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Article:
  The Objective-C Language
Subject:   Question
Date:   2001-05-10 14:41:38
From:   kcrawford
Response to: Question

I'm still confused. You put the arguments inside the name of the method?


Please show the same method written in Java so I can translate.


Would it be:


public void setXLocationyLocation(double x, double y){}

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Showing messages 1 through 4 of 4.

  • Michael Beam photo Question
    2001-05-11 06:13:54  Michael Beam | O'Reilly Author [View]

    that's right, you put arguments in the name of the method. Think of it as each argument having a label that is part of the method name. Your java line was correct, although i think you meant to put in a Y before the second location

    public void setXLocationYLocation(double x, double y) {}

    • Question
      2001-05-11 09:19:15  kcrawford [View]

      Thanks, that clears things up a bit.

      Would you call the method with multiple arguments the same way--with the arguments inside the method name?

      For example, would you call the method

      - (void)setXLocation:(double)x yLocation:(double)y

      like this

      [setXLocation:10 yLocation:20];
      • Michael Beam photo Question
        2001-05-11 12:00:20  Michael Beam | O'Reilly Author [View]

        Yeah, that's right, except your method call has no receiver, and it should. So it would have to be

        [anObject setXLocation:10 yLocation:20];

        when you want to invoke it.
        • Question
          2001-05-15 10:06:53  TheBum [View]

          Allow me to step in here with a related question if I may. Are the tags in the argument list of the declaration, e.g. yLocation, just for readability or do they provide a way of specifying arguments in any order?