Ruby - Methods
Why does Ruby raise an ArgumentError when calling a method with keyword arguments if a required keyword is missing?
Why does Ruby raise an ArgumentError when calling a method with keyword arguments if a required keyword is missing?
hard📝 Conceptual Q10 of 15
Step-by-Step Solution
Solution:
Step 1: Understand required keyword arguments
Required keyword arguments have no default and must be passed when calling the method.Step 2: Reason about error cause
If a required keyword is missing, Ruby raises ArgumentError to signal the problem.Final Answer:
Because required keyword arguments must always be provided explicitly -> Option CQuick Check:
Missing required keyword args cause ArgumentError [OK]
Quick Trick: Required keywords must be passed or error occurs [OK]
Common Mistakes:
- Thinking keyword args are always optional
- Confusing positional and keyword argument errors
- Believing Ruby lacks keyword argument support
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