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Topic: Callback (computer science)


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In the News (Thu 10 Dec 09)

  
  Dirk Riehle: Dissertation, Chapter 4: Framework Design
A callback role type is a free role type of a framework that has a non-empty set of operations.
Callback role types are important, because having to define operations has the most visible impact on the implementation of a framework's class model in a particular programming language.
Callback role types are the role modeling equivalent of callback interfaces as defined in the previous subsection on traditional coupling mechanisms.
www.riehle.org /computer-science/research/dissertation/chapter-4.html   (7942 words)

  
 Callback (computer science) - Wikipedia, the free encyclopedia
A callback can be used as a simpler alternative to polymorphism and generic programming, in that the exact behavior of a function can be dynamically determined by passing different (yet compatible) function pointers or handles to the lower-level function.
A callback may also be regarded as a form of runtime binding, as discussed in the influential Design Patterns book (see the Chapter 1 summary).
Callback functions are also frequently used as a means to handle exceptions arising within the low level function, as a way to enable side-effects in response to some condition, or as a way to gather operational statistics in the course of a larger computation.
en.wikipedia.org /wiki/Callback_(computer_science)   (1075 words)

  
 Callback Modem - Search Results - MSN Encarta
Callback Modem, in computer science, a type of modem that, instead of answering an incoming call, requires the caller to enter a touch-tone code...
Modem, device that enables computers, facsimile machines, and other equipment to communicate with each other across telephone lines or over cable...
XModem, in computer science, a file-transfer protocol used in asynchronous communications.
encarta.msn.com /Callback_Modem.html   (97 words)

  
 The Callback Interface
If a callback is registered with an event, the callback is called when the event occurs.
Callbacks can be filtered, so that they are only called in specific situations.
The callback is delivered before it is actually deleted in order to enable processing of the entity.
www.sics.se /dive/manual/callbacks.html   (2393 words)

  
 Callback :: Services : Gourt
Callback (computer science), executable code that is passed as a parameter to other code
Callback (telecommunications), the telecommunications event that occurs when the originator of a call is immediately called back in a second call as a response
Callback (comedy), a joke which refers to one previously told in a set of jokes including both
business.gourt.com /Telecommunications/Services/Callback.html   (557 words)

  
 Enrollment for Computer Science Majors Declines
A new report has found that 10 percent fewer students enrolled in computer science and engineering programs in the 2003-2004 academic year compared with the previous school year, USA Today reports.
The Computing Research Association, a group for professors of computer science, computer engineering, and related fields, conducted the study.
While the job market for computer majors remains tight, some companies are concerned that if enrollment continues to fall, they will be unable to find qualified workers in the future.
hr.blr.com /display.cfm/id/15233   (231 words)

  
 1.  TAU Trace Format Reader Library
The trace data relevant to a callback function's associated TAU event type are delivered to the function via its arguments.
The callback table should be initialized by associating each of its elements with a complementary callback function.
Each element of the callback table must be initialized to a viable function or 0.
www.cs.uoregon.edu /research/tau/docs/TraceFileReaderHelp   (1417 words)

  
 Setting Up a Linux-based PPP Callback server LG #77
A modem attached to ttyS0 serves as the dial in and callback modem.
The modem on my client machine is kept ready to accept the callback connection, and once the connection is established I am again prompted with a login prompt.
I have a Masters in Computer Science from Cochin University.
linuxgazette.net /issue77/sunil.html   (905 words)

  
 Callback (computer science)   (Site not responding. Last check: 2007-10-21)
In computer science, a callback is a concept, which allows a low level layer to call a function from a higher level layer, when usually, the higher level calls the low level layer.
It is used in Windows to set an exception handler.
Here is an example in the C programming language
publicliterature.org /en/wikipedia/c/ca/callback__computer_science_.html   (146 words)

  
 Dr. Dobb's | Event-Driven Database Programming in C++ | July 22, 2001   (Site not responding. Last check: 2007-10-21)
POET's event-handling mechanism is based on callbacks that occur when a client method is called after the POET system encounters a specific insert, lock, or update event.
When working with callbacks, keep in mind that the class that contains the callback method must be derived from the base class PtCallback, and that the callback method must bind to the event.
The mechanism to define this callback is identical to that of the insert event.
www.ddj.com /184409145?pgno=11   (3860 words)

