1.lua基本语法
没有被local修饰的变量为全局变量
2.函数
function name(param)
body
end
name = function(param)
body
end
可变参数
function name(…)
end
function name(v1, v2,…)
end
function myTest(a, b, ...)
print(a..b)
print(arg)
return 1,2
end
myTest(1,2,3,4)
3.判断
if 表达式 then
block
end
if 表达式 then
else
end
if 表达式 then
elseif 表达式 then
else
end
function compare(i, j)
if i > j then
print(i, ">", j)
elseif i < j then
print(i, "<", j)
else
print(i, "==", j)
end
end
compare(1,2)">")>
4.循环
while…do
repeat…utile
for…do
for…in…do
do
local i = 10
while i > 0 do
print(i)
i = i - 1
end
end
do
local i = 1
repeat
print(i)
i = i + 1
until i > 10
end
for k = 0, 10, 2 do
print(k)
end
function fib(n)
if n > 0 and n <= 2 then
return 1
else
return fib(n - 1) + fib(n - 2)
end
end
print(fib(7))
function fib2(n)
a, b = 1, 1
if n > 0 and n <= 2 then
b = 1
else
for k = 3, n do
a, b = b, a + b
end
end
return b
end
print(fib2(7))>
5.table
array = {v1, v2, …}
array[index] index >= 1
array = {v1, key = value}
array[index] array[“key”] array.key
arr = {1, "hi", k1 = "are", k2 = "you", k3 = "ok", "over"}
for k, v in pairs(arr) do
print(k..": "..v)
end