Immediate (=) and Delayed (:=) Assignment

When an "=" is used in an assignment, the current value of the right-hand-side is  assigned to the left-hand-side.

This assignment may not be very useful if we wanted to use the "current time" as a variable some time later.

Instead, what we probably want is to have the right-hand-side evaluated when it is used. This is delayed assignment (:=)

Below, Pause is used in a compound statement to show that the value associated with theFlexibleDate is updating

Created with Wolfram Mathematica 6