reduce
Returns an aggregated value derived from applying the function parameter successively to each value in array in combination with the result of the previous application of the function.
reduce
Returns an aggregated value derived from applying the function parameter successively to each value in array in combination with the result of the previous application of the function.
Type: transform
Aliases
arrayReduce, reduce
Parameters
- input (array): The input array to reduce.
- expression (string): The JEXL expression to apply for each reduction step.
- initialValue (unknown): The initial value for the accumulator.
Returns
Type: unknown
The final accumulated value, or undefined if input is not an array.
Examples
reduce([1, 2, 3, 4], "accumulator + value", 0) // 10[1, 2, 3]|reduce("accumulator * value", 1) // 6reduce(["a", "b", "c"], "accumulator + value", "") // "abc"