<< -> map

Author: tamird

examples/threaded.rb

@@ -4,17 +4,15 @@
 require 'mysql2'
 require 'timeout'
 
-threads = []
 # Should never exceed worst case 3.5 secs across all 20 threads
 Timeout.timeout(3.5) do
-  20.times do
-    threads << Thread.new do
+  20.times.map do
+    Thread.new do
       overhead = rand(3)
       puts ">> thread #{Thread.current.object_id} query, #{overhead} sec overhead"
       # 3 second overhead per query
       Mysql2::Client.new(:host => "localhost", :username => "root").query("SELECT sleep(#{overhead}) as result")
       puts "<< thread #{Thread.current.object_id} result, #{overhead} sec overhead"
     end
-  end
-  threads.each{|t| t.join }
-end
+  end.each(&:join)
+end