The Science of Programming/SwayPresentations/Objects/ClassAndObjectComponents2

Class and Object Components, continued

Here's an attempt...

 var z = { var z_shared = { var count = 0; this; }; function z() { var shared = z_shared; var count = 0; shared . count += 1; count += 1; this; } }; function x() { extends(z()); } 

Testing...

 inspect(x() . shared . count); inspect(x() . count); inspect(x() . shared . count); 

Output is as desired:

 x() . shared . count is 1 x() . count is 1 x() . shared . count is 3 

The beauty of concatenation...