On Fri, May 3, 2019 at 11:19 AM <lgod...@gmail.com> wrote:
>
> Am I missing something ??
> When u say :
> For any function F and some type T declared as func F(x ...T) {}
> within F x will have type []T. You can call F with a slice s of type []T as
> F(s...)
>
> Why is this needed ?? What's the point of using this "crypto-syntax" rather
> than just declaring the function as func F(x [ ]T) { }
It permits passing a list of arguments without requiring them to be
explicitly assembled into a slice.
For example, the declaration of fmt.Printf is
func Printf(format string, a ...interface{}) (n int, err error)
The use of `...` is what permits you to write
fmt.Printf("%d %d", a, b)
rather than having to write
fmt.Printf("%d %d", []interface{}{a, b})
Ian
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