KeyTake

KeyTake(<|key1->value1, ...|>, {k1, k2,...})

returns an association of the rules for which the k1, k2,... are keys in the association.

KeySelect({key1->value1, ...}, {k1, k2,...})

returns an association of the rules for which the k1, k2,... are keys in the association.

Examples

>> r = {beta -> 4, alpha -> 2, x -> 4, z -> 2, w -> 0.8};

>> KeyTake(r, {alpha,x})
<|alpha->2,x->4|>

Implementation status

• ✅ - full supported

Github

• Implementation of KeyTake