This is part 15 of Categories for Programmers. Previously: Representable Functors. See the Table of Contents. Most constructions in category theory are generalizations of results from other more sp…
The long, honest story of how I taught myself web development and turned it into a career.
A while ago a friend of mine asked me how I would go about building a ‘People Who Like This Also Like …’ feature for a music startup he was working at. For each band or musician, he wanted to display a list of other artists that people might also be interested in.
This is a quick Friday blog post to talk about a recent experience I had working on a piece Juju code that needed to capture the data being sent over a net.Conn .
In this tutorial we’ll be using py2app to create a standalone OSX application from a Python 2 or 3 source code with a simple Tkinter user interface. "py2app is a Python setuptools command which will allow you to make standalone application bundles and plugins from Python scripts. py2app is similar in purpose and…
So yesterday I saw someone ask about how many times the variable m gets evaluated in the following Haskell snippet:
Closures in Rust are powerful and flexible, building on traits, generics and ownership.
Go is decidedly polarizing. While many are touting their transition to Go, it has become equally fashionable to criticize and mock the language. As Bjarne Stroustrup so eloquently put it, “There are only two kinds of programming languages: those people always bitch about and those nobody uses.” This adage couldn’t be…
Thoughts about programming, mostly
I’m Chris McCord, a programmer with a passion for science and building things. I spend my time crafting the Phoenix Framework, working with …
Robert O'Callahan. Christian. Kiwi. Software guy. All content human-authored unless otherwise noted.
Here's a usability feature for the web: disable double-clicks on links and form submits. Before you think I'm a complete idiot, allow me to talk some sense into …
Given a string, get a truncated string of length up to 12. The task is ambiguous, as it doesn't say anything about whether or not 12 shou...
Tagged pointers are an interesting technology used to increase performance and reduce memory usage. As of OS X 10.10, NSString got the tagged pointer treatment, and today I'm going to take a look at how it works, a topic suggested by Ken Ferry.
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Introduction A Markov Chain is a set of transitions from one state to the next; Such that the transition from the current state to the next depends only on the current state, the previous and future states do not effect the probability of the transition. A transitions independence from future and past sates is called…
The above is the Hello World program for Java, arguably one of the most popular programming languages. Encapsulated in the above three lines are several different concepts ranging from static functions to return types to stdout and to the entirety of object oriented programming in general.
Yesterday, I was looking for some help trying to have a clean way to roll back database transactions at the end of a test in a Python TestC...
