struct Tensor {}

fn (t Tensor) [] (parts []SliceIndex) string {
	return ''
}

fn fn_contains_index_expr() {
	arr := [1, 2, 3, 4, 5]
	t := Tensor{}
	a := 1 in arr[0..]
	_ := a
	_ := 1 in arr[..2]
	_ := 1 in arr[1..3]
	d := arr[2]
	_ := d
	_ := arr[2..]
	_ := arr[..2]
	_ := arr[1..3]
	_ := t[1..3, ..]
	_ := t[1, 2]
}