Doing DateTime Arithmetic : Date Calculation « Date « Ruby

1.	ActiveRecord
2.	Array
3.	CGI
4.	Class
5.	Collections
6.	Database
7.	Date
8.	Design Patterns
9.	Development
10.	File Directory
11.	GUI
12.	Hash
13.	Language Basics
14.	Method
15.	Network
16.	Number
17.	Rails
18.	Range
19.	Reflection
20.	Statement
21.	String
22.	Threads
23.	Time
24.	Tk
25.	Unit Test
26.	Windows Platform
27.	XML

Ruby » Date » Date Calculation

Doing DateTime Arithmetic





require 'date'



puts y2k_dt = DateTime.new(2000, 1, 1)

puts (y2k_dt + 1).to_s                  # => "2000-01-02T00:00:00Z"

puts (y2k_dt - 1).to_s                  # => "1999-12-31T00:00:00Z"

puts (y2k_dt + 0.5).to_s                # => "2000-01-01T12:00:00Z"

puts (y2k_dt + 365).to_s                # => "2000-12-31T00:00:00Z"

Related examples in the same category

1.	Subtract 61 days from a date:
2.	Add and subtract six months using the >> and << methods.
3.	Doing Date Arithmetic
4.	Minus one DateTime from another
5.	Move DateTime
6.	leap year day
7.	Counting the Days Since an Arbitrary Date
8.	advent calendar
9.	Minus DateTime by day
10.	Remaining days

java2s.com | Contact Us | Privacy Policy

All other trademarks are property of their respective owners.