Reification (computer science. Many programming language designs encapsulate the details of memory allocation in the compiler and the run-time system. In the design of the C programming language, the memory address is reified and is available for direct manipulation by other language constructs. For example, the following code may be used when implementing a memory-mapped device driver. The buffer pointer is a proxy for the memory address 0xB800000. char* buffer = (char*) 0xB800000; buffer[0] = 10; Data reification (stepwise refinement) involves finding a more concrete representation of the abstract data types used in a formal specification.
Data reification is the terminology of the Vienna Development Method (VDM) that most other people would call data refinement. Example population of IsMemberOf relationship in tabular form. The same fact, however, could also be viewed as an entity. UML provides an association class construct for defining reified relationship types. Person:p1 committee:isMemberOf committee:c1 . Continuation. The "current continuation" or "continuation of the computation step" is the continuation that, from the perspective of running code, would be derived from the current point in a program's execution. The term continuations can also be used to refer to first-class continuations, which are constructs that give a programming language the ability to save the execution state at any point and return to that point at a later point in the program, possibly multiple times. History[edit] The earliest description of continuations was made by Adriaan van Wijngaarden in September 1964.
Wijngaarden spoke at the IFIP Working Conference on Formal Language Description Languages held in Baden bei Wien, Austria. As part of a formulation for an Algol 60 preprocessor, he called for a transformation of proper procedures into continuation-passing style.[1] Christopher Strachey, Christopher P. A complete history of the discovery of continuations is given by (Reynolds 1993).
First-class continuations[edit] and ). Cl-cont - A Common Lisp Delimited Continuations Library. This page is anonymous. Vannevar Bush Symposium - Brown Computer Graphics Group. An Examination of What Has Been Accomplished & What Remains To Be Done This year marks the 50th anniversary of Vannevar Bush's landmark paper, "As We May Think," published first in the Atlantic Monthly and subsequently in Life magazine. In honor of Dr. Bush's vision there will be a research symposium held at MIT, his academic home, on October 12 & 13, 1995. Our outstanding collection of speakers will discuss how they were influenced in their own work by Bush's vision and its technical legacy, what parts of the vision were realized and how, and what outstanding problems remain to be solved before the vision can be fully realized. Our program, which we plan to broadcast on the Internet via Mbone, is as follows: Thursday, October 12 9:00 a.m. You may find the following two references of interest: "From Memex to Hypertext: Vannevar Bush and the Mind's Machine" (James M.
Please see Dr. We have also assembled a timeline of Dr. Join W3C. W3C Members lead the development of Web standards and work with technology leaders in a respected, vendor-neutral forum. Learn how your organization can take a Web leadership role as a W3C Member or participate in a way best-suited to your organization's needs.
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