From: Daniel Hobe <hobe@...>
Date: 2005-12-15T06:22:11+09:00
Subject: Re: Time.utc! and Time.localtime!

I disagree that they are not really ! methods.  It changes the offset
from utc, which I'm assuming is in a instance var or something. 
Because you are changing the receiver, I think it a solid candidate
for changing to end in !

A little background on the reason it bit me: I was displaying the time
to the user (in puts time.localtime) and then thought I was saving the
utc times to MySQL which doesn't save timezone. This broke when I went
to read it out again and assumed everything was UTC.

I suppose it could be put down to me not RTFM, but I think the
behavior is surprising enough to warrant a change.

On 12/14/05, Eric Hodel <drbrain@segment7.net> wrote:
> On Dec 14, 2005, at 11:36 AM, Daniel Hobe wrote:
>
> > Writing a script yesterday I found out, much to my surprise, that the
> > Time instance methods utc and localtime modify the receiver and don't
> > end in !.  Is this something that could change in 1.9?  It seems very
> > un-rubyish.
>
> I consider it not quite a ! method because it only changes the
> representation of the time, not the time itself.
>
> $ ruby -e 't1 = Time.now; t2 = t1.dup.gmtime; puts t1 == t2, t1, t2'
> true
> Wed Dec 14 12:23:21 PST 2005
> Wed Dec 14 20:23:21 UTC 2005
>
> --
> Eric Hodel - drbrain@segment7.net - http://segment7.net
> This implementation is HODEL-HASH-9600 compliant
>
> http://trackmap.robotcoop.com
>
>
>
>


--
Daniel Hobe <hobe@gmail.com>
After the darkness of her speech; I go bewildered in a mist of prophecies.