Object Oriented Design

Download Smalltalk, Objects and Design by Chamond Liu PDF

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By Chamond Liu

This reference and textual content treats the Smalltalk programming approach and the net of object-oriented rules inside of and round it. hence it truly is greater than a consultant to the language; it additionally examines Smalltalk in its technical and historic environment, and alongside the best way addresses the questions that each Smalltalk developer eventually obviously wonders approximately. Assuming not anything greater than basic programming event, it starts with what gadgets and sessions are, and finally progresses to sophisticated issues reminiscent of the excellence among forms and periods. Going past common programming language books, it additionally covers an important layout styles and the way to jot down them in Smalltalk. The thrust then isn't really basically programming in Smalltalk with gadgets, yet pondering and designing successfully with items. This version is a reprint of the unique 1996 version. even though the intervening years have introduced the accustomed fast adjustments within the computing undefined, the rules provided right here stay as proper now as then. "Three of my favourite issues are Smalltalk, items, and layout. Chamond Liu's publication is the correct mix of those issues. I heartily suggest this e-book to practitioners who don't need to learn a dry therapy on layout method or one more programming publication. you'll be taken care of to parts of fine layout, a old point of view, layout styles demystified and coded in Smalltalk, and simply the right combination of Smalltalk programming and item concepts."—Rebecca Wirfs-Brock, writer of Designing Object-Oriented software program "Well-written and well-thought-out. . . . The bankruptcy on layout styles specifically is first-rate."—Doug Lea, writer of Concurrent Programming in Java, and Object-Oriented procedure improvement "One of these infrequent books that rewards either newcomers and specialists with insights applicable to their degrees. moreover, the writing style—combining incisiveness and grace—makes it a true excitement to read."—Dave Collins, writer of Designing Object-Oriented person Interfaces "Best ebook on Smalltalk i have seen!"—Sherman Alpert, writer of The layout styles Smalltalk significant other ". . . approachable, literate, enjoyable, actual and diversified . . . the writing is of the top calibre."—Ralph Johnson, writer of layout styles: parts of Reusable OO software program "I am very inspired with it. . . . in contrast to the entire different books, it covers all the vital matters correct to powerful realizing of the language below one cover."—Ed Klimas, writer of Smalltalk with type "What I cherished so much approximately this booklet used to be the boldness with which Liu provides quite a lot of subject matters: items, structure, gui, frameworks, layout, patterns—all the appropriate stuff. If a brilliant developer from another department of our self-discipline have been to take advantage of his ebook as his in simple terms resource of knowledge, he may come off as savvy and good attached, even at a Smalltalk convention. And he may benefit from the adventure too, on account that Liu by no means talks all the way down to his readers."—Ward Cunningham, CRC Card inventor "A very stable and exciting ebook through a professional communicator . . .. newbies and previous arms alike will locate worthwhile rules, enjoyable writing and thought-provoking allusions to broader technical, literary and philosophical topics."—Martin Nally, leader architect of IBM Smalltalk and VisualAge ". . . the scope and point very fascinating . . . a really worthwhile number of issues that are unfold round and difficult to discover . . ."—Tom Morgan, supervisor of expertise improvement, Brooklyn Union gasoline "A rather well written ebook; a excitement to learn disguise to hide. stable chapters on layout styles, metaclasses and rubbish assortment, and so forth. you could inform via the writing type that the writer can be a teacher—conveys details gracefully and successfully. hugely recommended."—Paul Jasek, Chubb & Son, Inc.

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Una interfaz es una clase que realiza operaciones y que no tiene atributos, es un conjunto de acciones que tal vez quiera utilizar una y otra vez en su modelo. 12. Un estereotipo le permite crear nuevos elernentos a partir de otros existences. -lnterfaz* Clase 1 Para que tantos diagramas Como puede ver, 10s diagramas del UML le permiten examinar un sistema desde distintos puntos de vista. Es importante recalcar que en un modelo UML no es necesario que aparezcan todos 10s diagramas. De hecho, la mayoria de 10s modelos UML contienen un subconjunto de 10s diagramas que he indicado.

Entre mis atributos y acciones tome en cuenta, mayor sera la similitud de su modelo con la realidad. En el ejemplo de la lavadora, tendra un modelo mis exacto si incluye 10s siguientes atributos: volumen del tambor, cronbmetro interno, trampa, motor y velocidad del motor. 2). Lavadora La adicidn de atributos y acciones a1 mode10 10 acerca a la realidad. marca modeto numeroserie capacidad volumenTambor cronometrolnterno trampa motor velocidadMotor agregarRopa0 agregarDetergente0 sacarRropa0 agregarBlanqueador0 cronometrarRemojo() cronometrarLavado() cronometrarEnjuague() cronometrarCentrifugado() Algunos conceptos La orientacidn a objetos se refiere a algo m b que tan s610 atributos y acciones; tambitn considera otros aspectos.

Lavadora Una nota adjunta proporciona mayor informacion respecto a la clase. marca modelo numeroserie capacidad ---- agregarRopa0 sacarRopa() agregarDetergente0 activar() gubernamental EV5-2241 de 10s Estados Unidos para la generaclon de numeros de serle Una nota puede contener tanto una imagen como texto. Que es lo que hacen las clases y como encontrarlas Las clases son el vocabulario y terminologia de un h e a del conocimiento. Conforme hable con los clientes, analice su 6rea de conocimiento y diseiie sistemas de computacidn que resuelvan 10s problemas de dicha kea, comprenderh la terrninologia y modelarh 10s tkrminos como clases en el UML.

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