diff options
| -rw-r--r-- | activesupport/lib/active_support/core_ext/enumerable.rb | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/activesupport/lib/active_support/core_ext/enumerable.rb b/activesupport/lib/active_support/core_ext/enumerable.rb index eae964bc2e..9a893157ea 100644 --- a/activesupport/lib/active_support/core_ext/enumerable.rb +++ b/activesupport/lib/active_support/core_ext/enumerable.rb @@ -114,11 +114,15 @@ end # just calling the compat method in the first place. if Array.instance_methods(false).include?(:sum) && !(%w[a].sum rescue false) class Array - remove_method :sum + alias :orig_sum :sum - def sum(*args) #:nodoc: - # Use Enumerable#sum instead. - super + def sum(init = nil, &block) #:nodoc: + if init.is_a?(Numeric) || first.is_a?(Numeric) + init ||= 0 + orig_sum(init, &block) + else + super + end end end end |