[#102652] [Ruby master Bug#17664] Behavior of sockets changed in Ruby 3.0 to non-blocking — ciconia@...
Issue #17664 has been reported by ciconia (Sharon Rosner).
23 messages
2021/02/28
[ruby-core:102401] [Ruby master Feature#17608] Compact and sum in one step
From:
hanmac@...
Date:
2021-02-05 13:27:09 UTC
List:
ruby-core #102401
Issue #17608 has been updated by Hanmac (Hans Mackowiak).
you can use that `nil.to_i` returns 0
`a.sum(&:to_i) #=> 6`
----------------------------------------
Feature #17608: Compact and sum in one step
https://bugs.ruby-lang.org/issues/17608#change-90272
* Author: sawa (Tsuyoshi Sawada)
* Status: Open
* 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
```
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