The blog ofJonathan Pepin

Closures and Callbacks in Javascript

2017-01-10

A normal function Let's declare the function: javascript var add = function(x, y) { return x + y; }; Now, we can call the function using the variable add javascript > add(2, 3) > 5 If we...

Building Stable Systems

2016-11-12

It is impossible to build a system that is 100% stable, available and bug free. Humans will make mistakes. Machines will break. The internet will go offline. Sometimes you will break things that are under your control, and some other...

From Leader-Follower to Leader-Leader

2016-10-25

I recently read Turn The Ship Around (https://www.amazon.com/Turn-Ship-Around-Turning-Followers/dp/1591846404/ref=sr_1_1?ie=UTF8&qid=1477376801&sr=8-1&keywords=turn+the+ship+around), an incredible book about how to give your team control instead of taking it, and creating leaders instead of followers. Here are my notes. ## What it's all about The main idea is...

What it means to be fierce

2016-08-23

At Uber, one of the most important values we always push and that took a big part in making Uber as successful as it is today, is being fierce. Being fierce is very important for teams to work together, move...

Jocelyn Goldfein- Eng Career Advice

2015-02-26

How career growth works for engineers This is not about becoming more expensive (higher salary) but becoming more valuable (having more impact) You are responsible for your own career growth. Going from engineer level 1 to Senior may come...

Notes on how to be an Influencer

2014-11-30

Common sets of principles and skills that help create quick, profound, and lasting change. What qualifies 'leaders' is their capacity to influence others to change their behaviors in order to achieve important results. It is not persuasion. ## 3 keys...

Data Structures- Linked List

2014-01-11

A linked list is a data structure in which elements are arranged in linear order (like an array). But unlike an array, where the order is determined by the index of each element in it, the order in a Linked...

Server-generated Javascript Responses

2013-12-21

DHH wrote an article (https://37signals.com/svn/posts/3697-server-generated-javascript-responses) on Signal vs Noice on Server-generated Javascript Responses, which reminded of how to write good and unobstructive javascript in Rails. I'm not gonna lie, it's exactly what I learnt at DevBootcamp, but I feel like I...

Big-O - Algorithms' Time Complexity

2013-09-07

One of the most important thing to think about when developping an algorithm is its time complexity. Or, in other words, how long this algorithm will take to run, depending on the size of the data. When analysing an algorithm's...

"Google's Software Development Best Practices"

2013-08-10

The famous monorepo Most of Google's source code is hosted into a single repository, accessible to all software engineers. Only 3 main exceptions: Chrome and Android have their own open sourced repo, and a few high-value or security-critical pieces...