isLeapYear

isLeapYear(dateTime: DateTime): Boolean

Returns true if it receives a date for a leap year, false if not.

This version of leapYear acts on a DateTime type. Other versions act on the other date and time formats that DataWeave supports.

Parameters

Name Description

Name	Description
`dateTime`	The `DateTime` value to evaluate.

dateTime

The DateTime value to evaluate.

Example

This example indicates whether the input is a leap year.

Source

%dw 2.0
output application/json
---
[ isLeapYear(|2016-10-01T23:57:59|), isLeapYear(|2017-10-01T23:57:59|) ]

Output

[ true, false ]

isLeapYear(date: Date): Boolean

Returns true if the input Date is a leap year, 'false' if not.

Parameters

Name Description

Name	Description
`date`	The `Date` value to evaluate.

date

The Date value to evaluate.

Example

This example indicates whether the input is a leap year.

Source

%dw 2.0
output application/json
---
[ isLeapYear(|2016-10-01|), isLeapYear(|2017-10-01|) ]

Output

[ true, false ]

isLeapYear(datetime: LocalDateTime): Boolean

Returns true if the input local date-time is a leap year, 'false' if not.

Parameters

Name Description

Name	Description
`datetime`	A `LocalDateTime` value to evaluate.

datetime

A LocalDateTime value to evaluate.

Example

This example indicates whether the input is a leap year. It uses a map function to iterate through the array of its LocalDateTime values, applies the isLeapYear to those values, returning the results in an array.

Source

%dw 2.0
output application/json
---
[ |2016-10-01T23:57:59-03:00|, |2016-10-01T23:57:59Z| ] map isLeapYear($)

Output

[ true, true ]