[Solved] What is wrong with this Ruby code? def display yield 'Ruby' end display — Ans: It raises a LocalJumpError because no block is given | Ruby

Ruby - Blocks, Procs, and Lambdas

What is wrong with this Ruby code?

def display
  yield 'Ruby'
end

display

AIt prints 'Ruby' without errors

BIt raises a LocalJumpError because no block is given

CIt returns nil silently

DIt causes a syntax error

Step-by-Step Solution

Solution:

Step 1: Method calls yield with argument
The method expects a block to be passed to execute yield 'Ruby'.
Step 2: No block given
Calling display without a block causes Ruby to raise LocalJumpError.
Final Answer:
It raises a LocalJumpError because no block is given -> Option B
Quick Check:
Yield without block causes LocalJumpError [OK]

Quick Trick: Always pass a block when using yield [OK]

Common Mistakes:

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