How can I return a value from a thread in Ruby?

Question

If I have the following code :

threads = []
(1..5).each do |i|
  threads << Thread.new { `process x#{i}.bin` } 
end
threads.each do |t|
  t.join
  # i\'d l         


        

Answer 1

This is a simple, and interesting way to use Thread#value:

a, b, c = [
  Thread.new { "something" },
  Thread.new { "something else" },
  Thread.new { "what?" }
].map(&:value)

a # => "something"
b # => "something else"
c # => "what?"