[Lua] Tips & Tricks

[Syntax]

Just a simple thread where we can post Lua tricks, and some tips that the lua documentation is unclear on.

Trick #1: Swapping variables

local a, b = b, a

Tip #1: Difference between ipairs and pairs

local foodTableIPAIRS = {"banana", "banana", "vegetable"}
local foodTablePAIRS = {["apple"] = "fruit", ["banana"]="fruit", ["lettuce"]="vegetable"}
 
print("Pairs:\n")
for k, v in pairs(foodTablePAIRS) do
    print(k .. " = " .. v .. "\n")
end
print("\nIpairs:\n")
for k, v in ipairs(foodTableIPAIRS) do
    print(k .. " = " .. v .. "\n")
end

output:

Pairs:
apple = fruit
banana = fruit
lettuce = vegetable

Ipairs:
1 = fruit
2 = fruit
3 = vegetable

 

[richux]

For me ur ipairs example didn't print anything at all.

 

[Syntax]

yah sorry the script wasn't really clear on the type of table needed. I updated the script to show this.

 

[J.Dre]

Are you trying to get some respect back after leaving for V.Apus? You keep making all of these threads all of a sudden, out of no where "there's Syntax!"

Welcome back, and thanks for helping.

Good luck.

 

[Syntax]

no... I still support VAPus and I'm a global mod over there. I used to make threads like this all the time. It just so happens I have alot of free time

 

[Optus]

Quick question sorry im new to scripting how does the output show the print function? In the tibiaclient chatbox like a normal message?

 

[Bogart]

Quick question sorry im new to scripting how does the output show the print function? In the tibiaclient chatbox like a normal message?

No, it'd print it on TFS console, iirc.

 

[Optus]

No, it'd print it on TFS console, iirc.

Oh ok thanks.

 

[richux]

Quick question sorry im new to scripting how does the output show the print function? In the tibiaclient chatbox like a normal message?

You can also try it here: Lua: demo

 

[joshuawilson]

hi, i used your ipairs, but i didnt got any output.. error appeared.. thanks anyways..