Xem 1-20 trên 20 kết quả Abstraction library
  • Humans are characterized by having a large brain relative to body size, with a particularly well developed neocortex, prefrontal cortex and temporal lobes, making them capable of abstract reasoning, language, introspection, problem solving and culture through social learning. This mental capability, combined with the adaptation to bipedal locomotion that frees the hands for manipulating objects, has allowed humans to make far greater use of tools than any other living species on Earth.

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  • This book starts with an overview of PHP Data Objects (PDO), followed by getting started with PDO. Then it covers error handling, prepared statements, and handling rowsets, before covering advanced uses of PDO and an example of its use in an MVC application. Finally an appendix covers the new object-oriented features of PHP 5. This book will guide you through the data layer abstraction objects in PHP. PHP developers who need to use PDO for data abstraction.

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  • This book will introduce you to one of the most important extensions to PHP that are available, starting with PHP version 5.0—the PHP Data Objects, commonly known as PDO. PHP grew in to a very popular web programming language due to its simplicity and ease of use. One of the key factors of this growing success is the built-in possibility to access many popular relational database management systems (RDBMS), such as MySQL, PostgreSQL, and SQLite, to name just a few.

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  • ActionScript 3.0 Design Patterns takes you step by step through the process, first by explaining how design patterns provide a clear road map for structuring code that actually makes OOP languages easier to learn and use. You then learn about various types of design patterns and construct small abstract examples before trying your hand at building full-fledged working applications outlined in the book. Topics in ActionScript 3.0 Design Patterns include:

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  • One of these websites is maintained by the Eisenhower National Clearinghouse (ENC) for Mathematics and Science Education.5 The ENC is a centralized site that gathers educational materials and makes them available from its own computers. Content specialists find and acquire the rights to materials, write abstracts for the resources on the site, enter data, and maintain the site catalog—a resource-intensive process that ensures quality while slowing somewhat the provision of resources. A search engine allows users to find the materials in which they are interested.

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  • In many ways the .Net platform has asked ìwhat do developers waste time doingî and tried to improve developer performance. For example, the .NET virtual machine provides memory management, a task that takes up much developer time when it has to be done manually. A large and well-documented class library helps avoid re-inventing the same wheel many times over. Inter-operability between code in a number of languages is made trivial. The C# language was created alongside the .NET platform. Itcould be considered the ìnativeî language of .

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  • A number of different abstraction layers are available for PHP, most notably the PEAR DBI, Metabase and PHPLib. The one I'm going to use in this article is named ADODB (Active Data Objects DataBase), and it's one of the most full−featured and efficient PHP abstraction libraries available today.

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  • Albert Einstein once said everything should be made as simple as possible, but not simpler. Einstein could have been talking about programming languages, as the landscape is strewn with “simple” languages that, several versions later, have 500-page reference manuals! The truth is that we expect a lot of our programming languages.We demand support for en- capsulation and abstraction, type checking and exception handling, polymorphism and more.

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  • Mechanical engineers are also expected to understand and be able to apply basic concepts from chemistry, physics, chemical engineering, civil engineering, and electrical engineering. All mechanical engineering programs include multiple semesters of calculus, as well as advanced mathematical concepts including differential equations, partial differential equations, linear algebra, abstract algebra, and differential geometry, among others.

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  • An Abstract Stack (Stack ADT) is an abstract data type which emphasizes specific operations: Uses a explicit linear ordering, insertions and removals are performed individually, there are no restrictions on objects inserted into (pushed onto) the queue that object is designated the back of the queue,... This topic discusses the concept of a stack: Description of an Abstract Stack, list applications, implementation, example applications, standard template library.

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  • An Abstract Queue (Queue ADT) is an abstract data type that emphasizes specific operations: Uses a explicit linear ordering, insertions and removals are performed individually, there are no restrictions on objects inserted into (pushed onto) the queue - that object is designated the back of the queue,... This topic discusses the concept of a queue: Description of an Abstract Queue, list applications, implementation, queuing theory, standard template library.

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  • The imperative programming paradigm is the subject of Chapter 12. This chapter presents the following content: What makes a language imperative? Procedural abstraction, expressions and assignment, library support for data structures.

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  • Web Resources APPENDIX B 805 HotScripts.com—http://www.hotscripts.com—A great categorized selection of scripts. The site has scripts in various languages like PHP, ASP, and Perl. It has an excellent collection of PHP scripts. Updated very frequently. A must see if you are looking for scripts. PHP Base Library—http://phplib.netuse.de—A site used by developers for large-scale PHP 3 projects. Offers a library with a lot of tools for session management, which now comes built-in with PHP 4, as well as templating and database abstraction.

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  • While this new era dramatically increased the importance of the physical database design problem, it also exposed the severe limitations of the past techniques. The “expert system” based approach was no longer viable as building an external accurate model of index usage was no longer feasible. Therefore, the approach taken in [40] to use the optimizer’s cost model and statistics was the natural choice. However, even there we faced several key gaps in what [40] offered.

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  • LSI’s competitive advantage is its CAM library, one of the most comprehensive and unique Complementary Alternative Medicine database of any kind, cross-linking hundreds of disease and health conditions to nutritional and herbal remedy abstracts. The database, consisting of over 280,000 pages of text updated with all current material daily, is the largest database on alternative health in existence, and it represents an invaluable research and resource tool for health care providers as well as their patients.

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  • As a reaction to this complexity, we designed a new abstraction that allows us to express the simple computa- tions we were trying to perform but hides the messy de- tails of parallelization, fault-tolerance, data distribution and load balancing in a library. Our abstraction is in- spired by the map and reduce primitives present in Lisp and many other functional languages.

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  • GF is a grammar formalism that has a powerful type system and module system, permitting a high level of abstraction and division of labour in grammar writing. GF is suited both for expert linguists, who appreciate its capacity of generalizations and conciseness, and for beginners, who benefit from its static type checker and, in particular, the GF Resource Grammar Library, which currently covers 12 languages.

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  • From this list the information specialist sifted and removed any irrelevant material based on the title or abstract before passing to the researcher. All the remaining articles were then stored in a Reference Manager electronic library. Searches were updated and re-run 6–8 weeks before the stakeholder consultation, thereby ensuring that the latest relevant published evidence was included in the database. Any evidence published after this date was not included.

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  • A resource grammar is a standard library for the GF grammar formalism. It raises the abstraction level of writing domainspecific grammars by taking care of the general grammatical rules of a language. GF resource grammars have been built in parallel for eleven languages and share a common interface, which simplifies multilingual applications. We reflect on our experience with the Russian resource grammar trying to answer the questions: how well Russian fits into the common interface and where the line between languageindependent and language-specific should be drawn. ...

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  • Minireview Maize DNA-sequencing strategies and genome organization Ron J Okagaki and Ronald L Phillips Address: Department of Agronomy and Plant Genetics, and Center for Plant and Microbial Genomics, The University of Minnesota, St. Paul, MN 55108, USA. Correspondence: Ron J Okagaki. E-mail: okaga002@tc.umn.edu comment reviews Published: 16 April 2004 Genome Biology 2004, 5:223 The electronic version of this article is the complete one and can be found online at http://genomebiology.

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