Learning Log: August

Week ending 9/1/2017

Goals (8/25):

• Get another PR into Blueprint (e.g. #1409 )
• Understand how Blueprint simulates click, keyboard, and react prop/state change events with Phantom JS.
• Understand reselect, mapStateToProps, mapDispatchToProps, connect, and anything else that comes up from work.
• Review how CSS works and how to cleanly decompose less.

Readings:

• https://facebook.github.io/react/docs/refs-and-the-dom.html
• https://github.com/reactjs/reselect

Retrospective:

• Enzyme is a React test mock framework.

Week ending 8/25/2017

Goals (8/21):

• Understand basic testing frameworks whatever Blueprint uses
• Understand basic gulp with yarn
• Work on Blueprint's datepicker or dnd
• Write a post on CORs

Backlog:

• Fix up the rate-limiter library
• Help out with side projects

Retrospective (8/25)

Goals were a bit too aggressive. Ramping up on a new team + extra stuff is a bit rough during the week. I will probably try to substitute DB reading group for Blueprint hack night.

Achieved:

• Merged 1 PR into Blueprint.
• Learned a bit about karma, chai, phantom, and some basics about Webpack.
• Reading group discussion about Spanner.

Things to review from work:

• React/Redux createSelector

If the Redux state tree is mutated in a way that causes the value of an input-selector to change, the selector will call its transform function with the values of the input-selectors as arguments and return the result. If the values of the input-selectors are the same as the previous call to the selector, it will return the previously computed value instead of calling the transform function.

• PureComponents vs ConnectedComponents in react / redux
• Docker

docker stop $(docker ps -a -q)
docker rm $(docker ps -a -q)

• CSS (less) selector specificity and flexbox

Unexpected surprises:

• Some good interview questions to think about: Skyline builder, integer translation, validate BST.

Week ending 8/14/2017

A few things that I got better at this past week:

• Basic JS
• ES6 features
• Regex
• Promises / Bluebird
• Making babel work
• Mocha and basic JS testing

A few things to pick up on:

• lodash and extra language features

A few things to study:

• Webpack
• Front-end testing / Selenium
• Front-end UI testing / Storybook
• Immutables

Interesting things to work on

• Write a rate limit decorator library.
• Write a polling with exponential backoff library.