diff options
| -rw-r--r-- | mrblib/enum.rb | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/mrblib/enum.rb b/mrblib/enum.rb index 666ada294..29422716c 100644 --- a/mrblib/enum.rb +++ b/mrblib/enum.rb @@ -199,7 +199,12 @@ module Enumerable # # ISO 15.3.2.2.11 def inject(*args, &block) - raise ArgumentError, "too many arguments" if args.size > 2 + raise ArgumentError, "too many arguments" if args.size > 3 + if Symbol === args[-1] + sym = args[-1] + block = ->(x,y){x.send(sym,y)} + args.pop + end if args.empty? flag = true # no initial argument result = nil @@ -218,6 +223,7 @@ module Enumerable } result end + alias reduce inject ## # Alias for collect |