Recently, I was spinning up an extremely simple Rails 4 project, which was to serve as a portal to several other applications deployed on the same Jetty instance. This was not my first JRuby on Rails rodeo, so I was expecting a smooth deployment.
When I deployed the WAR into a Jetty instance on my local machine, neither the CSS nor images were being served correctly. The application server was giving me a 200 return code with the correct content length header, and then giving me a zero-byte response. Having never encountered this issue before, I talked to my pair on the project, who was standing up a separate Rails 4 app for the same application server. He was seeing it too. We compared notes. Heads were scratched. Read more on JRuby, Rails, and Jetty – Where Are my Assets?…
I tend to pick up new programming languages like a crow picks up shiny objects, so when I found out that Swift was to support type inference, Option types, Sum types, a real REPL, and nice lambda syntax, I had to check it out further.
Read more on First Impressions of Swift…
Posted in iOS / OS X Tagged swift
While digging around in the Ember.js API docs, I encountered a mention of a computed property syntax that I hadn’t seen before. Quoth the docs for the computed.empty alias:
Note: When using Ember.computed.empty to watch an array make sure to use the array. syntax so the computed can subscribe to transitions from empty to non-empty states.
This sounded intriguing, but wasn’t actually very instructive. A quick ask around the office revealed that no one else had encountered this syntax before either. The quest for knowledge was on.
Read more on Ember.js array. syntax…
We’re using Pivotal Tracker to manage the backlog on my current project. I initially really appreciated the simplicity of the way Tracker presents stories just by their human-readable name. But as the project progressed, there came a point where there were so many stories that it started to become difficult to find stories quickly.
One of the clients made a mention in passing about how they wished they had a short story ID like they had seen in previous projects. Having previously worked with JIRA’s project-unique issue-ID system, I realized how much easier it would be to make quick reference to existing stories, and started looking for a solution. Read more on Increasing Pivotal Tracker Usability with Shorter IDs…
When I started working on my first embedded project at Atomic, I was given just two pieces of advice regarding C programming:
- Read the K&R C book.
- Turn to the C technical standard for language questions.
The second one struck me as an odd proposition at the time, as I had never before cracked open a language spec.
My impression of language specifications and formal documents in general was that they were for a chosen few, and not generally useful day-to-day. This turns out to be almost completely untrue. Since the standards documents lay out the rules which the people implementing the standard must follow, they often provide one of the very best references for how things behave in the real world. They also must be clear enough to follow, and detail the corner cases that introductory blog posts always seem to leave out.
Surely enough, I quickly found myself skimming through the C99 specs for everything from finding out what the ‘register’ keyword actually does (hint: nothing to do with register allocation) to the exact behavior of designated initializers for structs. The spec isn’t always the clearest, and takes some time to read, but importantly it’s almost always right. Read more on Don’t Fear the Standards – They’re There for a Reason…
I recently found myself needing to make a really thorough system image of my MacBook when my Mac OS install picked up some subtle corruption that was causing some really crazy suspend/resume bugs. I chose to make full system images with SuperDuper!, since it has proven itself quite capable in these matters in the past.
I already had Netatalk set up on my trusty personal file server, so I set up a gigabit ethernet connection with jumbo packets, mounted an AFP share on my mac, and started a backup to a new sparse bundle. “Slow” does not even begin to describe for how painfully sluggish the speeds reported by SuperDuper! were, at less than 8MB/sec. Over 18 hours were estimated to complete the backup. Since I need to work on my laptop at least 8 hours a day, this was unacceptable. Thankfully, I found a faster way. Read more on Faster MacOS Drive Images with SuperDuper, SSHFS, and Netcat…
This post is not about any of those programming languages. This post is about more esoteric languages — ones that I will never use for practical purposes.
These are languages that exist not to get work done, but to have fun. If you ask yourself “Why?” you are probably missing the point. The question is more often, “Why Not?” Read more on A Primer on Esoteric Programming Languages…
Ember.js can be an extremely polarizing framework. If the stars align, you can accomplish astonishing volumes of work in a short period. When you start exploring the boundaries of what’s known practice, sometimes you can get buried under a mountain of yaks that need shaving.
The application I’m currently working on has quite a few form pages. This has lead me to look some of the tougher problems in Ember like radio boxes and modal dialogs. While I’ve had exceptionally poor luck trying to get radio buttons working properly and am not unsatisfied with my current solution for modals, I had a really awesome experience adding a calendar date-picker widget with Ember.
Read more on Ember.js Date Pickers – It’s Easy!…
Posted in Ember.js Tagged emberjs
Ember.js is an intriguing framework, but I have occasionally been frustrated trying to find the proper way to accomplish a task. With Ember.js evolving at such a rapid pace, it’s not uncommon for information written only months ago to be completely out of date. To that end, I’ve assembled some of the more helpful sources of information I’ve discovered.
- Ember Homepage
- Contains definitively up-to-date information about the API and at least some basic guidance about how it should be used in the Guides.
Read more on Resources for Getting Started with Ember.js…
Posted in Ember.js Tagged emberjs