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# A set of monkey patches for the ruby programmer who isn't yet satisified with the core library
class Object
  # useful for reflection
  def local_methods(obj = self)
    (obj.methods - obj.class.superclass.instance_methods).sort
  end
end
class String
  # does the string look numeric?
  def num?
    Float(self)
  rescue
    false
  end
end
class Integer
  # 1 is true and 0 is false
  def c_truth
    {1 => true, 0 => false}[self]
  end
end
class Numeric
  # improves polymorphism of String#num?
  def num?
    # This is obviously numeric because it's Numeric aha!
    true
  end
end
class Hash
  # remove stuff from a hash with an array (or single value) of keys
  def remove(keys)
    copy = clone
    keys = [keys] unless keys.respond_to?(:each)
    keys.each { |e| copy.delete(e) }
    copy
  end
  # I particuarly like these
  alias - remove
  alias + merge
end

module Enumerable
  # all the indexes for which block yields, which is passed values, is true
  def detect_all_indexes
    detected = []
    each_with_index { |e, i| detected << i if yield e }
    detected
  end
  
  # same as above only breaks after first successful detection
  def detect_index
    detected = nil
    each_with_index do |e, i|
       if yield e
         detected = i
         break
       end
    end
    detected
  end
  
  # damn that's a lot of aliases, oh sorry alices :-P
  alias detect_all_indices detect_all_indexes
  alias detect_all_indices detect_all_indexes
  alias find_all_indexes detect_all_indexes
  alias find_all_indices detect_all_indexes
  alias find_index detect_index

end

unless defined?(__method__) # already defined in ruby 1.9
  # returns the name of the current method
  def __method__
    caller[0][/`([^']*)'/, 1].to_sym
  end
  alias __callee__ __method__
end

if __FILE__ == $0
  
  require "test/unit/ui/console/testrunner"
  
  class NewDetects < Test::Unit::TestCase
    def test_detect_first_index
      assert_equal(2, %w{a b c d}.detect_index { |e| e == 'c' })
    end
    def test_detect_index
      assert_equal([1,3,5], %w{a b1 c d2 e f3 g}.detect_all_indexes { |e| e =~ /\d/ })
    end
  end
  
  Test::Unit::UI::Console::TestRunner.run(NewDetects)
  
  # not much test coverage, this is unlike me
  
end