How correctly use "self" + colon

[Krizzu]

Hi

It's me again with newbie questions/requests.
I'm wondering if is there anyone who can explain in the simples possible way how to correctly use "self" in functions and mighty Colon.

I readed bunch of guides, tried to do it myself but it seems I didnt get it well.

[coffee]

Hi

It's me again with newbie questions/requests.
I'm wondering if is there anyone who can explain in the simples possible way how to correctly use "self" in functions and mighty Colon.

I readed bunch of guides, tried to do it myself but it seems I didnt get it well.

Very easy. You almost need nothing to do self and use : operator. Just declaring the table

From blackbullet excelent tutorial

http://nova-fusion.com/2012/09/07/lua-f ... rs-part-3/

self
Lua gives us a neat piece of syntactic sugar for calling and defining functions. When you have a function inside a table, you can do stuff like this:

Code: Select all

 t = {}

function t:func(x, y)
  self.x = x
  self.y = y
end

t:func(1, 1)
print(t.x) -- 1

The definition and call translate to:

Code: Select all

function t.func(self, x, y)
  self.x = x
  self.y = y
end

t.func(t, 1, 1)

[Nixola]

Hi

It's me again with newbie questions/requests.
I'm wondering if is there anyone who can explain in the simples possible way how to correctly use "self" in functions and mighty Colon.

I readed bunch of guides, tried to do it myself but it seems I didnt get it well.

Very easy. You almost need nothing to do self and use : operator. Just declaring the table

From blackbullet excelent tutorial

http://nova-fusion.com/2012/09/07/lua-f ... rs-part-3/
self
Lua gives us a neat piece of syntactic sugar for calling and defining functions. When you have a function inside a table, you can do stuff like this:

Code: Select all

t = {}

function t:func(x, y)
  self.x = x
  self.y = y
end

t:func(1, 1)
print(t.x) -- 1

The definition and call translate to:

Code: Select all

function t.func(self, x, y)
  self.x = x
  self.y = y
end

t.func(t, 1, 1)

Small typo, fixed

[coffee]

Small typo, fixed

Ah thanks. I didn't noticed that "t" was not code tagged! Fixed!

And dude, your avatar keeps me confusing! lol

[Krizzu]

If I got function

Code: Select all

t = {}

function t:func(x, y)
  self.x = x
  self.y = y
end

t:func(1, 1)
print(t.x) -- 1

And I will add table X

Code: Select all

X={}

and then

Code: Select all

X:func(1, 1)
print(X.x)

Will it print 1?

[Nixola]

No, because X:func() doesn't exist yet; you still have to declare it

[coffee]

As Nixola said.

Check this now:
http://www.lua.org/pil/16.html
and then
http://www.lua.org/pil/16.1.html
and eventually
http://www.lua.org/pil/16.2.html