Question

If a train leaves less than an hour from now, I want its row in the schedule table to be highlighted red. Currently I’m doing the calculation like this:

if Time.zone.now + 1.hour > t[from_station]
  # do whatever
end

This works and kind of makes sense, but I wonder if there’s a clearer / more idiomatic way to express this (I could imagine coming back to this code in a few months and having to pause for a moment to mentally parse Time.zone.now + 1.hour).

Answer 1

You could use from_now:

if t[from_station] <  1.hour.from_now

When using Time.zone.now, you’ll have to specify it, so since is probably more readable (from_now is just an alias to since):

if t[from_station] < 1.hour.since(Time.zone.now)