Feature #10544: Time#to_i(:millisecond)

• Status: Rejected
• Assignee: -
• Target version: -

[Glass_saga (Masaki Matsushita)]

Currently, we have to take an indirect way to get unix_time in milliseconds.

time = Time.now
milliseconds = (time.to_i * 1000) + (time.usec / 1000.0).round

I think it would be convenient if Time#to_i accepts unit parameter like following.

time = Time.now
milliseconds = time.to_i(:millisecond)

[nobu (Nobuyoshi Nakada)]

• Description updated (diff)

Do you need unix time in milliseconds so often?

[Glass_saga (Masaki Matsushita)]

I want this feature to give unix time to other languages like JavaScript.
Some languages expect unix time in milliseconds.

[david_macmahon (David MacMahon)]

How about a more general Time#to_i(scale=1)?

Examples:

• Passing 1 for scale (or passing nothing) would return seconds.
• Passing 1000 for scale would return milliseconds.
• Passing 1/60r for scale would return minutes.

Masaki Matsushita wrote:

milliseconds = (time.to_i * 1000) + (time.usec / 1000.0).round

IMHO, it is generally preferable to avoid time travel by truncating to the beginning of the "present" millisecond rather than possibly rounding to the beginning of the "future" millisecond.

[akr (Akira Tanaka)]

• Status changed from Open to Rejected

We have Process.clock_gettime since Ruby 2.1.

% ruby -e 'p Process.clock_gettime(Process::CLOCK_REALTIME, :millisecond)'    
1478362786099

This can be used as Time.now.to_i(:millisecond) which is shown in this issue.

If it is not enough, please reopen.