Integer Question

[EoW.chips]

Hey,

how can i set a Variable like this:

MUI_3 = Integer -nothing-

How to set an Integer Variable to -nothing- ?

Thanks for help

 

[Darthfett]

Hey,

how can i set a Variable like this:

MUI_3 = Integer -nothing-

How to set an Integer Variable to -nothing- ?

Thanks for help

You cannot. 0 is the value you would want to use. You essentially need to reserve a specific value and treat that one as a "NULL". With vJASS, struct(0) is used as the NULL value.

 

[EoW.chips]

It's possible... I have an example map where it is. But i can't copy that variable

 

[EoW.chips]

Bump !

 

[GFreak45]

darthfett already explained it, it simply is not possible, the reason why some variables can be set to null and others (numbers) can not, is because other variables contain a handle (a number generated by wc3) which is never 1, so setting that variable to null actually just sets it to 0 which wc3 treats as a null handle, integers/reals cant be set to null because well... 0 is null, the only way to get an integer/real variable that equals nothing is with locals:
[ljass]local integer i[/ljass] local variables like this that do not have an initialized value have no value, but they cause errors if you try to reference them like an integer until they are set, ie:
[ljass]local integer i = 0[/ljass] is an initialized variable

function Example takes nothing returns nothing
    local integer i = 0
    set i = i + 1 //works
endfunction

function Example takes nothing returns nothing
    local integer i
    set i = i + 1 //doesnt work, cuz i = ??? so set i = ??? + 1 = ???... it cant do it
endfunction