Example
To filter a slice without allocating a new underlying array:
// Our base slice
slice := []int{ 1, 2, 3, 4 }
// Create a zero-length slice with the same underlying array
tmp := slice[:0]
for _, v := range slice {
if v % 2 == 0 {
// Append desired values to slice
tmp = append(tmp, v)
}
}
// (Optional) Reassign the slice
slice = tmp // [2, 4]
