# Why Enumerable adds "replace" method?

**URL:** <https://www.ruby-forum.com/t/why-enumerable-adds-replace-method/161142>\
**Category:** Ruby\
**Created:** [February 23, 2009, 8:32pm UTC](https://www.ruby-forum.com/t/why-enumerable-adds-replace-method/161142 "2009-02-23T20:32:24Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ISSSSaki\_Baz\_C](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/i/51bf81/32.png) [@ISSSSaki\_Baz\_C](https://www.ruby-forum.com/u/ISSSSaki_Baz_C)\
**Post date:** [February 23, 2009, 8:32pm UTC](https://www.ruby-forum.com/t/why-enumerable-adds-replace-method/161142/1 "2009-02-23T20:32:24Z")

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Hi, when including Enumerable module in a class, its instances get  
the “replace” method in which I’m not interested. Why this method is  
added?  
It doesn’t appear in Enumerable.

Thanks.

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<div class="post-metadata">

**Author:** ![ISSSSaki\_Baz\_C](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/i/51bf81/32.png) [@ISSSSaki\_Baz\_C](https://www.ruby-forum.com/u/ISSSSaki_Baz_C)\
**Post date:** [February 23, 2009, 8:40pm UTC](https://www.ruby-forum.com/t/why-enumerable-adds-replace-method/161142/2 "2009-02-23T20:40:36Z")

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On Feb 23, 12:30 pm, Iñaki Baz C. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> Hi, when including Enumerable module in a class, its instances get  
> the “replace” method in which I’m not interested. Why this method is added?

It isn’t.

Ruby 1.8.6 p114

class Foo  
include Enumerable  
end

Foo.instance\_methods.include?(‘replace’) =\> false

Regards,

Dan

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<div class="post-metadata">

**Author:** ![ISSSSaki\_Baz\_C](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/i/51bf81/32.png) [@ISSSSaki\_Baz\_C](https://www.ruby-forum.com/u/ISSSSaki_Baz_C)\
**Post date:** [February 23, 2009, 8:48pm UTC](https://www.ruby-forum.com/t/why-enumerable-adds-replace-method/161142/3 "2009-02-23T20:48:49Z")

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El Lunes, 23 de Febrero de 2009, Daniel B.  
escribió:\> include Enumerable

> end
> 
> Foo.instance\_methods.include?(‘replace’) =\> false

Sorry, my fault. Thanks a lot.