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Author:
Publisher: Club Lighthouse Publishing
ISBN: 1897532350
Category :
Languages : en
Pages : 102
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Book Description
Author:
Publisher: Club Lighthouse Publishing
ISBN: 1897532350
Category :
Languages : en
Pages : 102
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category : Public services (Libraries)
Languages : en
Pages : 39
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Book Description
Author: R. RICHARD
Publisher: Club Lighthouse Publishing
ISBN: 1772170364
Category : Fiction
Languages : en
Pages : 154
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Book Description
James X. Owen isn't a people person. He was sent into what was to be a suicide mission to Chile. With the aid of an FBI lady named Susan Channing, the two of them escaped. The two are then given yet another assignment, what the FBI thinks is a suicide mission. They complete the mission, using Jim's ferocity and Susan's skill with guns, only to find themselves stranded in Mexico. Well, Jim had foreseen the problem and maybe his escape plan might work.
Author: Antoine Doucet
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
The Scheme programming language is known for its powerful macro system. With Scheme source code represented as actual Scheme data, macro transformations allow the programmer, using that data, to act directly on the underlying abstract syntax tree. Macro transformations use a similar syntax to regular procedures but, they define procedures meant to be executed at compile time. Those procedures return an abstract syntax tree representation to be substituted at the transformer's call location. Procedures executed at compile-time use the same language power as run-time procedures. With the macro system, the programmer can create specialized syntax rules without additional performance costs. This also allows for code abstractions without the expected run-time cost of closure creations. Scheme's representation of source code using values inherits that virtue from the Lisp programming language. Source code is represented as a list of symbols, or lists of other lists: a structure coined S-expressions. However, with this simplistic approach, accidental name clashes can occur. The binding to which an identifier refers to is determined by the lexical context of that identifier. By moving an identifier around in the abstract syntax tree, it can be caught within the lexical context of another binding definition with the same name. This can cause unexpected behavior for programmers as the choice of names can create substantial changes in the program. Accidental name clashes can be manually fixed in the code, using name obfuscation, for instance. However, the programmer becomes responsible for the program's safety. The automatic preservation of referential transparency is called hygiene and was thoroughly studied in the context of lambda calculus and Lisp-like languages. The latest Scheme revised report, used as a specification for the language, extend the language with hygienic macro transformations. Up to this point, the Gambit Scheme implementation wasn't providing a built-in hygienic macro system. As a contribution, we re-implemented Gambit's macro system to support hygienic transformations at its core. The algorithm we chose is based on the set of scopes algorithm, implemented in the Racket language by Matthew Flatt. The Racket language is heavily based on Scheme but, diverges on some core features. One key aspect of the Racket language is its extensive hygienic syntactic macro system, on which most core features are built on: the algorithm was robustly tested in that context. In this thesis, we will give an overview of the Scheme language and its syntax. We will state the hygiene problem and describe different strategies used to enforce hygiene automatically. Our algorithmic choice is then justified and formalized. Finally, we present the original Gambit macro system and explain the changes required. We also provide a validity and performance analysis, comparing the original Gambit implementation to our new system.
Author: Association for Computing Machinery
Publisher: Pearson Education
ISBN: 9780897913683
Category : Computer science
Languages : en
Pages : 362
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Book Description
Author: Barry O'Sullivan
Publisher: Springer
ISBN: 3319104284
Category : Mathematics
Languages : en
Pages : 965
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Book Description
This book constitutes the refereed conference proceedings of the 20th International Conference on Principles and Practice of Constraint Programming, CP 2014, held in Lyon, France, in September 2014. The 65 revised papers presented together with 4 invited talks were carefully selected from 108 submissions. The scope of CP 2014 includes all aspects of computing with constraints, including theory, algorithms, environments, languages, models, systems, and applications such as decision making, resource allocation, and agreement technologies.
Author:
Publisher: Pearson Education
ISBN: 9781581134872
Category : Computer science
Languages : en
Pages : 298
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Book Description
Author: S. Doaitse Swierstra
Publisher: Springer
ISBN: 354049099X
Category : Computers
Languages : en
Pages : 317
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Book Description
This is the second time that of ESOP has formed part of the ETAPS cluster of conferences, workshops, working group meetings and other associated activities. One of the results of colocatingso many conferences is a reduction in the number of possibilities to submit a paper to a European conference and the increased competition between conferences that occurs when boundaries between indiv- ual conferences have not yet become well established. This may have been the reason for the fact that only 44 submission were received this year. On the other hand we feel that the average quality of submissions has gone up, and thus the program committee was able to select 18 good papers, only one less than the year before. The program committee did not meet physically, and all discussion was done usinga Web-driven data base system. Despite some mixed feelings there is an overall tendency to appreciate the extra time available for giving papers a s- ond look and really going into comments made by other program committee members. I want to thank my fellow program committee members for the work they have put into the refereeingprocess and the valuable feedback they have given to authors. I want to thank the referees for their work and many detailed comments, and ?nally I want to thank everyone who has submitted a paper: without authors, no conference.
Author: Maurice G. Burnett
Publisher:
ISBN:
Category : Artificial satellites, American
Languages : en
Pages : 386
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Book Description
The United States developed the Gambit and Hexagon programs to improve the nation's means for peering over the iron curtain that separated western democracies from east European and Asian communist countries. The inability to gain insight into vast "denied areas" required exceptional systems to understand threats posed by US adversaries. Corona was the first imagery satellite system to help see into those areas. Hexagon began as a Central Intelligence Agency (CIA) program with the first concepts proposed in 1964. The CIA's primary goal was to develop an imagery system with Corona-like ability to image wide swaths of the earth, but with resolution equivalent to Gambit. Such a system would afford the United States even greater advantages monitoring the arms race that had developed with the nation's adversaries. The Hexagon mapping camera flew on 12 of the 20 Hexagon missions. It proved to be a remarkably efficient and prodigious producer of imagery for mapping purposes. The mapping camera system was successful by every standard including technical capabilities, reliability, and capacity.
Author:
Publisher: Club Lighthouse Publishing
ISBN: 1927337275
Category :
Languages : en
Pages : 263
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Book Description
