From cb5e6edb7f8fa1117192da7732446229d93993c8 Mon Sep 17 00:00:00 2001
From: Jun Hiroe <Jun.Hiroe@gmail.com>
Date: Fri, 18 Apr 2014 22:28:42 +0900
Subject: Add a block argument with Array#uniq

---
 mrbgems/mruby-array-ext/mrblib/array.rb | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

(limited to 'mrbgems/mruby-array-ext/mrblib/array.rb')

diff --git a/mrbgems/mruby-array-ext/mrblib/array.rb b/mrbgems/mruby-array-ext/mrblib/array.rb
index 0da5d05a8..6c47235fe 100644
--- a/mrbgems/mruby-array-ext/mrblib/array.rb
+++ b/mrbgems/mruby-array-ext/mrblib/array.rb
@@ -43,16 +43,24 @@ class Array
 
   ##
   # call-seq:
-  #    ary.uniq   -> new_ary
+  #    ary.uniq                -> new_ary
+  #    ary.uniq { |item| ... } -> new_ary
   #
   # Returns a new array by removing duplicate values in +self+.
   #
   #    a = [ "a", "a", "b", "b", "c" ]
   #    a.uniq   #=> ["a", "b", "c"]
   #
-  def uniq
+  #    b = [["student","sam"], ["student","george"], ["teacher","matz"]]
+  #    b.uniq { |s| s.first } # => [["student", "sam"], ["teacher", "matz"]]
+  #
+  def uniq(&block)
     ary = self.dup
-    ary.uniq!
+    if block
+      ary.uniq!(&block)
+    else 
+      ary.uniq!
+    end
     ary
   end
 
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