From: nobu@...
Date: 2020-03-10T04:58:01+00:00
Subject: [ruby-dev:50920] [Ruby master Feature#3647] Array#sample(n,	replace=false)

Issue #3647 has been updated by nobu (Nobuyoshi Nakada).

Description updated

https://github.com/ruby/ruby/pull/2955
The option name is `replace` for now.

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Feature #3647: Array#sample(n, replace=false)
https://bugs.ruby-lang.org/issues/3647#change-84567

* Author: mrkn (Kenta Murata)
* Status: Feedback
* Priority: Normal
* Assignee: mrkn (Kenta Murata)
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`Array#sample` does not support sampling with replacement directly, so we must write codes like the following to obtain samples with replacement.

```ruby
samples_with_replacement = n.times.map { source.sample }
```
 
If `Array#sample` has the argument for switching with/without replacement, we can write it as follow.
 
```ruby
samples_with_replacement = source.sample(n, true)
```
 
The patch was attached.  Please consider to merge.



---Files--------------------------------
array_sample_with_replace.patch (3.64 KB)
array_sample_with_replace_hash.patch (4.35 KB)
array_sample_shuffle.patch (9.62 KB)


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