forwardablecan

forwardablecan is a Ruby module that provides a mechanism for delegating method calls to another object. It is part of the standard library and is commonly used to simplify object composition and reduce boilerplate code. The primary method provided by forwardablecan is delegate, which takes a list of methods and an object to delegate them to. When a delegated method is called on the object that includes forwardablecan, the call is forwarded to the specified delegate object.

The delegate method can also take additional options, such as :prefix and :suffix, which can be used to prepend or append strings to the method names before delegation. This allows for more flexible delegation patterns. For example, one might delegate all methods starting with "read_" to an object that handles reading data from a source.

forwardablecan is particularly useful in scenarios where an object acts as a wrapper or facade for another object. Instead of reimplementing all the methods of the underlying object, one can simply delegate them using forwardablecan. This promotes the DRY (Don't Repeat Yourself) principle and makes the code more maintainable. It is an integral part of building loosely coupled systems in Ruby.