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SHL (shift-left) function

    SHL: func [
        "Shift-Left"
        s [series!]
        n [integer!]
        /with fill
    ][
        append
            copy skip s n
            array/initial
                min n (length? s)       ; we should really ASSERT n <= length? s
                either with [fill][none]
    ]
to REBOL series SHL shift-left shift by gregg.irwin on Jan 10, 2006
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