Is there anything similar to a slice.contains(object) method in Go without having to do a search through each element in a slice?
Is there anything similar to a slice.contains(object) method in Go without having to do
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Is there anything similar to a slice.contains(object) method in Go without having to do a search through each element in a slice?
Mostafa has already pointed out that such a method is trivial to write, and mkb gave you a hint to use the binary search from the sort package. But if you are going to do a lot of such contains checks, you might also consider using a map instead.
It’s trivial to check if a specific map key exists by using the
value, ok := yourmap[key]idiom. Since you aren’t interested in the value, you might also create amap[string]struct{}for example. Using an emptystruct{}here has the advantage that it doesn’t require any additional space and Go’s internal map type is optimized for that kind of values. Therefore,map[string] struct{}is a popular choice for sets in the Go world.