gsub function

Hi,

I'm doing a turtle program for minning but i have a trouble with the gsub function…

I want to remove a string in another sting so here is my problem (line 271) :

posDesMinerai = posDesMinerai:gsub(posToBase..","..hauteur..","..largeur..";")

where posToBase, hauteur and largeur are int, posDesMinerai is a string like that "0,1,5;1,2,-1;"

The error is :

minning:271: bad argument :
string/function/table expected

the posDesMinerai var may had already be cut by a gsub.

So please help me :)/>/>

PS : I'm frensh so in the code there is some words in french and oters in English ^^

And we need the full code

I will not share the full code (maybe i will but only when it will be finished), i can show you the vars value

posToBase = 0
[...]
posToBase = posToBase + 1

hauteur = 0
[...]
hauteur = hauteur + 1

largeur = 0
[...]
largeur = largeur - 1

posDesMinerai = string.char()
posDesMinerai = posDesMinerai..(posToBase + 1)..","..hauteur..","..largeur..";"

After i split posDesMinerai but it not interfere whit the var just use it.

Then I'm sorry.
We can't help unless the full code is given

there is nothing wrong with this part

btw, use

 tags! :)/>/>

gsub needs 2 parameters, a pattern to match and a value to replace that pattern with. Example:

local str="foo"
str=str:gsub("o","0")
print(str)

output:

f00

to replace with nothing you need to put an empty string for 2nd param

local str="abc"
str=str:gsub("b","")
print(str)

outputs:

ac

Fiery Arcanine, on 17 November 2012 - 03:23 AM said:

Then I'm sorry.
We can't help unless the full code is given

Speak for yourself. Can't you be a bit more understanding?

Fiery Arcanine, on 17 November 2012 - 03:23 AM said:

there is nothing wrong with this part

How isn't there?

First off, this isn't correct:

posDesMinerai = string.char()

Should this be:

posDesMinerai = string.char(posDesMinerai)

?

Second, I'm not sure where you're going with this, but this line:

posDesMinerai:gsub(posToBase..","..hauteur..","..largeur..";")

Should probably be something along the lines of:

local ptB1,h1,l1,ptB2,h2,l2 = posDesMinerai:gfind("(%d),(%d),(%d);(%d),(%d),(%d)")

Not sure about escaping special characters right now.

If you meant to split "x1,y1,z1;x2,y2,z2" to "x1,y1,z1" and "x2,y2,z2" separately then you could try something like this:

local str1,str2 = posDesMinerai:gsub("(%w);(%w)")

Or something.

GopherAtl, on 17 November 2012 - 03:26 AM said:

gsub needs 2 parameters, a pattern to match and a value to replace that pattern with.

Thanks you very much !
I forget to put the second parameter…
But now the code is working =)

Orwell, on 17 November 2012 - 03:39 AM said:

First off, this isn't correct:

posDesMinerai = string.char()

Should this be:

posDesMinerai = string.char(posDesMinerai)

?

Second, I'm not sure where you're going with this, but this line:

posDesMinerai:gsub(posToBase..","..hauteur..","..largeur..";")

Should probably be something along the lines of:

local ptB1,h1,l1,ptB2,h2,l2 = posDesMinerai:gfind("(%d),(%d),(%d);(%d),(%d),(%d)")

Not sure about escaping special characters right now.

If you meant to split "x1,y1,z1;x2,y2,z2" to "x1,y1,z1" and "x2,y2,z2" separately then you could try something like this:

local str1,str2 = posDesMinerai:gsub("(%w);(%w)")

Or something.

posDesMinerai = string.char()

With that i just want to clear the string.

For the split function I've find that on internet :

function mySplit(inputstr, sep)
		if sep == nil then
				sep = "%s"
		end
		t={} ; i=1
		for str in string.gmatch(inputstr, "([^"..sep.."]+)") do
				t[i] = str
				i = i + 1
		end
		return t
end

That's work pretty well !


Thanks all for your help :)/>/>