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Programming for People

  • Hello I am Samson

  • And today I would like to talk to you about writing code

  • Today you have all learned about programming

  • When people think about programing they generally think about comunicating with a computer

  • "It's all just 1s and 0s!" because just makes is simple...

  • Originally it was very important you talked to computers as efficiently as possible

  • As computers got faster it got easer to add levels of abstraction meaning you could start to write programs for people

  • Grace Hopper was the first person to write a compiler

  • Compilters translated human readable code into the machine code

  • As computers have gotten faster we have been able to have languages that are easier and easier for people to read

  • Ruby is a great example of this

  • But lets not kid ourselves

  • This [show scary method] is not that easy to read

  • Lets step back for a minute

  • We write programs so we can communicate with computers

  • But we write these programs to people to use

  • Programs are everywhere and need to be keeped up to date

  • Programming has also become social

  • And we are all standing on the shoulders of giants when we code

  • So even if you are writing code by yourself you are likely going to have to read other peoples code

  • And more than likely others will be reading your code

  • We have got to the point where it is way more important for your code to be for people than for it to be for machines

  • So how do we code for people?

  • Object Oriented programing helps us keep our code organised

  • When we write objects the goal is to make sure they only do 1 thing

  • When they try to do more than one thing

  • This happens [show scary code again]

  • A woman named Sandi Metz has proposed 4 rules to help with this

  • [show 4 rules: https://gist.github.com/henrik/4509394]

  • I am going to use 1 of them to make this scarry code

  • [highlight rule 2 "Your methods can be no longer than five lines of code."]

  • [scary code]

  • Into code that is much easier for people to read

  • [fake nice method]

  • [do a run though fixing scary method into nice readable small ones]

  • As you can see our code is not much easier to digest

  • It almost has a naritive when you read it

  • The next programmer that reads your code will likely thank you for your small methods. Maybe even give you a hug! #FridayHug

  • Thank you for your time

  • Talk inspired by Sandi Metz (@sandimetz), Katrina Owen (@kytrinyx), and Avdi Grimm (@avdi)

  • You can find me on Twitter @ootoovak, on Github at https://github.com/ootoovak and these slides on Speaker Deck here https://speakerdeck.com/ootoovak