# Re: Class Methods

**URL:** <https://www.ruby-forum.com/t/re-class-methods/59910>\
**Category:** Ruby\
**Created:** [May 8, 2006, 3:07pm UTC](https://www.ruby-forum.com/t/re-class-methods/59910 "2006-05-08T15:07:13Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![kivle](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/e480ec/32.png) [@kivle](https://www.ruby-forum.com/u/kivle)\
**Post date:** [May 8, 2006, 3:07pm UTC](https://www.ruby-forum.com/t/re-class-methods/59910/1 "2006-05-08T15:07:13Z")

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One solution would be to use ruby-array’s “set-like” functionality:

onlyClassBMethods = ClassB.instance\_methods - ClassA.instance\_methods

Don’t know if this is what you’re looking for?

Regards,  
Helge E.

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**Author:** ![kivle](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/e480ec/32.png) [@kivle](https://www.ruby-forum.com/u/kivle)\
**Post date:** [May 8, 2006, 3:10pm UTC](https://www.ruby-forum.com/t/re-class-methods/59910/2 "2006-05-08T15:10:23Z")

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Edwin, Helge - thank you.

I can’t believe I didn’t put that together.

Have a great day.