RE: [PHP] Object Oriented Programming question

From: tedd > At 10:26 AM -0500 1/19/10, Bob McConnell wrote: >> Some problems will fit into it, some don't. > > I teach OOP thinking at the local college and haven't run into a > problem that doesn't fit. For example, in my last class I had a woman > who wanted to pick out a blue dress for her upcoming wedding > anniversary. The class worked out the problem with a OOP solution. Hi Tedd, Here's one you can think about. I have a box, purchased off the shelf, with multiple serial ports and an Ethernet port. It contains a 68EN383 CPU with expandable flash and RAM. The firmware includes a simple driver application to create extended serial ports for MS-Windows, but allows it to be replaced with a custom application. The included SDK consists of the gcc cross-compiler and libraries with a Xinu kernel and default drivers for a variety of standard protocols. I need to build a communications node replacing the default drivers with custom handlers for a variety of devices. It must connect to a server which will send it configuration messages telling it what hardware and protocols will be connected to each port. The Xinu package includes Posix threads. In the past 23 years I have solved this problem six times with five different pieces of hardware. But I still don't see how to apply OOP to it. > ---- > >> Some people can look at problems and see objects and some can't. > > That's for certain -- but in time just about everyone can understand > the basic concepts of OOP. Understanding basic concepts and understanding how to map them on to real problems are two entirely different skill sets. I understand the concepts, they just don't make any sense to me. All of the definitions are backwards from the way I learned to evaluate problems. I feel like a carpenter trying to figure out how to use a plumber's toolbox. There are some things in there I think I recognize, but most of it is entirely foreign to me. Cheers, Bob McConnell