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What is this and this?

5 replies

What is this and this?

Eternal
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23.07.12 11:47:56 am

Hello

I have 2 questions with these codes.

1 :

LUA ERROR:sys/lua/test.lua:48: bad argument#1 to 'menu' (number expected,got string)

This is my first question , what is this? it's cause by?

2 :

LUA ERROR:sys/lua/test.lua:48: attempt to concatenate field '1'

This is my second question , what is this? it's cause by?

My code :

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maps = {"de_dust","de_dust2"}
menu("Map Vote,"..maps[1]..","..maps[2].."")

I think my code it's not hard to guess what is this code about.

Thank you.

Re: What is this and this?

Avo
User

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23.07.12 11:54:50 am

First argument of function menu must be ID of player (1-32 or 0 for all players).

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maplist={ [1]="de_dust", [2]="de_dust2" }

--could be also maplist={"de_dust","de_dust2"}

addhook("serveraction","vote")
function vote(id,action)
	if action==3 then
		menu(id,"Vote for map,"..maplist[1]..","..maplist[2])
	end

end

EDITED (addhooh-->addhook)

edited 2×, last 23.07.12 12:25:35 pm

Re: What is this and this?

Eternal
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Offline

23.07.12 12:00:28 pm

Oh , i forget "ID" trustfully maybe it's because of i didn't write and work on Lua for a long time that cause me forget everything

anyway Thank you

Re: What is this and this?

DC
Admin

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23.07.12 12:23:38 pm

Also that

..""

at the end is totally pointless. You attach (..) an empty string ("") this way - which doesn't change anything and just makes your script slower for no reason. Don't do that. Attaching empty strings changes nothing.

Most people seem to do that mistake. Probably because someone started that bullshit and everyone copies the scripts of that person... I'm not sure.

Re: What is this and this?

Eternal
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Offline

23.07.12 01:08:16 pm

Spoiler

I don't know who started this bullshit but since i have ever played this game , i always found (..) in every scripts i used in my server. By the way i haven't ever known that (..) does nothing

Re: What is this and this?

DC
Admin

Offline

23.07.12 01:42:22 pm

No, that's not what I said! You still didn't understand it.
.. = connects two strings. It makes sense.
but .. '' = adds an empty string. This makes no sense!
Example

variable = 'lol, '..'hi!'

variable will have the value: 'lol, hi!' afterwards.

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variable = 'lol'
variable = variable..''

variable will have the value lol. Line 2 does nothing. It adds an empty string. This changes nothing because lol + empty string is still = lol
(you could also use " instead of ' in those samples. It's the same thing)