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ECMAScript 6 collections, Part 3: WeakMaps

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Weakmaps are similar to regular maps in that they map a value to a unique key. That key can later be used to retrieve the value it identifies. Weakmaps are different because the key must be an object and cannot be a primitive value. This may seem like a strange constraint but it’s actually the […]

The “thank you” that changed my life

There’s so much rampant negativity in the world and on the Internet that it can be hard to deal with some days. It seems like more and more, I’m seeing people being mean and succeeding, and that makes me sad. Perhaps the biggest poster child for this was Steve Jobs, who by all accounts was […]

Book review: Think Like a Programmer

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I was excited to get a copy of Think Like a Programmer for review. The subtitle is, “an introduction to creative problem solving,” which is something that I think is very important to being a good software engineer. I’ve talked a lot to younger engineers about thinking critically to solve problems and not just relying […]

Does JavaScript need classes?

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Like it or not, ECMAScript 6 is going to have classes[1]. The concept of classes in JavaScript has always been polarizing. There are some who love the classless nature of JavaScript specifically because it is different than other languages. On the other hand, there are those who hate the classless nature of JavaScript because it’s […]

ECMAScript 6 collections, Part 2: Maps

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Maps[1], like sets, are also a familiar topic for those coming from other languages. The basic idea is to map a value to a unique key in such a way that you can retrieve that value at any point in time by using the key. In JavaScript, developers have traditionally used regular objects as maps. […]

Thoughts on TypeScript

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Earlier this week, Microsoft released TypeScript[1], a new compile-to-JavaScript language for “application scale JavaScript.” My initial reaction was confusion: Um, why?… (via @izs) — Nicholas C. Zakas (@slicknet) October 1, 2012 It seems like almost every week there’s a new language that’s trying to replace JavaScript on the web. Google received a lukewarm reception […]

Computer science in JavaScript: Merge sort

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Merge sort is arguably the first useful sorting algorithm you learn in computer science. Merge sort has a complexity of O(n log n), making it one of the more efficient sorting algorithms available. Additionally, merge sort is a stable sort (just like insertion sort) so that the relative order of equivalent items remains the same […]

ECMAScript 6 collections, Part 1: Sets

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For most of JavaScript’s history, there has been only one type of collection represented by the Array type. Arrays are used in JavaScript just like arrays and other languages but pull double and triple duty mimicking queues and stacks as well. Since arrays only use numeric indices, developers had to use objects whenever a non-numeric […]

Computer science in JavaScript: Insertion sort

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Insertion sort is typically the third sorting algorithm taught in computer science programs, after bubble sort[1] and selection sort[2]. Insertion sort has a best-case complexity of O(n), which is less complex than bubble and selection sort at O(n2). This is also the first stable sort algorithm taught. Stable sort algorithms are sorts that don’t change […]

Replacing Apache with nginx on Elastic Beanstalk

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WellFurnished has been using Amazon’s Elastic Beanstalk[1] service for some time now with one of the default configurations. For those who are unaware, Elastic Beanstalk is Amazon’s answer to services like Heroku and Google App Engine. You set up an application and one or more environments made up of a load balancer and any number […]

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