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propensive's profile
Jon Pretty
Jon Pretty
Jon Pretty
@propensive

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Jon Pretty

@propensive

Supporting Scala through professional training and open-source software. Responsible for Magnolia, Fury, Scala World and Functional Africa.

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propensive.com
Joined July 2010

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    3. Andriy Plokhotnyuk‏ @aplokhotnyuk 9 Jul 2018

      It depends... jsoniter-scala is able to throw and catch up to 9M exceptions per second in a single thread (Core i7 7700K). Please, see MissingRequiredFieldBenchmark results: http://jmh.morethan.io/?source=https://plokhotnyuk.github.io/jsoniter-scala/oraclejdk8.json …

      1 reply 0 retweets 2 likes
    4. Jon Pretty‏ @propensive 9 Jul 2018
      Replying to @aplokhotnyuk @fommil and

      How many instances of Left/Right can it create and garbage-collect per second? Given the exceptions are likely to be... exceptional... my instinct would be that the exception-based approach would be much faster.

      1 reply 0 retweets 0 likes
    5. This Tweet is unavailable.
    6. Andriy Plokhotnyuk‏ @aplokhotnyuk 9 Jul 2018

      Please show me a parser which is able to deserialize and bind a realistic message in less than 111ns to be competitive with no stack trace exception throwing and catching. But for general case you are right, exception should be exceptional: https://shipilev.net/blog/2014/exceptional-performance/ …

      0 replies 0 retweets 0 likes
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    8. Jon Pretty‏ @propensive 9 Jul 2018

      If the exceptions are all safely caught internally, isn't this just a different encoding of a total function, with better performance? ;)

      0 replies 0 retweets 0 likes
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    10. Jorge Vicente Cantero‏ @jvican 9 Jul 2018

      It can be total at a higher level (handled by the user) if the code needs to be performant. Letting the JVM throw exceptions can be much faster than doing error handling yourself.

      1 reply 0 retweets 2 likes
      Jon Pretty‏ @propensive 9 Jul 2018
      Replying to @jvican @fommil and

      Yeah, this is exactly my point. :)

      5:28 AM - 9 Jul 2018
      1 reply 0 retweets 0 likes
        1. Andriy Plokhotnyuk‏ @aplokhotnyuk 9 Jul 2018
          Replying to @propensive @jvican and

          Btw, Scalaz community is going to write a new JSON parser: https://scalaz.mobilize.io/main/groups/24834/lounge … Which approach they will follow? Would you bet?

          0 replies 0 retweets 1 like
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        2. Jorge Vicente Cantero‏ @jvican 10 Jul 2018
          Replying to @jdegoes @propensive and

          Link? It could be possible for frequent exceptions, but the point of exceptions is that they are exceptional. EOF, IOOBE, numeric exceptions and many others are not the norm.

          1 reply 0 retweets 1 like
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