From: zverok.offline@...
Date: 2018-05-23T10:35:16+00:00
Subject: [ruby-core:87237] [Ruby trunk Feature#14783] String#chars_at /	String#bytes_at

Issue #14783 has been updated by zverok (Victor Shepelev).


```ruby
string = 'hello, world!'
string.chars.values_at(0, 5, 7, 12)
# => ["h", ",", "w", "!"]
string.chars.values_at(0, 5, 7, 12).join
# => "h,w!" 
```
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----------------------------------------
Feature #14783: String#chars_at / String#bytes_at
https://bugs.ruby-lang.org/issues/14783#change-72225

* Author: sos4nt (Stefan Sch����ler)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
----------------------------------------
I just wanted to extract characters at certain indices from a string and noticed that there's no `values_at` counterpart for `String`.

I'd therefore like to propose two new `String` methods:

* `chars_at(selector, ...) ��� new_str`
* `bytes_at(selector, ...) ��� new_str`

which work basically like [`Array#values_at`](http://ruby-doc.org/core/Array.html#method-i-values_at), e.g.:

```ruby
string = 'hello, world!'
string.chars_at(0, 5, 7, 12)  #=> "h,w!" 
string.chars_at(0..4, 7..11)  #=> "helloworld" 
```





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