How do you Learn New Skills? Emily Bache As a Professional - - PowerPoint PPT Presentation

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How do you Learn New Skills? Emily Bache As a Professional - - PowerPoint PPT Presentation

Oct 19, 2023 241 likes •773 views

How do you Learn New Skills? Emily Bache As a Professional Programmer - how do you learn new skills? Emily Bache @emilybache http://coding-is-like-cooking.info www.praqma.com Emily Bache Test Automation Specialist Senior Consultant at

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How do you Learn New Skills?

Emily Bache

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www.praqma.com

how do you learn new skills?

Emily Bache @emilybache http://coding-is-like-cooking.info

As a Professional Programmer -

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Emily Bache

Test Automation Specialist Senior Consultant at Praqma Author of “The Coding Dojo Handbook” @emilybache emily.bache@praqma.com

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Programming

flickr: Matylda Czarnecka

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Practical Coding Skills

using IDE shortcuts Pair Programming Test Driven Development Designing good Test Cases Refactoring Working incrementally, committing code often Designing using SOLID principles Object Oriented Paradigm Functional Programming Paradigm ...

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Test Driven Development

Red Green Refactor

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Why TDD?

design verification: the code does what you think it does work incrementally: share your changes often, maintain flow design benefits: isolated units should have low coupling & high cohesion refactoring support: Make changes with confidence Wonderful feeling of freedom & productivity!

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Self-testing code

You have self-testing code when you can run a series of automated tests against the code base and be confident that, should the tests pass, your code is free of any substantial defects. http://www.martinfowler.com/bliki/SelfTestingCode.html — Martin Fowler

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Agile Testing Pyramid

a few tests for the whole stack many ‘service’ tests, may be public or test-specific API majority are unit tests

http://www.mountaingoatsoftware.com/blog/the-forgotten-layer-of-the- test-automation-pyramid

UI API Unit

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TDD gives more than self- testing code

design verification: the code does what you think it does work incrementally: share your changes often, maintain flow design benefits: isolated units should have low coupling & high cohesion refactoring support: Make changes with confidence Wonderful feeling of freedom & productivity!

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Kent Beck in 2009

http://www.threeriversinstitute.org/blog/?p=291

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Learning to Ski

fmickr user nonanet

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Cross Country skiing

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Snowplow

flickr: MichaEli

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Parallel turns

fmickr user nonanet

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Test Driven Development

Red Green Refactor

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Training Course

image: htup://www.fmickr.com/photos/fboyd/

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Learn on-the-job

image: flickr user Lisamarie Babik

Pair Program & Get Stuff Done

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The Coding Dojo Dojo = The place you go to learn

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What happens at a dojo meeting?

5 – 15 or so coders write code, collaborate, discuss

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A Regular Coding Dojo

Your team meets for a coding dojo every so often practice skills you can use in production code

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Dojo Principles

The fjrst rule of the dojo:

You can’t discuss a technique without code You can’t show code without tests

Code without tests simply doesn’t exist!

The Dojo Principles: htup://bossavit.com/dojo/archives/2005_02.html

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Code Kata

In martial arts, a “Kata” is a sequence of moves that you learn. Dave Thomas proposed the idea

  • f the “Code Kata”

http://codekata.pragprog.com/

small exercises, that you repeat

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Code Kata - Leap Years

Write a function that returns true or false depending

  • n whether its input integer is a leap year or not.

A leap year is divisible by 4, but is not otherwise divisible by 100, unless it is also divisible by 400. Examples: 1996 --> true 2001 --> false 2000 --> true 1900 --> false

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2 kinds of Practice

Incidental Practice Deliberate Practice

  • Repeatedly doing something you can already

do, and improving at it

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Incidental Practice: Good Habits

“I’m not a great programmer; I’m just a good programmer with great habits.”

  • Kent Beck

quote from p57, “Refactoring” by Martin Fowler

image taken by Martin Fowler at XP2002

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US Military training philosophy

“Under pressure, you don’t rise to the occasion, you sink to the level of your training. That’s why we train so hard”

  • - A US Navy Seal
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Experience TDD

  • Experience what TDD feels like when it works
  • Recognise problems well suited to it
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Repeatedly practice the same Katas

In Karate there are some katas everyone learns There are some popular software katas lots of people have done

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Practice

Incidental Practice:

  • Repeatedly doing something you can already do,

and improving at it Deliberate Practice:

  • Trying to do something you can’t comfortably do
  • breaking down a skill into components you practice

separately

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Deliberate Practice

Need to feel safe Need to feel motivated

fmickr user antony_mayfjeld

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TDD skills

Designing Test Cases Refactoring Safely Driving Development with Tests Designing Clean Code

TDD is a composite skill

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TDD skills

Designing Test Cases Refactoring Safely Driving Development with Tests Designing Clean Code

In the dojo we can focus on one at a time

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TDD skills

Designing Test Cases Refactoring Safely Driving Development with Tests Designing Clean Code

Refactoring Katas: Tennis, Yatzy, Gilded Rose…

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Tennis Refactoring Kata

https://github.com/emilybache/Tennis-Refactoring-Kata

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TDD skills

Designing Test Cases Refactoring Safely Driving Development with Tests Designing Clean Code

SOLID principles Katas: Tyre Pressure, Leaderboard

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Tyre Pressure Kata

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TDD skills

Designing Test Cases Refactoring Safely Driving Development with Tests Designing Clean Code

Diamond Kata, ISBN

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Diamond Kata

https://github.com/emilybache/DiamondKata

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Diamond Kata

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TDD skills

Designing Test Cases Refactoring Safely Driving Development with Tests Designing Clean Code

Gilded Rose, Functional Code

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Functional Code Kata

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https://github.com/emilybache

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Essential Dojo Elements

Hold an introduction and retrospective Write tests as well as code Show your working Be a facilitator

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Dojo Principles: Mastery

If it seems hard, fjnd someone who can explain it. If it seems easy, explain to those who fjnd it hard. No-one has mastery in all areas: everyone will both teach & learn.

Sensei Henri Canditan by flickr user Flavio~

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Coding Dojos in practice

Paris Dojo Ruby & Python User Groups Consultant fmown-in for 5 or 6 sessions (semi) Regularly at Pagero

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Coding Dojos @ Pagero

Once a month

Standard structure

Short intro 45 minutes coding short retrospective (optional) repeat Kata

icons: Double-J Design, ballicons.net

One or Two hours

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Improving at TDD

http://cyber-dojo.org/ Tests failing Compiler/Syntax Error Tests Passing TDD at first dojo After 6 dojos

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Coding Dojo Summary

Better coding skills Teach and Learn in a Group Incidental & Deliberate Practice Have Fun!

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www.praqma.com

how do you learn new skills?

Emily Bache @emilybache http://coding-is-like-cooking.info

As a Professional Programmer -