On Thursday, September 8, 2016 at 10:57:10 PM UTC+8, Ian Lance Taylor wrote: > > On Thu, Sep 8, 2016 at 7:21 AM, T L <tapi...@gmail.com <javascript:>> > wrote: > > > > On Thursday, September 8, 2016 at 9:48:34 PM UTC+8, Jan Mercl wrote: > >> > >> On Thu, Sep 8, 2016 at 3:32 PM T L <tapi...@gmail.com> wrote: > >> > >> > With the enough initial size, the underlying hashtable of the new map > >> > will never need to be realloced in the whole copy process. > >> > >> For example > >> > >> dst := make(map[T]U, len(src)) > > > > > > Will setting the second parameter as len(src) make sure the length of > the > > underlying hashtable is large enough? > > Yes. > > > It looks the official docs doesn't confirm this. > > The docs say "map of type T with initial space for n elements" > (https://golang.org/ref/spec#Making_slices_maps_and_channels). What > else would you want them to say? > > Ian >
Thanks for the confirmation. It would be better to also put "map of type T with initial space for n elements" in the docs for https://golang.org/pkg/builtin/#make. -- 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. For more options, visit https://groups.google.com/d/optout.
