IndexOf function for arrays/slices
How to write a functional IndexOf function in golang using generics
IndexOf returns the index of the first occurrence of the specified value in the input slice, or -1 if the slice does not contain the value.
func IndexOf[A comparable](input []A, value A) int {
for i, v := range input {
if v == value {
return i
}
}
return -1
}
and this is a unittest for the function:
func TestIndexOf(t *testing.T) {
input := []int{1, 2, 3, 4, 5}
value := 3
expected := 2
result := util.IndexOf(input, value)
if expected != result {
t.Errorf("Expected %v, got %v", expected, result)
}
}