Loops

See integer loops docs

for var=exp1,exp2,exp3 do
  something
end
-- find a value in a list
local found = nil
for i=1,a.n do
  if a[i] == value then
    found = i      -- save value of `i'
    break
  end
end
print(found)

Functions As Variables

function a(x)
  print(x)
end
function b(x)
  print(x..x)
end

-- functions can be passed as variables
function comb(f,g)
  f("world")
  g("flibble")
end
a("hello1")
b("hello2")
comb(a,b)

--[[
outputs
hello
hellohello
world
flibbleflibble
--]]

Integer String Conversion

tostring(42)
tonumber("42")

String formatting

a = string.format("%03d",42)