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  3. Returning multiple variables in SKILL function

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Returning multiple variables in SKILL function

RFStuff
RFStuff over 12 years ago

 Dear All,

I want to a skill function that can return multiple values.

Like: (a,b)=skillfunction(x,y,z....)

Could anybody please tell how it can be done.

Kind Regards,

 

         

 

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  • Andrew Beckett
    Andrew Beckett over 12 years ago

    Returning multiple values as a list is a clean way to do this, but you can also use the destructuringBind function (new in IC615) to destructure the list contents and assign to variables (local to the scope of the destructuringBind function). This example uses the function that Lawrence wrote above to illustrate this:

    destructuringBind((a b) skillfunction(10 20 5)
      printf("a=%L b=%L\n" a b)
    )

    You can use this with other interesting list structures - for example, imagine that you have an instance id from the database - you can do:

    area=destructuringBind(((llx lly) (urx ury)) instId~>bBox
      ; compute the area of the bBox
      (urx-llx)*(ury-lly)
    )

    Cool, eh? (OK, so I'm easily impressed)

    Andrew.

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  • Andrew Beckett
    Andrew Beckett over 12 years ago

    Returning multiple values as a list is a clean way to do this, but you can also use the destructuringBind function (new in IC615) to destructure the list contents and assign to variables (local to the scope of the destructuringBind function). This example uses the function that Lawrence wrote above to illustrate this:

    destructuringBind((a b) skillfunction(10 20 5)
      printf("a=%L b=%L\n" a b)
    )

    You can use this with other interesting list structures - for example, imagine that you have an instance id from the database - you can do:

    area=destructuringBind(((llx lly) (urx ury)) instId~>bBox
      ; compute the area of the bBox
      (urx-llx)*(ury-lly)
    )

    Cool, eh? (OK, so I'm easily impressed)

    Andrew.

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