How to Process Items in an Array in Parallel using Ruby (and open-uri)

Question

I am wondering how i can go about opening multiple concurrent connections using open-uri? i THINK I need to use threading or fibers some how but i\'m not sure.

Exampl

Answer 1

I hope this gives you an idea:

def do_something(url, secs)
    sleep secs #just to see a difference
    puts "Done with: #{url}"
end

threads = []
urls_ary = ['url1', 'url2', 'url3']

urls_ary.each_with_index do |url, i|
    threads << Thread.new{ do_something(url, i+1) }
    puts "Out of loop #{i+1}"
end
threads.each{|t| t.join}

Perhaps creating a method for Array like:

class Array
    def thread_each(&block)
        inject([]){|threads,e| threads << Thread.new{yield(e)}}.each{|t| t.join}
    end
end

[1, 2, 3].thread_each do |i|
    sleep 4-i #so first one ends later
    puts "Done with #{i}"
end