Lua

Lua	http://www.tecgraf.puc-rio.br/lua/



	Description:	"Lua is a powerful, light-weight programming language designed for extending applications. Lua is also frequently used as a general-purpose, stand-alone language." "Lua combines simple procedural syntax (similar to Pascal) with powerful data description constructs based on associative arrays and extensible semantics. Lua is dynamically typed, interpreted from bytecodes, and has automatic memory management, making it ideal for configuration, scripting, and rapid prototyping." Lua has a very small footprint and let's itself very easy embed into other languages.

Factorial

Michael Neumann

function fac(n)
  if n < 2 then
    return 1
  else
    return n * fac(n-1)
  end
end

print(fac(6))

Calculates the factorial. Results 720.

Hello World

Michael Neumann

-- Hello World in Lua

print("Hello World\n")

Prints "Hello World" onto the screen.

Squares (1)

Michael Neumann

-- for var = from, to [, step] do block end
for i = 1, 10, 1 do
  print(i*i)
end

Outputs the squares from 1 to 10.

Squares (2)

Michael Neumann

function range(from, to)
  arr, inx = {}, 0
  for i = from, to do
    arr[inx] = i
    inx = inx + 1
  end
  return arr
end

for index, value in range(1, 10) do
  print(index .. "^2 = " .. value)
end

Outputs the squares from 1 to 10.