[HELP] Self.

[iwalidza]

Sometimes I see people making a script and using something like .self
What is this thing I want to explain to him and why it is used and its benefits

[Patrick]

I think you talking about metatables.

https://wiki.multitheftauto.com/wiki/OOP_in_Lua

 

 

[iwalidza]

3 minutes ago, Patrick said:

I think you talking about metatables.

https://wiki.multitheftauto.com/wiki/OOP_in_Lua

 

 

Yup this Meta tables

 

[The_GTA]

1 hour ago, iwalidza said:

Yup this Meta tables

You don't need metatables for the self keyword. Take a look at this small sample:

local police = {}

-- Take a look: we use the "self" keyword here!
function police:setName(name)
  self.name = name
end

function police:getName()
  return self.name
end

police:setName("Las Venturas Police Department")

outputDebugString("Name of Police HQ: " .. police:getName())

Formal description: if you specify a "method" of a table in Lua, then inside the function body you can access the hidden local variable "self" which points to the table itself. This self variable is the first argument to the function specification of the method. Thus an equivalent way of writing above script is:

local police = {}

-- Here we explicitly specify the self.
function police.setName(self, name)
  self.name = name
end

function police.getName(self)
  return self.name
end

police:setName("Las Venturas Police Department")

outputDebugString("Name of Police HQ: " .. police:getName())

Hope this helps!

[iwalidza]

3 hours ago, The_GTA said:

You don't need metatables for the self keyword. Take a look at this small sample:

local police = {}

-- Take a look: we use the "self" keyword here!
function police:setName(name)
  self.name = name
end

function police:getName()
  return self.name
end

police:setName("Las Venturas Police Department")

outputDebugString("Name of Police HQ: " .. police:getName())

Formal description: if you specify a "method" of a table in Lua, then inside the function body you can access the hidden local variable "self" which points to the table itself. This self variable is the first argument to the function specification of the method. Thus an equivalent way of writing above script is:

local police = {}

-- Here we explicitly specify the self.
function police.setName(self, name)
  self.name = name
end

function police.getName(self)
  return self.name
end

police:setName("Las Venturas Police Department")

outputDebugString("Name of Police HQ: " .. police:getName())

Hope this helps!

thank you so much for this tutorial

[The_GTA]

1 minute ago, iwalidza said:

thank you so much for this tutorial

No problem. I am happy to hear about your thankfulness