RubySpec - The Standard You Trust
RubySpec is a project to write a complete, executable specification for the Ruby programming language.
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The TCF 2.0 (Tranparency and Consent Framework) standard, and what you should know about it
The Interactive Advertising Bureau (IAB) is a European marketing association which has introduced a standard how advertising can be served to users in line with the General Data Protection Regulation (GDPR). This standard ...
The Exciter - Why You Should Deploy Your Next Application on Ruby 1.9 and a Rant in General
The rubyforge gems model may not be perfect, but damnit people, when there’s a gem update I know that it has actually been tested somewhat and it’s not just whatever random point HEAD happens to be at, at that point in time, by some random Joe who...
Ruby Scripts: Select the Ruby version in the shebang
As Bill Dueber has on his blog, you can call rvm in the shebang to select a Ruby version like this:
#!/usr/bin/env rvm 1.9 do ruby
Standard arguments to do apply, see $> rvm help do.
Ruby constant lookup: The good, the bad and the ugly
In Ruby, classes and modules are called constants. This card explains how Ruby resolves the meaning of a constant.
The good
E. g. in the following example, Array could mean either Foo::Array or simply Array:
class Fo...
Ruby: The YAML safe_load method hides some pitfalls
The Ruby standard lib ships with a YAML Parser called Psych. But serializing and deserializing data seems not as obvious as if you are using JSON.
To safely write and read YAML files you should use Psych#dump (String#to_yaml) and `Psych.safe...
Ruby: Using the pry debugger in projects with older Ruby versions
In case you want to use pry with an older version of Ruby, you can try the following configurations.
Ruby 1.8.7
Your pry version must not be greater than 0.9.10.
gem 'pry', '=0.9.10'
gem 'ruby-debug',...
In Chrome 121+ the now supported spec-compliant scrollbar properties override the non-standard `-webkit-scrollbar-*` styles
Up until Chrome 120, scrollbars could only be styled using the various -webkit-scrollbar-* pseudo elements, e.g. to make the scrollbars have no arrows, be rounded, or with additional margin towards their container.
Starting with [version 121](h...
How to get the hostname of the current machine in Rails or a Ruby script
Use Socket.gethostname. So for a machine whose hostname is "happycat", it will look like this:
>> Socket.gethostname
=> "happycat"
That should work right away for your Rails application. For plain Ruby, you first need to do:
requi...
ActiveRecord::RecordNotFound errors allow you to query the :name and :id of the model that could not be found
ActiveRecord::RecordNotFound errors provide quite meaningful error messages that can provide some insight on application details. Consider the following:
ActiveRecord::RecordNotFound: Couldn't find Organisation::Membership with 'id'=12 [WHE...
The Ruby Object Model
In Ruby (almost) everything is an Object. While this enables a lot of powerful features, this concept might be confusing for developers who have been programming in more static languages, such as Java or C#. This card should help understanding t...