[Solved] How can you combine multiple guard clauses to check for nil or empty input before processing?def process(input) # guard clauses here "Processed #{input}" end | Ruby

Ruby - Control Flow

How can you combine multiple guard clauses to check for nil or empty input before processing?

def process(input)
  # guard clauses here
  "Processed #{input}"
end

Areturn nil unless input.nil? return nil unless input.empty?

Breturn nil if input.nil? || input.empty?

Creturn nil unless input.nil? || input.empty?

Dreturn nil if input.nil? && input.empty?

Step-by-Step Solution

Solution:

Step 1: Understand combined condition
We want to return nil if input is either nil OR empty.
Step 2: Analyze options
return nil if input.nil? || input.empty? uses 'return nil if input.nil? || input.empty?' which correctly combines conditions with OR.
Final Answer:
return nil if input.nil? || input.empty? -> Option B
Quick Check:
Use '||' to combine multiple guard clause conditions [OK]

Quick Trick: Combine conditions with '||' for multiple guard checks [OK]

Common Mistakes:

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How can you combine multiple guard clauses to check for nil or empty input before processing?