i64>>,`

[src]

###

`impl Product<Wrapping<i8>> for Wrapping<i8>`

[src]

####

`fn product<I>(iter: I) -> Wrapping<i8> where I: Iterator<Item = Wrapping<i8>>,`

[src]

###

`impl Product<Wrapping<isize>> for Wrapping<isize>`

[src]

####

`fn product<I>(iter: I) -> Wrapping<isize> where I: Iterator<Item = Wrapping<isize>>,`

[src]

###

`impl Product<Wrapping<u128>> for Wrapping<u128>`

[src]

####

`fn product<I>(iter: I) -> Wrapping<u128> where I: Iterator<Item = Wrapping<u128>>,`

[src]

###

`impl Product<Wrapping<u16>> for Wrapping<u16>`

[src]

####

`fn product<I>(iter: I) -> Wrapping<u16> where I: Iterator<Item = Wrapping<u16>>,`

[src]

###

`impl Product<Wrapping<u32>> for Wrapping<u32>`

[src]

####

`fn product<I>(iter: I) -> Wrapping<u32> where I: Iterator<Item = Wrapping<u32>>,`

[src]

###

`impl Product<Wrapping<u64>> for Wrapping<u64>`

[src]

####

`fn product<I>(iter: I) -> Wrapping<u64> where I: Iterator<Item = Wrapping<u64>>,`

[src]

###

`impl Product<Wrapping<u8>> for Wrapping<u8>`

[src]

####

`fn product<I>(iter: I) -> Wrapping<u8> where I: Iterator<Item = Wrapping<u8>>,`

[src]

###

`impl Product<Wrapping<usize>> for Wrapping<usize>`

[src]

####

`fn product<I>(iter: I) -> Wrapping<usize> where I: Iterator<Item = Wrapping<usize>>,`

[src]

###

`impl<'a> Product<&'a f32> for f32`

[src]

####

`fn product<I>(iter: I) -> f32 where I: Iterator<Item = &'a f32>,`

[src]

###

`impl<'a> Product<&'a f64> for f64`

[src]

####

`fn product<I>(iter: I) -> f64 where I: Iterator<Item = &'a f64>,`

[src]

###

`impl<'a> Product<&'a i128> for i128`

[src]

####

`fn product<I>(iter: I) -> i128 where I: Iterator<Item = &'a i128>,`

[src]

###

`impl<'a> Product<&'a i16> for i16`

[src]

####

`fn product<I>(iter: I) -> i16 where I: Iterator<Item = &'a i16>,`

[src]

###

`impl<'a> Product<&'a i32> for i32`

[src]

####

`fn product<I>(iter: I) -> i32 where I: Iterator<Item = &'a i32>,`

[src]

###

`impl<'a> Product<&'a i64> for i64`

[src]

####

`fn product<I>(iter: I) -> i64 where I: Iterator<Item = &'a i64>,`

[src]

###

`impl<'a> Product<&'a i8> for i8`

[src]

####

`fn product<I>(iter: I) -> i8 where I: Iterator<Item = &'a i8>,`

[src]

###

`impl<'a> Product<&'a isize> for isize`

[src]

####

`fn product<I>(iter: I) -> isize where I: Iterator<Item = &'a isize>,`

[src]

###

`impl<'a> Product<&'a u128> for u128`

[src]

####

`fn product<I>(iter: I) -> u128 where I: Iterator<Item = &'a u128>,`

[src]

###

`impl<'a> Product<&'a u16> for u16`

[src]

####

`fn product<I>(iter: I) -> u16 where I: Iterator<Item = &'a u16>,`

[src]

###

`impl<'a> Product<&'a u32> for u32`

[src]

####

`fn product<I>(iter: I) -> u32 where I: Iterator<Item = &'a u32>,`

[src]

###

`impl<'a> Product<&'a u64> for u64`

[src]

####

`fn product<I>(iter: I) -> u64 where I: Iterator<Item = &'a u64>,`

[src]

###

`impl<'a> Product<&'a u8> for u8`

[src]

