Lua编程示例（一）：select、debug、可变参数、table操作、error

function test_print(...)

for i=1,select("#",...) do

print(i,select(i,...))

end

end

test_print(11,12,13,14)

print()

print(debug.traceback())

print()

function test(...)

for i=1,arg.n do

print(i.."t"..arg[i])

end

end

test("a",2,34,234)

print()

g={}

table.insert(g,{

name="Clairs",

level = 70,

})

table.insert(g,{

name="SEGA",

level = 35,

})

table.insert(g,{

name="Millber",

level = 50,

})

function myprint()

for i,v in ipairs(g) do

print(i,v["level"],v.name)

end

end

myprint()

function comp(a,b)

return a.level<b.level

end

table.sort(g,comp)

print()

myprint()

print()

function foo(str)

if type(str) ~= "string" then

error("string error!",2)

end

end

--foo({x =1 })

tb1={ "asdf","bate","game",one="heihei"}

table.insert(tb1,3,"haha")

table.remove(tb1,2)

for i,v in ipairs(tb1) do

print(v)

end

print(#tb1)

运行结果为：

1 11 12 13 14

2 12 13 14

3 13 14

4 14

stack traceback:

my_test.lua:12: in main chunk

[C]: ?

1 a

2 2

3 34

4 234

1 70 Clairs

2 35 SEGA

3 50 Millber

1 35 SEGA

2 50 Millber

3 70 Clairs

asdf

haha

game

3