Ruby - Hashes
What happens if you try to access a key that does not exist in a Ruby hash with a default value set?
What happens if you try to access a key that does not exist in a Ruby hash with a default value set?
easy📝 Conceptual Q1 of 15
Step-by-Step Solution
Solution:
Step 1: Understand default value behavior
When a default value is set for a Ruby hash, accessing a missing key returns that default value instead of nil.Step 2: Compare with normal hash behavior
Without a default, missing keys return nil. With default, it returns the set default value.Final Answer:
It returns the default value instead of nil -> Option BQuick Check:
Default value returns instead of nil [OK]
Quick Trick: Default values replace nil for missing keys in Ruby hashes [OK]
Common Mistakes:
- Thinking it raises an error
- Assuming nil is always returned
- Confusing default with key creation
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