isLeapYear

DataWeave 2.2 is compatible and bundled with Mule 4.2. This version of Mule reached its End of Life on May 2, 2023, when Extended Support ended.

Deployments of new applications to CloudHub that use this version of Mule are no longer allowed. Only in-place updates to applications are permitted.

MuleSoft recommends that you upgrade to the latest version of Mule 4 that is in Standard Support so that your applications run with the latest fixes and security enhancements.

isLeapYear(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): 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(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 ]