How-To Geek on MSN

How to use the LAMBDA helper functions in Microsoft Excel

Replace legacy formulas with MAP, BYROW, BYCOL, SCAN, and REDUCE to build secure, scalable, and automated spreadsheets.
How-To Geek on MSN

How to use the ISOMITTED function in Microsoft Excel

Build flexible Excel functions that automatically handle blanks, defaults, and overrides without messy nested IFs.