Trait datafrog::RelationLeaper[−][src]

pub trait RelationLeaper<Key: Ord, Val: Ord> {
    fn extend_with<'leap, Tuple: Ord, Func: Fn(&Tuple) -> Key>(
        &'leap self, 
        key_func: Func
    ) -> ExtendWith<'leap, Key, Val, Tuple, Func>
    where
        Key: 'leap,
        Val: 'leap;

    fn extend_anti<'leap, Tuple: Ord, Func: Fn(&Tuple) -> Key>(
        &'leap self, 
        key_func: Func
    ) -> ExtendAnti<'leap, Key, Val, Tuple, Func>
    where
        Key: 'leap,
        Val: 'leap;

    fn filter_with<'leap, Tuple: Ord, Func: Fn(&Tuple) -> (Key, Val)>(
        &'leap self, 
        key_func: Func
    ) -> FilterWith<'leap, Key, Val, Tuple, Func>
    where
        Key: 'leap,
        Val: 'leap;

    fn filter_anti<'leap, Tuple: Ord, Func: Fn(&Tuple) -> (Key, Val)>(
        &'leap self, 
        key_func: Func
    ) -> FilterAnti<'leap, Key, Val, Tuple, Func>
    where
        Key: 'leap,
        Val: 'leap;
}

Extension method for relations.

Required methods

fn extend_with<'leap, Tuple: Ord, Func: Fn(&Tuple) -> Key>(
    &'leap self,
    key_func: Func
) -> ExtendWith<'leap, Key, Val, Tuple, Func> where
    Key: 'leap,
    Val: 'leap, [src]

Extend with Val using the elements of the relation.

fn extend_anti<'leap, Tuple: Ord, Func: Fn(&Tuple) -> Key>(
    &'leap self,
    key_func: Func
) -> ExtendAnti<'leap, Key, Val, Tuple, Func> where
    Key: 'leap,
    Val: 'leap, [src]

Extend with Val using the complement of the relation.

fn filter_with<'leap, Tuple: Ord, Func: Fn(&Tuple) -> (Key, Val)>(
    &'leap self,
    key_func: Func
) -> FilterWith<'leap, Key, Val, Tuple, Func> where
    Key: 'leap,
    Val: 'leap, [src]

Extend with any value if tuple is present in relation.

fn filter_anti<'leap, Tuple: Ord, Func: Fn(&Tuple) -> (Key, Val)>(
    &'leap self,
    key_func: Func
) -> FilterAnti<'leap, Key, Val, Tuple, Func> where
    Key: 'leap,
    Val: 'leap, [src]

Extend with any value if tuple is absent from relation.

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Implementors

impl<Key: Ord, Val: Ord> RelationLeaper<Key, Val> for Relation<(Key, Val)>[src]

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