lua-users home
lua-l archive

[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index] [Thread Index]

Just gonna mention, FusionScript has a syntax similar to this. When using classes, you can specify a "class" to pull a "method" from, so that obj:class_method<Class>() calls Class.class_method(obj); you can do something similar with obj.class_method<obj.class>() if you don't have a "class table" you can pull the method from.

On Tue, Feb 28, 2017 at 7:10 PM Soni L. <> wrote:
So, Lua has very limited OOP:

object:method() --> object.method(object)

But, there are other forms of OOP which are useful:


These could be added to Lua as a new syntax sugar, the `:.` syntax:


I believe Lua would benefit from this. Sure, you can just keep a
reference to the object in object.system/object.trait, but then you
can't dynamically add new arbitrary systems/traits:

object.trait = sometraitimpl
object.trait:method() -- wait, why are you not modifying my `object`?

object.system = somesystem
object.system:method() -- ??? you're supposed to modify `object` D:

object.system.ref = anotherobject -- brokenpatching at its finest

And this is why I think it's a good idea.

This could also support any level of nesting:

a.b.c:d.e.f.g() --> do local c = a.b.c; c.d.e.f.g(c) end -- note how
`a.b.c` is only evaluated once

Disclaimer: these emails may be made public at any given time, with or without reason. If you don't agree with this, DO NOT REPLY.


Ryan <>
Software Developer / System Administrator