On Tue, Jul 26, 2016 at 6:35 AM, Dave Cheney <d...@cheney.net> wrote:
> If saving one byte per entry is important for your application, the latter is
> your choice. The former has nicer properties that you can use the single
> value form of map access,
>
> if m[key] {
> // found
> }
>
> I'd say the former is the right choice for 97.25% of general use cases.
I'd agree with this, except that I don't trust that one guy in the
office not to sneak past something that somehow puts a false in the
map and causes bugs later. Arguably that's a review problem, but even
so one or two extra bytes of code (`_, ok = m[key]; ok') seems like a
small price to pay for safety guarantees and to save a few bytes of
memory.
(though as you said, it hardly matters either way; I just prefer to
recommend the struct{} version to new people)
—Sam
--
Sam Whited
pub 4096R/54083AE104EA7AD3
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