  
 Math and Computer Science Courses
An introduction to a modern computer language and to modern techniques of computer programming such as structured and object-oriented design.
Deeper understanding of computers will be taught through general concepts augmented by the study of at least one computer architecture in the 32-bit class.
A study of errors arising in computation: roundoff errors, truncation errors, propagation of errors.
academics.adelphi.edu /artsci/math/advising/courses.shtml   (2490 words)

  
 Dr. Dobb's | IOStreams Storage | December 9, 2005
Maciej Sobczak is a Ph.D. student at the Institute of Computer Science, Warsaw University of Technology.
The idea behind callback functions is that you can ask the stream object to call the specified function (usually, your function) when something important happens.
After writing a couple of your own classes that use the additional storage in stream objects, you quickly discover that the way you use this functionality is repeatable to the extent that a special, reusable wrapper would be quite desirable.
www.ddj.com /184402062?pgno=1   (2326 words)

  
 Glossary: glossaries | mywelt.net   (Site not responding. Last check: 2007-10-21)
In computing, Cascading Style Sheets (CSS) is a stylesheet language used to describe the presentation of a document written in a markup language.
In computer science, generics is a technique that allows one value to take different datatypes (so-called polymorphism) as long as certain contracts such as subtypes and signature are kept.
A thread in computer science is short for a thread of execution or a sequence of instructions.
www.mywelt.net /?q=glossary   (7177 words)

  
 Chemistry - Category:Computer science   (Site not responding. Last check: 2007-10-21)
In its most general sense, computer science (CS or compsci) is the study of computation and information processing, both in hardware and in software.
In practice, computer science includes a variety of topics relating to computers, which range from the abstract analysis of algorithms, formal grammars, etc. to more concrete subjects like programming languages, software, and computer hardware.
As a scientific discipline, it is distinct from mathematics, programming, software engineering, informatics, and computer engineering, although there are significant overlaps and no clear demarcation.
www.chemistrydaily.com /chemistry/Category:Computer_science   (98 words)

  
 Hello World - UC Berkeley Computer Science Commencement Convocation Graduation Speech
There are two things I want you as a graduating computer scientist of this university to remember: First, you should be out there for the people who really need you the most, and that is the community around you.
We are still the experts whose knowledge defines how fast computing technology advances, the creators of the tools that biologists use to find cures, what pilots use to navigate or your mom uses to send email.
Remember that we are graduating from the premier university whose computer science department is world-famous.
www.enderminh.com /minh/helloworld.aspx   (472 words)

  
 Callback in 5 secs - Dev Shed
Discuss Callback in 5 secs in the PHP Development forum on Dev Shed.
Callback in 5 secs PHP Development forum discussing coding practices, tips on PHP, and other PHP-related topics.
PHP is an open source scripting language that has taken the web development industry by storm.
forums.devshed.com /php-development-5/callback-in-5-secs-291190.html   (609 words)

  
 What is virtual? - A Word Definition From the Webopedia Computer Dictionary
The term virtual is popular among computer scientists and is used in a wide variety of situations.
The difference is a bit like the difference between an architect's plans for a house and the actual house.
InfoSpace is a model that combines a three-dimensional visual interface with a three-dimensional virtual environment to create a new mode of data organization and human/information interaction.
www.webopedia.com /TERM/v/virtual.html   (368 words)

  
 callback - OneLook Dictionary Search
Tip: Click on the first link on a line below to go directly to a page where "callback" is defined.
callback : Encarta® World English Dictionary, North American Edition [home, info]
callback : The American Heritage® Dictionary of the English Language [home, info]
www.onelook.com /?w=callback   (155 words)

  
 ViaPoint Software
After Metaphor he worked briefly for Oracle Corporation and founded CallBack Software in 1985 to become one of the earliest entrants in the CRM segment.
Aaron’s vision for CRM led CallBack to pioneer many key elements of CRM: remote synchronization (introduced in 1987), opportunity management (introduced in 1989), and telemarketing management (introduced in 1991).
She has also been highly effective at turning sales into long term revenue producers, and has been able to effectively leverage her contacts as they have moved to become new customers at new companies.
www.viapoint.com /about/team.html   (370 words)

  
 Callbacks
In computer science lingo, the function passed as an argument is called a callback, since it is "called back" by the other function.
He does some low-level bit-twiddling that is perfectly legal and portable, but the optimizer on the Kuck and Associates compiler causes wrong answers to be generated at run-time.
So I wrote my own callback library that has mostly the same functionality and uses his ideas, but implements things a bit differently.
mccammon.ucsd.edu /~oompaa/Oompaa/oompaa/global/doc/callback.html   (629 words)

