[Solved] Which Ruby code snippet correctly determines if a block was passed to a method? — Ans: if block_given?; puts "Block present"; end | Ruby

Ruby - Blocks, Procs, and Lambdas

Which Ruby code snippet correctly determines if a block was passed to a method?

Aif yield; puts "Block present"; end

Bif block_given?; puts "Block present"; end

Cif block_given; puts "Block present"; end

Dif block; puts "Block present"; end

Step-by-Step Solution

Solution:

Step 1: Identify correct method call
block_given? is a method and must be called with parentheses or as a method call.
Step 2: Analyze options
if block_given?; puts "Block present"; end uses block_given? correctly. if yield; puts "Block present"; end incorrectly uses yield as a condition. if block_given; puts "Block present"; end misses the question mark. if block; puts "Block present"; end uses an undefined variable block.
Final Answer:
if block_given?; puts "Block present"; end -> Option B
Quick Check:
Use block_given? with question mark [OK]

Quick Trick: Use block_given? with question mark to check block [OK]

Common Mistakes:

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Which Ruby code snippet correctly determines if a block was passed to a method?