Method chaining and lazy evaluation in Ruby

Method chaining and lazy evaluation in Ruby

Method chaining is a convenient way to build up complex queries, which are then lazily executed w...概要を表示 Method chaining is a convenient way to build up complex queries, which are then lazily executed when needed. Within the chain, a single object is updated and passed from one method to the next, until it’s finally transformed into its output value. Object-relational mappers like Rails’ ActiveRecord use method chaining in their query interfaces to build up a database query by accepting multiple find

• ruby
• mongodb