constructor question
what is the difference between this
also what do you called it when you do this^
and this
Something::Something(obj& newO) : O(newO){} also what do you called it when you do this^
and this
Something::Something(obj& newO){ O = newO }
In the first case, O is constructed with the parameter newO.
In the second case, O is default-constructed then newO is assigned to it.
Generally the first is preferred as it has less actions associated with it, and in fact is the only way to do it if O didn't happen to have a default constructor.
In the second case, O is default-constructed then newO is assigned to it.
Generally the first is preferred as it has less actions associated with it, and in fact is the only way to do it if O didn't happen to have a default constructor.
Wouldn't O need a convert constructor or something for that to work?
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