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Topic: Class hierarchy


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In the News (Thu 16 Feb 12)

  
  Class Hierarchy Design
The Number class is defined by a one-dimensional scale (such as for integers or floating-point numbers) where distance is an integral part of the nature of the values of this class.
A class hierarchy embodies a way of thinking about the concepts in the application domain; members of the development team can use it as a device to test whether their conceptualizations of the application domain entities are similar.
Revise the fourth-iteration class hierarchy developed for the Flight Control Panel assuming that a new instrument is added to indicate the position of the landing gear by displaying one of three text strings: "retracted," "extended," or "locked".
ei.cs.vt.edu /~kafura/java/Chapter6/hierarchy_design.html   (2720 words)

  
 Class Hierarchy Viewer
The class hierarchy is drawn as a tree-structured graph in which each frame is a node in the graph, and directed edges are drawn from classes to subclasses and instances.
The types of statistics that are generated include number of classes and instances, depth of the class hierarchy, percentage of primitive classes, average number of slots per frame, average number of values per slot, etc.
For situations in which you are displaying classes only, or don't wish to expand a class node, this command presents a menu of instances of the currently selected class frame.
www.ai.sri.com /~gkb/hierarchy.html   (4080 words)

  
 Kenton Lee: OSF/Motif Widget Class Hierarchy
The classes are grouped by type (intrinsic, shell, primitive, gadget, manager).
These widget classes are provided by the X Toolkit intrinsics, not Motif.
Note that the XmClipWindow widget class is used only by internally by the XmContainer and XmScrolledWindow widgets; there is no public API to XmClipWindow.
www.rahul.net /kenton/MotifWidgets.html   (267 words)

  
 LTI-Lib: Conceptual Class Hierarchy in the LTI-Lib
Is also a template class, where the given type is the type for the lti::tpoints used for the upper-left and bottom-right corners of the rectangle.
lti::channel8 is a class that inherits from lti::matrix and implements gray-valued images with elements ranging between 0 and 255.
lti::channel is a class that inherits from lti::matrix and implements gray-valued image with elements usually ranging between 0.0f and 1.0f.
ltilib.sourceforge.net /doc/html/classHierarchy.html   (5491 words)

  
 Cecil/Vortex Project Paper: "Class Hierarchy Analysis"   (Site not responding. Last check: 2007-10-16)
Optimizing compilers for object-oriented languages apply static class analysis and other techniques to try to deduce precise information about the possible classes of the receivers of messages; if successful, dynamically-dispatched messages can be replaced with direct procedure calls and potentially further optimized through inline-expansion.
In this paper we present class hierarchy analysis and describe techniques for implementing this analysis effectively in both statically- and dynamically-typed languages and also in the presence of multi-methods.
We also discuss how class hierarchy analysis can be supported in an interactive programming environment and, to some extent, in the presence of separate compilation.
www.cs.washington.edu /research/projects/cecil/www/Papers/hierarchy.html   (165 words)

  
 Log4j Version 1.2.12: Class Hierarchy
This class is specialized in retrieving loggers by name and also maintaining the logger hierarchy.
The structure of the logger hierarchy is maintained by the
The hierarchy is such that children link to their parent but parents do not have any pointers to their children.
logging.apache.org /log4j/docs/api/org/apache/log4j/Hierarchy.html   (566 words)

  
 AllRefer.com - Peru - Culture, Class, And Hierarchy In Society | Peruvian Information Resource
In the middle range of Peruvian class structure, the Chinese and especially the Japanese have achieved status and mobility in ways the native peoples have not.
The key to understanding Peruvian society is to view aspects of its dynamic ethnoracial character as a set of variables that constantly interplays with socioeconomic factors associated with social class configurations.
Yet, there is opportunity for socioeconomic mobility that permits ambitious individuals and families to ascend the hierarchy ranks in limited ways and via certain pathways.
reference.allrefer.com /country-guide-study/peru/peru54.html   (1373 words)

