Merge branch 'master' of git://github.com/mtodd/extlib into mtodd

lib/extlib/object.rb

@@ -148,4 +148,17 @@ def in?(arrayish,*more)
     arrayish = more.unshift(arrayish) unless more.empty?
     arrayish.include?(self)
   end
+
+  # @note
+  #   For instances of objects that don't override the #inspect method, there
+  #   is an encoded hash to uniquely identify the object. This method
+  #   reproduces this to be used in #inspect in order to keep the same look
+  #   as well as provide this information.
+  #   This is inessential, but may be useful.
+  # 
+  # @return <String>
+  #   Returns the 16-byte encoded hash for the object
+  def encoded_hash
+    (self.hash * 2).to_s(16)
+  end
 end

spec/object_spec.rb

@@ -18,6 +18,10 @@ class Bar
   end
 end
 
+class Oi
+  attr_accessor :foo
+end
+
 describe Object do
 
   describe "#full_const_get" do
@@ -108,4 +112,18 @@ class Bar
       5.in?(@set).should be(true)
     end
   end
+
+  describe "#encoded_hash" do
+    it 'returns the encoded hash like the value in the default Object#inspect' do
+      o = Oi.new
+      original_inspect = o.inspect
+      original_inspect.should =~ %r{#<Oi:0x([a-z0-9]{6,})>}
+
+      o.foo = 1
+      o.inspect.should =~ %r{#<Oi:0x([a-z0-9]{6,}) @foo=1>}
+
+      class << o; def inspect; "#<Oi:0x#{self.encoded_hash}>"; end; end
+      o.inspect.should == original_inspect
+    end
+  end
 end