How to get last day of the month in Cocoa?

Question

I would like to make a function that input a NSDate and output the last date of the month. Do you guys know how to do it in Cocoa?

score 9 · Answer 1 · edited May 23 '17 at 11:44

9

It's the day before the first day of the next month. Add a month, set the day to 1, subtract a day. For setting the day to 1, you'll find it easier to go via NSCalendar. See here for details.

edited May 23 '17 at 11:44

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answered Dec 03 '10 at 11:22

Marcelo Cantos

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+1 The universal answer. Always right. Always works. Language, platform and framework agnostic. – S.Lott Dec 03 '10 at 11:24

score 2 · Answer 2 · answered Dec 03 '10 at 11:42

If you're doing date computations, you should always use NSCalendar and related classes, because that's the only way to be forward-compatible with changes to calendars, support for non-"standard" calendars, and so on.

Read the Date and Time Programming Guide section on Calendrical Calculations to get an idea of how these classes work together.

How to get last day of the month in Cocoa?

2 Answers2