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package type_eq
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Module Type_eqSource
Represents equality between two types 'a, 'b. The constraint means that, if you have an instance of Eq, 'a and 'b are the same type
coerce eq a applies equality proof eq on a value of type 'a to coerce it to 'b
commute eq uses the commutative property of equality to produce a proof of equality from 'b to 'a from a proof from 'a to 'b
transit eq_a eq_b uses the transitive property of equality to produce a proof of equality from 'a to 'c from proofs from 'a to 'b and 'b to 'c
val_equal ?equal eq a b returns equal a b after casting a to 'b.
?equal is ( = ) by default