Ruby – Get current system time in milliseconds

ruby

In Ruby, what is the right way to get the current system time since epoch(1970) in milliseconds?

I tried Time.now.to_i , it seems not the result I want. I need the result shows milliseconds and with long type, not float or double.

Best Answer

(Time.now.to_f * 1000).to_i

Time.now.to_f shows you the time including decimal numbers. To get number of miliseconds just multiply the time by 1000.

Related Solutions

Ruby – the “right” way to iterate through an array in Ruby

This will iterate through all the elements:

array = [1, 2, 3, 4, 5, 6]
array.each { |x| puts x }

Prints:

This will iterate through all the elements giving you the value and the index:

array = ["A", "B", "C"]
array.each_with_index {|val, index| puts "#{val} => #{index}" }

Prints:

A => 0
B => 1
C => 2

I'm not quite sure from your question which one you are looking for.

Ruby-on-rails – How to get the current absolute URL in Ruby on Rails

For Rails 3.2 or Rails 4+

You should use request.original_url to get the current URL. Source code on current repo found here.

This method is documented at original_url method, but if you're curious, the implementation is:

def original_url
  base_url + original_fullpath
end

For Rails 3:

You can write "#{request.protocol}#{request.host_with_port}#{request.fullpath}", since request.url is now deprecated.

For Rails 2:

You can write request.url instead of request.request_uri. This combines the protocol (usually http://) with the host, and request_uri to give you the full address.