Ruby - Hashes
How can you use
Example:
dig to safely access the first element of an array nested inside a hash?Example:
h = {arr: [10, 20, 30]}How can you use dig to safely access the first element of an array nested inside a hash?
hard📝 Application Q9 of 15
Step-by-Step Solution
Solution:
Step 1: Understand dig with arrays
dig can take integer indexes to access array elements nested inside hashes.Step 2: Use dig with symbol key and index
Callingh.dig(:arr, 0)accesses the first element (10) safely.Final Answer:
h.dig(:arr, 0) -> Option BQuick Check:
dig accepts integer indexes for arrays [OK]
Quick Trick: Use dig with symbol key and integer index for arrays [OK]
Common Mistakes:
- Using string index instead of integer
- Calling dig on array directly
- Using symbol for array index
Master "Hashes" in Ruby
Want More Practice?
15+ quiz questions · All difficulty levels · Free
Free Signup - Practice All QuestionsMore Ruby Quizzes