class Closures
{
  Void main ()
  {
    // define a list of functions, which take no arguments and return an Int
    |->Int|[] functions := [,]

    // create and store a function which returns i*i for i in 0 to 10
    (0..10).each |Int i|
    {
      functions.add (|->Int| { i*i })
    }

    // show result of calling function at index position 7
    echo ("Function at index: " + 7 + " outputs " + functions[7].call)
  }
}