How to compare data of a table

That. How to compare data (I.e. users) in a table with other data (i.e. passwords) in other table?

I made one code with register and login but I cannot make it work

Thanks in advance

Hmm i had one once. all i did was something like this and it worked. Make two tables next to each other. one on top the other on the bottom. use users = {"user1", "user2") and under that use pass = {"pass1", "pass2"} when i did it with this program that worked.

Alerith, on 24 February 2013 - 01:31 PM said:

That. How to compare data (I.e. users) in a table with other data (i.e. passwords) in other table?

I made one code with register and login but I cannot make it work

Thanks in advance

Pastebin your existing code.

Thanks for the response, here is my code:

http://pastebin.com/haZYEm0J

By looking at your code I see what you're trying to accomplish, so I rewrote it slightly.

local Usuarios = {}

while true do
  term.clear() term.setCursorPos(1,1) -- clear screen and set cursor at the top
  print("1. Login")
  print("2. Register")
  print("3. Change password")
  print("4. Exit")
  opc = io.read()

  if opc == "1" then
    term.clear() term.setCursorPos(1,1)
    write("User: ")
    user = io.read()
    write("Password: ")
    pass = read("*")
    if Usuarios[user] and Usuarios[user].password == pass then -- check to see if the user exists and then compare the password with the given one
      print("Access")
    else
      print("Denied")
    end
    sleep(1)
  end
  if opc == "2" then -- could put elseif here but because im using notepad++ i changed it to an if
    term.clear() term.setCursorPos(1,1)
    repeat
      write("User: ")
      user = io.read()
      write("Password: ")
      pass = read("*")
      write("Rewrite password: ")
      pass2 = read("*")
      if pass ~= pass2 then
        print("Passwords don't match")
      end
      Usuarios[user] = {} -- make a new user table called user e.g if user was 'ham' the table would be called ham
      Usuarios[user].password = pass -- gives that user a password variable inside the table
      print("Created")
      sleep(1)
    until pass == pass2
  end
end

This way will allow you to have as much users as you want, but when the in-computer is restarted the table will be lost.
Basicly the square brackets are used to compare the table data.

I hope this helps!

Woah, thank you very much! =)
And thank you to all too :D/>

That helped me

Usuarios[user] = {} -- make a new user table called user e.g if user was 'ham' the table would be called ham
      Usuarios[user].password = pass -- gives that user a password variable inside the table

Why make a whole new table, why not just

Usuarios[user] = pass

remiX, on 24 February 2013 - 10:27 PM said:

Usuarios[user] = {} -- make a new user table called user e.g if user was 'ham' the table would be called ham
	  Usuarios[user].password = pass -- gives that user a password variable inside the table

Why make a whole new table, why not just

Usuarios[user] = pass

But that would replace the user for the password, right?

Alerith, on 24 February 2013 - 11:10 PM said:

remiX, on 24 February 2013 - 10:27 PM said:

Usuarios[user] = {} -- make a new user table called user e.g if user was 'ham' the table would be called ham
	  Usuarios[user].password = pass -- gives that user a password variable inside the table

Why make a whole new table, why not just

Usuarios[user] = pass

But that would replace the user for the password, right?

No it would add the username 'user' with the pass 'pass'
LIke this:

tab = {
	["derp"] = 'derpspassword'
}

user = 'remiX'
pass = 'pass'

for username, password in pairs( tab ) do
	print( username .. ' - ' .. password )
end
print()
tab[user] = pass

for username, password in pairs( tab ) do
	print( username .. ' - ' .. password )
end

It would first print derp - derpspassword
and then
derp - derpspassword
remiX - pass

I did like that so more information could be kept about the user, if you wanted to add some in later.

But it doesn't really matter.

to store more info about the user…

userdata={}
userdata["gopher"]={password="derp", accessLevel=5}
userdata["darkrising"]={password="herp", accessLevel=3}

for k,v in pairs(userdata) do
  print(k..": pw="..v.derp..", access level="..v.accessLevel)
end

write("name>")
local name=read()
write("pw>")
local pw=read()

--//make sure name exists in the table before accessing members in the user's sub-table
--//otherwise you'll get attempt to index nil errors
if userdata[name] and userdata[name].password==pw then
  print("valid login.")
else
  print("Incorrect password!!")

GopherAtl, on 25 February 2013 - 07:51 AM said:

to store more info about the user…

userdata={}
userdata["gopher"]={password="derp", accessLevel=5}
userdata["darkrising"]={password="herp", accessLevel=3}

for k,v in pairs(userdata) do
  print(k..": pw="..v.derp..", access level="..v.accessLevel)
end

write("name>")
local name=read()
write("pw>")
local pw=read()

--//make sure name exists in the table before accessing members in the user's sub-table
--//otherwise you'll get attempt to index nil errors
if userdata[name] and userdata[name].password==pw then
  print("valid login.")
else
  print("Incorrect password!!")

Yeah if you want more information about the user then you would make each user have their own table