  
 UnrealWiki: Actor Class Hierarchy
This is the class tree extending from Actor in UT2003.
Now that I think about it, there won't be any classes that are ut2003 only, but a few classes (such as weapon fires, which now subclass object) moved around.
Wormbo: Actually, it was the Pickup class itself that was incorrectly listed as a subclass of Pawn, the Pickup subclasses already had the correct position compared to Pickup's real position in the class tree.
wiki.beyondunreal.com /wiki/Actor_Class_Hierarchy   (1014 words)

  
 Making topic maps more colourful
Furthermore association taxonomies, class hierarchies, and consistency constraints of topic maps are presented and discussed.
As already stated above, both class hierarchies and association type properties are the basis for compact topic maps, minimized creation and maintenance efforts, and a reduction of coding errors.
This supports our contention that the concept of class hierarchies should be a predefined association type of topic map template ensuring the correct built-in interpretation by the topic map software.
www.gca.org /papers/xmleurope2000/papers/s29-01.html   (5405 words)

  
 JOT: Journal of Object Technology - The Theory of Classification, Building the Class Hierarchy, Anthony J.H. Simons
Regarding class hierarchy development, we gave examples of recognisable classes, with mixtures of default, abstract and concrete methods.
A class may introduce a new method, may declare an abstract method, or may re-implement an existing method, replacing it with a more appropriate version.
Furthermore, we have shown that classes derived by inheritance (using generators) give rise to object constructors, which create objects of exact types (after fixpoints are taken).
www.jot.fm /issues/issue_2004_05/column2   (2990 words)

  
 Chapter 3 The start of the Counters class hierarchy   (Site not responding. Last check: 2007-10-16)
This collection of classes will subsequently be built upon in the following two chapters to illustrate the development of a class's functionality by extension.
Each chapter is divided into sections which present one step in the production of the hierarchy, and each section should be well understood before proceeding to the next.
Having absorbed the contents of the sections and of each chapter the only way of ensuring that they are fully understood is to complete the exercises presented at the end of the chapters.
www.scism.sbu.ac.uk /jfl/Chapter3/chap3.html   (175 words)

  
 The Scala Programming Language: Unified Types
Since Scala is class-based, all values are instances of a class.
All value classes are predefined; they correspond to the primitive types of Java-like languages.
Classes from the infrastructure on which Scala is running (e.g.
scala.epfl.ch /intro/unifiedtypes.html   (222 words)

  
 A Reorganization Framework of the Object-Oriented Class Hierarchy   (Site not responding. Last check: 2007-10-16)
In recent years there has been renewal of interest in the reorganization and transformations of classes for object-oriented design and programming.
In this article, we are concerned with the inheritance and aggregation hierarchies, and define the Object Semi-Equivalence relation between the class hierarchies by extending the object-equivalence relation.
And also we present a minimal set of transformations which forms a foundation for reorganization between class hierarchies based on the object semi-equivalence.
csdl.computer.org /comp/proceedings/apsec/1995/7171/00/71710117abs.htm   (219 words)

  
 Ruby Class Hierarchy
This page offers a few charts describing various subtrees of Ruby class hierarchy.
The class hierarchy was created using Ruby reflection features.
There is also the all-in-one ZIP archive containing all charts with their source in the native Umlet format.
www.insula.cz /dali/material/rubycl   (144 words)

  
 W3C Semantic Web Activity
It also offers means to infer that items with various properties are members of a particular class and offers a well-defined model for property inheritance.
In this example the "subClassOf" property is used for defining the class hierarchy.
The "rdfs: subClassOf" relation defines the category hierarchy and the "rdfs:seeAlso" relation cites the related categories that are not directly part of this hierarchy.
www.w3.org /2001/12/semweb-fin/w3csw   (3386 words)

  
 IS 240 Exercise for Week 7
We need not get into those things for the assignment, but I do think it is useful to work through an example of (what the object-oriented framework calls) a class hierarchy.
Don't try to represent these class/subclass relationships in the entity-relationship model (it can be done, but you don't want to know how).
Just start from your entities, call them each a class, fill in the missing subclasses and superclasses to complete the class hierarchy, and draw a simple diagram in which the classes are arrayed in a hierarchical tree-structure, or an outline.
polaris.gseis.ucla.edu /pagre/240/week7.html   (2176 words)

