Sending a Message

So far, we've seen the standard way to send a message to Ruby objects using the dot (.) notation. Another way to send a message to a Ruby object is through the send method, as shown in the following code:

array = [1,2,3]
array.length # standard way of sending a message to an object
array.send(:length) # using the send method
array.send("length") # You can send a symbol or a string

send also supports passing arguments to methods:

array.send(:last, 2)

send will pass the positional arguments to the method in the same order that the method defines them. In other words, the second argument to send is really the first argument to the method that is actually being called. The third argument to send is the second argument to the method being called, and so on.

Let's take a look at some additional cases.

In the following example, we send the each method and can still pass a block:

[1,2,3].send(:each) do |i|
puts i
end

Let&apos...