Advanced Object Oriented Programming with Visual FoxPro 6.0 by Markus Egger, Mac Rubel

By Markus Egger, Mac Rubel

This ebook combines OOP idea and real-world useful knowledge, all from the visible FoxPro perspective. lined are multi-tiered structure; OO layout styles; item metrics; and OO standards, modeling, and layout, together with the UML.

Show description

Read Online or Download Advanced Object Oriented Programming with Visual FoxPro 6.0 PDF

Similar object-oriented design books

JUnit in Action, Second Edition

While JUnit used to be first brought a decade in the past by means of Kent Beck and Erich Gamma, the Agile circulate was once in its infancy, "Test pushed improvement" was once unknown, and unit checking out was once simply beginning to stream into the common developer's vocabulary. this present day, so much builders recognize the advantages of unit trying out and depend upon the more and more refined instruments now to be had.

Construction Supply Chain Economics (Spon Research)

This can be the 1st entire research of the economic sourcing and procurement practices all through sixty-eight development offer channels throughout seven significant commodity sectors in any respect degrees. London provides real-world case reports to combine idea and perform to explain the commercial structural and behavioural features of sectors crucial to the development functionality.

Programming for the Newton®: Software Development with Newtonscript™

Programming for the Newton: software program improvement with NewtonScript makes a speciality of the techniques, methods, operations, and ideas curious about software program improvement with NewtonScript. The book first elaborates on Newton program layout, perspectives at the Newton, and protos. Discussions specialise in procedure protos, developing and utilizing person protos, linking and naming templates, developing the perspectives of WaiterHelper, Newton software designs, and lifestyles cycle of an program.

Decline and Fall of the American Programmer

Ed Yourdan demonstrates how U. S. software program companies can turn into world-class outlets in the event that they make the most the foremost software program applied sciences of the Nineteen Nineties. "View this publication as a Tom Peters-style look for excellence within the software program global. Be ready to be angered. Be ready to be faced. Be ready to alter.

Extra info for Advanced Object Oriented Programming with Visual FoxPro 6.0

Sample text

For the scope issue, the same rules apply as for finding function definitions. 0 introduces a new function to instantiate objects called NewObject(). It basically does the same job as CreateObject(), but it allows you to specify the class library as well. vcx") Using NewObject(), Visual FoxPro makes sure the class definition is in scope. You can specify visual class libraries (VCX) as well as PRG files. Also, NewObject() allows you to specify a compiled application that hosts the class definition.

You could specify how objects are added or subtracted from each other. This would be a truly great feature to have, but again, it's not object-oriented and there must be better ways to accomplish the same goal in truly object-oriented ways. You could provide methods that do just the same as the operators would. In addition, I don't see a way to implement something like that in Visual FoxPro because C++ compiles its programs in a very different manner from Visual FoxPro. Copying objects In Visual FoxPro, there is no way to create an exact copy or clone of an object at runtime.

The next program line checks if the object creation was successful. If not, I have to remove the item from the array. Of course, I can only remove an item if the length of the array is at least two items. Otherwise, I'd end up with a length of 0, which wouldn't be valid in FoxPro. However, this code doesn't deal with all possible scenarios. What if the user closes a form using the window's Close box? NULL. value in one item of the collection. In order to handle this scenario perfectly, I'd need to change the form classes so they tell the manager object that they are about to die.

Download PDF sample

Rated 4.39 of 5 – based on 23 votes