MasteringTime

P0w3rK!d has asked for the wisdom of the Perl Monks concerning the following question:

Replies are listed 'Best First'.
Re: MasteringTime by tadman (Prior) on Jul 09, 2001 at 22:20 UTC
The "easiest" way is to use localtime and/or Time::Local to convert from whatever date/time format you are using into the standard UNIX time_t format. This is a numerical value representing the number of seconds elapsed from January 1, 1970 GMT. Since it is just a number at this point, it is very easy to do math and comparisons on two values, even from different time-zones, or from the same time zone during Daylight Savings and Standard Time. As such, once you have converted your min and max to simple time_t format, it is a case of comparison like: `if ($the_time >= $min_time && $the_time <= $max_time) { # ... Do stuff? }` [download]	[reply] [d/l]
Re: MasteringTime by voyager (Friar) on Jul 09, 2001 at 22:33 UTC
This was recently answered Within A Date Time Range.	[reply]
Re: MasteringTime by lhoward (Vicar) on Jul 09, 2001 at 22:22 UTC
Convert to a common format (such as: seconds since Jan 1, 1970; or YYYYMMDDhhmmss) and compare. Time::ParseDate is very handy.	[reply]
Re: Re: MasteringTime by PrakashK (Pilgrim) on Jul 09, 2001 at 22:32 UTC
Or, use Date::Manip. It has more features and I like it better than Time::ParseDate, except that it is very big and heavy, so its an overkill if you are just using only one or two of its features. /prakash	[reply]
Re: MasteringTime by pltommyo (Initiate) on Jul 10, 2001 at 00:07 UTC
For a small number of comparisons, DateManip is nifty and has a lot of functionality. But I know when I tried it with about 50M compares to do it sort of took a long time :-) Tommy O	[reply]
Re: Re: MasteringTime by PrakashK (Pilgrim) on Jul 10, 2001 at 01:09 UTC
Did you try benchmarking it (Date::Manip) with your data set and compare it with the alternative (Time::ParseDate)? That would be interesting to know. /prakash	[reply]