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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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    1. Jon Pretty‏ @propensive 2 Dec 2014

      Can Scala macros access the expected return type of an application, e.g. getting `Foo` given val x: Foo = myMacroApplication /cc @xeno_by

      1 reply 0 retweets 0 likes
    2. Eugene Burmako‏ @eugene_burmako 3 Dec 2014
      Replying to @propensive

      @propensive not at the moment. What use case do you have in mind?

      2 replies 0 retweets 0 likes
    3. Jon Pretty‏ @propensive 3 Dec 2014
      Replying to @eugene_burmako

      @xeno_by Just a whimsical experiment! I'd like to be able to write `val x: Foo = instantiate` and have it call Foo's constructor.

      2 replies 0 retweets 0 likes
    4. This Tweet is unavailable.
    5. Jon Pretty‏ @propensive 3 Dec 2014
      Replying to @jco

      @jco No, unfortunately that doesn't work. Expected return types don't influence implicits. :( @xeno_by

      1 reply 0 retweets 0 likes
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    7. Jon Pretty‏ @propensive 3 Dec 2014
      Replying to @jco

      @jco Generic parameters do seem to be inferred. Just not the entire type... @xeno_by

      1 reply 0 retweets 0 likes
    8. This Tweet is unavailable.
      Jon Pretty‏ @propensive 3 Dec 2014
      Replying to @jco

      @jco Here's a rough gist of what I tried. I didn't even involve macros. https://gist.github.com/propensive/624df1423c27bee56535 … @xeno_by

      5:24 AM - 3 Dec 2014
      0 replies 0 retweets 1 like

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