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

Replace legacy formulas with MAP, BYROW, BYCOL, SCAN, and REDUCE to build secure, scalable, and automated spreadsheets.

Sometimes, the YEAR function returns the correct value, but Excel displays an unexpected year, such as 1900 or 1905. This occurs when the cell containing the YEAR formula is formatted as a Date ...