[Solved] Identify the error in this Ruby code snippet: pid = fork do puts 'Child' end Process.wait — Ans: Process.wait requires a PID argument to wait for the specific child | Ruby

Ruby - Concurrent Programming

Identify the error in this Ruby code snippet:

pid = fork do
  puts 'Child'
end
Process.wait

AProcess.wait requires a PID argument to wait for the specific child

Bfork block syntax is incorrect

Cputs cannot be used inside fork

DProcess.wait should be Process.waitall

Step-by-Step Solution

Solution:

Step 1: Check Process.wait usage
Process.wait without a PID argument waits for any child, but to wait for this specific child it requires the pid argument.
Step 2: Confirm fork block and puts are valid
Fork block syntax and puts inside are correct; no syntax error there.
Final Answer:
Process.wait requires a PID argument -> Option A
Quick Check:
Process.wait needs PID for specific child [OK]

Quick Trick: Pass PID to Process.wait to wait for specific child [OK]

Common Mistakes:

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