Blog

Abstraction and remote controls

November 18, 20193 min read

Using a remote control for your TV is an abstraction. You push a button and a thing happens. And you only have a few buttons to choose from.

Encapsulation and horses

November 16, 20192 min read

The first principle of object-oriented programming is encapsulation. Encapsulation is when you "hide" an object's state from other objects.

Trees and Harry Potter's Triwizard tournament

November 15, 20196 min read

If you're a big Harry Potter fan, you probably enjoyed the Triwizard Maze. When racing through the maze, the competitors were faced with decisions about which path to take. Modeling these choices can be done using a tree data structure.

Queues and lunch lines

November 05, 20193 min read

Waiting in a line—or as the British call it, “queueing”—is a literal visualization of a queue data structure. The first person in line is the first person who gets whatever they’re waiting for and leaves the line.

Stacks and PEZ dispensers

November 03, 20193 min read

When you fill a PEZ dispenser, you push the candy from the top down. When you eat the candy, you pop a piece off the top of the literal stack of pieces. A stack data structure behaves the same way.

Step-by-step guide to create fair and representative code challenges

October 30, 20199 min read

Code challenges should be representative of the work a candidate will do for the role they are applying for. Rewriting code challenges to fit a role is a lot of work, but here's a step by step guide to simplify it.

6 strategies to become a faster debugger

October 28, 20195 min read

Developers spend between 50% and 75% of their coding time debugging. Becoming a faster debugger would free up a lot of time for more challenging problems. Here are 6 strategies for speeding up your debugging time.

Linked lists and scavenger hunts

October 26, 20195 min read

A scavenger hunt is a physical representation of a linked list. A linked list is a data structure characterized by sequential data access and no random access.

Recursion and Russian nesting dolls

October 25, 20194 min read

Recursion has a reputation in computer science of being intimidating but what is it exactly? Russian nesting dolls are a great metaphor for recursion so let's use them as an example to break it down in an easy-to-understand way.

Our first 1:1 agenda

October 20, 20197 min read

Intentional relationship building is an important part of being a successful manager. You support people achieving their goals and pushing their career forward. The first 1:1 with a new report is a great time to be intentional and set the tone for your relationship.