Inheritance is a useful mechanism for factoring and reusing code. However, it has limitations for building extensible systems. We describe nested inheritance, a mechanism that addresses some of the limitations of ordi...
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Inheritance is a useful mechanism for factoring and reusing code. However, it has limitations for building extensible systems. We describe nested inheritance, a mechanism that addresses some of the limitations of ordinary inheritance and other code reuse mechanisms. Using our experience with an extensible compiler framework, we show how nested inheritance can be used to construct highly extensible software frameworks. The essential aspects of nested inheritance are formalized in a simple object-oriented language with an operational semantics and type system. The type system of this language is sound, so no run-time type checking is required to implement it and no run-time type errors can occur. We describe our implementation of nested inheritance as an unobtrusive extension of the Java language, called Jx. Our prototype implementation translates Jx code to ordinary Java code, without duplicating inherited code.
In object-orientedprogramming (OOP) languages, the ability to encapsulate software concerns of the dominant decomposition in objects is the key to reaching high modularity and loss of complexity in large scale design...
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In object-orientedprogramming (OOP) languages, the ability to encapsulate software concerns of the dominant decomposition in objects is the key to reaching high modularity and loss of complexity in large scale designs. However, distributed-memory parallelism tends to break modularity, encapsulation, and the functional independence of objects, since parallel computations cannot be encapsulated in individual objects, which reside in a single address space. For reconciling object-orientation and distributed-memory parallelism, this paper introduces OOPP (object-oriented Parallel programming), a style of OOP where objects are distributed by default. As an extension of C++, a widespread language in HPC, the PObC++ language has been designed and prototyped, incorporating the ideas of OOPP. (C) 2013 Elsevier B.V. All rights reserved.
The central concern of this paper is the production of so-called abstract denotational models for object-orientedlanguages. These models ascribe equal representations to objects with the same observable behaviour. In...
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A practical and a fast-paced guide that gives you all the information you need to start programming using *** book is for developers who love C/C++ for low latency and speed but who also require the ability to add mor...
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ISBN:
(数字)9781783280803
ISBN:
(纸本)1783280794;9781783280797
A practical and a fast-paced guide that gives you all the information you need to start programming using *** book is for developers who love C/C++ for low latency and speed but who also require the ability to add more dynamic features to applications both fast and reliably. It will also show you how you can get new applications off the ground by reusing Python libraries to get started.
According to the classical invariance criterion, a term is logical if and only if its extension is isomorphism-invariant. However, a number of authors have devised examples that challenge the sufficiency of this condi...
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According to the classical invariance criterion, a term is logical if and only if its extension is isomorphism-invariant. However, a number of authors have devised examples that challenge the sufficiency of this condition: accepting these examples as logical constants would introduce objectionable contingent elements into logic. Recently, Gil Sagi has responded that these objections are based on a fallacious inference from the modal status of a sentence to the modal status of the proposition expressed by that sentence. The present paper demonstrates that Sagi’s response, though successful, is futile. There is another objection, based on the same type of example, that is not susceptible to Sagi’s criticism: accepting the examples as logical terms would have the fatal consequence that any contingent metalanguage sentence is entailed by the truth of some logically true object-language sentence. I conclude with a sketch of an alternative to the classical invariance criterion.
A practical guide written in a tutorialstyle, this book walks you stepbystep through 12 individual projects to create real world apps. Each project moves through design and implementation of the app, and also provides...
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ISBN:
(数字)9781783287932
ISBN:
(纸本)9781783287925;9781783287932
A practical guide written in a tutorialstyle, this book walks you stepbystep through 12 individual projects to create real world apps. Each project moves through design and implementation of the app, and also provides suggestions to enhance it. If you are a mobile developer who is familiar with Phonegap basics and wants to quickly create some cool mobile applications with Phonegap, this book is for you. You should have some experience working with JavaScript, HTML, CSS, and also be able to use your operating system''s commandline interface. No experience with Java, C#, or objective C is required.
ABAP has been around for a while, but that doesn't mean your programming has to be stuck in the past. Want to master test-driven development? Decipher BOPF? Manage BRF+? Explore ABAP 7.4? With clear explanations, ...
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ISBN:
(纸本)9781493211616
ABAP has been around for a while, but that doesn't mean your programming has to be stuck in the past. Want to master test-driven development? Decipher BOPF? Manage BRF+? Explore ABAP 7.4? With clear explanations, engaging examples, and downloadable code, this book is your ride to the future. After all: If you're going to build something with ABAP, why not do it with some style? * Design your ABAP to be modern, efficient, and effective * Discover the latest and greatest features in the ABAP universe * Explore the new worlds of SAP HANA, BRF+, BOPF, and more programming Tools ABAP is easier to program than ever, as long as you know all the tricks. Learn about Eclipse, ABAP 7.4 language features, and all the other modern tools at your disposal. Business Logic Technologies BRF+ and BOPF are only some of the recent developments in the ABAP world. Make sure your skills are up to date. User Interfaces If you're still working with SAP GUI, SAP has got a lot to show you. Learn about Web Dynpro ABAP, Floorplan Manager, and SAPUI5. * AS ABAP 7.4 * Eclipse * Test-driven development * ABAP Test Cockpit * Exception classes * BOPF * BRF+ * SALV * WDA and Floorplan Manager * SAPUI5 * Shared memory * SAP HANA
Práce se zabývá návrhem a popisem dynamického reflektivního jazyka, založeného na prototypování. Nejprve jsou vysvětleny principy typické pro tuto skupinu jazyků a js...
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Práce se zabývá návrhem a popisem dynamického reflektivního jazyka, založeného na prototypování. Nejprve jsou vysvětleny principy typické pro tuto skupinu jazyků a jsou stručně popsáni známí představitelé. Dále je krátce pojednáno o jazycích pro matematické výpočty. Poté práce podrobně popisuje navržený programovací jazyk, jeho gramatiku a sémantiku. Jsou vysvětleny principy typové kontroly a dědičnosti. Je také ukázáno, jakým způsobem jsou implementovány základní řídící konstrukce známé z jiných jazyků. V další části je představen návrh virtuálního stroje pro vytvořený jazyk. Je vysvětlen použitý výpočetní model, organizace objektové paměti a interní reprezentace význačných struktur navrženého jazyka. Nakonec je rozebrána dynamická typová kontrola, překladač a způsob překladu typických konstrukcí do vnitřního kódu virtuálního stroje.
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