Can someone help me understand how `bytealg.MakeNoZero()` in the Go standard library works, please?
https://github.com/golang/go/blob/master/src/internal/bytealg/bytealg.go#L118 <https://github.com/golang/go/blob/master/src/internal/bytealg/bytealg.go#L118> In the source it is a `func` without a body, and in my own code that won't compile in Go; I get "missing function body." Where is its implementation and how does the Go compiler handle it? I discovered `bytealg.MakeNoZero()` looking into the source for `strings.Builder`: https://github.com/golang/go/blob/master/src/strings/builder.go#L61 <https://github.com/golang/go/blob/master/src/strings/builder.go#L61> I was considering following the advice in Go Proverbs that "A little copying is better than a little dependency" but I obviously found that I cannot copy it to my own package and compile it, at least not as-is. I wanted to create my own version of `strings.Builder` that has a `Rewind()` method to allow slicing one or more characters from the internal `buf` buffer, e.g.: https://github.com/golang/go/blob/master/src/strings/builder.go#L23 <https://github.com/golang/go/blob/master/src/strings/builder.go#L23> func (b *StringBuilder) Rewind(n int) { if n > len(b.buf) { n = len(b.buf) } b.buf = b.buf[:len(b.buf)-n] } I could of course modify the code of `strings.Builder` to replace `bytealg.MakeNoZero()` but then I would have a less performant string builder, especially for larger strings: https://github.com/golang/go/commit/132fae93b789ce512068ff4300c665b40635b74e <https://github.com/golang/go/commit/132fae93b789ce512068ff4300c665b40635b74e> Any insight into `bytealg.MakeNoZero()` would be appreciated. -Mike -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/FEC2DD8C-7664-425E-8905-A21D49257975%40newclarity.net.
