Ruby - Methods
Which Ruby method below correctly demonstrates implicit return of the last evaluated expression?
Which Ruby method below correctly demonstrates implicit return of the last evaluated expression?
easy📝 Conceptual Q2 of 15
Step-by-Step Solution
Solution:
Step 1: Review implicit return rules
Ruby returns the last evaluated expression if no explicitreturnis used.Step 2: Evaluate each method
def add(a, b) a + b end returnsa + bimplicitly. def add(a, b) return a + b end returnsnilexplicitly beforea + b. def add(a, b) puts a + b end returnsnilbecauseputsreturns nil. def add(a, b) a + b return nil end explicitly returnsnil.Final Answer:
def add(a, b) a + b end -> Option DQuick Check:
Last expression is returned implicitly [OK]
Quick Trick: Implicit return is last evaluated expression unless return used [OK]
Common Mistakes:
MISTAKES- Confusing puts output with return value
- Assuming return without value returns last expression
- Thinking explicit return nil returns last expression
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