During debugging you might pepper your code with lines like these: console.log('foo = ' + foo + ', bar = ' + bar) I recommend to use...

From Rails 3.0.9, there is a method Hash#to_query that will turn a Hash into a query string:

I got this error when running Rails 2.3 tests for Rails LTS. More stacktrace: NoMethodError: undefined method `cache' for Gem...

Using Scenic, you can bring the power of SQL views to your Rails application without having to switch your schema...

Note Maintenance mode is enabled on application server as soon as the file /public/system/maintenance.html is present. Note that the servers...

You login to a Linux server with a performance issue: what do you check in the first minute? uptime

Once Rails knows a given string is html_safe, it will never escape it. However, there may be times when...

PostgreSQL offers a really handy field type: json. You can store any JSON there, in any structure. While its flexibility...

rack-mini-profiler is a powerful Swiss army knife for Rack app performance. Measure SQL queries, memory allocation and CPU...

There are cases when you need to select DOM elements without jQuery, such as: when jQuery is not available

In Ruby 2.3 you can use <<~ instead of <<- to automatically remove indentation from a HEREDOCs: str = <<~MESSAGE Hello Universe!

The nokogiri gem provides different packages for several platforms. Each platform-specific variant ships pre-built binaries of libxml2, e.g...

CSS4 comes with :has. E.g. h1:has(b) would select all tags that contain a tag. This is implemented in...

E-mails are usually encoded using Quoted Printable. Here is how to decode or encode such strings. You probably know...

Regular expressions in Javascript are represented by a RegExp object. There also is a regex literal as in many other...

You know that Devise offers RSpec test helpers for controller specs. However, in request specs, they will not work.

This looks like it is safe to use: 2.2.1 :001 > a = b = "hello world" "hello world" 2.2.1 :002 > a

Cucumber raises a Cucumber::Ambiguous if more than one step definitions match a step. Our new cucumber_priority gem provides...

Ruby has the class Proc which encapsulates a "block of code". There are 2 "flavors" of Procs: Those with "block...

This class contains nerdcore things such as disassembling a piece of Ruby into VM calls or enabling tail-call optimization...

From time to time, RubyMine suddenly did not accept any keyboard input and felt crashed, while mouse interaction was still...

You can use mail-tester.com to check your application's e-mails for issues that might cause e-mails to be...

Ag (aka "the silver searcher") is a very fast replacement for grep. It will parse your .gitignore for additional speedup...