def Semigroup.assoc

bend-lawful-stdlib@0.1.0.0 · src/class.bend:41

import bend-lawful-stdlib@0.1.0.0/src/class.bend as Class
import Base

41def Semigroup.assoc(-A: Data, d: Semigroup<A>, x: A, y: A, z: A) -> {Semigroup.op(A, d, x, Semigroup.op(A, d, y, z)) == Semigroup.op(A, d, Semigroup.op(A, d, x, y), z) : A}:
42  match d:
43    case Semigroup{op, assoc}:
44      assoc(x, y, z)

Uses (2)

Used by (1)