Issue #15984 has been updated by alanwu (Alan Wu).


>  This generates a wrong output collection after doing this action.

Could you provide some examples and explain exactly what is wrong with the output collection?

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Bug #15984: deleting from a collection while iterating on it
https://bugs.ruby-lang.org/issues/15984#change-79102

* Author: aothelal (Abdelrahman Othman Helal)
* Status: Open
* Priority: Normal
* Assignee: 
* Target version: 
* ruby -v: 2.6.3
* Backport: 2.4: UNKNOWN, 2.5: UNKNOWN, 2.6: UNKNOWN
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If you tried to delete from a collection while iterating on it Ruby will allow you to do this flawlessly. This generates a wrong output collection after doing this action. An exception should be thrown to disallow this to be done.  



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