Ruby - Arrays
Identify the error in this Ruby code that tries to add an item to an array:
numbers = [1, 2, 3] numbers.add(4)
Identify the error in this Ruby code that tries to add an item to an array:
medium📝 Debug Q14 of 15
Step-by-Step Solution
Solution:
Step 1: Check the method used to add items to arrays
Ruby arrays use 'push' or '<<' to add items, not 'add'.Step 2: Identify the error cause
Calling 'add' on an array causes a NoMethodError because it is not a valid method.Final Answer:
The method 'add' does not exist for arrays -> Option CQuick Check:
Use 'push' or '<<' to add items [OK]
Quick Trick: Use 'push' or '<<' to add items to arrays [OK]
Common Mistakes:
MISTAKES- Using 'add' instead of 'push' or '<<'
- Thinking arrays cannot be changed
- Adding numbers as strings unnecessarily
Master "Arrays" in Ruby
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