Feature #17608
Updated by sawa (Tsuyoshi Sawada) almost 4 years ago
Many use cases of `Array#sum` are preceded with the `compact` method or are followed by a block to ensure the value is addable. ```ruby a = [1, nil, 2, 3] a.sum # !> TypeError a.compact.sum # => 6 a.sum{_1 || 0} # => 6 ``` I propose there should be a way to do that in one step. I request either of the following: A. Change the current behaviour to skip `nil`s. ```ruby a.sum # => 6 ``` B. `array#filter_sum` method ```ruby a.filter_sum # => 6 ``` C. B. An option for `Array#sum` ```ruby a.sum(compact: true) # => 6 ```