From: Lloyd Zusman <ljz@...>
Date: 2005-11-14T02:21:58+09:00
Subject: Re: Converting between Time and DateTime

Daniel Schierbeck <daniel.schierbeck@gmail.com> writes:

> Lloyd Zusman wrote:
>> Daniel Schierbeck <daniel.schierbeck@gmail.com> writes:
>>
>>> [ ... ]
>>>
>>> I think this would be more Rubyish:
>>>
>>>   class DateTime
>>>     def to_time
>>>       Time.mktime(year, mon, day, hour, min, sec)
>>>     end
>>>   end
>>>
>>>   class Time
>>>     def to_datetime
>>>       DateTime.civil(year, mon, day, hour, min, sec)
>>>     end
>>>   end
>>>
>>> I haven't tested it, but it should work.
>> Thanks.  Is this considered more ruby-ish because of the non-camel-case
>> of the method names? ... or because of the to_* methods instead of the
>> from* constructors? ... or both?
>>
>
> Both. It also allows you to do something like this:
>
>   def some_time_method(time)
>     time = time.to_time  # now we know we have a Time object
>   end
>
>   some_time_method(DateTime.new(...))
>
> That way you can use a DateTime object instead of a Time object and have 
> it automatically converted. Otherwise, you'd have to do this:
>
>   some_time_method(Time.from_datetime(DateTime.new(...)))

Got it.  Thanks!

So now, all we need is to have a few to_* conversion methods added to
the standard Time, DateTime, and Date classes so that we all don't have
to keep re-inventing this. :)


-- 
 Lloyd Zusman
 ljz@asfast.com
 God bless you.