string to number = nil

[MAB]

i got a string that is like that for example "1+3", when i do tonumber for that string it returns nil not 4, why? how to fix this?

[IIYAMA]

There are a lot of ways to do this.

local a,b = string.match("1+3","(%d+)+(%d+)") 
outputChatBox(tonumber(a)+tonumber(b)) 

[sanyisasha]

string.match or gsub.

But try not use math in string.

Example: 3+1

a = 3

b = 1

func = "plus"

if func == plus then

c = 3 + 1

end

outputChatBox(a.." + "..b.." = "..c)

[n3wage]

Or even

string = "1+3"; 
number = loadstring ( "return "..string )(); 

[MAB]

let me be more clear.... i got a string that looks like this one "1+2-10/100*60-(1+8)" it isn't simple like "1+3" and that string keeps changing every time... now i need a code that can get the result of all of these strings... is it possible?

by the way... loadstring isn't working

[IIYAMA]

The result of loadstring must be called.

[MAB]

The result of loadstring must be called.

example?

[IIYAMA]

local theSum = "1+3" 
local result = loadstring ( "return "..theSum )(); 
local theNumber = result() -- call 

[MAB]

local theSum = "1+3" 
local result = loadstring ( "return "..theSum )(); 
local theNumber = result() -- call 

note : dataText is a sum...

Error: attempt to call local 'result' (a number value)

code : client :

function getResult () 
    if getElementData(localPlayer,"calculator") == true then 
       local dataText = getElementData(localPlayer,"calculatorText"); 
       local result = loadstring ( "return "..dataText )(); 
       local theNumber = result() 
        if theNumber then 
           setElementData(localPlayer,"calculatorText",theNumber) 
        else 
           setElementData(localPlayer,"calculatorText","Error") 
        end 
    end 
end 
bindKey("num_enter","down",getResult) 

[IIYAMA]

ah I miss read, it was already called. And it did already work.

function getResult () 
    if getElementData(localPlayer,"calculator") == true then 
        local dataText = getElementData(localPlayer,"calculatorText") 
        local result = loadstring ( "return "..dataText ) 
        if result then  
            local theNumber = result() 
            if theNumber then 
               setElementData(localPlayer,"calculatorText",theNumber) 
            else 
               setElementData(localPlayer,"calculatorText","Error") 
            end 
        end 
    end 
end 
bindKey("num_enter","down",getResult) 

Edited December 6, 2015 by Guest

[MAB]

ah I miss read, it was already called. And it did already work.

function getResult () 
    if getElementData(localPlayer,"calculator") == true then 
        local dataText = getElementData(localPlayer,"calculatorText") 
        local result = loadstring ( "return "..dataText ) 
        if result then  
            local theNumber = result() 
            if theNumber then 
               setElementData(localPlayer,"calculatorText",theNumber) 
            else 
               setElementData(localPlayer,"calculatorText","Error") 
            end 
        end 
    end 
end 
bindKey("num_enter","down",getResult)l 

OMG thanks a lot man... my resource is almost done now... do you have a facebook account? i want to add you

[IIYAMA]

My Facebook account is not for MTA, but you can pm me your skype name instead.

[MAB]

My Facebook account is not for MTA, but you can pm me your skype name instead.

removed skype but anyway look at the script after i finished it.. here