diff options
| -rw-r--r-- | mrbgems/mruby-enum-ext/mrblib/enum.rb | 18 | ||||
| -rw-r--r-- | mrbgems/mruby-enum-ext/test/enum.rb | 7 |
2 files changed, 25 insertions, 0 deletions
diff --git a/mrbgems/mruby-enum-ext/mrblib/enum.rb b/mrbgems/mruby-enum-ext/mrblib/enum.rb index 90f321596..1ca62b673 100644 --- a/mrbgems/mruby-enum-ext/mrblib/enum.rb +++ b/mrbgems/mruby-enum-ext/mrblib/enum.rb @@ -208,4 +208,22 @@ module Enumerable a end end + + def count(v=nil, &block) + count = 0 + if block + self.each do |e| + count += 1 if block.call(e) + end + else + if v == nil + self.each { count += 1 } + else + self.each do |e| + count += 1 if e == v + end + end + end + count + end end diff --git a/mrbgems/mruby-enum-ext/test/enum.rb b/mrbgems/mruby-enum-ext/test/enum.rb index a14d7f492..065ef7f5f 100644 --- a/mrbgems/mruby-enum-ext/test/enum.rb +++ b/mrbgems/mruby-enum-ext/test/enum.rb @@ -53,3 +53,10 @@ assert("Enumerable#first") do assert_equal [1, 2, 3], a.first(10) assert_nil [].first end + +assert("Enumerable#count") do + a = [1, 2, 4, 2] + assert_equal 4, a.count + assert_equal 2, a.count(2) + assert_equal 3, a.count{|x| x % 2 == 0} +end |