Mate Solymosi questions

Mate Solymosi answers

• Find key of value within array in hash
• Singleton class of singleton class of BasicObject in Ruby
• How do you make a rails multi select dropdown work
• What does `&method(:method_ name)` mean in ruby?
• self.included – including class methods from a module in Ruby
• Is it more secure to use a session variable instead of a hidden input field?
• How can an inherited controller add to parent's before_action conditions
• How can I use fetch in while loop
• Express.js/Typescript: Error TS2339: Property 'send' does not exist on type 'Response'
• Validation of objects inside array of jsonb objects with RubyOnRails