Skip to content
  • Home Home Home, current page.
  • Moments Moments Moments, current page.

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @
  • Language: English
    • Bahasa Indonesia
    • Bahasa Melayu
    • Català
    • Čeština
    • Dansk
    • Deutsch
    • English UK
    • Español
    • Filipino
    • Français
    • Hrvatski
    • Italiano
    • Magyar
    • Nederlands
    • Norsk
    • Polski
    • Português
    • Română
    • Slovenčina
    • Suomi
    • Svenska
    • Tiếng Việt
    • Türkçe
    • Ελληνικά
    • Български език
    • Русский
    • Српски
    • Українська мова
    • עִבְרִית
    • العربية
    • فارسی
    • मराठी
    • हिन्दी
    • বাংলা
    • ગુજરાતી
    • தமிழ்
    • ಕನ್ನಡ
    • ภาษาไทย
    • 한국어
    • 日本語
    • 简体中文
    • 繁體中文
  • Have an account? Log in
    Have an account?
    · Forgot password?
    New to Twitter?
    Sign up
propensive's profile
Jon Pretty
Jon Pretty
Jon Pretty
@propensive

Tweets

Jon Pretty

@propensive

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

Europe
propensive.com
Joined July 2010

Tweets

  • © 2021 Twitter
  • About
  • Help Center
  • Terms
  • Privacy policy
  • Cookies
  • Ads info
Dismiss
Previous
Next

Go to a person's profile

Saved searches

  • Remove
  • In this conversation
    Verified accountProtected Tweets @
Suggested users
  • Verified accountProtected Tweets @
  • Verified accountProtected Tweets @

Promote this Tweet

Block

  • Tweet with a location

    You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more

    Your lists

    Create a new list

    Under 100 characters, optional
    Privacy

    Copy link to Tweet

    Embed this Tweet

    Embed this Video

    Add this Tweet to your website by copying the code below. Learn more

    Add this video to your website by copying the code below. Learn more

    Hmm, there was a problem reaching the server.

    By embedding Twitter content in your website or app, you are agreeing to the Twitter Developer Agreement and Developer Policy.

    Preview

    Why you're seeing this ad

    Log in to Twitter

    · Forgot password?
    Don't have an account? Sign up »

    Sign up for Twitter

    Not on Twitter? Sign up, tune into the things you care about, and get updates as they happen.

    Sign up
    Have an account? Log in »

    Two-way (sending and receiving) short codes:

    Country Code For customers of
    United States 40404 (any)
    Canada 21212 (any)
    United Kingdom 86444 Vodafone, Orange, 3, O2
    Brazil 40404 Nextel, TIM
    Haiti 40404 Digicel, Voila
    Ireland 51210 Vodafone, O2
    India 53000 Bharti Airtel, Videocon, Reliance
    Indonesia 89887 AXIS, 3, Telkomsel, Indosat, XL Axiata
    Italy 4880804 Wind
    3424486444 Vodafone
    » See SMS short codes for other countries

    Confirmation

     

    Welcome home!

    This timeline is where you’ll spend most of your time, getting instant updates about what matters to you.

    Tweets not working for you?

    Hover over the profile pic and click the Following button to unfollow any account.

    Say a lot with a little

    When you see a Tweet you love, tap the heart — it lets the person who wrote it know you shared the love.

    Spread the word

    The fastest way to share someone else’s Tweet with your followers is with a Retweet. Tap the icon to send it instantly.

    Join the conversation

    Add your thoughts about any Tweet with a Reply. Find a topic you’re passionate about, and jump right in.

    Learn the latest

    Get instant insight into what people are talking about now.

    Get more of what you love

    Follow more accounts to get instant updates about topics you care about.

    Find what's happening

    See the latest conversations about any topic instantly.

    Never miss a Moment

    Catch up instantly on the best stories happening as they unfold.

