hello!
i am trying to convert a number of seconds to a nicely formatted string
like this:
7683 seconds = 02:08:03
is there an easy way to accomplish this?
Well, assuming you know how to arithmetic, conversions, and string
concatenation (and if not, check out http://pine.fm/LearnToProgram/\),
all you're missing is how to pad with zeroes.
I do talk about the rjust method, but not that you can use it to pad
with things other than spaces:
2.to_s.rjust(5,'0')
This pads the string '2' (from 2.to_s) with the string '0'.
Another, fancier (or just more complicated? 
way:
irb(main):001:0> '%.5d' % 2
=> "00002"
Hope that helps,
Chris
···
On 12/14/05, `p <a@o.e> wrote:
hello!
i am trying to convert a number of seconds to a nicely formatted string
like this:7683 seconds = 02:08:03
As long as you dont go past 24 hours you can use the Time class:
irb(main):016:0> Time.at(7683).gmtime.strftime('%R:%S')
=> "02:08:03"
If you dont use gmtime, it will go based off your localtime, where the
epoch = the offset from GMT.
also by doing the arithmatic:
irb(main):023:0> time = 7683
=> 7683
irb(main):024:0> hours = time/3600.to_i
=> 2
irb(main):025:0> minutes = (time/60 - hours * 60).to_i
=> 8
irb(main):026:0> seconds = (time - (minutes * 60 + hours * 3600))
=> 3
irb(main):030:0> printf("%02d:%02d:%02d\n", hours, minutes, seconds)
02:08:03
=> nil
HTH
- Andy Delcambre
···
On 12/14/05, `p <a@o.e> wrote:
hello!
i am trying to convert a number of seconds to a nicely formatted string
like this:7683 seconds = 02:08:03
is there an easy way to accomplish this?
Andy Delcambre wrote:
As long as you dont go past 24 hours you can use the Time class:
irb(main):016:0> Time.at(7683).gmtime.strftime('%R:%S')
=> "02:08:03"
hey thanks! that's what i was looking for.
Next question: How do I get the number of seconds since Epoch?
SteveT
Steve Litt
slitt@troubleshooters.com
···
On Wednesday 14 December 2005 05:21 am, Andy Delcambre wrote:
As long as you dont go past 24 hours you can use the Time class:
irb(main):016:0> Time.at(7683).gmtime.strftime('%R:%S')
=> "02:08:03"
Steve Litt wrote:
···
On Wednesday 14 December 2005 05:21 am, Andy Delcambre wrote:
As long as you dont go past 24 hours you can use the Time class:
irb(main):016:0> Time.at(7683).gmtime.strftime('%R:%S')
=> "02:08:03"Next question: How do I get the number of seconds since Epoch?
time.to_i
http://www.ruby-doc.org/core/classes/Time.html#M000196
Cool! Thanks!
#!/usr/bin/ruby
b4 = Time.new
sleep(3)
after = Time.new
interval = after.to_i - b4.to_i
print "Started at ", b4.asctime, ", ended at ", after.asctime
print "\n Interval is ", interval.to_s, ".\n"
SteveT
Steve Litt
slitt@troubleshooters.com
···
On Wednesday 14 December 2005 08:32 am, `p wrote:
Steve Litt wrote:
> On Wednesday 14 December 2005 05:21 am, Andy Delcambre wrote:
>>As long as you dont go past 24 hours you can use the Time
>> class:
>>
>>irb(main):016:0> Time.at(7683).gmtime.strftime('%R:%S')
>>=> "02:08:03"
>
> Next question: How do I get the number of seconds since Epoch?time.to_i
class Time - RDoc Documentation
#!/usr/bin/ruby
b4 = Time.new
sleep(3)
after = Time.new
interval = after.to_i - b4.to_i
You can just subtract normally. Time knows what to do:
interval = after - b4
print "Started at ", b4.asctime, ", ended at ", after.asctime
print "\n Interval is ", interval.to_s, ".\n"
It's a good idea to get into the habit of using interpolation with Ruby. That let's Ruby take care of stringifying your values. We can also lose those \n characters:
puts "Started at #{b4} and ended at #{after}."
puts "Interval is #{interval}."
James Edward Gray II
···
On Dec 14, 2005, at 8:09 AM, Steve Litt wrote:
Confirmed! That's much cleaner. I've been looking for something like
that, and didn't want to kill a kitten by using printf()
Thanks
SteveT
Steve Litt
slitt@troubleshooters.com
···
On Wednesday 14 December 2005 09:21 am, James Edward Gray II wrote:
On Dec 14, 2005, at 8:09 AM, Steve Litt wrote:
> #!/usr/bin/ruby
> b4 = Time.new
> sleep(3)
> after = Time.new
> interval = after.to_i - b4.to_iYou can just subtract normally. Time knows what to do:
interval = after - b4
> print "Started at ", b4.asctime, ", ended at ", after.asctime
> print "\n Interval is ", interval.to_s, ".\n"It's a good idea to get into the habit of using interpolation
with Ruby. That let's Ruby take care of stringifying your
values. We can also lose those \n characters:puts "Started at #{b4} and ended at #{after}."
puts "Interval is #{interval}."
James Edward Gray II wrote:
It's a good idea to get into the habit of using interpolation with Ruby. That let's Ruby take care of stringifying your values. We can also lose those \n characters:
puts "Started at #{b4} and ended at #{after}."
puts "Interval is #{interval}."
It's also faster. Or at least, it was on my system when I ran some benchmarks.
mathew
···
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