1 files changed, 10 insertions, 9 deletions
diff --git a/mrbgems/mruby-enumerator/mrblib/enumerator.rb b/mrbgems/mruby-enumerator/mrblib/enumerator.rb
index a60f19aaf..c872ceedc 100644
--- a/mrbgems/mruby-enumerator/mrblib/enumerator.rb
+++ b/mrbgems/mruby-enumerator/mrblib/enumerator.rb
@@ -110,7 +110,7 @@ class Enumerator
   #     p fib.take(10) # => [1, 1, 2, 3, 5, 8, 13, 21, 34, 55]
   #
   def initialize(obj=nil, meth=:each, *args, &block)
-    if block_given?
+    if block
       obj = Generator.new(&block)
     else
       raise ArgumentError unless obj
@@ -151,8 +151,9 @@ class Enumerator
   #
   # +offset+:: the starting index to use
   #
-  def with_index(offset=0)
-    return to_enum :with_index, offset unless block_given?
+  def with_index(offset=0, &block)
+    return to_enum :with_index, offset unless block
+
     offset = if offset.nil?
       0
     elsif offset.respond_to?(:to_int)
@@ -164,7 +165,7 @@ class Enumerator
     n = offset - 1
     enumerator_block_call do |*i|
       n += 1
-      yield i.__svalue, n
+      block.call i.__svalue, n
     end
   end
 
@@ -209,11 +210,11 @@ class Enumerator
   #   # => foo:1
   #   # => foo:2
   #
-  def with_object(object)
-    return to_enum(:with_object, object) unless block_given?
+  def with_object(object, &block)
+    return to_enum(:with_object, object) unless block
 
     enumerator_block_call do |i|
-      yield [i,object]
+      block.call [i,object]
     end
     object
   end
@@ -277,7 +278,7 @@ class Enumerator
       end
       obj.args = args
     end
-    return obj unless block_given?
+    return obj unless block
     enumerator_block_call(&block)
   end
 
@@ -538,7 +539,7 @@ class Enumerator
   # just for internal
   class Yielder
     def initialize(&block)
-      raise LocalJumpError, "no block given" unless block_given?
+      raise LocalJumpError, "no block given" unless block
 
       @proc = block
     end