On Sun, Jan 9, 2022 at 4:30 PM jlfo...@berkeley.edu <jlforr...@berkeley.edu>
wrote:
>
>
> On Sunday, January 9, 2022 at 3:07:18 PM UTC-8 bse...@computer.org wrote:
>
>> Note that a with a map[string]string, the code:
>>
>> m[s]=s
>>
>> The contents of the string s are not duplicated, only the string header s
>> is.
>>
>
> I didn't know this. That's very good to know.
>
> What about this:
>
> package main
>
> type word struct {
> s string
> refcnt int
> }
>
> var w1 = word {"moby", 1}
>
> func main() {
> m := make(map[string]word)
> m["moby"] = w1
> }
>
> This is a little closer to what I'd like to do.
> How many times would the string "moby" be stored?
>
If you write it as follows, the string "moby" will have only one copy:
m[w1.s]=w1
This will only duplicate the string header `s`, not the contents of 's'.
>
> Thanks,
> Jon
>
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