OpenSSL issues building Ruby 2.2.2 with ruby-install

Trying out chruby and ruby-install and installing Ruby 2.2.2 with ruby-install was giving be the error:

Setting the LDFLAGS env var solved this for me:


Alacritty Dracula Theme

Trying out Alacritty and can’t live without the Dracula theme. So here it is. Just added it to your alacritty.yml


Stupid coding mistakes

Made a really annoying mistake today while writing some code to delete data out of Redis.

The mistake was in the final method keep_keys. Every check to see if a key should be rejected I was adding an element to the flattened_keys array over and over again, causing my deletion to slow down over time. A simple change to memoize the keep keys made the process go from never finishing to, completing in a few seconds.

Clearer text in iTerm

For a while, and since moving to a 4k monitor, text has always looked a bit fuzzy when using iTerm. I just discovered that setting thin strokes to always be on has made a huge difference in the crispness of text.

Books of 2015

This year’s standout books were “The Dark Forest” which was the follow on from last year’s “The Three-Body Problem” and “I am Pilgrim”. “Brain Maker” was a real eye opener into the workings of the gut biome. Sadly most other books didn’t really grab me. I’ve also started keeping a track of books I ended up skimming through.

  • The Tiger that Isn’t (4/1/15 – Statistics)
  • It’s not all about me (24/1/15 – Psychology)
  • Just Fucking Ship (28/1/15 – Business)
  • Story of Your Life and Others (5/2/15 – Fiction)
  • Traction (10/2/15 – Business – Skimmed last 40%)
  • The Mom Test (22/2/15 – Business)
  • Stop Reading Self-Help Books (24/2/15 – Self-Help)
  • The Shell Collector (27/2/15 – Fiction)
  • JFDI (1/3/15 – Self-Help/Business)
  • Smartcuts – Audiobook (10/3/15 – Business)
  • Effective Javascript (Skimmed ~60%) (19/4/3015 – Computing)
  • Servers for Hackers (Skimmed ~ 90%) (20/4/2015 – Computing)
  • How Adam Smith Can Change Your Life (29/4/15 – Life)
  • Better than Before – Audiobook (15/5/15 – Psychology)
  • I Am Pilgrim (19/5/15 – Fiction)
  • The Zen Programmer (10/6/15 – Life)
  • Nikon D610 Experience (22/6/15 – Photography)
  • 31 Days to Overcome Your Fear of Shooting Street Photography (23/6/15)
  • How to Shoot Street Portraits (28/6/15 – Photography)
  • Adobe Lightroom 6 Training (28/6/15 – Photography)
  • The Flash Photography Field Guide (Skimmed ~50%) (2/7/15 – Photography)
  • The Street Photography Composition Manual (4/7/15 – Photography)
  • SEO 2016 (15/7/2015 – SEO)
  • Growing Rails Applications in Practice (17/7/2015 – Technology)
  • Make Love not Porn (3/8/2015 – Psychology)
  • Brain Maker (23/8/2015 – Health)
  • The Dark Forest (7/9/2015 – Fiction)
  • Total Recall (15/10/2015 – Autobiography)
  • Meta programming Ruby (21/11/2015)
  • No More Mr. Nice Guy (9/12/2015 – Self-help)
  • Redis in Action (Skimmed ~40%) (19/12/2015 – Technology)
  • Can you go? (18/12/2015 – Training)

Generating product recommendations in Spree using the Jaccard Index

Being able to recommend products to shoppers is a vital part of any online store. The “Customers Who Bought This Item Also Bought” section can lead to a lot of extra sales if done well. The Jaccard Index is a way of measuring similarity between items. Using some custom SQL we can extract the values we need:

With these values we can then calculate the affinity between sold products:


Generate a random email address in TextExpander with Applescript

Since my last post about generating random email addresses in TextExpander, I’ve move from using Ruby to Applescript to do so. Here is my script which essentially does the same thing.


From West to East

More and more people in the Philippines are trying to live like people in the West. I was surprised to see a lot of people taking up hobbies such as jogging and cycling as well as something I had never seen there before, people walking their dogs. The main things I was aware of though was the shift towards a more Western diet.

Ever since I was young my height meant I stuck out when we would go home to the Philippines, but while there last year (2014) many of the younger generation were very close to my own height. Surprisingly a lot were very fat, if not obese too. There have always been fat people in the Philippines, but it is definitely one step up the scale now. In all the times I have been there previously I don’t think I have ever seen an obese Filipino, but this time I saw quite a few. I can only guess this is down to shifting diet habits.

People are eating a lot more processed foods there now as opposed to home cooked meals. Whether that is the real reason or not for these changes, I cannot say.  Whatever it is though, is not for the good. It makes me think of the great phrase “Overfed and under-nourished”. Already the ailments such as obesity are apparent, and only time will tell if more western health problems arise as well.