Have you tried examining the assembler output? go build -gcflags="-S"
program.go if I recall correctly.
On Wednesday, August 3, 2016 at 11:27:36 AM UTC-4, T L wrote:
>
>
> I know a string value can be used as []byte if the first parameter if the
> builtin copy/append function is a []byte value:
>
>> var bs []byte = make([]byte, 10)
>> copy(bs, "abcde")
>
>
> but if do explicit conversion anyway on the second string value
>
>> var bs []byte = make([]byte, 10)
>> copy(bs, []byte("abcde"))
>>
> will compiler do optimization here to avoid copying the underline byte
> array of the string?
>
>
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