-- util.lua
-- Common Lua Function
-- Author: Liu Denghong
-- Date: 20080702

require "liu"

liu.util = liu.util or {version = 0.1;};
liu.util.Print=function(msg)
  print(msg);
end;

-- Min
liu.util.Min = function(a,b)
  return (a<b and a) or b;
end;

-- Max
liu.util.Max = function(a,b)
  return (a>b and a) or b;
end;

-- IsTrue
liu.util.IsTrue = function(a)
  return (a~=false and a~=nil);
end;

-- 只適用于表: a={"liu","deng","hong"};
-- 不適用于記錄型表: b={name="liu", name1="deng", name2="hong"}
-- 等價于ipairs(t)
liu.util.TableIter = function(t)
  local i = 0
  local n = table.getn(t)

  return function ()
    i = i + 1
    if i <= n then return t[i] end
  end
end