im pretty new to Ruby and i tried to find out how to calculate the date
for the first monday of the first week of the month (i.e. this would be
2007-01-29 for Feb. 2007)
My approach is to get the weekday of the first day of the month and
calculate back from there. By getting the weekday i can tell how far to
calculate back (if necessary at all). If i’m calcualating back from
janurary, i also have to switch back the year.
So this is what i came out with:
year = 2007 month = 2 # get the weekday of the first day of the month first_wd = Date.new(year, month, 1).wday # if weekday is sunday if first_wd == 0 date_modifier = - 6 #if weekday is monday elsif first_wd == 1 date_modifier = 1 # any other day else date_modifier = - ( first_wd - 1 ) end #if i have to count back, swith month (and year) back if date_modifier < 0 if month > 1 month -= 1 else month = 12 year -= 1 end end # get date with calculated modifier date_start = Date.new(year, month, date_modifier )
Ok, this works, but it seems pretty complicated to me. Is there a
smarter (and more readable) way to do this? As far as i know Ruby right
now, it’s pretty unusual if an “easy” problem like this needs more than
three lines of code ;).
Thx for any help