Heyo,
I'm wondering whether there's any official preference between the following
two approaches for implementing a set (of, e.g., strings) in go:
greetings := map[string]bool {
"hi": true,
"hello": true,
}
greetings := map[string]struct{} {
"hi": {},
"hello": {},
}
Effective Go <https://golang.org/doc/effective_go.html#maps> suggests the
former:
"A set can be implemented as a map with value type bool. Set the map entry
> to true to put the value in the set, and then test it by simple indexing."
But the latter appears to be more memory efficient, and I've seen both in
practice.
Thanks!
Brendan
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