Dmytro Shteflyuk's Home
thoughts about programming
Posted by Dmytro Shteflyuk on under Ruby & Rails
Today my friend asked me to help him with an unexpected behavior of Ruby’s Hash.uniq method. Here is an example:
1 2 3 4 5 6 | [{"id"=>667824693}, {"id"=>667824693}].uniq # => [{"id"=>667824693}, {"id"=>667824693}] [{"id"=>66782469}, {"id"=>66782469}].uniq # => [{"id"=>66782469}] [{"id"=>6678246931}, {"id"=>6678246931}].uniq # => [{"id"=>6678246931}] |
Posted by Dmytro Shteflyuk on under Ruby & Rails
The power of Ruby is not only in its flexibility. It allows to create easy to maintain reusable parts of software, and also provides a way to redistribute them and integrate with your applications — RubyGems system. The only thing that could hurt developer’s brain is managing installed gems. When you are updating already installed gem, previous version will stay in gems folder and will be available to use. But why do you need all these obsolete libraries? There is a command to cleanup stale libraries in RubyGems — gem cleanup.
Posted by Dmytro Shteflyuk on under Ruby & Rails
One of the most used features in any programming language is a Hash. Today we are going to talk about some of the Ruby’s Hash features, which are well documented, but rarely used — parameters of the Hash constructor. In the second part of this article we will take a look at the arguments of the Array class’ constructor.
Posted by Dmytro Shteflyuk on under Ruby & Rails
I have not posted anything here for a long time. It’s hard to start blogging again, so I will write a short tips and tricks series called “Memo“. Today I’m going to talk about two Ruby gems I’m using in all my Ruby on Rails project: mysql and memcached. Every time I try to install or update those gems on Mac OS X following error occurs:
1 2 3 | Building native extensions. This could take a while... ERROR: Error installing mysql: ERROR: Failed to build gem native extension. |
And then I’m googling on how to install these gems. It’s time simplify my life and post commands here.
Posted by Dmytro Shteflyuk on under Ruby & Rails
I have a good news: Sphinx Client API has been updated and now it supports all brand new features of the unstable Sphinx 0.9.8 development snapshot. What does it mean for you as a developer? What features you will get if you would decide to switch to the new version? I will describe most valuable improvements of the Sphinx in this article, and will show how to use them with new Sphinx Client API 0.4.0 r909.