[Solved] You want a Ruby method to return the first non-nil value from two expressions. Which method definition correctly uses Ruby's automatic return to achieve this?def first_non_nil(a, b) # fill in end | Ruby

Ruby - Methods

You want a Ruby method to return the first non-nil value from two expressions. Which method definition correctly uses Ruby's automatic return to achieve this?

def first_non_nil(a, b)
  # fill in
end

Adef first_non_nil(a, b) a || b end

Bdef first_non_nil(a, b) return a if a return b end

Cdef first_non_nil(a, b) puts a || b end

Ddef first_non_nil(a, b) a b end

Step-by-Step Solution

Solution:

Step 1: Understand the goal
We want the method to return the first non-nil value between a and b.
Step 2: Check each option's return value
def first_non_nil(a, b) a || b end returns a || b which evaluates to first non-nil value automatically. def first_non_nil(a, b) return a if a return b end uses explicit returns but is longer. def first_non_nil(a, b) puts a || b end prints but returns nil. def first_non_nil(a, b) a b end returns b always because last line is b.
Final Answer:
def first_non_nil(a, b) a || b end -> Option A
Quick Check:
Last expression returns first non-nil [OK]

Quick Trick: Use last line expression to return desired value without return [OK]

Common Mistakes:

Using puts instead of returning value
Writing multiple return statements unnecessarily
Returning wrong line's value

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More Ruby Quizzes

You want a Ruby method to return the first non-nil value from two expressions. Which method definition correctly uses Ruby's automatic return to achieve this?

Step 1: Understand the goal

Step 2: Check each option's return value

Final Answer:

Quick Check:

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