Basic C++ Idioms / Techniques

Question

Note: marked as community wiki.

In recent days, I\'ve realized how little I know about C++.

Besides:

• using the STL
• implementing RAII

Answer 1

Basic:

• RTTI
• Virtual functions
• shared_ptr etc
• Templates
• Virtual inheriting
• Variadic macros

Also useful:

• Attributes (it depends on your compiler)
• Variadic templates
• Variadic functions
• Constexpr (sorting in compile time / calculating hash of strings etc... but the latter is related to the last section)
• Lambdas

Useful for brainfucking or in special cases:

• CRTP
• SFINAE
• inable_if (type traits)
• Foreach macro
• User-defined literals