S.I/Lisp/

BEGINSWITH?

=BEGINSWITH?("Spreadsheet", "t")
-> FALSE

=BEGINSWITH?("Sophroniscus is a sculptor.", "Sophroniscus")
-> TRUE
        

DEFINE(
    BEGINSWITH?,
    LAMBDA(
        text,
        beginning,
        [case_insensitive?],
        REGEXTEST(
            text,
            FORMAT("^{1}", beginning),
            DEFAULT(case_insensitive?, YES))))
        

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