What are some C++ related idioms, misconceptions, and gotchas that you've learnt from experience?

Question

What are some C++ related idioms, misconceptions, and gotchas that you\'ve learnt from experience?

An example:

class A
{
  public: 
  char s[1024];
  cha         


        

Answer 1

Do not prefer to use shared_ptr unless needed. Prefer using C++ references and unique_ptr instead. shared_ptr is a performance hog and makes the code look more complex than it is. Normally this won't be an issue, except for the unusual attractiveness of shared_ptr and its contagious nature.