Ruby - Error Handling
What does the rescue modifier do in Ruby when used like
value = 10 / x rescue 0?What does the rescue modifier do in Ruby when used like value = 10 / x rescue 0?
easy📝 Conceptual Q11 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the rescue modifier usage
The rescue modifier catches exceptions raised by the expression before it and returns the value after rescue if an error occurs.Step 2: Apply to the example
If10 / xraises an error (like division by zero), the rescue modifier returns 0 instead of crashing.Final Answer:
It returns 0 if dividing by x causes an error -> Option CQuick Check:
rescue modifier returns fallback on error [OK]
Quick Trick: Rescue modifier returns fallback if error happens [OK]
Common Mistakes:
- Thinking rescue modifier prevents all errors
- Assuming it always returns the original expression
- Confusing rescue modifier with if-else
Master "Error Handling" in Ruby
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