AMDG On 03/22/2014 04:10 PM, Samuel Christie wrote:
Next problem I'm having though is using it with an erasure that can be used to store anything implementing insert and count as in a std::unordered_set. I've tried the following simple test, but it seems to have trouble converting between 'int' and the '_value' placeholder type.
This is a bit tricky. I think, first you need to be very clear about exactly what you want. When you call history.count(1), the fact that history holds an unordered_set<int> has been lost. The library has no way to know at compile time the value_type is int. So, what do you want to happen if I write: history.count("a string"); a) Just don't do that. (i.e. undefined behavior) b) return 0; since history obviously doesn't contain any strings. c) An exception saying that you tried to pass the wrong type. d) Something else? In Christ, Steven Watanabe