On Wed, 25 Feb 2009, I wrote: > $y + ±5 # same as ($y - 5) | ($y + 5) (also same as $y - ±5) > $y ± 5 # same as ($y - 5) .. ($y + 5)
A further question: should such ranges be [closed], (open) or [half-open)?
I would argue for half-open because then exactly one of a set of consecutive
ranges will match; back to the original question, I'd only expect one match
from:
$time ~~ $date-yesterday
$time ~~ $date-today
$time ~~ $date-tomorrow
even if $time falls precisely on midnight.
-Martin
