(Lianja) Date/Time Expires Within N Seconds/Minutes/Hours/Days

Demonstrates the how to tell if a date/time is within N seconds, minutes, hours, or days of the current system time.

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loDt = createobject("CkDateTime")

// Set to the current system date/time.
loDt.SetFromCurrentSystemTime()
? "Now: " + loDt.GetAsTimestamp(.T.)

// Add 10 minutes, making the date 10 minutes in the future.
loDt.AddSeconds(600)
? "10 minutes from now: " + loDt.GetAsTimestamp(.T.)

// Is the date/time within 10 seconds of expiration (i.e. within 10 seconds of now)?
b = loDt.ExpiresWithin(10,"seconds")
? "Expires within 10 seconds: " + str(b)

// Does the date/time expire within 5 minutes?
b = loDt.ExpiresWithin(5,"minutes")
? "Expires within 5 minutes: " + str(b)

// Does the date/time expire within 15 minutes?
b = loDt.ExpiresWithin(15,"minutes")
? "Expires within 15 minutes: " + str(b)

// Does the date/time expire within 1 hour?
b = loDt.ExpiresWithin(1,"hour")
? "Expires within 1 hour: " + str(b)

// Does the date/time expire within 1 day?
b = loDt.ExpiresWithin(1,"day")
? "Expires within 1 day: " + str(b)

// Output:

// 	Now: 2017-05-05T23:48:00-0500
// 	10 minutes from now: 2017-05-05T23:58:00-0500
// 	Expires within 10 seconds: False
// 	Expires within 5 minutes: False
// 	Expires within 15 minutes: True
// 	Expires within 1 hour: True
// 	Expires within 1 day: True


release loDt