Ruby: How to chain multiple method calls together with "send"

Building upon previous answers, in case you need to pass arguments to each method, you can use this:

def send_chain(arr)
  Array(arr).inject(self) { |o, a| o.send(*a) }
end

You can then use the method like this:

arr = [:to_i, [:+, 4], :to_s, [:*, 3]]
'1'.send_chain(arr) # => "555"

This method accepts single arguments as well.

I just ran across this and it really begs for inject:

def send_chain(arr)
  arr.inject(self) {|o, a| o.send(a) }
end