####

`fn product<I>(iter: I) -> u8 where I: Iterator<Item = &'a u8>,`

[src]

###

`impl<'a> Product<&'a usize> for usize`

[src]

####

`fn product<I>(iter: I) -> usize where I: Iterator<Item = &'a usize>,`

[src]

###

`impl<'a> Product<&'a Wrapping<i128>> for Wrapping<i128>`

[src]

####

`fn product<I>(iter: I) -> Wrapping<i128> where I: Iterator<Item = &'a Wrapping<i128>>,`

[src]

###

`impl<'a> Product<&'a Wrapping<i16>> for Wrapping<i16>`

[src]

####

`fn product<I>(iter: I) -> Wrapping<i16> where I: Iterator<Item = &'a Wrapping<i16>>,`

[src]

###

`impl<'a> Product<&'a Wrapping<i32>> for Wrapping<i32>`

[src]

####

`fn product<I>(iter: I) -> Wrapping<i32> where I: Iterator<Item = &'a Wrapping<i32>>,`

[src]

###

`impl<'a> Product<&'a Wrapping<i64>> for Wrapping<i64>`

[src]

####

`fn product<I>(iter: I) -> Wrapping<i64> where I: Iterator<Item = &'a Wrapping<i64>>,`

[src]

###

`impl<'a> Product<&'a Wrapping<i8>> for Wrapping<i8>`

[src]

####

`fn product<I>(iter: I) -> Wrapping<i8> where I: Iterator<Item = &'a Wrapping<i8>>,`

[src]

###

`impl<'a> Product<&'a Wrapping<isize>> for Wrapping<isize>`

[src]

####

`fn product<I>(iter: I) -> Wrapping<isize> where I: Iterator<Item = &'a Wrapping<isize>>,`

[src]

###

`impl<'a> Product<&'a Wrapping<u128>> for Wrapping<u128>`

[src]

####

`fn product<I>(iter: I) -> Wrapping<u128> where I: Iterator<Item = &'a Wrapping<u128>>,`

[src]

###

`impl<'a> Product<&'a Wrapping<u16>> for Wrapping<u16>`

[src]

####

`fn product<I>(iter: I) -> Wrapping<u16> where I: Iterator<Item = &'a Wrapping<u16>>,`

[src]

###

`impl<'a> Product<&'a Wrapping<u32>> for Wrapping<u32>`

[src]

####

`fn product<I>(iter: I) -> Wrapping<u32> where I: Iterator<Item = &'a Wrapping<u32>>,`

[src]

###

`impl<'a> Product<&'a Wrapping<u64>> for Wrapping<u64>`

[src]

####

`fn product<I>(iter: I) -> Wrapping<u64> where I: Iterator<Item = &'a Wrapping<u64>>,`

[src]

###

`impl<'a> Product<&'a Wrapping<u8>> for Wrapping<u8>`

[src]

####

`fn product<I>(iter: I) -> Wrapping<u8> where I: Iterator<Item = &'a Wrapping<u8>>,`

[src]

###

`impl<'a> Product<&'a Wrapping<usize>> for Wrapping<usize>`

[src]

####

`fn product<I>(iter: I) -> Wrapping<usize> where I: Iterator<Item = &'a Wrapping<usize>>,`

[src]

###

`impl<T, U, E> Product<Result<U, E>> for Result<T, E> where T: Product<U>,`

[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.

# Help

## Keyboard Shortcuts

`?`
  Show this help dialog
`S`
  Focus the search field
`↑`
  Move up in search results
`↓`
  Move down in search results
`↹`
  Switch tab
`⏎`
  Go to active search result
`+`
  Expand all sections
`-`
  Collapse all sections

## Search Tricks

Prefix searches with a type followed by a colon (e.g. `fn:`) to restrict the search to a given type.

Accepted types are: `fn`, `mod`, `struct`, `enum`, `trait`, `type`, `macro`, and `const`.

Search functions by type signature (e.g. `vec -> usize` or `* -> vec`)

Search multiple things at once by splitting your query with comma (e.g. `str,u8` or `String,struct:Vec,test`)