如何将一小片复制到大片的末尾

Question

I'm looking for the equivalent of Java System.arraycopy()

Let's say I have 2 slices

small := make([]byte, 4)
big := make([]byte, 10)

I'd like to copy the content of small to big at position 6 (the bytes of small being the last bytes of big

The only way I found is to write a loop.

Answer 1

Use the builtin copy function:

copy(big[6:], small)