package helper

// we have several places where a function returns multiple values,
// and collecting them into an array so that we can treat them as a single value
// is convenient.

func collect3[T any](a, b, c T) [3]T {
	return [3]T{a, b, c}
}

func collect4[T any](a, b, c, d T) [4]T {
	return [4]T{a, b, c, d}
}

// it's also convenient to permute these things, for
// tests where the order shouldn't matter.

var permuteOrder3 = [][3]int{
	{0, 1, 2},
	{0, 2, 1},
	{1, 0, 2},
	{1, 2, 0},
	{2, 0, 1},
	{2, 1, 0},
}

func permute3[T any](in [3]T, order [3]int) (out [3]T) {
	for i, j := range order {
		out[i] = in[j]
	}

	return
}