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How to get the tail of list .

marbs

Hi All,

How to get the tail of this list using SKILL ?

X = (((-9.1 13.6)

        (-7.4 13.6)

        (-7.4 12.6)

        (-5.5 12.6)

        (-5.5 13.6)

        (-3.8 13.6)

    )

)

I use IC5141 .

Best Regards,

Marben

Parents

  • Marben,

    If using car(last(cdr(X))) gives you the right answer, then the list cannot look like what you said - it must have one fewer set of parentheses than you showed. Also, the cdr() would be unnecessary - it would be sufficient to do car(last(X)). So my expectation is that your list looks like this:

    X='((-9.1 13.6)
            (-7.4 13.6)
            (-7.4 12.6)
            (-5.5 12.6)
            (-5.5 13.6)
            (-3.8 13.6)
        )

    car(last(X)) => (-3.8 13.6)

    If the list is as you showed, then it would definitely be car(last(car(X))) .

    Kind Regards,

    Andrew.

Reply

  • Marben,

    If using car(last(cdr(X))) gives you the right answer, then the list cannot look like what you said - it must have one fewer set of parentheses than you showed. Also, the cdr() would be unnecessary - it would be sufficient to do car(last(X)). So my expectation is that your list looks like this:

    X='((-9.1 13.6)
            (-7.4 13.6)
            (-7.4 12.6)
            (-5.5 12.6)
            (-5.5 13.6)
            (-3.8 13.6)
        )

    car(last(X)) => (-3.8 13.6)

    If the list is as you showed, then it would definitely be car(last(car(X))) .

    Kind Regards,

    Andrew.

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