## +21 ## Back to Basics: Designing Classes (part 2 of 2) ## KLAUS IGLBERGER 20 21 October 24-29 C++ Trainer/Consultant Author of the bl $ \text{ze} $ C++ math library (Co-)Organizer of the Munich duplication to enable you to change everything in one place (the DRY principle). Guideline: Design classes for easy change. ## Data Member Initialization In order to reduce duplication, we could use delegating Design Decisions Guideline: Encapsulate design decisions (i.e. variation points). Guideline: Design classes for easy change. ## Qualified/Modified Member Data ## Back to Basics: Class Design (Part 1) The

## +21 ## Back to Basics: Designing Classes (part 1 of 2) ## KLAUS IGLBERGER 20 21 October 24-29 C++ Trainer/Consultant Author of the bl $ \text{ze} $ C++ math library (Co-)Organizer of the Munich Beck, TDD by Example) ## The Challenge of Class Design Guideline: Design classes for easy change. Guideline: Design classes for easy extensions. ## Design Guidelines ## Back to Basics: Class Design // ... }; Using inheritance naively to solve our problem easily leads to ... ... many derived classes; ... ridiculous class names; ... deep inheritance hierarchies; ... duplication between similar implementations

4 TransLine ..... 4 Via Size ..... 6 Track Width ..... 6 Electrical Spacing ..... 7 Board-Classes ..... 7 ## Reference manual ## Copyright This document is Copyright © 2019-2021 by its contributors Regulators • Track Width • Electrical Spacing • Trans Line • RF Attenuators • Color Code • Board Classes ## Calculators ## Regulators This calculator helps with the task of finding the values of the Regulators RF Attenuators E-Series Color Code TransLine Via Size Track Width Electrical Spacing Board Classes Inputs Required resistance: 4.6 kΩ Exclude value 1: Exclude value 2: KΩ kΩ KΩ kΩ KΩ kΩ KΩ

4 TransLine ..... 4 Via Size ..... 6 Track Width ..... 6 Electrical Spacing ..... 7 Board-Classes ..... 7 ## Reference manual ## Copyright This document is Copyright © 2019-2021 by its contributors Regulators • Track Width • Electrical Spacing • Trans Line • RF Attenuators • Color Code • Board Classes ## Calculators ## Regulators This calculator helps with the task of finding the values of the Regulators RF Attenuators E-Series Color Code TransLine Via Size Track Width Electrical Spacing Board Classes Inputs Required resistance: 4.6 kΩ Exclude value 1: Exclude value 2: KΩ kΩ KΩ kΩ KΩ kΩ KΩ

262 3.7 tunicodecharmapping ..... 262 3.8 tunicodemap ..... 263 Reference for unit 'Classes' ..... 264 4.1 Used units ..... 264 4.2 Overview ..... 264 4.3 Constants, types and variables both a forward and backward mapping. # Reference for unit 'Classes' ### 4.1 Used units Table 4.1: Used units by unit 'Classes' |Name|Page| |---|---| |rtlconsts|??| |System|1331| |sysutils|1598| |Types|1901| |TypInfo|1937| ### 4.2 Overview This documentation describes the FPC classes unit. The Classes unit contains basic classes for the Free Component Library (FCL): • a TList (406) class for maintaining

rapidement des: • diagrammes de séquence • diagrammes de cas d'utilisation • diagrammes de classes • diagrammes d'activité • diagrammes de composant • diagrammes d'état • diagrammes d'objet 556cd7/p44_2.jpg) ### 2.10 Changer les directions des flèches Par défaut, les liens entre les classes ont deux tirets -- et sont orientés verticalement. Il est possible de mettre des liens horizontaux [Image](/uploads/documents/a/8/6/1/a86128af9ebff66bb2b34019b3556cd7/p48_2.jpg) ## 3 Diagramme de classes ### 3.1 Declaring element ![Image](/uploads/documents/a/8/6/1/a86128af9ebff66bb2b34019b3556cd7/p49_1

appear immediately after the parentheses. 1 sort([1, 5, 3, 12, 2]) { $0 > $1 } ## Objects and Classes Use class followed by the class's name to create a class. A property declaration in a class their superclass name after their class name, separated by a colon. There is no requirement for classes to subclass any standard root class, so you can include or omit a superclass as needed. Methods Square(sideLength: 50, name: "larger square") triangleAndSquare.triangle.sideLength Methods on classes have one important difference from functions. Parameter names in functions are used only within the

and analysis of some key concepts in Django CMS. ## Reference Technical reference material, for classes, methods, APIs, commands. ## Join us online django CMS is supported by a friendly and very knowledgeable placeholder): context.update({'instance': instance}) return context ## Note All plugin classes must inherit from cms.plugin_base.CMSPluginBase and must register themselves with the plugin_pool Admin, and gives you a shortcut for creating a new Poll. There’s a lot more to Django CMS toolbar classes than this - see How to extend the Toolbar for more. # Extending the navigation menu You may have

rapidement des: • diagrammes de séquence • diagrammes de cas d'utilisation • diagrammes de classes • diagrammes d'objet • diagrammes d'activité • diagrammes de composant • diagrammes de 48299/p53_1.jpg) ### 2.10 Changer les directions des flèches Par défaut, les liens entre les classes ont deux tirets -- et sont orientés verticalement. Il est possible de mettre des liens horizontaux et QA-3816] [Voir une fonctionnalité similaire sur le diagramme de déploiement ou le diagramme de classes] ### 2.17 Modifier la couleur et le style d'un élément (style en ligne) Vous pouvez modifier

SUCCESS? # UNDERSTANDING CODE IS HARD, WRITING CODE IS EASY We love writing code! We have tools! Classes, inheritance, variant, optional, virtual functions!  { // ... } }; SHARING CODE AND DATA: GENERIC CLASSES ## SHARING CODE AND DATA: GENERIC CLASSES • Curiously Recurring Template Pattern (CRTP) • Compile-time polymorphism Reusing interface and data: Generic Classes ## CODE REUSE • Implementation decision: DRY • Reusing algorithm: Generic Function • Reusing interface and data: Generic Classes • We reuse in unrelated contexts