CRTP: What It Is, Some History and Some Uses

Highlights

• Curiously Recurring Template Pattern

  template <class T>
  class Base
  {
    // methods within Base can use template to access members of Derived
  };
  class Derived : public Base<Derived>
  {
    // ...
  };
  

• Allows the base class to safely access methods of derived class via static_cast<const T*>(this) or static_cast<const T&>()
• Still be careful calling these methods in constructor!

The video

• C++ Weekly - Ep 259 - CRTP: What It Is, Some History and Some Uses

The channel

• Cᐩᐩ Weekly With Jason Turner
• Every week a new video about 10 minutes long