[Date->Year] is an accessor for getting or setting the year field for a date object.
Getting uses no parameters and returns the year as an integer.
Setting requires an integer parameter, and supports the =, += and -= operators. Setting modifies the date object in-place, but does not return a value.
Date Object->year Date Object->year=Integer Date Object->year+=Integer Date Object->year-=Integer
Use the [Date->Year] method. The following example uses a single date object, then gets the year and returns its value.
Next we set the year field to a new value using the = operator, then set it again by adding 1 to the year using the += operator, and set it once more by subtracting 1 from the year using the -= operator. We return the result for each set operation.
local(d) = date('2011-02-21 08:00:00') #d->year + '<br>' #d->year=2015 #d + '<br>' #d->year+=1 #d + '<br>' #d->year-=1 #d
2011 2015-02-21 08:00:00 2016-02-21 08:00:00 2015-02-21 08:00:00
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