Re: Better RecursiveTask Example

"Dr Heinz M. Kabutz via Concurrency-interest" <[email protected]> Thu, 25 Nov 2021 06:56:51 +0200
Newsgroups gmane.comp.java.jsr.166-concurrency
Organization JavaSpecialists.eu
Message-ID <[email protected]> 
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    <div class="moz-cite-prefix">On 2021/11/25 00:07, Tim Peierls via
      Concurrency-interest wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CA+F8eeSz-YaVQfGjWvEp4P5NKB6Lf4qDR6-0LGniCBO7M39qBA@mail.gmail.com">
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          <p style="margin:0px 0px 1.2em!important">On Wed, Nov 24, 2021
            at 4:14 PM Remi Forax via Concurrency-interest <a
              href="http://mailto:[email protected]"
              moz-do-not-send="true">[email protected]</a>
            wrote:</p>
          <blockquote style="margin:1.2em 0px;border-left:4px solid
            rgb(221,221,221);padding:0px
            1em;color:rgb(119,119,119);quotes:none">
            <p style="margin:0px 0px 1.2em!important">We can also use
              ‘var’, every declarations are aligned but it is perhaps
              harder to understand</p>
          </blockquote>
          <pre style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;font-size:1em;line-height:1.2em;margin:1.2em 0px"><code style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;margin:0px 0.15em;padding:0px 0.3em;white-space:pre-wrap;border:1px solid rgb(234,234,234);background-color:rgb(248,248,248);border-radius:3px;display:inline;white-space:pre;overflow:auto;border-radius:3px;border:1px solid rgb(204,204,204);padding:0.5em 0.7em;display:block!important">*   protected BigInteger compute() {
*     if (from == to) {               // base case
*       return (from == 0) ? BigInteger.ONE : BigInteger.valueOf(from);
*     }
*     var mid = (from + to) &gt;&gt;&gt; 1;    // split in half
*     var leftTask = new FactorialTask(from, mid).fork();
*     var rightTask = new FactorialTask(mid + 1, to);
*     var right = rightTask.invoke(); // perform half the work locally
*     var left = leftTask.join();
*     return left.multiply(right);
*   }
</code></pre>
          <p style="margin:0px 0px 1.2em!important">It is <b>definitely
            </b>harder to understand. My brain is wired to look on the
            left for types. Lines that are all lower-case initial before
            an <code style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;margin:0px 0.15em;padding:0px 0.3em;white-space:pre-wrap;border:1px solid rgb(234,234,234);background-color:rgb(248,248,248);border-radius:3px;display:inline">=</code>
            don’t look like sources of type information to me.</p>
        </div>
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    </blockquote>
    <p>I would second that.</p>
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