You can define your own DataWeave functions using the fun declaration in the header of a DataWeave script.

We create functions in the declarations section of the script using the fun keyword. This associates a set of functionality…

DataWeave provides multiple ways to create functions. Just like we have named functions, we have functions without names, called lambdas.

In other words, lambdas become useful when you want to pass functions as arguments to other functions, or return a…

This type of notation is referred to as infix since the operator is in between the two operands that it…

For functions that DataWeave provides, you can represent the first, second, and third arguments of the passed lambda as $,…

DataWeave 2.0 makes it easier to define an array with a range (" to ").

This function can be applied to an array. It iterates the array and matches the values with the expression. The…

Iterates over items in an array and outputs the results into a new array.

This function is useful for when you need to remove duplicate items from an Array.

This function is useful for grouping together items in an array based on some value that is generated from each…

Reduce function is used to do any computation while iterating on an array, so the computation result is not lost…