  
 FSMGenerator - Finite State Machine generating software.
The callback name must refer some sort of “plugs” within the user’s software, which provide the interface between the created FSM and the user’s software.
As it can be seen, the identification of the states, events, transitions, callbacks and hooks is name-based.
Moreover, the purpose of Generator module is not only to provide FSM generators for required destination programming languages (C, CPP and Java), but also provide a framework for tool extension by adding generators for additional programming languages.
fsmgenerator.sourceforge.net   (2731 words)

  
 Jubii Søg - callback
Callback ist, salopp formuliert, der Versuch, über einen Umweg günstiger zu telefonieren als...
Mit Callthrough (Durchwahl) und Callback (Rückruf) kann jeder billig mobil telefonieren...
Callback World - callback service for country to country calling.
search.jubii.dk /cgi-bin/pursuit?cat=loc&query=callback   (249 words)

  
 Software design
Computer Science 152 or 153 is the normal prerequisite.
Fuzz revisited: a re-examination of the reliability of Unix utilities and services,'' University of Wisconsin Madison Computer Sciences Technical Report CS-TR-95-1268, April, 1995.
Java tip 68: Learn how to implement the Command pattern in Java: Add flexibility and extensibility to your programs with this object-oriented equivalent of the callback,'' Java world, July 30, 1999.
www.math.grin.edu /~stone/courses/software-design   (334 words)

  
 Courses Related to Human-Computer Interaction at Drexel University   (Site not responding. Last check: 2007-10-21)
Studies moral problems pertaining to the production of computer technologies, and provides ethical analyses of current laws and pending legislation aimed at regulating computer use.
This course explores the principles of cognition and intelligence in humans and machines, focusing on how to build computational models that, in essence, think and act like people.
Explores the psychological aspects of human interaction with computing technology, focusing on the design, evaluation, and redesign of usable and useful human- computer interactions.
www.cis.drexel.edu /hci/courses.htm   (1201 words)

  
 FAQ - TSpaces - Computer Science Research at Almaden
So a callback because of an event registration will share a socket that was already established instead of creating a new socket.
You should be able to use the event callback with the specific template that you are interested in - this way, all clients will be able to see the new tuples.
So, in short, I think the event callback is the best way to go when several clients may need the same tuple.
www.almaden.ibm.com /cs/TSpaces/faq.html#general   (10319 words)

  
 Viapoint Corporation
He became lead developer of the CallBack product in 1999, and led a team of 3 developers in the architecture and development of CallBack's Palm Pilot products.
Chris earned a BA in Computer Science at Vassar College.
She took over as CEO of CallBack Software in 1999, growing sales revenues by 50% and leading it to 3 of its most profitable years.
www.viapoint.com /presskit.html   (1045 words)

  
 Object-Oriented Framework Development
In callback, the service user code declares that it wants to be called on the occurrence of a determined event.
Then, the service provider code performs callback on the service user code when the event occurs.
University of Waterloo, Canada, in 1969, and the Ph.D. degree in computer science from the
www.acm.org /crossroads/xrds7-4/frameworks.html   (3864 words)

  
 Squeak and Croquet
The goal of Squeak is to create a true personal computing environment, for users of all ages, from kids in school, to students or researchers at universities, to normal „down to earth“ developers.
Great time for being a computer science researcher, as the US military just pumped huge amounts of cash into basic computer research with the ARPA program.
But the technical aspect is not the only interesting one: The idea was to build a computer for kids in the way that it would be a new kind of medium.
www.iam.unibe.ch /~denker/talks/LinuxTag05/paper-11163/paper-11163.html   (2001 words)

  
 Gnu Makefiles for Petzold Programs
If you want to experiment with UNICODE and create executables that can only be run under Windows NT/2000/XP then you are free to do so by either defining the UNICODE macro in Petzold's source files or in my.MAK files.
Here is the procedure to get your computer set up to compile the Petzold programs with the Gnu tools.
Finally, you need revision 1.3 of my Computer Science Lab CD-ROM in order to have a new enough version of CPPIDE for it to work seamlessly with the Petzold programs.
www.computersciencelab.com /Petzold.htm   (2538 words)

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