Coding for Non-Coders workshop

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Coding for Non- Coders

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Jim Holmes Executive Consultant, Guidepost Systems LLC [email protected] @aJimHolmes http://GuidepostSystems.com Who am I?

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The Leadership Journey https://leanpub.com/theleadershipjourney My Leadership Book

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This Course on Ministry of Testing https://ministryoftesting.com/dojo

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Code: https://github.com/jimholmes/CodingWorkshop

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Hello World

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What’s Writing Code Look Like to You?

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Writing Code is…

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Today’s Goals • Understand why coding is valuable for you • Get comfortable with writing simple code • Learn to write code and use code tools • Learn how to collaborate with developers • Gain confidence in working with code

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Today’s Blocks 1. How Code Works 2.Libraries, Code, Writing Tests! 3.More Tests, Lean Coffee (YOU choose what we cover!) 4.Code Katas

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This Course Will NOT •Make you a professional software engineer •Teach you in-depth coding concepts •Teach you how to use source control •Make you a master with an IDE

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This Course WILL •Give you a starting point for good conversations •Get you familiar with fundamentals of writing code •Get you comfortable enough to continue learning

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Block I: How Code Works

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Exercise: HelloWorld

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How Code Executes

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DISCLAIMER I am not a computer scientist. Some of this content may be metaphorically correct but technically incorrect.

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Coding for Non-Coders What The CPU Needs 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0010 1101

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Coding for Non-Coders What Humans Need Please do what I mean and not what I typed

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Coding for Non-Coders Interpreted Code Source Code File Interpreter

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Coding for Non-Coders Compiled Code Source Code File Compiler Executable

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Coding for Non-Coders Just-In-Time Code Source Code File Intermediate Compiler Intermediate File JIT Compiler

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• CPUs only speak binary • Each type of CPU is unique • Text => Executable varies by language platform • Execution models vary (Interpreted, JIT, compiled) Coding for Non-Coders Recap

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• Procedural == Straight line of execution • C, Pascal, Cobol • Object Oriented == Everything is a Thing • Java, Python, C++, .NET, Java, many others • Functional == Highly structured • Lisp, Haskell, F#, many others Coding for Non-Coders General Types of Programming

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• camelCasing • Common in Java • PascalCasing • .NET and others • behavior_driven_development • Ruby, BDD enthusiasts Coding for Non-Coders Naming Conventions

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• Naming • Recursion • Off-by-one errors Coding for Non-Coders Two Hardest Things in Programming

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Follow your team’s conventions

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• Classes == A thing • Methods == Behaviors • Properties == Attributes/Characteristics • Inheritance == Share common traits • Encapsulation == Hide information Coding for Non-Coders A Bit on OOP

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Animal Dog Brittany Spaniel

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Exercise: Create Animal, Dog, BrittanySpaniel

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Namespaces

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MyApp InputOutput Display Threading Disk USB Video Thread MyApp.IO.Disk.Reader MyApp.IO.USB.Reader Reader Reader