Function ExampleOption_avoidEqualMethod

cmp/example_test.go:229–250

If the Equal method defined on a type is not suitable, the type can be dynamically transformed to be stripped of the Equal method (or any method for that matter).

()

// dynamically transformed to be stripped of the Equal method (or any method
// for that matter).
func ExampleOption_avoidEqualMethod() {
	// Suppose otherString.Equal performs a case-insensitive equality,
	// which is too loose for our needs.
	// We can avoid the methods of otherString by declaring a new type.
	type myString otherString

	// This transformer converts otherString to myString, allowing Equal to use
	// other Options to determine equality.
	trans := cmp.Transformer("", func(in otherString) myString {
		return myString(in)
	})

	x := []otherString{"foo", "bar", "baz"}
	y := []otherString{"fOO", "bAr", "Baz"} // Same as before, but with different case

	fmt.Println(cmp.Equal(x, y))        // Equal because of case-insensitivity
	fmt.Println(cmp.Equal(x, y, trans)) // Not equal because of more exact equality

	// Output:
	// true
	// false
}

func roundF64(z float64) float64 {
	if z < 0 {