LET can handle up to 126 name/value pairs, but only the first name/value pair is required.
The scope of each variable is the current LET function, and nested functions below.
The final result is a calculation or a variable previously calculated.
The result from LET always appears as thelast argumentto the function.
The names used in LET must begin with a letter and are not case-sensitive.
The LET function is often combined with theLAMBDA functionas a way to make a complex formula easier to use.
LAMBDA provides a way to name a formula and re-use it in a worksheet like a custom function.Example here.
Example #2
A chief benefit of the LET function is simplification by eliminating redundancy.
not Sat or Sun).
The result from WEEKDAY is the logic used to filter the original dates.
The LET function allows the SEQUENCE function to appear and be configured just once in the formula.
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….
