Long length key in QHash

Question

I want to create a QHash with 64 chars key and about 1 milion records. is it possible ? is any limit on size of key? i got conflict in records.

Answer 1

The internal hash size that QHash uses is fixed at the size of uint -- usually at least 32 bits. A million record QHash is not a problem at all. If you're using a custom data type T as the key, make sure that you provide a free standing (not a class member) implementation of uint qHash(const T &), as well as bool operator==(const T& other) or out-of-class bool operator==(const T& first, const T& second).