Programming

Signing Git Commits with Your SSH Key

You may already be signing your Git commits with a GPG key, but as of today you can instead choose to sign with your SSH key! Signing in SSH is a relatively new feature that lets you use your private SSH key to sign arbitrary text and others to verify that signature with your public key.

Mixing it up with Mocktail

Mocktail is a new testing library from the lovely folks at Test Double. It seeks to provide a more modern, less intrusive, and friendlier interface for using test doubles.

clamp() for Responsive Design

CSS clamp() provides a method for setting numerical values with a minimum, maximum, and a calculated value between the two. The syntax is calc([min], [calculated], [max]) and it’s useful for times when you want to scale some value based on the size of the screen by using the vw length unit.

Flowing Text Around Images

Magazines, books, and other print layouts sometimes use images that overlap with the text, and have that text wrap around the shape of the image. It can make for an interesting effect, bringing a feeling of motion into a static medium. Done right, the text and image become conceptually closer in the mind of the viewer than having an image off to the side or otherwise positioned around the text. I use this on a [couple] of [posts] to show off artwork that’s related to the content, and I think it makes for a fun effect.

CSS-only Submenu Navigation with Post Tags

Our posts have categories, which I’ve used as a “collection” or “series” of posts that are on related topics. Recently, I’ve been writing up campaign notes for my D&D session as the characters themselves in a category simply called “Campaign Logs”. I’m also hoping to continue to write this...

A Site Reborn

I’ve moved my Jekyll site into a Rails app, and I’ve done just enough work to have every post render without errors and added just enough style to make things readable. Some of the site still looks pretty bad, and none of it looks good yet. But that’s ok, because my plan is to rebuild and...

Come Find Me in the Hallway

As a speaker, you shouldn’t be taking questions on stage after your talk.

Overlay Text on Responsive Images

When putting text over an image, readability can be a concern. By combining the responsive HTML5 <picture> container with some best practices for image overlays, we can achieve a good result.

The Atonement of J. Robert Oppenheimer

I built software to kill people and I gave a talk about it to warn people to think through their choices. Oppenheimer helped design the atomic bomb - was he able to atone?

Jekyll on Heroku

Jekyll, the static website generator written in Ruby and popularized by GitHub, is a great candidate for being run on Heroku.

Need a Slug?

Rails provides its own slug generator, so you may not need another gem.

Don't Get Distracted

I’m going to tell you about how I took a job building software to kill people.

But don’t get distracted by that; I didn’t know at the time.

Salary Social Club

How does your salary compare to others? Is that job offer fair? Does a candidate have reasonable pay expectations? Take the Salary Social Survey and we’ll find out together!

Sorting Rubyists

We’ll visualize the steps for several sorting algorithms not only using pretty visualizations on a slide, but also with people as the objects being sorted. Don’t know what an algorithm is, what performance really means, or what “Big O” means, or what these best-, worst-, and average-case time complexities mean? No problem! We’re going to learn together how computers figure out how to sort sets of numbers. You can expect to come out knowing new things and with Benny Hill stuck in your head.

We’ll visualize several sorting algorithms—but we’ll be sorting the audience! Don’t know what an algorithm is, what performance means, what “Big O” is, or the effect best-, worst-, and average-case time complexities? No problem: we’ll learn together! You can expect to come out knowing new things and with Benny Hill stuck in your head.

Source code for charts, bars, and playing Benny Hill across several slides: https://github.com/calebthompson/sorting-rubyists

Stabby Stubbing

Define a .call() on service objects to stub with Procs.

Advanced Postgres Performance Tips

What do you do when indexes aren’t enough?

Literate Vim

Vim commands are terse and arcane, but very expressive. See a complex command broken down by clause.

Interface With Your Database in Go Tests

Go’s interface provides a way to abstract away things like your database for testing.

What is this PGP Thing, And How Can I Use It?

The need to keep your personal information, sensitive or nonsensitive, secure from prying eyes isn’t new, but recent events have brought it back into the public eye.

In this workshop, we’ll build and upload public keys, explore Git commit signing, and learn to sign others’ PGP keys. If we have time, we’ll exchange key fingerprints and show IDs, then discuss signing and verifying gems.

You’ll need a photo ID and your own computer for this workshop.

PGP and You

Learn not only how to use PGP, but why each step is important and how to make decisions when interacting with PGP.

Use One Field to Store Names or Addresses

Collect names & addresses from users in a single field, not structured forms.

Not Invented Here

Rails is a mixture of design patterns, practices, and magic. In this talk, we’ll explore how Rails embraces ideas from other frameworks and projects.

Active Record was born of Martin Fowler. MVC was the brainchild of Trygve Reenskaug. Rails 3 completely absorbed the Merb project, gaining modularity and extensibility that it previously lacked.

We all learn by standing on the shoulders of giants, even Rails. By understanding the inception of design patterns, we are more likely to be able to create ideas of our own. This helps us to not only grow in our own ability, but to help others improve as well.

How to Accidentally Learn Vim

I have a confession to make: I wasn’t always a Vim user.

Multi-Table Full Text Search with Postgres

Easily searching across an application’s data is a pervasive need. If you are lucky, you can get away with simple sorting or searching on a single column, but it is more likely that you need full text search across multiple models, all from a single search field.

Use RSpec.vim with tmux and Dispatch

Use Dispatch to open new tmux splits to run tests async.

Iceberg Classes

An “Iceberg Class” is loosely defined as a class with more private than public methods, but we will be specifically talking about those classes with only one or two public methods (other than an initializer).

External Posts in Jekyll

If you contribute to more than one blog, you may want to have all of your posts show up in a single stream, even if they aren’t hosted on that same site.

Store Page Titles in I18n

While the <title> element is one of the only required tags in HTML, it is often overlooked by developers and designers alike until the end of the development process.

crontab: temp file must be edited in place

Solution for error crontab: temp file must be edited in place

Sandi Metz’ Four Rules for Developers

Four rules for clean and maintainable code from Sandi Metz

It’s for the Orphans!

I often come across GitHub Pages branches (gh-pages) branches that are simply forks from the master branch of the repository.

5 Useful Tips for a Better Commit Message

You’re already writing decent commit messages. Let’s see if we can level you up to awesome. Other developers, especially you-in-two-weeks and you-from-next-year, will thank you for your forethought and verbosity when they run git blame to see why that conditional is there.

Love Your Eyes

You look at code all day. Make it look nice with Pitch.

How to Write a README

There is a science and an art to writing an effective README for an open source project.

Strong Parameters as Documentation

Besides moving attribute whitelisting to the controller rather than the model, Rails 4’s move to Strong Parameters over attr_accessible provides great documentation about the data with which records are being created.

Stop Counting Hours

An Open Letter To the Management of (Generally) Small Companies with Internal Software Teams