Programming Ruby 3.3

Calling Methods Dynamically

The Object#send method lets you tell any object to invoke a method by name. The first argument is a symbol or a string representing the name, and any remaining arguments are passed along to the method of that name. Let’s have a look at the following code:

"John Coltrane".send(:length)          # => 13
"Miles Davis".send("sub", /iles/, '.') # => "M. Davis"

There are two twists to send. First, your class might define its own send method if it wanted to send something somewhere. Ruby provides the __send__ method, defined in BasicObject, which is identical to send and is meant to be used in cases where send might have been overwritten .

Second, the send method doesn’t enforce method access, meaning that ...