212 posts
Location
Somewhere in this dimension... I think.
Posted 21 August 2015 - 01:49 AM
I am kinda derping and… well… kinda having a program derp.
I made 2 quick programs ot test variable access, I orignally intended to keep this off the forums.
File: variable
local id = idGet
function printID()
print(type(id).." "..type(idGet))
print(id)
end
File: variableTest
idGet = 5
os.loadAPI("variable")
idGet = 7
id = 6
variable.printID()
print(id)
returns "nil nil"
returns ""
returns "6" (as expected)
And if you wanna not debug this code just answer this question: Would it return 5 or 7 optimally?
Edited on 20 August 2015 - 11:50 PM
3057 posts
Location
United States of America
Posted 21 August 2015 - 01:56 AM
If you want to set a value in an API, make a function in the API do it.
local id
function printID()
print( type( id ) )
print( id )
end
function setID( n )
if type( n ) == "number" then
id = n
else
error( "Expected number, got " .. type( n ), 2 )
end
end
os.loadAPI( "variable" )
variable.setID( 5 )
variable.printID()
variable.setID( "Hello!" ) --#error
Edit: Fixed derpy post (internet issues)
Edited on 20 August 2015 - 11:57 PM
212 posts
Location
Somewhere in this dimension... I think.
Posted 21 August 2015 - 01:58 AM
That wasn't the intention. I wasn't 100% sure how variable accessing worked though you may have inadvertently failed to explain it and succeeded at the same time. I was trying to figure out if I localize the variable on load of the API I could lock it down preventing easy overwritting.
3057 posts
Location
United States of America
Posted 21 August 2015 - 02:00 AM
If you make a variable local to the API, it cannot be changed afterward (by other programs). The only exception would be tables, because if you simply do
local my_tbl = tbl
my_tbl will contain the pointer that tbl did previously. Setting "tbl" in another program will not change my_tbl, but changing tbl[1] will change my_tbl[1].
Any questions?
Edited on 21 August 2015 - 12:00 AM
212 posts
Location
Somewhere in this dimension... I think.
Posted 21 August 2015 - 02:02 AM
Thanks. Very useful for what I am trying to do. Makes my life much easier :)/>