ruby self.send how to understand

Question

  class LogEntry
    attr_reader :term, :index, :command

    def initialize(term, index, command)
      @term, @index, @command = term, index, command
    end

    def ==(other)
      [:term, :index, :command].all? do |attr|
        self.send(attr) == other.send(attr)
      end
    end

    def eql?(other)
      self == other
    end

    def hash
      [:term, :index, :command].reduce(0) do |h, attr|
        h ^= self.send(attr)
      end
    end
  end

I am reading a code like this, how to understand "self.send" at this line?

self.send(attr) == other.send(attr)

thanks

Did you read ruby-doc?(http://ruby-doc.org/core-2.2.3/Object.html#method-i-send) — Sergei Stralenia, Oct 20 '15 at 07:46

score 3 · Answer 1 · answered Oct 20 '15 at 07:46

3

Looks like a fancy way of doing:

self.term == other.term and
self.index == other.index and
self.comment == other.comment

answered Oct 20 '15 at 07:46

Mattias Wadman

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ruby self.send how to understand

1 Answers1