Wintermute questions

Wintermute answers

• Variadic macros: expansion of pasted tokens
• undefined reference to vtable when using interface
• Efficient non-greedy method of returning multiple lines between patterns
• (void)r++ requirement of input iterator
• sed remove first pattern match only
• Replacing a repeating number in a file with random numbers
• Execute function every n commands in bash
• How to call a function depending on template type in C++?
• std::make_pair, c++11 and explicit template parameters [duplicate]
• sed substitute variable contains newline (preserve it)