go get github.com/cristalhq/ordx

less := func(a, b int) bool { return a < b }
cmp := ordx.AsCmp(less)

fmt.Println(cmp(1, 2))
fmt.Println(cmp(2, 1))
fmt.Println(cmp(2, 2))

// Output:
// -1
// 1
// 0

cmp := ordx.RankCmp([]string{"low", "medium", "high"})

fmt.Println(cmp("low", "high"))
fmt.Println(cmp("high", "low"))
fmt.Println(cmp("medium", "medium"))

// Output:
// -1
// 1
// 0