Custom Methods

Questions
1

obviously this return nil. But I would like to know if I can do something like

Table1:AddArguments()
Table2:AddArguments()

function setup()
    
    Table1 = {10,10,10}
    Table2 = {20,20,20}
    
    Table1:AddArguments()
end


Undefined = class()

function Undefined:AddArguments()
    x = 0
    for i,v in pairs(self) do
        x = x + v
    end
    print(x)
end
2

@FearMe2142 I’m not exactly sure what you’re asking or trying to do with your code. Are you trying to add more entries to an existing table, or add a value to an existing value already in the table.

3

@FearMe2142 Here’s an example that adds an entry to a table and adds a value to each table entry.

function setup()
    Table1 = {10,10,10}
    
    t1=Undefined(Table1)    -- create instance t1
    
    print("Add an entry")
    t1:AddArguments(25)
    t1:print()
    
    print("Add a value")
    t1:AddValue(100)
    t1:print()
end

Undefined = class()

function Undefined:init(t)  -- initialize the table
    self.tab=t
end

function Undefined:AddArguments(val)    -- add another entry to the table
    table.insert(self.tab,val)
end

function Undefined:AddValue(val)    -- add a value to each table entry
    for z=1,#self.tab do
        self.tab[z]=self.tab[z]+val            
    end
end

function Undefined:print()  -- print each table entry
    for a,b in pairs(self.tab) do
        print(a,b)
    end
end
4

@dave1707

Thank you this is fantastic! I was trying to add a value to an existing table.

One other question, is there a comparison to identify whether something is a table or string like:

If Table1 == type(Table) then
    --blah blah
End
5 
function setup()
    tab={"abc"}
    str="abc"
    
    print(type(tab))
    print(type(str))
    
    if type(tab)=="table" then
        print("its a table")
    end
    
    if type(str)=="string" then
        print("its a string")
    end
end
6

@dave1707

Thank you very much!