Retrieving an element of an array that is a value of a hash with Ruby

Question

I have the following hash:

hash = {"A" =>[1,2,3,4]}

Within that hash is a key "A" with the value of [1,2,3,4].

Is there a possible way to access a single element within my array using the key-value pair?

Example (...yes I know this isn't legal Ruby):

hash["A",0] => 1

Or have the ability to see if the array included a value with the key-value pair?

hash["A".include? 4] => true

Surya · Accepted Answer · 2014-10-16 19:42:00Z

6

Did you mean this?:

hash = {"A" =>[1,2,3,4]}
hash["A"][0] #=> 1
hash["A"].include? 4 #=> true

answered Oct 16, 2014 at 19:42

Surya

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2 Comments

Thank you...I didn't know you could do that!

Well, hash["A"] will give you the value at key "A" in hash which is an array. That means you can use any array operations on hash["A"].