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Posted by Dmytro Shteflyuk on under Ruby & Rails (4,152 views)
Sometimes we need to write small console scripts which do some background processing on our models. In Scribd we are using Loops to run these tasks (check Alexey Kovyrin’s introduction post). One of our scripts supposed to generate some sort of html reports, and we need to generate links to our site there.
Posted by Dmytro Shteflyuk on under Ruby & Rails (7,003 views)
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 (3,751 views)
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 (5,667 views)
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 · 
(7,305 views)
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.