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Scottish Ruby User Group


The Scottish Ruby User Group is a collection of people who are linked with Scotland and have an interest in Ruby and Ruby on Rails. We meet every month in Edinburgh for presentations from members and guests, and a chat about Ruby and related subjects. All are welcome, and there are no subscriptions or costs involved.

Meetings are announced in advance on the mailing list, Meetup, and Open Tech Calendar, and follow our code of conduct.

Meeting up

We currently meet online on the second Thursday of the month at 18:00. Currently we’re experimenting with the most appropriate video conferencing solution. Links will be posted the day before if you’re signed up on Meetup.

Mailing List

You can browse and subscribe to the list using the ScotRUG Google Group information page. The list is for announcements of activities and general Ruby support and discussion; feel free to post any questions you may have.


We have a Freenode channel #scotrug, though it’s quite quiet. There’s also the Gitter channel around the ScotRUG github repository. It is also quiet.

Code of Conduct

To ensure we provide a welcoming and friendly environment for all, attendees, speakers, organisers, and volunteers at any ScotRUG meetup are required to conform to our code of conduct.

Organizers will enforce this code throughout the meetup and meetup-related social events.


Videos of previous presentations have been provided courtesy of Cultivate.

Truffle Ruby - What Is It, How Do You Start With It?

posted 01 Nov 2020

Where and When?

On the 12th November (the second Thursday of the month), we’ll be meeting online, as per 2020 protocols. We’ll start the meeting at 18:00. The link will be sent out on Wednesday via our Meetup page. So, sign up there!


It’s been a few months since Scotland based or Scotland adjacent Rubyists got together to chat. It’s been a weird year aye? As the nights draw in, Samhain passes and we brace for the cold weather to come, it’s time to gather around again, have a blether and dig into some Ruby.

This month Duncan MacGregor is going to speak to us about Truffle Ruby. As with other interpreted languages, there are a number of options for a runtime to get your Ruby code to do something. The big one is CRuby, previously known as MRI or Matz’ Ruby intepretor. There’s also JRuby, the limited set of mruby, the fun of Ruby written in Ruby from Rubinius, the once and not forgotten Ruby Enterprise Edition and Maglev Ruby. Truffle is the newest of these, with a focus on high performance. Knowing what’s available means you can choose the most appropriate interpreter for the job you’re trying to get done, and each different interpreter also helps explore new areas for the other, pushing the state of the art forward.

It should enlightening, and we’ll leave plenty of time for questions. See you all there!

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