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I send an array from rest client and received it like this: "[1,2,3,4,5]"

Now I just want to convert it into Array without using Ruby's eval method. Any Ruby's default method that we could use for this?

 "[1,2,3,4,5]" => [1,2,3,4,5]
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require 'json'

JSON.parse "[1,2,3,4,5]"
  #=> [1, 2, 3, 4, 5] 

JSON.parse "[[1,2],3,4]"
  #=> [[1, 2], 3, 4] 

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