Get array index based on child hash value

Question

Say I have this:

[
  {
             :id => 34,
    :votes_count => 3
  },
  {
             :id => 2,
    :votes_count => 0
  },
]

How do I get the index based on id? What I want to do is return 0 when I search for id: 34, and 1 when I search for id: 2. What is the most efficient way?

Answer 1

You can pass a block to #index:

array.index {|h| h[:id] == 34 } # => 0