%dw 2.0 import * from dw::core::Arrays output application/json var arr = [0,1,2,1] --- arr takeWhile $ <= 1
Selects elements from the array while the condition is met but stops the selection process when it reaches an element that fails to satisfy the condition.
To select all elements that meet the condition, use the
Introduced in DataWeave version 2.2.0.
The array of elements.
The condition (or expression) used to match an element in the array.
This example iterates over the elements in the array and selects only those
with an index that is
<= 1 and stops selecting elements when it reaches
one that is greater than
2. Notice that it does not select the second
2 that precedes it in the array. The function outputs the result into an array.