date_bug

BUG: date() object calculations From: "Terry R. Schussler" <terry@trevimedia.com> Subject: <lingo-l> BUG: date() object calculations Be warned that there is a nasty bug in date objects related to math calculations. The bug is that if you pass a month value where: (month > 12) AND ((month mod 12) = 0), you will get an extra month tossed into the resulting date object value: moreMonths = 11 put date(2000, 12 + moreMonths, 20) -- date( 2001, 11, 20 ) moreMonths = 12 put date(2000, 12 + moreMonths, 20) -- date( 2002, 1, 20 ) Here's a snippet of workaround: moreMonths = 12 extraYears = moreMonths / 12 extraMonths = moreMonths mod 12 put date(2000 + extraYears, 12 + extraMonths, 20) -- date( 2001, 12, 20 )