REDUCE

REDUCE([initial_value], array, lambda(accumulator, value))

Returns the total value after reducing an array by applying a LAMBDA function.

[initial_value]	Sets the starting value for the accumulator.
array	An array to be reduced.
lambda	A nested LAMBDA function that takes two parameters.
accumulator	The value totalled up and returned as the final result.
value	The calculation applied to each element in the array

REMARKS

* Added in Microsoft 365.
* This function uses the LAMBDA function.
* This LAMBDA function must take two parameters.
* This LAMBDA function must have parameter names that do not include numbers.
* You can use the MAP function to return an identical array by applying a LAMBDA function to do some processing.
* You can use the SCAN function to return an identical array by applying a LAMBDA function to return some intermediate calculation values.
* This function was released in July 2021.
* For the Microsoft documentation refer to support.microsoft.com

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