The code uses a 256 byte array to store the file name, and to determine the length of the name it iterates through the array looking for the first 0. func blen

The code uses a 256 byte array to store the file name, and to determine the length of the name it iterates through the array looking for the first 0. func blen(b [256]byte) int { for i := 0; i < len(b); i++ { if b[i] == 0 { return i } } return len(b) } Is it not better to use a slice with 256 capacity and access to `len()` than for every file to iterate through the array until you find the end?