ryanflach

Turing School Prework

Task A- Practice Typing:

• screenshots of scores will be posted in comments

Task B- Algorithmic Thinking & Logic:

• screenshots of completed sections will be posted in comments

Task C- Create your Gist:

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Module 1 Week 3 Diagnostic

This exercise is intended to help you assess your progress with the concepts and techniques we've covered during the week.

For these questions, write a short snippet of code that meets the requirement. In cases where the question mentions a "given" data value, use the variable given to refer to it (instead of re-writing the information).

ryanflach

How The Web Works

Today we are going to investigate the way the web works.

Materials:

• First let's read MDN HOW WEB WORKS.
• Next let's watch a few quick examples of how the internet works.
• And [how IP addresses work](https://www.youtube.com/watch?v=KFooN7Mu0IM - how IP addresses work).
• Finally let's tie these things together and watch a video about DNS - what happens when you type an address into a web browser.

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How does the Agile model compare to the Waterfall model?

• Agile is based around regular adjustments, constant feedback, and planning of short-term deliverables, while the Waterfall model plans out the entire project from start to finish at the beginning.

Why do you think Agile is so popular in software development?

• Because it allows for consistent feedback from the client and reduces the amount of wasted time and effort put into areas of the product that may not be desired by the client.

Do you think Agile is applicable to all industries?

• Yes and no. Melinda Gates has stated that many non-profits could take cues from Coca-Cola, due to their use of constant feedback to adjust their approach and strategies in developing markets. However, as we discussed in class, construction work typically utilizes a Waterfall approach, and in similar instances where modifications to previously completed elements is very difficult or impossible, Agile may not be appropriate.

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Project workflow:

0. Load/Reload waffle.

• Get most current list of actions for the project.

1. Choose a card from the backlog in waffle. If we're working separately, it's best to move that card that you've chosen into ready and perhaps assign it to yourself as well.

• Make sure multiple team members aren't working on the same issue; ensure everyone knows what each other is working on.

2. git checkout master
3. git pull origin master

• Ensure you're starting on the master branch and have the most recent changes pulled down.

4. run rspec

• Make sure there are no outstanding issues with code on master.

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1. What is a primary key?

• The unique identifier for each row in a table.

2. What is a foreign key?

• A reference in one table to the primary key in another table that it shares a relationship with.

3. Why would one row of data have both primary and foreign keys?

• When a relationship exists between the tables that requires one table to track a row in another.

4. What is Rails' convention for the column name of the primary key?

• id

5. What is Rails' convention for the column name of a foreign key?

• tablename_id

ryanflach

Discover Weekly: Machine Learning in Music Curation

What is Discover Weekly

• Weekly curated playlist of 30 songs
• Automatically generated and delivered to all Spotify users
• Free and incredibly popular

What is Machine Learning

• "Machine learning is the idea that there are generic algorithms that can tell you something interesting about a set of data without you having to write any custom code specific to the problem. Instead of writing code, you feed data to the generic algorithm and it builds its own logic based on the data." - Machine Learning is Fun

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1. rails new <project_name> -d postgresql --skip-turbolinks --skip-spring -T

• -d postgresql sets up the project to use PostgreSQL
• --skip-turbolinks & --skip-spring creates a project that does not use turbolinks or spring
• -T skips the creation of the test directory and use of Test::Unit

2. In the Gemfile:

• Available to all environments:
  • gem 'figaro' - store environment variables securely across your app (docs)
  • Uncomment gem 'bcrypt', '~> 3.1.7' if you will be hosting your own user accounts with passwords (docs)
• Inside of group :test:
  • gem 'rspec-rails' - user rspec in place of minitest (docs)

ryanflach

What are you looking for in your first job?

• In my first position I'd like to work with individuals and a company whose mission I identify with and find meaning in. I would prefer a product that individuals can benefit from. In work environment, I would prefer an organization that provides mentorship and growth opportunities for junior developers, allowing me to continue my learning while also providing me opportunities and challenges to be an active, contributing team member.

What are your top 3 priorities in your first job?

1. Supportive environment for junior developers
2. Work/life balance
3. Location

What are some barriers you identified, as well as what you could do to mitigate these barriers?

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1. What is ES6?

• Officially ECMAScript 6, it is the most recent build of syntax for JavaScript (ECMAScript is the 'proper' name for JavaScript).

2. What is Transpilation and how does it relate to ES6?

• A source-to-source compiler. With regard to ES6, a tool like Babel would allow you to write in ES6 and have the code compiled to ES5, for environments where ES6 might not yet be supported.

3. Looking at the ES6 features link below, discuss one update from ES5 and if it seems useful/superfluous.

• I had seen the new 'arrow' syntax but didn't have an understanding of it. In short, it is shorthand for function and is of particular use when a single-line function is being called. From the examples found here:

var bar = foo.map(function(x) { return x.length; });

becomes: