FreeBirdLjj

#include <iostream>

#define REPL(expr)	std::cout << "> " << #expr << std::endl << (expr) << std::endl

int main()
{
	int a = 1, b = 2;
	REPL(a + b);
	// print out:
	//   > a + b

FreeBirdLjj

(define (y-combinator fn)
  ((lambda (func)
     (func func))
   (lambda (f)
     (fn (lambda args
           (apply (f f) args))))))

FreeBirdLjj

print "Hello, switch"

-- If the default case does not have to be handled, we can use the following auxiliary function:
local function switch(value)
	-- Handing `cases` to the returned function allows the `switch()` function to be used with a syntax closer to c code (see the example below).
	-- This is because lua allows the parentheses around a table type argument to be omitted if it is the only argument.
	return function(cases)
		
		-- The default case is achieved through the metatable mechanism of lua tables (the `__index` operation).
		setmetatable(cases, cases)