    1. Jonathan Chayat‏ @JonathanChayat 21 Feb 2015

      @propensive Saw your type inference presentation - very nice! I was wondering if you could take a look at this issue http://tinyurl.com/hmap-so-question …

      1 reply 0 retweets 0 likes
    2. Jonathan Chayat‏ @JonathanChayat 21 Feb 2015
      Replying to @JonathanChayat

      @propensive This came up while developing http://github.com/SupersonicAds/marbles/ … which you may find interesting by itself.

      1 reply 0 retweets 0 likes
    3. Jonathan Chayat‏ @JonathanChayat 21 Feb 2015
      Replying to @JonathanChayat

      @propensive Any help would be greatly appreciated!

      1 reply 0 retweets 0 likes
    4. Jon Pretty‏ @propensive 21 Feb 2015
      Replying to @JonathanChayat

      @JonathanChayat Hi Jonathan! I got it working by redefining: def foo[T, S <: R[_ >: T]](x: T)(implicit ev: S) = 0 Does that help?

      2 replies 0 retweets 0 likes
    5. Jon Pretty‏ @propensive 21 Feb 2015
      Replying to @propensive

      @JonathanChayat They may well be legitimate type errors, though! Maybe def foo[T, S <: R[_ >: T <: A]] would help in that case. Not sure. :/

      1 reply 0 retweets 0 likes
    6. Jonathan Chayat‏ @JonathanChayat 21 Feb 2015
      Replying to @propensive

      @propensive First of all, Thanks! This is progress - however, now implicit search stops looking at companion objects for evidence.

      2 replies 0 retweets 0 likes
    7. Jonathan Chayat‏ @JonathanChayat 21 Feb 2015
      Replying to @JonathanChayat

      @propensive I've revised my question on SO so that the evidence is in the companion of A (which is more realistic).

      1 reply 0 retweets 0 likes
    8. Jonathan Chayat‏ @JonathanChayat 21 Feb 2015
      Replying to @JonathanChayat

      @propensive Do you understand why in def foo[T, TT >: T](x : T)(implicit ev: R[TT]) TT gets inferred the same as T?

      1 reply 0 retweets 0 likes
    9. Jon Pretty‏ @propensive 21 Feb 2015
      Replying to @JonathanChayat

      @JonathanChayat I'd guess because there's a unique possible `ev`, and the type is inferred from the resolved implicit. Sound plausible?

      1 reply 0 retweets 0 likes
    10. Jonathan Chayat‏ @JonathanChayat 21 Feb 2015
      Replying to @propensive

      @propensive I don't think so. It seems the type gets inferred before implicit search (making TT as specific as possible - meaning T)

      2 replies 0 retweets 0 likes
      Jon Pretty‏ @propensive 21 Feb 2015
      Replying to @JonathanChayat

      @JonathanChayat Hmm... If TT isn't mentioned in the first parameter block, it should be completely unconstrained in the second block.

      7:13 AM - 21 Feb 2015
      2 replies 0 retweets 0 likes
        1. New conversation
        1. Jonathan Chayat‏ @JonathanChayat 21 Feb 2015
          Replying to @propensive

          @propensive That is why it is so surprising...

          1 reply 0 retweets 0 likes
        2. Jon Pretty‏ @propensive 21 Feb 2015
          Replying to @JonathanChayat

          @JonathanChayat Hmmm... Have you tried -Xlog-implicits? I've had mixed success using that for diagnosis...

          2 replies 0 retweets 0 likes
        3. Show replies
        2. New conversation
        1. Jonathan Chayat‏ @JonathanChayat 21 Feb 2015
          Replying to @propensive

          @propensive Seems like a compiler bug to me. I've opened an issue https://issues.scala-lang.org/browse/SI-9169 

          3 replies 0 retweets 0 likes
        2. Jonathan Chayat‏ @JonathanChayat 21 Feb 2015
          Replying to @JonathanChayat

          @propensive Again, thanks for your help

          0 replies 0 retweets 0 likes
          3. End of conversation

      Loading seems to be taking a while.

      Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.

        Promoted Tweet

        false

        • © 2021 Twitter
        • About
        • Help Center
        • Terms
        • Privacy policy
        • Cookies
        • Ads info