Object-oriented programming: Difference between revisions

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* Procedures – also known as functions, methods, routines, or [[subroutine]]s – take input, generate output, and work with data. Modern languages include [[structured programming]] constructs like [[Loop (computing)|loops]] and [[Conditional (computer programming)|conditionals]].

Support for [[modular programming]] lets programmers organize related procedures into files and modules. This makes programs easier to manage. Each modulesmodule has its own [[namespace]], so items in one module will not conflict with items in another.

Object-oriented programming (OOP) was created to make code easier to [[code reuse|reuse]] and [[software maintenance|maintain]].<ref name="realisticcodereuse">{{Cite web| first = Scott| last= Ambler| title = A Realistic Look at Object-Oriented Reuse| date=1 January 1998| access-date=4 July 2010| publisher = drdobbs.com| url=http://www.drdobbs.com/184415594}}</ref> However, it was not designed to clearly show the flow of a program's instructions—that was left to the compiler. As computers began using more parallel processing and multiple [[thread (computer science)|threads]], it became more important to understand and control how instructions flow. This is difficult to do with OOP.<ref name="flaws">{{Cite web| first = Asaf| last= Shelly |title = Flaws of Object Oriented Modeling| date=22 August 2008|access-date=4 July 2010| publisher = Intel Software Network| url=http://software.intel.com/en-us/blogs/2008/08/22/flaws-of-object-oriented-modeling/}}</ref><ref name="multithreadingisaverb">{{Cite web| first = Justin| last = James| title = Multithreading is a verb not a noun| date = 1 October 2007| access-date = 4 July 2010| publisher = techrepublic.com| url = http://blogs.techrepublic.com.com/programming-and-development/?p=518| archive-url = https://web.archive.org/web/20071010105117/http://blogs.techrepublic.com.com/programming-and-development/?p=518| archive-date = 10 October 2007| url-status = dead| df = dmy-all}}</ref><ref name="multicore">{{Cite web| first = Asaf| last= Shelly| title = HOW TO: Multicore Programming (Multiprocessing) Visual C++ Class Design Guidelines, Member Functions| date=22 August 2008| access-date=4 July 2010| publisher = support.microsoft.com| url=http://support.microsoft.com/?scid=kb%3Ben-us%3B558117}}</ref><ref>{{cite web|url=http://existentialtype.wordpress.com/2011/04/17/some-advice-on-teaching-fp/|title=Some thoughts on teaching FP|author=Robert Harper |publisher=Existential Type Blog|access-date=5 December 2011|date=17 April 2011|author-link=Robert Harper (computer scientist)}}</ref>