LinkedIn principal author Doug Winnie explains how to work with existing classes by using the instance name to access the class members, or properties and methods. Doug also introduces the concept of static members, which are part of the class and are shared across all instances of the class throughout your program.
- As a programmer, you will work with pre-built classes…that are part of the programming language and SDK…or Software Development Kit that you'll be working with.…For instance, you might be working with a button component…that is part of iOS, Android, Windows,…HTML, or another technology.…That button is an object, just like any other…and is defined by a class.…When you create your instance of a class,…you instantiate it and the code in the constructor runs.…
The constructor is helpful if you need to set things up…in the instance when it runs.…When you work with an instance, you will access properties…and methods inside it, defined by the class,…using the instance name.…This is done by taking the instance name of the object…and then access the property or method.…To modify a property, you'll use the property name…and use the assignment operator to assign a value…to the class instance property.…
To use a method, you will use a method name…just like any other function you would write…and provide any parameters, if required,…
Author
Doug Winnie
Released
11/28/2016Join Doug Winnie as he explains the principles of programming and helps you connect to core concepts by exploring three ways that programmers perform their jobs. Doug starts by sharing the history of coding and then dives into functions, values, variables, and parameters used to define actions. He covers capturing input from users, creating conditional tests, using loops with arrays, and object-oriented programming basics. He also takes you beyond programming, into processes like debugging, refactoring, and building iteratively.
- Working with values and variables
- Breaking down tasks
- Customizing functions and parameters
- Building conditional tests
- Creating and changing arrays
- Working with objects and classes
- Debugging and refactoring code
- Going beyond the code as a programmer
Skill Level Beginner
Duration
Views
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Introduction
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Welcome1m 40s
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What you should know1m 3s
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1. Control Computers with Code
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History of programming2m 9s
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Forms of programming5m 12s
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2. Define Actions Using Code
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Break down tasks2m 29s
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Variables and scope2m 9s
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Return values from functions2m 15s
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Work with an API1m 27s
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3. Repeat Actions and Test for Conditions
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Capture input from the user3m 31s
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Create conditional tests4m 39s
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Use while loops2m 11s
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Use for loops3m 11s
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Use loops with arrays2m 5s
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4. Objects and OOP
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Everything is an object2m 21s
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Everything is a class4m 3s
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Extend classes2m 7s
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5. Beyond Programming
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Debug problems2m 50s
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Conclusion
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Next steps1m 19s
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Video: Work with existing classes and objects