Sample implementation of while loop with additional else branch, if loop doesn't get executed (in Fancy).

while_else.fy

class Object {
  def while: condition do: body else: alternative {
    if: (condition call) then: {
      body call
      while: condition do: body
    } else: alternative
  }
}

# usage:
while: { 100 random > 25 } do: {
  "Got a random number > 25" println
} else: {
  "Failed to get a random number > 25" println
}