KL-7 questions

KL-7 answers

• I have a Ruby array of objects, how to change this array into multiple arrays based on the property of those objects?
• Substitute character at an index position in Ruby
• Most efficient way to delete a file if it's below a certain size [closed]
• Regex for filename in img src attribute
• preserving state of check_box_tag after form submit validation error
• rails 3.2 rails generate rspec:install... undefined method `delegate_template_exists?' for class `ActionView::Base' (NameError)
• ActiveRecord query
• Generate select tag from validation options with I18N
• Humanize rails select helper
• Git log - How to list all commits that don't start with a specific word