Trait frame_support::traits::DefensiveMax

source · 
pub trait DefensiveMax<T> {
    fn defensive_max(self, other: T) -> Self;
    fn defensive_strict_max(self, other: T) -> Self;
}
Expand description

Defensively calculates the maximum of two values.

Can be used in contexts where we assume the receiver value to be (strictly) larger.

Required Methods

Returns the maximum and defensively asserts that other is not larger than self.

Example
use frame_support::traits::DefensiveMax;
// max(4, 3) is 4.
assert_eq!(4, 4_u32.defensive_max(3_u32));
// max(4, 4) is 4.
assert_eq!(4, 4_u32.defensive_max(4_u32));
use frame_support::traits::DefensiveMax;
// max(4, 5) panics.
4_u32.defensive_max(5_u32);

Returns the maximum and defensively asserts that other is smaller than self.

Example
use frame_support::traits::DefensiveMax;
// y(4, 3) is 4.
assert_eq!(4, 4_u32.defensive_strict_max(3_u32));
use frame_support::traits::DefensiveMax;
// max(4, 4) panics.
4_u32.defensive_strict_max(4_u32);

Implementors