diff options
Diffstat (limited to 'mrbgems/mruby-array-ext/mrblib/array.rb')
| -rw-r--r-- | mrbgems/mruby-array-ext/mrblib/array.rb | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/mrbgems/mruby-array-ext/mrblib/array.rb b/mrbgems/mruby-array-ext/mrblib/array.rb index fa3db3a70..be1676666 100644 --- a/mrbgems/mruby-array-ext/mrblib/array.rb +++ b/mrbgems/mruby-array-ext/mrblib/array.rb @@ -175,6 +175,24 @@ class Array ## # call-seq: + # ary.intersection(other_ary,...) -> new_ary + # + # Set Intersection---Returns a new array containing elements common to + # this array and <i>other_ary</i>, removing duplicates. + # + # ["a", "b", "c"].union(["c", "d", "a"], ["a", "c", "e"]) + # #=> ["a", "b", "c", "d", "e"] + # + def intersection(*args) + ary = self + args.each do |x| + ary = ary & x + end + ary + end + + ## + # call-seq: # ary.flatten -> new_ary # ary.flatten(level) -> new_ary # |