120 posts
Posted 06 March 2013 - 11:22 AM
currently i'm using
if var[varname] == nil then ...
but its giving me the attempt to call nil error , witch with what i'm doing i expect that variable not to exist yet. but i need to be able to make sure it doesn't exist before continuing on with the rest of the program.
simply put, how can i see if a var in a table exists when i expect it not to exist?
1511 posts
Location
Pennsylvania
Posted 06 March 2013 - 11:32 AM
Either your table does not exist or you are doing something wrong.
This works fine for me.
if variable[num] == nil then
--This is a fake!
else
--It's ok, this is real!
end
It would help if we had some code to work with ;)/>
EDIT: Technically the "var" is a table :P/> So, get rid of the above code :)/>:
if table[var] == nil then
--IT'S A PHAT PHONY!
else
--We chill...
end
120 posts
Posted 06 March 2013 - 11:35 AM
what i'm doing is adding string based keys to a table when an event occures, but b4 that event it has to check to make sure that key doesnt alredy exist
http://pastebin.com/YGTZ8y3y[edit i noticed something farther down thats wrong, but line 57 and 60 are the problematic ones]
1511 posts
Location
Pennsylvania
Posted 06 March 2013 - 11:41 AM
Ok what is "v"?
if v[event[2]] == nil and not confirmation then
EDIT:
confirmation = false
if v[event[2]] == nil and NOT? confirmation then
Are you saying if nil and not false?
120 posts
Posted 06 March 2013 - 11:46 AM
v is a table containing the returned values from a os.pullEventRaw()
crap , that may be the problem *fixes v to become votes
1511 posts
Location
Pennsylvania
Posted 06 March 2013 - 11:50 AM
v is a table containing the returned values from a os.pullEventRaw()
crap , that may be the problem *fixes v to become votes
Nice, that would be the problem :P/>
120 posts
Posted 06 March 2013 - 11:53 AM
yeah lol *feels like a noob again* :P/>
way too used to simple letter variables , need to drop that habbit
1511 posts
Location
Pennsylvania
Posted 06 March 2013 - 11:59 AM
yeah lol *feels like a noob again* :P/>
way too used to simple letter variables , need to drop that habbit
Everyone makes mistakes (Well normal people), even I do it sometimes. Hence the reason we have Ask A Pro ;)/>
Lol, when did you get in the habbit of using simple letter variables? (Off track) Oh well, just glad I could be of some help :)/>
EDIT: Impressed you didn't get mixed up with the io and fs libraries like most people… Time to go learn Objective-C! (Like that's gonna happen :P/>)
120 posts
Posted 06 March 2013 - 12:10 PM
i kinda got into it first for c++ style for statements
for (int i = 0; i <= 100; i++) { ect...
then lazyness took over causing the rest to follow
i've used both b4, usualy i go with fs unless i need to flush info to a file that wont ever close until the program exits
1511 posts
Location
Pennsylvania
Posted 06 March 2013 - 12:12 PM
i kinda got into it first for c++ style for statements
for (int i = 0; i <= 100; i++) { ect...
then lazyness took over causing the rest to follow
i've used both b4, usualy i go with fs unless i need to flush info to a file that wont ever close until the program exits
Lol, nice. Definately break that nasty habbit :P/> I use the io library since it is used outside of CC and therefore a better habbit ;)/>