S.I/Lisp/

LAST

=LAST(A1:A5)
-> A5
        

DEFINE(
    LAST,
    LAMBDA(
        range,
        IF(
            GREATERTHAN(
                COLUMNS(range),
                ROWS(range)),
            INDEX(
                range,
                1,
                COUNTA(range)),
            INDEX(
                range,
                COUNTA(range),
                1))))
        

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