From: Paul <tester.paul@...>
Date: 2011-06-07T22:35:29+09:00
Subject: Ruby 1.9 Time parse question

Hi there!

I have a ruby program that works as expected with 1.8.6 and 1.8.7. I
just discovered some failures with some functions when i ran it in
1.9.2.

The line that is breaking is:
> data_array.sort! { |a,b| Time.parse( b[1]+' '+b[2] ) <=> Time.parse( a[1]+' '+a[2] ) }

the data is an AoA and looks like:
data_array = [ ['1', '04/14/2011', '10:00 am', 'foo'],
  ['2', '04/18/2011', '03:30 pm', 'bar'],
  ['3', '04/18/2011', '11:15 am', 'baz']]

=> so I expect the elements to resort as: 1, 3, 2.

I want to use code that will work in both 1.8 and 1.9 using the
standard Ruby libraries for maximum portability.

In 1.8, the Time.parse method works with the 'mm/dd/yyyy' format,
while in 1.9 it is looking for 'dd/mm/yyyy'.

Is there a nice clean way to sort this array by date and time that
will work in both 1.8 and 1.9?

Paul.