Trait ord_subset::OrdSubset
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[src]
pub trait OrdSubset: PartialOrd<Self> + PartialEq<Self> { fn is_outside_order(&self) -> bool; }
Trait for types that form a total order when a few values are disallowed.
is_outside_order() must return true for these outliers and false for anything else.
std::cmp::PartialOrd::partial_cmp(a,b) must return Some(_) if a,b are both inside order and None if only one is outside order. Return value for two variables outside order is undefined.