ostruct.rb: Accept block for to_h [#15451].

Patch by Shuji Kobayashi.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66496 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 15 insertions, 2 deletions

diff --git a/lib/ostruct.rb b/lib/ostruct.rb
index 67ba043535..a758a65979 100644
--- a/lib/ostruct.rb
+++ b/lib/ostruct.rb
@@ -105,15 +105,28 @@ class OpenStruct
   end
 
   #
+  # call-seq:
+  #   ostruct.to_h                        -> hash
+  #   ostruct.to_h {|name, value| block } -> hash
+  #
   # Converts the OpenStruct to a hash with keys representing
   # each attribute (as symbols) and their corresponding values.
   #
+  # If a block is given, the results of the block on each pair of
+  # the receiver will be used as pairs.
+  #
   #   require "ostruct"
   #   data = OpenStruct.new("country" => "Australia", :capital => "Canberra")
   #   data.to_h   # => {:country => "Australia", :capital => "Canberra" }
+  #   data.to_h {|name, value| [name.to_s, value.upcase] }
+  #               # => {"country" => "AUSTRALIA", "capital" => "CANBERRA" }
   #
-  def to_h
-    @table.dup
+  def to_h(&block)
+    if block_given?
+      @table.to_h(&block)
+    else
+      @table.dup
+    end
   end
 
   #