Katie Hayden katherineimogene

Building Blocks

Algorithmia API as building blocks for your application

The Algorithmia API has a well-defined protocol. Use the same pattern to call any algorithm, and the output will be in an easily handled format like a string or array. The consistency of inputs and outputs of the API enables developers to use many different algorithms as building blocks to construct dynamic applications.

Before we go through an example, please take a look at the docs. There are instructions about obtaining your API key and specifications for the protocol. Everything you need to know, really.

For our example, let's say I want to know what the first five articles on the popular page of GeekWire are about, and I want to know what people are tweeting about them.

There are algorithms in the Marketplace for that.

https://developers.google.com/+/quickstart/ruby

create a project https://console.developers.google.com/project/
on the left under APIs and Auth. Turn on the APIs you want to use
Credentials tab, generate client ID/secrets
Make sure the required information is filled out in the Consent tab.

For sign in, do it client side with JavaScript: https://developers.google.com/+/web/signin/javascript-flow

For anything else, check out HTTParty

Git workflow starting with new feature

git pull origin master
git co -b FEATURE_BRANCH
do work
git co master checks out local master
git pull origin merges most recent master into local master
git co FEATURE_BRANCH
git merge master merges local master into feature branch
resolve any conflicts
git push origin FEATURE_BRANCH

Add a remote repository

To bring code into our project

Make sure you're in the directory where the code should live
Add remote git remote add REMOTE_NAME REPOSITORY_URI_FROM_GITHUB
To see all remotes git remote -v
Pull in remote code git pull REMOTE_NAME BRANCH_NAME
Resolve merge conflicts (README,etc) and commit

HEROKU

heroku create
heroke apps:rename NEW APP NAME
Checkout your branch locally git checkout <branch_name>
Add Procfile to root of the application.

# Procfile
web: bundle exec rackup config.ru -p $PORT

Add Heroku master as remote branch

How can I use `let` and `context` to DRY up my tests?

Let

Let blocks allow you to provide some input to the subject block that change in various contexts. You can simply provide an alternative 'let' block for a given value and not have to duplicate the setup code for the subject over again.

For the method defined by let, the initialization code only runs if the example calls it. let! will eager-load the variable. initializes it before it's ever used.

  # this:
  let(:foo) { Foo.new }

	class BoggleBoard

	# 1. Initialize
	def initialize(dice_grid)
	@dice_grid = dice_grid
	end

	# 2. create_word
	def create_word(*coords)
	coords.map { \|coord\| @dice_grid[coord.first][coord.last]}.join("")