Setting Up Golang Like a Rubyist

Getting into the Go Programming Language

I use Ruby in my day job, but recently I’ve been dabbling with Go. The install docs give you an easy way to setup if you’re on Linux:

export PATH=$PATH:/usr/local/go/bin

But I’m used to RVM and other environment managers – where is the RVM for Go?

Using the Ruby ecosystem can kind of spoil you a bit as a developer as I’ve found while exploring Go. The tooling is easy to use and setup. I’ve gotten used to the workflow of creating gemsets specifically for particular applications (or using bundler if you prefer) and being able to switch from one to the other using a command line tool like rvm. I rarely have to think about exporting PATH variables.

Fortunately, there is GVM

Step 1 – Install GVM

There are some pretty clear instructions the GVM README which will let you install GVM.

Step 2 – Create a pkgset (similar to a gemset in rvm)

$ gvm pkgset awesomecode

Step 3 – Edit GOPATH and PATH environment variables

In your terminal type:

$ gvm pkgenv awesomecode

This will open something like the below configuration file in your favorite editor specified by the environment variable: $EDITOR. You can also navigate directly to it where you installed your .gvm folder. In my case, it was at $HOME/.gvm/environments and was called go1.4@awesomecode.

# export GOPATH; GOPATH="/home/bruce/.gvm/pkgsets/go1.4/awesomecode:$GOPATH"
export GOPATH; GOPATH="/home/bruce/.gvm/pkgsets/go1.4/awesomecode:$HOME/Documents/github_code/awesomecode/go:$GOPATH"
# export PATH; PATH="/home/bruce/.gvm/pkgsets/go1.4/awesomecode/bin:${GVM_OVERLAY_PREFIX}/bin:${PATH}"
export PATH; PATH="/home/bruce/.gvm/pkgsets/go1.4/awesomecode/bin:${GVM_OVERLAY_PREFIX}/bin:$HOME/Documents/github_code/awesomecode/go/bin:${PATH}"

Step 4 – Other Notes

The other thing I’m learning is that running go requires a very specific directory structure. In the /awesomecode/go directory, I had to create pkg, src, and bin directories in addition to the main directory that housed my hello_world.go file.


I stole shamelessly from this post by vastbinderj. I’m writing this to document this so I don’t forget. Thanks open source!

My Year of Software – A Review of 2014

Ten software lessons in 2014

Lesson 1 – Building a Rails API

In 2014, I built a backedn Rails 4.2 API using the rocket_pants gem and used another Rails application to view the API data. I learned to watch how many objects I was creating and how important it was to use performance monitoring tools like New Relic to ensure I was hitting ~200 millisecond response times to ensure a great user experience.

Lesson 2 – Vimgolf is great for teaching yourself vim one day at a time

I’ve been playing Vimgolf and learning a few vim tricks such as using gg to jump to the top of the file and Shift+G to jump to the bottom of the file.

Lesson 3 – Blogging is good for self-documenting

Blogging has been quite useful for documenting all the little tricks I’ve been using in my Rails applications, from testing elasticsearch with RSpec to saving nested attribute checkboxes with the cocoon gem.

Lesson 4 – You really learn by shipping applications that get used in production

Once you start getting customers telling you what’s broken and what can be improved, you get a bird’s eye view of not only how well you and the customer both understood the requirements and their translation into working software.

If you’ve been writing unmaintainable code, you’ll also experience the pain of trying to add new features quickly.

Lesson 5 – Portfolio applications (non-production) are great for testing new concepts

Portfolio applications are great for testing new ideas, but if they’re not being stress tested by actual users, you don’t get to the joy of writing performant code.

Lesson 6 – Sometimes big companies won’t take the risk of trying “new” technology

It could be because of tight deadlines or other developers aren’t comfortable with the latest stuff coming out. In that case, if you want to do it, hopefully you can find a good business case for it.

Lesson 7 – The only way to learn is to try

I really jumped into my first Rails application without knowing things like metaprogramming, SQL, and Vim. When I look back at how little I knew, I am sometimes amazed that anything got shipped! :)

Lesson 8 – The more I keep learning the more I realize how ignorant I am

When I look at what I consider are great programmers (Yehuda Katz, David Heinemeier Hansson, John Resig, and the list goes on…), I realize how little I know.

Lesson 9 – Logging is your best friend to ensure important data is not lost

Due to a tight shipping schedule, some controller parameter values were not being saved but I never realized it until the end user noticed it. Fortunately, we had been logging things with Papertrail, and so I was able to backfill the data.

Lesson 10 – Test Driven Development is your friend

Maybe experienced programmers like DHH (David H. Hansson) can get away without testing, but as I experienced in Lesson 9, a little testing would have ensured I didn’t have to manually backfill logged data into my Rails application database.

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