12 replies to this topic

[Okyloky9]

If I have a local variable called xxx in an API called yyy is there a way I can pull xxx from the yyy API to a whole new program (lets say zzz)? Something like :

if #yyy.xxx == 0 then
print("No")
else
print("Yes")
end

[KaoS]

make the variable global and it works just like that without the hash

[Okyloky9]

I want to find the length of the variable in the API, how do I do that?

[KaoS]

in the apis file just declare a global variable

xxx="myvar"

then yyy.xxx will return "myvar"

[remiX]

Okyloky9, on 31 January 2013 - 05:12 AM, said:

I want to find the length of the variable in the API, how do I do that?

Okyloky9, on 31 January 2013 - 04:50 AM, said:

If I have a local variable called xxx in an API called yyy is there a way I can pull xxx from the yyy API to a whole new program (lets say zzz)? Something like :

 if #yyy.xxx == 0 then print("No") else print("Yes") end 

That's how you do it, or

string.len(xxx.yyy)
--or 
xxx.yyy:length() (?)

[Okyloky9]

I appreciate all the help but it's still not working. The full code to the API and program is:

local w,h = term.getSize()

function CLocate(Cstring)
  term.clear()
  term.setCursorPos(w/2 - #Cstring/2,h/2)
  print(Cstring)
end

function prompt(string)
  CLocate(string)
  answer = read()
end
 

and the test is just

os.loadAPI("JS")
JS.prompt("What's up?")
if string.len(JS.answer) == 0 then
print("No")
elseif JS.answer == ("The sky.") then
print("That's an old one.")
elseif JS.answer == ("Not much.") then
print("Cool, me too.")
end
 

[KaoS]

try just printing JS.answer

EDIT: wait a second. I see your problem. if the variable is set after execution (in a function after the API is loaded) it is not added

rather just say

local w,h = term.getSize()
function CLocate(Cstring)
  term.clear()
  term.setCursorPos(w/2 - #Cstring/2,h/2)
  print(Cstring)
end
function prompt(string)
  CLocate(string)
  JS.answer = read()
end

Edited by KaoS, 31 January 2013 - 09:50 AM.

[Okyloky9]

There! Thanks KaoS, it's working now. Thanks for the help guys!

[Doyle3694]

1 more thing, string is an API. You are going to do bad overwriting standard API's.

[KaoS]

Doyle3694, on 31 January 2013 - 12:01 PM, said:

1 more thing, string is an API. You are going to do bad overwriting standard API's.

Doyle3694 is 100% right. in this case it wouldn't cause any issues because it is in a 2-line function but I apologize for not pointing that out. avoid overwriting your APIs with other values

[tesla1889]

idk if CC supports this or not, but in vanilla Lua, you can use # on a string to get the length

> #("a string") == 8
true

[KaoS]

yes you can do that in CC

[tesla1889]

KaoS, on 01 February 2013 - 06:37 AM, said:

yes you can do that in CC

nice! thanks