On Thu, Feb 4, 2021 at 10:32 PM Steve Roth <[email protected]> wrote:
>
> How can I implement a writeByte function, against an unknown io.Writer
> implementation, that doesn't allocate heap memory?
>
The only way I'm aware of achieving this is proving to the compiler that
buf is safe to be kept by w by moving buf to the package block.
var buf [1]byte
func writeByte(b byte) {
buf[0] = b
_, err = w.Write(buf[:])
}
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