Finding unique hash value within array of hashes (Ruby)

Question

a[0] = {:id => '1234', :value => '37'}
a[1] = {:id => '4321', :value => '50'}
a[2] = {:id => '1122', :value => '50'}

From here I want to be able to check to see if a hash exists with :id => '4321' without having to loop through the array manually. Is there anything where I can do something like this: a.exists?(:id => '4321') ? I've tried a few things but can't seem to figure it out. Thanks!

rjk · Accepted Answer · 2010-09-23 02:09:03Z

6

How about:

a.any? {|x| x[:id] == '4321' }

That will return true if the block returns true.

answered Sep 23, 2010 at 2:09

rjk

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1 Comment

Nate Flink Over a year ago

Similar to stackoverflow.com/questions/3794039/… - but a different operation that I needed, thanks!

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