Ruby - Hashes
What will this Ruby code output?
info = { a: 1, b: 2 }
info[:c] = 3
puts info[:c]What will this Ruby code output?
medium📝 Predict Output Q5 of 15
Step-by-Step Solution
Solution:
Step 1: Add a new key-value pair to the hash
info[:c] = 3 adds the key :c with value 3 to the hash.Step 2: Access and print the value for :c
puts info[:c] prints 3 because the key :c exists with that value.Final Answer:
3 -> Option DQuick Check:
Adding key-value pairs updates the hash = B [OK]
Quick Trick: You can add keys anytime: hash[:new_key] = value [OK]
Common Mistakes:
- Expecting nil because key was not in original hash
- Confusing key names with values
- Trying to add keys incorrectly
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