Add Forward All Arguments To Another Method as a Ruby TIL

ruby/forward-all-arguments-to-another-method.md

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+# Forward All Arguments To Another Method
+
+There are three types of arguments that a Ruby method can receive. Positional
+arguments, keyword arguments, and a block argument.
+
+A method that deals with all three might be defined like this:
+
+```ruby
+def forwarding_method(*args, **kwargs, &block)
+  # implementation
+end
+```
+
+Now lets say we have some concrete method that we want to forward these
+arguments to:
+
+```ruby
+def concrete_method(*args, **kwargs)
+  x = args.first || 1
+  key, y = kwargs.first || [:a, 2]
+
+  puts "Dealing with #{x} and key #{key}: #{y}"
+
+  yield(x, y)
+end
+```
+
+We could forward arguments the longhand way like this:
+
+```ruby
+def forwarding_method(*args, **kwargs, &block)
+  concrete_method(*args, **kwargs, &block)
+end
+```
+
+However, since Ruby 2.7 we have access to a shorthand "triple-dot" syntax for
+forwarding all arguments.
+
+```ruby
+def forwarding_method(...)
+  concrete_method(...)
+end
+```
+
+[source](https://ruby-doc.org/3.3.6/syntax/methods_rdoc.html#label-Argument+Forwarding)