比较Go中的字符串和字节片而不复制

Question

What is the best way to check that Go string and a byte slice contain the same bytes? The simplest str == string(byteSlice) is inefficient as it copies byteSlice first.

I was looking for a version of Equal(a, b []byte) that takes a string as its argument, but could not find anything suitable.

Answer 1

Starting from Go 1.5 the compiler optimizes string(bytes) when comparing to a string using a stack-allocated temporary. Thus since Go 1.5

str == string(byteSlice)

became a canonical and efficient way to compare string to a byte slice.