From: eregontp@... Date: 2021-02-05T20:05:42+00:00 Subject: [ruby-core:102404] [Ruby master Feature#17608] Compact and sum in one step Issue #17608 has been updated by Eregon (Benoit Daloze). I closed it. It seems clear there is no need for a new method or keyword argument, when `a.sum{_1 || 0}` already works well, is clear and concise. In general it's a good idea to think about what to do with missing data anyway, ignoring might not always be appropriate. ---------------------------------------- Feature #17608: Compact and sum in one step https://bugs.ruby-lang.org/issues/17608#change-90276 * Author: sawa (Tsuyoshi Sawada) * Status: Rejected * Priority: Normal ---------------------------------------- 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. An option for `Array#sum` ```ruby a.sum(compact: true) # => 6 ``` -- https://bugs.ruby-lang.org/ Unsubscribe: