What (not) to do in a constructor

Question

I want to ask you for your best practices regarding constructors in C++. I am not quite sure what I should do in a constructor and what not.

Should I only use it for

Answer 1

A constructor is expected to create an object that can be used from the word go. If for some reason it is not able to create a usable object, it should throw an exception and be done with it. So, all supplementary methods/functions that are necessary for an object to work properly should be called from the constructor (unless you want to have lazy-loading like features)