[ruby-core:105367] [Ruby master Feature#12775] Random subset of array

Issue #12775 has been updated by nobu (Nobuyoshi Nakada).

Status changed from Feedback to Rejected

No feedback 5 years.
Feel free to re-open if you have any new points of view.

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Feature #12775: Random subset of array
https://bugs.ruby-lang.org/issues/12775#change-93784

* Author: sawa (Tsuyoshi Sawada)
* Status: Rejected
* Priority: Normal
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I often see use cases to randomly sample a subset from an array like this:

```ruby
a = [3, 2, 6, 2, 6, 1]
a.sample(rand(a.length + 1)) # => [2, 6, 6, 3]
```

I request extending `Array#sample` to let it take an option (such as `:arbitrary`) for doing that:

```ruby
a.sample(:arbitrary) # => [2, 6, 6, 3]
```

or perhaps having an independent method (like `samples`) to do it.

```ruby
a.samples # => [2, 6, 6, 3]
```




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