CODEWITHSUNDEEP
ruby-on-railsrubyactiverecorduniq
Jonathan_W
Jonathan_W

Reputation: 648

Ruby uniq with extra condition

I have an array of ActiveRecord objects where Object.word is a string.

I know that 

array.uniq{|s| s.word}

will return the objects with unique :word values.

I also want to make an extra condition (using uniq if possible) so that no word is one character away from another: specifically, I don't want to return objects with both the words "know" and "knows", or "weigh" and "weighs" but only to choose one of them.

Is there a neat, intuitive way to achieve this?

Upvotes: 0

Views: 1493

Answers (2)

Jorge de los Santos
Jorge de los Santos

Reputation: 4633

You can use singularize in Rails to get the singular value of the word, and still use your uniq code:

array.uniq{|s| s.word.singularize}


[2] pry(main)> ["test", "tests", "word", "words", "entity", "entities"].uniq{|s| s.singularize}
=> ["test", "word", "entity"]

Upvotes: 1

mohamed-ibrahim
mohamed-ibrahim

Reputation: 11137

You can use reject to reject some elements depend on some conditions for example:

 [1,2,3].reject {|a| a > 1}  # [1]

Upvotes: 2

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