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Re: What does keyword 'this' refer to in the following code?

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From	Lars Enderin <lars.enderin@telia.com>
Newsgroups	comp.lang.java.programmer
Subject	Re: What does keyword 'this' refer to in the following code?
Date	Wed, 13 Apr 2016 10:58:06 +0200
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2016-04-13 05:03 skrev  cdalten@gmail.com:
> I have another question. What's the significance of map.addMarker().title().snippet().position()?
> 
> Why not just do something like
> map.addMarker()
> map.title()
> map.snippet()
> map.position()
> ?

It's a shorthand, assuming that each method in the chain returns *this*.
If you look at the source for java.lang.StringBuilder, for example,
you'll find methods like

    public StringBuilder append(int i) {
        IntegralToString.appendInt(this, i);
        return this;
    }
and
    public StringBuilder append(double d) {
        RealToString.getInstance().appendDouble(this, d);
        return this;
    }

so you can write statements like
StringBuilder sb = new StringBuilder().append("Pi = ").append(Math.PI);

-- 
Lars Enderin

Thread

What does keyword 'this' refer to in the following code? cdalten@gmail.com - 2016-04-11 21:44 -0700
  Re: What does keyword 'this' refer to in the following code? Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> - 2016-04-12 12:16 +0300
  Re: What does keyword 'this' refer to in the following code? Eric Douglas <e.d.programmer@gmail.com> - 2016-04-12 04:57 -0700
    Re: What does keyword 'this' refer to in the following code? cdalten@gmail.com - 2016-04-12 08:28 -0700
      Re: What does keyword 'this' refer to in the following code? Lew <lewbloch@gmail.com> - 2016-04-12 14:03 -0700
        Re: What does keyword 'this' refer to in the following code? cdalten@gmail.com - 2016-04-12 18:23 -0700
          Re: What does keyword 'this' refer to in the following code? Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> - 2016-04-13 11:39 +0300
          Re: What does keyword 'this' refer to in the following code? Eric Douglas <e.d.programmer@gmail.com> - 2016-04-13 05:07 -0700
  Re: What does keyword 'this' refer to in the following code? Jeff Higgins <jeff@invalid.invalid> - 2016-04-12 22:00 +0000
    Re: What does keyword 'this' refer to in the following code? cdalten@gmail.com - 2016-04-12 20:03 -0700
      Re: What does keyword 'this' refer to in the following code? cdalten@gmail.com - 2016-04-12 21:01 -0700
      Re: What does keyword 'this' refer to in the following code? Lars Enderin <lars.enderin@telia.com> - 2016-04-13 10:58 +0200
      Re: What does keyword 'this' refer to in the following code? Eric Douglas <e.d.programmer@gmail.com> - 2016-04-13 05:12 -0700

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