CommutativeEqual

Constructs an Equal[(A, B)] given an Equal[A] and Equal[B] by first comparing the A values for equality and then comparing the B values for equality, if necessary.

Constructs an Equal[C] given an Equal[A], an Equal[B] and a function f to transform a C value into an (A, B). The instance will convert each C value into an (A, B), compare the A values for equality, and then compare the B values for equality if necessary.

Returns a new Commutative instance that describes the same binary operator but applied in reverse order. Since the operation is commutative this instance is guaranteed to return the same results as the original instance but one order of combination or the other may be more efficient in certain cases.

Constructs an Equal[B] given an Equal[A] and a function f to transform a B value into an A value. The instance will convert each B value into an A and the compare the A values for equality.

Constructs an Equal[Either[A, B]] given an Equal[A] and an Equal[B]. The instance will compare the Either[A, B] values and if both are Right or Left compare them for equality.

Constructs an Equal[C] given an Equal[A], an Equal[B], and a function f to transform a C value into an Either[A, B]. The instance will convert each C value into an Either[A, B] and then if both are Right or Left compare them for equality.

Returns whether two values of type A are equal.

Returns whether two values of type A are not equal.