lua环境搭建

wget http://www.lua.org/ftp/lua-5.3.0.tar.gz      
tar xf lua-5.3.0.tar.gz
cd lua-5.3.0
make linux
sudo make linux install

test
lua -e "print('hello')"

hello.lua
print("hello lua.\n")

lua hello.lua

test

table.lua

a = {'a', 'b', 'c'}
n = table.getn(a)
print(n)

报错

lua: table.lua:2: attempt to call a nil value (field 'getn')
stack traceback:
	table.lua:2: in main chunk
	[C]: in ?

原来table.getn在5.2这个版本中就被移除了 详情

修改代码

a = {'a', 'b', 'c'}
n = #a 
print(n)

attempt to call a nil value (global 'setfenv')

setfenv is deprecated in Lua 5.2. Someone has created compatible functions for Lua5.1/5.2

setfenv在5.2版本中已经建议不在使用了

详情

https://code.google.com/p/slt/issues/detail?id=1