simply — OOP — simply Let's talk about concepts .

Thomas Bahn [email_address] +49/4307/900-401 assono GmbH http://www.assono.de http://www.assono.de/blog

You can use a pocket watch.

The manufacturer must know how to build the clock.

A concept called information hiding . Reduce complexity by hiding details beneath the surface.

This is the power of OOP .

Everything is an object . Everything consists of objects.

There are many objects. Concurrently . Objects interact .

OOP maps real world objects to software objects.

A concept called encapsulation . Object = state + behavior + identity

„Think of an object as a fancy variable; it stores data, but you can „make requests“ to that object, asking it to do operations on itself.“ Bruce Eckel, Thinking in Java

Models of an office chair

A concept called abstraction . Reduce complexity by ignoring unnecessary details.

This is the power of OOP .

A concept called class .

Divide and conquer : Software design class for class

This is the power of OOP .

A concept called inheritance .

This is the power of OOP .

A concept called polymorphism .

Change behavior without changing code.

This is the power of OOP .

Everyone has his responsibilities . Every object, too.

A concept called delegation .

This is the power of OOP .

Construction and destruction of objects

Let's talk about principles . Keep it simple .

The public interface of a class is a contract .

Make the public interface as small as possible. You can always add later, but never remove , nor modify .

Remember: You can always change the private internals .

Reduce coupling between objects.

Test your classes separately first. A concept called Unit Testing .

Let's talk about OOP in LotusScript .

Demo of the Watch class.

Demo of the Email class.

The end Ask questions now — or later Blog: www.assono.de/blog Email: [email_address] Phone: +49/4307/900-401