Rails Ruby difference between collect and map This is common question for Ruby on Rails developer(Beginner). Map and Collect both are looping methods used on Array, Hash etc. This tutorial will help understanding the exact difference between these two methods.
Rails RVM basic commands rvm install, rvm uninstall, rvm use, rvm list, rvm upgrade, rvm get stable, rvm gemset like commands will be illustrated.
Rails can’t find the ‘libpq-fe.h header *** extconf.rb failed *** can’t find the ‘libpq-fe.h header *\* extconf.rb failed **, you may find this when you get error installing pg gem in your ruby environment.
Rails Ruby Count vs Length vs Size These methods are used on Arrays, Hashes or Objects. This tutorial will illustrate difference between count length and size.
Rails Rails RecordNotFound Exception Handling Rails RecordNotFound exception occurs when there is error while fetching records from database. RecordNotFound is one of the Exception Handling class provided by Rails.
Subversion SVN command to check modified files While using SVN command line, you may need to see status codes of modified/changes files. In this tutorial we will learn SVN command to check modified files.