[Solved] Identify the error in this Ruby code: thread = Thread.new do puts "Running" end thread.wait — Ans: Method 'wait' does not exist for Thread objects. | Ruby

Ruby - Concurrent Programming

Identify the error in this Ruby code:

thread = Thread.new do
  puts "Running"
end
thread.wait

AThread.new requires a parameter to start.

BThread cannot print inside a block.

CBlock syntax is incorrect for Thread.new.

DMethod 'wait' does not exist for Thread objects.

Step-by-Step Solution

Solution:

Step 1: Check method usage on Thread
Ruby Thread class does not have a method named wait. The correct method to wait is join.
Step 2: Verify other code parts
Thread.new syntax and block are correct; printing inside thread is allowed.
Final Answer:
Method 'wait' does not exist for Thread objects. -> Option D
Quick Check:
Use join, not wait, to wait for threads [OK]

Quick Trick: Use thread.join, not thread.wait, to wait for threads [OK]

Common Mistakes:

Master "Concurrent Programming" in Ruby

9 interactive learning modes - each teaches the same concept differently

More Ruby Quizzes

Identify the error in this Ruby code: