Enum core::iter::MinMaxResult
[−]
[src]
pub enum MinMaxResult<T> { NoElements, OneElement(T), MinMax(T, T), }
: unclear whether such a fine-grained result is widely useful
MinMaxResult
`MinMaxResultis an enum returned by
` is an enum returned by min_max
`min_max. See
`. See Iterator::min_max
`Iterator::min_max` for
more detail.
Variants
NoElements | Unstable : unclear whether such a fine-grained result is widely useful Empty iterator |
OneElement | Unstable : unclear whether such a fine-grained result is widely useful Iterator with one element, so the minimum and maximum are the same |
MinMax | Unstable : unclear whether such a fine-grained result is widely useful More than one element in the iterator, the first element is not larger than the second |
Methods
impl<T: Clone> MinMaxResult<T>
fn into_option(self) -> Option<(T, T)>
: type is unstable
into_option
`into_optioncreates an
` creates an Option
`Optionof type
` of type (T,T)
`(T,T). The returned
`. The returned Option
`Optionhas variant
`
has variant None
`Noneif and only if the
` if and only if the MinMaxResult
`MinMaxResulthas variant
` has variant
NoElements
`NoElements. Otherwise variant
`. Otherwise variant Some(x,y)
`Some(x,y)is returned where
` is returned where x <= y
`x <= y. If
`.
If MinMaxResult
`MinMaxResulthas variant
` has variant OneElement(x)
`OneElement(x), performing this operation will make one clone of
`, performing this operation
will make one clone of x
`x`.
Examples
#![feature(core)] extern crate core; fn main() { use std::iter::MinMaxResult::{self, NoElements, OneElement, MinMax}; let r: MinMaxResult<i32> = NoElements; assert_eq!(r.into_option(), None); let r = OneElement(1); assert_eq!(r.into_option(), Some((1, 1))); let r = MinMax(1, 2); assert_eq!(r.into_option(), Some((1, 2))); }use std::iter::MinMaxResult::{self, NoElements, OneElement, MinMax}; let r: MinMaxResult<i32> = NoElements; assert_eq!(r.into_option(), None); let r = OneElement(1); assert_eq!(r.into_option(), Some((1, 1))); let r = MinMax(1, 2); assert_eq!(r.into_option(), Some((1, 2)));