map() :

The map is a function in Dataweave which iterates over the items in an array and outputs them into a new array.

map(item,index) :

item (default $): it represents the element in the input array list.

index (default $$) : it represents the position of the element the input array list.

map function is only applicable for an arrays

It basically accepts input as a list of items in an array and transforms the items in the array in order to form a new array as an output.

Example 1:

multiplying item with it's index:

Example 2:

iterating with default symbols ($,$$)

ex1 :

ex2:

Example 3 :

transforming employee data:
condition 1: employee id as key.
condition 2: value is combination of first and last name.

Note : Whenever we are applying map function other than an arrays we get the exception

Example 4:

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