A recent school project got us excited to explore the idea of mapping the trees of city of Vancouver in a more practical way. My friends and I had a fruitful meeting today with @daeaves who has extensive information and experience in this subject. There is a tree mapping platform, OpenTreeMap, to start with. It…
Sorting I’ve been trying to sort a mixed array in Ruby the shortest way. Each element of the array by itself is a mixed array of a number and and a hash: a = [ [0, {:a=>”31″, :b=>”21″}], [1, {:a=>”32″, :b=>”11″}], [1, {:a=>”25″, :b=>”19″}], [0, {:a=>”12″, :b=>”10″}] ] #sort by first item of each row (number) a.sort{|x,y|…
Conclusion first! Let me save you a few minutes (and perhaps hours of suffering on your Mac) and tell you the end of the story in the beginning. Upgrading has been always a tricky way of installing a new operating system. Granted it is smooth enough on a Mac but it comes with its own…
In my journey to hopefully master Ruby on Rails, I’m amazed to see that many authors (in blogs or in books) most of whom are pretty expert in the field, choose to exit the Rails console completely (using CTRL+D) when they need to restart the environment (to clear up the objects in the memory, for…
A recent opportunity made me dust off my development skills and I decided to use Ruby on Rails as the framework of choice. I’m happy with Ruby 1.8.7 for now (comes with Mac OS X Snow Leopard), but I had to update Rails to version 3, which was a painless process. After installing MySQL 5.5.10…