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Add Enumerable#uniq?

#6588

Checks for Enumerable content uniqueness

Returns true if the collection has no duplicated content.
Can be called with a block too, much like any?, so people.uniq? { |p| p.age > 26 } returns true if only 1 person is over 26.

Unit test are included.

Please test and +1 this useful tiny patch.

Reported by Bounga · March 16th, 2011 @ 11:17 AM

State: new
Milestone: none
Assigned to: nobody
Importance: none

Activity

  1. Bounga
    Bounga

    Github fork / branch is available at https://github.com/Bounga/rails/commits/enumerable_uniq

    March 16th, 2011 @ 11:28 AM

  2. Bounga
    Bounga

    Same one with calculation cache

    March 16th, 2011 @ 12:18 PM

  3. Bounga
    Bounga

    Better test case for blocks

    March 16th, 2011 @ 03:17 PM

  4. Ryan Orr
    Ryan Orr

    Took a look at the code in the last patch that you posted. I like the implementation but you were missing a test that checked a block that produced a result that wasn't unique. I added a test for this and cleaned up some whitespace errors that I was getting with your patch.

    To avoid whitespacing errors in the future try the command:

    git diff --check

    This will tell you which files are producing whitespace errors if any.

    March 19th, 2011 @ 06:19 PM