johnkary/rethinking-loops

Supplemental code and practice katas for John Kary’s talk Rethinking Loops.

v1.0.0 2016-03-05 04:38 UTC

Requires

• php: >=5.6.0
• doctrine/collections: ^1.3
• ericpoe/haystack: ^1.0.2
• kapolos/pramda: 0.9.0.x-dev
• mtdowling/transducers: ^0.3.0

Requires (Dev)

• phpunit/phpunit: ^5.2

MIT

• John Kary
• Eric Poe

README

Playground for ideas presented in John Kary's talk Rethinking Loops. Can you implement these kata's without using loops? Without control statements?

Viewing Slides

$ git clone https://github.com/johnkary/rethinkingloops.git rethinkingloops
$ cd !$
$ php -S 127.0.0.1:4000 -t slides/
$ open http://127.0.0.1:4000

Install for working on katas

Create a new project based on this project using Composer.

$ composer create-project johnkary/rethinking-loops
$ cd rethinking-loops

Writing Katas

Run the unit tests. The failing tests show which katas you have yet to implement:

$ vendor/bin/phpunit

Open your editor and begin hacking on one of the katas.

• Fizz Buzz
  • Haystack\FizzBuzz
• Some other kata?

Re-run the unit tests. If tests pass your implementation works!

Kata: FizzBuzz

Write a program that prints the numbers from 1 to 100. But for multiples of three print "Fizz" instead of the number and for the multiples of five print "Buzz". For numbers which are multiples of both three and five print "FizzBuzz".

Run all tests for Fizz Buzz.

$ vendor/bin/phpunit tests/FizzBuzzTest.php