LAMBDA structure
The calculation performed by the REDUCE function is determined by a customLAMBDA function.
Thebargument represents the value of each element in array.Calculationis the formula that generates the final accumulated result.
Note: REDUCE returns asingleresult.
See theMAP functionto process each element in an array individually and return an array of results.
REDUCE returns 15 as a final result after all elements have been processed.
Values in array are only added to the accumulator if they are even numbers.
The final result returned by REDUCE is 56.
LET Function
The Excel LET function lets you define named variables in a formula.
BYCOL can apply stock functions like SUM, COUNT, and AVERAGE or a custom LAMBDA function.
BYROW can apply stock functions like SUM, COUNT, and AVERAGE or a custom LAMBDA function.
All results are returned at the same time in a single array….
