c++11 tests.

lambdas.cpp

#include <iostream>

using namespace std;

/* Test the lambda feature from c++11 */
/* /Soft/mag/dev/tools/gcc-4.7.1/bin/g++ --std=c++11 lambdas.cpp && ./a.out */

int main()
{
  cout << "hello world." << endl;
  int i = 3;
  
  // When not mutable, this is a stateless functor.
  auto e = [=] /*() mutable*/ { cout << "hello world from a non mutable lambda [" << i << "]. " << endl; };
  e(); e(); e();
  
  // When declared mutable, you must introduce an empty parameter list!
  auto f = [=] () mutable { cout << "hello world from a lambda [" << i++ << "]. " << endl; };
  f();  f();  f();  f();  f();  f();
}