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Topic: Abstract data type


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  Abstract data type - Wikipedia, the free encyclopedia   (Site not responding. Last check: 2007-10-05)
Such a data type is abstract in the sense that the focus is on the definitions of the constructor that returns an abstract handle that represents the data, and the various operations with their arguments.
There is a distinction, although sometimes subtle, between the abstract data type and the data structure used in its implementation.
In object-oriented languages such as C++ and Java, ADTs are typically represented using the class construct where the data is represented by data members (attributes) and the operations are represented by member functions (methods).
en.wikipedia.org /wiki/Abstract_data_type   (878 words)

  
 Algebraic data type - Wikipedia, the free encyclopedia
An algebraic data type is a datatype whose each value is data from other datatypes wrapped in one of the constructors of the datatype.
An algebraic data type may also be an abstract data type (ADT) if it is exported from a module without its constructors.
In set theory the equivalent of an algebraic data type is a discriminated union - a set whose elements consist of a tag (equivalent to a constructor) and an object of a type corresponding to the tag (equivalent to the constructor arguments).
en.wikipedia.org /wiki/Algebraic_data_type   (555 words)

  
 Abstract Data Type Systems   (Site not responding. Last check: 2007-10-05)
ADTS generalize inductive types as they are defined in the calculus of constructions, by providing definitions of functions by pattern matching on one hand, and relations among constructors of the inductive type on the other hand.
The first half of the paper describes the framework of ADTS, while the second half investigates cases where ADTS are strongly normalizing.
This is shown to be the case for the polymorphic lambda calculus (with possibly subtypes) enriched by higher-order algebraic rules obeying a strong generalization of primitive recursion of higher type that we call the {\em general schema}.
www.lix.polytechnique.fr /~jouannaud/abstracts/adts.html   (192 words)

  
 Topic #1: The Abstract Data Type
The concept of abstract data types as way to classify objects not just by their representation structure but by their expected behavior.
Data structures as a separation of a conceptual definition of a data structure and its implementation.
ADTs as a mechanism to limit the interaction between algorithms and associated data structures.
www.cs.mcgill.ca /~cs251/OldCourses/1997/topic1   (1420 words)

  
 CSCI 2170 Lab 11 - Introduction to Abstract Data Types & Stacks
A description of the elements that make up the data type and a description of the relationships between individual elements in the data type.
Therefore, a stack is the logical data structure to use for storing return addresses and local variables during subprogram invocations.
The data in a stack could be implemented using a data member which is an array called elements[0..n-1].
www.mtsu.edu /~csci217/manual/lab11/lab11.html   (1867 words)

  
 Polymorphic Type Inference and Abstract Data Types - Lufer, Odersky (ResearchIndex)   (Site not responding. Last check: 2007-10-05)
Polymorphic Type Inference and Abstract Data Types - Lufer, Odersky (ResearchIndex)
Polymorphic Type Inference and Abstract Data Types (1994)
Abstract: Data Types Konstantin Läufer Martin Odersky Loyola University of Chicago Universität Karlsruhe laufer@math.luc.edu odersky@ira.uka.de June 5, 1994 Technical Report LUC-001 Abridged version appeared in Transactions of Programming Languages and Systems Abstract Many statically-typed programming languages provide an abstract data type construct, such as the module in Modula-2.
citeseer.ist.psu.edu /112329.html   (428 words)

  
 Tries as an Abstract Data Type
Depending on the application of the ADT, FIND may either simply indicate whether or not k is present, or it may return a value v associated with the key k.
The domain of k (that is, the set of types that satisfy the constraints on k) is the set of finite strings from a specific alphabet.
Note that the keys must be unique; while it is relatively easy to adapt most of the data structures that we have seen so far to work with multiple elements that have the same key, the same is not true for tries.
www.eecs.harvard.edu /~ellard/Q-97/HTML/root/node23.html   (396 words)

  
 abstract data type from FOLDOC   (Site not responding. Last check: 2007-10-05)
Objects of the type are created and inspected only by calls to the access functions.
This allows the implementation of the type to be changed without requiring any changes outside the module in which it is defined.
A classic example of an ADT is a stack data type for which functions might be provided to create an empty stack, to push values onto a stack and to pop values from a stack.
lgxserver.uniba.it /lei/foldop/foldoc.cgi?abstract+data+type   (120 words)

  
 Abstract Data Type
Abstract data types, include files, non-inline member functions, assertions.
The former does not: It only specifies the types of parameters and the type of the return value.
Typing a few additional lines of code here and there, without even having to think much about it, is a price every experienced programmer is happy to pay for the convenience and power of data hiding.
www.relisoft.com /book/lang/scopes/11abstr.html   (966 words)

  
 Glossary
Some data types don't have well-defined interfaces, but are useful for implementing abstract data types.
A technique that consists of using a more powerful abstract data type to implement a less powerful one, by using a subset of the operations on the more powerful data structure.
Implementation types are types that are not well-defined enough that they can be considered abstract data types.
dept-info.labri.u-bordeaux.fr /~strandh/Teaching/MTP/Common/Strandh-Tutorial/glossary.html   (725 words)

  
 What is an "Abstract Data Type"?
The most common ADT would be a stack, heap or queue, which can be implemented in an OOP manner or a procedural manner in just about (if not all) languages.
The data type is a stack, but it isn't a primitave data type.
Now, can they be implemented as an abstract class, with the pop and push defined but not implemented therefore making it an abstract class, but I think the two definitions are different with the common word "abstract" in them.
www.codecomments.com /message369948.html   (1319 words)

