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

时间:2022-09-23 17:09:27
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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:

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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