Trait std::iter::Product

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

Trait 表示可以通过乘以迭代器的元素来创建的类型。

这个 trait 用于实现 Iterator::product()。 可以通过在迭代器上使用 product() 方法生成实现此 trait 的类型。

和 FromIterator 一样，这个 trait 应该很少被直接调用。

Required methods

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

该方法采用迭代器并通过乘以项从元素生成 Self。

Implementors

impl Product<f32> for f32

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

impl Product<f64> for f64

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

impl Product<i8> for i8

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

impl Product<i16> for i16

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

impl Product<i32> for i32

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

impl Product<i64> for i64

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

impl Product<i128> for i128

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

impl Product<isize> for isize

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

impl Product<u8> for u8

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

impl Product<u16> for u16

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

impl Product<u32> for u32

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

impl Product<u64> for u64

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

impl Product<u128> for u128

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

impl Product<usize> for usize

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

impl<T, U> Product<Option<U>> for Option<T> where
    T: Product<U>, 

pub fn product<I>(iter: I) -> Option<T> where
    I: Iterator<Item = Option<U>>, 

接受 Iterator 中的每个元素: 如果它是 None，则不再获取其他元素，并返回 None。 如果没有发生 None，则返回所有元素的乘积。

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

pub fn product<I>(iter: I) -> Result<T, E> where
    I: Iterator<Item = Result<U, E>>, 

接受 Iterator 中的每个元素: 如果它是 Err，则不再获取其他元素，并返回 Err。 如果没有发生 Err，则返回所有元素的乘积。