I am very curious to know what the difference is between send and public_send. E.g.:

class Klass def hello(*args) "Hello " + args.join(' ') end
end
k = Klass.new
k.send :hello, "gentle", "readers" #=> "Hello gentle readers"
k.public_send :hello, "gentle", "readers" #=> "Hello gentle readers"

Can someone please explain the difference?

2

1 Answer

Unlike send, public_send calls public methods only.

Example:

class Klass private def private_method puts "Hello" end
end
k = Klass.new
k.send(:private_method)
=> "Hello"
k.public_send(:private_method)
=> `public_send': private method `private_method' called for #<Klass:0x007f5fd7159a80> (NoMethodError)

0

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