Enum frame_support::traits::SameOrOther

pub enum SameOrOther<A, B> {
    None,
    Same(A),
    Other(B),
}

Return type used when we need to return one of two items, each of the opposite direction or sign, with one (Same) being of the same type as the self or primary argument of the function that returned it.

Variants

None

No item.

Same(A)

An item of the same type as the Self on which the return function was called.

Other(B)

An item of the opposite type to the Self on which the return function was called.

Implementations

impl<A, B> SameOrOther<A, B>

pub fn try_same(self) -> Result<A, Self>

Returns Ok with the inner value of Same if self is that, otherwise returns Err with self.

pub fn try_other(self) -> Result<B, Self>

Returns Ok with the inner value of Other if self is that, otherwise returns Err with self.

pub fn try_none(self) -> Result<(), Self>

Returns Ok if self is None, otherwise returns Err with self.

pub fn same(self) -> Result<A, B>where
    A: Default,

pub fn other(self) -> Result<B, A>where
    B: Default,

Trait Implementations

impl<A, B> TryDrop for SameOrOther<A, B>

fn try_drop(self) -> Result<(), Self>

Drop an instance cleanly. Only works if its value represents “no-operation”.