  
 An abstract data type requirement   (Site not responding. Last check: 2007-10-05)
The requirement can thus be loosely stated as a need to provide a data type called JulianDate which will store, represent and manipulate calendar dates in Julian dates format.
For any abstract data type, one way to assist the precise definition of operations for the type is to consider possible operations from the following categories:
Operations for the input and output of values of the type.
www.scism.sbu.ac.uk /law/Section2/chap4/s2c4p1.html   (363 words)

  
 Lecture 1 - Abstract Data Type
We define the data type - its values and operations - without referring to how it will be implemented.
Applications that use the data type are oblivious to the implementation: they only make use of the operations defined abstractly.
In this way the application, which might be millions of lines of code, is completely isolated from the implementation of the data type.
www.csi.uottawa.ca /~holte/T26/abstract-data-type.html   (669 words)

  
 Abstract Data Type   (Site not responding. Last check: 2007-10-05)
to Abstract Data Types Using Ada by Bruce Hillam
An abstract data type (ADT) is a data type defined only in terms of the operations that may be performed on objects of the type.
Users (programmers) are allowed to examine and manipulate objects using only these operations and they are unaware of how the objects are implemented in the programming language.
www.rwc.uc.edu /COOK/ADT/ADT.HTM   (147 words)

  
 abstract data type   (Site not responding. Last check: 2007-10-05)
Note: Since the data values and operations are defined with mathematical precision, rather than as an implementation in a computer language, we may reason about effects of the operations, relations to other abstract data types, whether a program implements the data type, etc.
One of the simplest abstract data types is the stack.
Paul E. Black, "abstract data type", from Dictionary of Algorithms and Data Structures, Paul E. Black, ed., NIST.
www.nist.gov /dads/HTML/abstractDataType.html   (223 words)

  
 The Sequence Abstract Data Type
A text editor maintains a sequence of characters, by implementing some variant of the abstract date type Sequence.
One definition of the Sequence abstract data type is:
-- the data type that this is a sequence of (in most cases it will be an ASCII character).
www.cs.unm.edu /~crowley/papers/sds/node3.html   (136 words)

  
 Abstract data type at opensource encyclopedia   (Site not responding. Last check: 2007-10-05)
Abstract data types or ADTs are data types described in terms of the operations they support—their interface—rather than how they are implemented.
Arrays, linked lists, and binary trees—among other data structures—can all support these operations, with different performance tradeoffs.
Some programming languages, such as Ada and Modula-2, have explicit support for abstract data types.
www.wiki.tatet.com /Abstract_data_type.html   (296 words)

  
 Comparison of Abstract Data Type and. . . (ResearchIndex)   (Site not responding. Last check: 2007-10-05)
25 Recovering abstract data types and object instances from a c..
14 Extracting abstract data type from c programs: A case study (context) - Canfora, Cimitile et al.
5 A metric-based approach to detect abstract data types and ab..
citeseer.ist.psu.edu /162229.html   (310 words)

  
 Abstract Data Type   (Site not responding. Last check: 2007-10-05)
This program provides an example of separate compilation in that the abstract data type implementation is defined separately from the main program.
You do not need to add the header file "student.h" to the project as it will be included by the others.
STUDENT.H - header file describing types and interface to operations for those types.
www.shsu.edu /~csc_kth/common/165/absdt.html   (76 words)

  
 abstract data type Definition. Define abstract data type. What is abstract data type?
(ADT) A kind of {data abstraction} where a type's internal form is hidden behind a set of {access functions}.
Values of the type are created and inspected only by calls to the access functions.
{Objects} and ADTs are both forms of data abstraction, but objects are not ADTs.
www.learnthat.com /define/view.asp?id=3524   (182 words)

  
 [No title]
Abstract Data Type: A Definition Of A Data Type Which Defines The Behavior Of The Data Type And Its Associated Operations
Data Type Implementation: A Way To Implement The Operations Of A Data Type Which Is Consistent With Its Abstract Definition
TYPE identifier IS Predefined Operations For Private Types:
www.seas.gwu.edu /~csci131/spring97/lect2.html   (678 words)

  
 Prospective study of cigarette smoking, alcohol use, and the risk of diabetes in men -- Rimm et al. 310 (6979): 555 -- ...
Type of Alcohol Consumed and Mortality from All Causes, Coronary Heart Disease, and Cancer
Association of Type and Duration of Diabetes With Erectile Dysfunction in a Large Cohort of Men
Alcohol consumption and the incidence of type II diabetes
bmj.bmjjournals.com /cgi/content/abstract/310/6979/555   (2419 words)

  
 Abstract Data Type (ADT)   (Site not responding. Last check: 2007-10-05)
This section presents Abstract Data Type (ADT) view and some ways to support this view in compiler generated code.
You should understand some the effect of OOP structure on the internal code and limitation of not providing real support for OOP.
How do Modula2 and Ada support separate compilation?
www.ndsu.nodak.edu /instruct/juell/cs372s02/foils/adt-lo.html   (72 words)

  
 SS > factoids
abstractabstract data type • Ackermann's function • Ada • adjective order • affordance • algebra • Algol • and • P.
data abstraction • Richard Dawkins • delegation • denotational semantics • Antoine de Saint-Exupery • René Descartes • Paul A. Dirac • divisibility tests • Dynamo
tactics • Tcl •TeX • Dylan Thomas • transitive relation • Turing • Mark Twain • Tycho Brahe • type • Lao Tzu
www-users.cs.york.ac.uk /~susan/cyc/index.htm   (589 words)

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