From 97203729a90cbeecd852ba208439d2fd78a0b27d Mon Sep 17 00:00:00 2001
From: buty4649 <buty4649@gmail.com>
Date: Sat, 20 Jan 2024 11:47:37 +0900
Subject: [PATCH] Add Enumerable#grep_v to mruby-enum-ext

---
 mrbgems/mruby-enum-ext/mrblib/enum.rb | 11 +++++++++++
 mrbgems/mruby-enum-ext/test/enum.rb   |  7 +++++++
 2 files changed, 18 insertions(+)

diff --git a/mrbgems/mruby-enum-ext/mrblib/enum.rb b/mrbgems/mruby-enum-ext/mrblib/enum.rb
index 2c9e8d3a5..28562a1b9 100644
--- a/mrbgems/mruby-enum-ext/mrblib/enum.rb
+++ b/mrbgems/mruby-enum-ext/mrblib/enum.rb
@@ -840,6 +840,17 @@ module Enumerable
 
   alias filter select
 
+  def grep_v(pattern, &block)
+    ary = []
+    self.each{|*val|
+      sv = val.__svalue
+      unless pattern === sv
+        ary.push((block)? block.call(*val): sv)
+      end
+    }
+    ary
+  end
+
   ##
   # call-seq:
   #   enum.tally -> a_hash
diff --git a/mrbgems/mruby-enum-ext/test/enum.rb b/mrbgems/mruby-enum-ext/test/enum.rb
index 31181fe1a..98ace670e 100644
--- a/mrbgems/mruby-enum-ext/test/enum.rb
+++ b/mrbgems/mruby-enum-ext/test/enum.rb
@@ -195,3 +195,10 @@ end
 assert("Enumerable#tally") do
   assert_equal({"a"=>1, "b"=>2, "c"=>1}, ["a", "b", "c", "b"].tally)
 end
+
+assert("Enumerable#grep_v") do
+  a = [1, 2, 3, 4, 5, 0]
+  assert_equal [1, 5, 0], a.grep_v(2..4)
+  assert_equal [1, 2, 3, 4, 5, 0], a.grep_v(6..8)
+  assert_equal [2, 4, 6, 8, 10], a.grep_v(0) {|v| v * 2}
+end