  
 Change Impact Analysis for A Class Hierarchy   (Site not responding. Last check: 2007-10-16)
Change impact analysis is the activity which identifies the parts to be retested.Object-oriented paradigm is based on several concepts such as encapsulation, inheritance, polymorphism, and dynamic binding.
Although these features contribute to the reusability and extensibility of systems, they produce complex dependencies between classes and attributes, which make it difficult to identify the affected components by changes.We propose an approach for analyzing change impact in a class hierarchy.
Our approach is based on the class firewall method, but aims to reduce the retesting effort significantly by taking a member function as a test unit.
csdl.computer.org /comp/proceedings/apsec/1998/9183/00/91830304abs.htm   (310 words)

  
 Java Unleashed Second Edition
Michael is the author of Java Quick Reference and has taught Java overseas to both managers and programmers.
For the past three years, he has been a teaching assistant for the introductory computer science class for majors.
You are curious about Java classes and how they relate to all the object-oriented hype you've heard about Java.
www.webbasedprogramming.com /Java-Unleashed-Second-Edition   (5477 words)

  
 MySQL Reference Manual :: 17.2.1 The Geometry Class Hierarchy
It is not possible to create objects in non-instantiable classes.
All classes have properties, and instantiable classes may also have assertions (rules that define valid class instances).
All instantiable geometry classes are defined so that valid instances of a geometry class are topologically closed (that is, all defined geometries include their boundary).
www.mysql.com /doc/en/GIS_geometry_class_hierarchy.html   (197 words)

  
 ASPN : Python Cookbook : Getting a dictionary of all members of a class hierarchy   (Site not responding. Last check: 2007-10-16)
ASPN : Python Cookbook : Getting a dictionary of all members of a class hierarchy
The following function creates a map of all members of a class, navigating ALL of the base classes in the correct order.
This can be used for various purposes, like checking whether a certain method is defined anywhere in a class hierarchy.
aspn.activestate.com /ASPN/Cookbook/Python/Recipe/52288   (78 words)

  
 Edit Squeak class hierarchy   (Site not responding. Last check: 2007-10-16)
I feel it would be helpful to see a short form of all that is available in the environment and how it is organized." _ !Hierarchy in the System Browser
  • Open up a "System Browser",
  • select "Kernel-Objects",
  • select class Object,
  • pop up the menu and select "hierarchy".
This selects all the hierarchy text, which you can then copy-and-paste to your favorite text editor.
-- *Cullen J. O'Neill* _ !Generating HTML documentation from classes or class hierarchy
  • A part of Dandelion 0.5 *http://www.mars.dti.ne.jp/~umejava/smalltalk/stClasses/dandelion/index.html*
  • The HTML "Encyclodedia" goodie on NISHIHARA Satoshi's Squeak Goodies and Toys page *http://isweb42.infoseek.co.jp/computer/nishis/smalltalk/Squeak/goodies/index.html*
minnow.cc.gatech.edu /squeak/695.edit   (210 words)

  
 Edit How can I get a complete class-hierarchy list?   (Site not responding. Last check: 2007-10-16)
Last edited: 1:44 am on 9 March 2003 by gdslppp59.mpls.uswest.net
!Answer: - Open up a *Browser*, select 'Kernel-Objects' and select the class ProtoObject.
-- now push the hierarchy-button or select 'browse hierarchy' trough the context menu or...
minnow.cc.gatech.edu /squeak/761.edit   (77 words)

  
 java.awt Class Hierarchy (Java 2 Platform SE v1.4.2)
java.awt Class Hierarchy (Java 2 Platform SE v1.4.2)
For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation.
Copyright 2003 Sun Microsystems, Inc. All rights reserved.
java.sun.com /j2se/1.4.2/docs/api/java/awt/package-tree.html   (48 words)

  
 TCTS Lab : Seminars   (Site not responding. Last check: 2007-10-16)
This programming paradigm mimics the inclusion and abstraction properties of block-diagrams by allowing processes to be included into higher-level processes and by describing each process at three different levels of abstraction.
It is based on a stream-like class hierarchy to be used as IOs for the abovementioned processes.
Faculté Polytechnique de Mons (Salle de cours de Théorie des Circuits: 3 on the map)
www.tcts.fpms.ac.be /talks_main.html   (4902 words)

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