Wintermute questions

Wintermute answers

• Access a type in a variadic template by index
• hash using sha1sum using awk
• Exception class with a char* constructor
• 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