Lua练习11-“匿名函数”作为函数参数

function TestFun(tab, fun)
    for k,v in pairs(tab) do
        print(fun(k, v))
    end
end

tab = {key1 = "value1",key2 ="value2",key3 = "value3",key4 = "value4"}
TestFun(tab, function(key, value)
    return key.."="..value
end)