Classes.t2t

Classes


%!includeconf: config.t2t

== Introduction ==

Classes are the concrete types of Pool.  Even though most of the focus is on
interfaces if you acutally want to do somthing you eventually need a class.
Classes are passed arround by value.

== Declaring Classes ==
Classes are declared using the ``class`` keyword.
```
class { Foo;
	[[ (int) double (i :int);
		i * 2;
	]]
}
```

== Inheritance and Interfaces ==
To inherit from another class or implement an interface just put the name after
a colon after the class name.

```
class { A;
	[[ foo (); return 1 ]]
}
class { B :A;
	[[ bar (); return 2 ]]
}

[[ (int) main (Array!int);
	var b = new B();

	out.write(b.foo()); // Prints "1".
]]

It is exactly the same for interfaces except of course you have too define the
function.

== Visibility ==

Visibility is the same a module visibility and is explained in [[Visibility]].