Matt Warren

@matthewwarren

Christian, husband & father. Also a C# Dev who loves finding and fixing performance issues, Microsoft MVP, contributor to , works

Vrijeme pridruživanja: svibanj 2008.

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  1. Prikvačeni tweet
    28. lis 2014.
    Odgovor korisniku/ci

    . yeah it's annoying to be the least famous C# dev called Matt Warren :-)

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  2. proslijedio/la je Tweet
    prije 22 sata

    haven't really posted anything for a while. just wrote a blog entry about GC handles at

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  3. prije 9 sati

    Next time you set a breakpoint and hit F5, remember that there's a *lot* of work the Debugger and CLR do to make that happen!

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  4. proslijedio/la je Tweet
    26. sij

    I am pushing the "Polygons of Another World" series further. Here is the Game Boy Advance version: . A great machine, beautifully documented by fans. What a pleasure.

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  5. proslijedio/la je Tweet
    prije 11 sati
    Odgovor korisnicima
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  6. proslijedio/la je Tweet
    prije 13 sati

    Dear MVPs, in which b̵a̵r̵ hotel are you staying for the MVP Summit?

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  7. 5. velj

    This is a brilliant presentation ‘The Ultimate Game Boy Talk‘ An interesting subject and it’s so well done, the slides and explanations are amazing!

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  8. proslijedio/la je Tweet
    5. velj
    Prikaži ovu nit
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  9. proslijedio/la je Tweet
    3. velj

    Periodic Reminder: When debugging, you must first accept that something you believe is true is not true. If everything you believed about this system were true, it would work. It doesn't, so you're wrong about something. This is a surprisingly common stumbling block for devs.

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  10. proslijedio/la je Tweet

    We have great news. We will be returning in February 2020! For the full statement, please visit

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  11. proslijedio/la je Tweet
    4. velj

    Have anybody been successful in using `ICorDebug` to debug one .NET Core app from another .NET Core app? By "debug" I mean basic functionality like enumerate threads, walk a call stack, view parameter values of the methods on the stack, etc.

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  12. proslijedio/la je Tweet
    1. pro 2018.

    Periodic reminder: Usually, the important part in "We have rewritten our app from lang X to lang Y, and got tremendous performance boosts!" is "rewritten", not "from lang X" or "to lang Y", for any mature enough X and Y.

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  13. proslijedio/la je Tweet
    3. velj

    So this Saturday sees my 10 year anniversary at Microsoft. A retrospective.

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  14. proslijedio/la je Tweet
    3. velj

    CoreRT now makes it possible to build self-contained C# apps that are smaller than 1 MB (without much hacking). It's a journey and we're not at the end of it. This pull request has some details (and instructions, if you dare to try!):

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  15. proslijedio/la je Tweet
    2. velj

    Oooh now has a flamegraph view in Timeline viewer 😍

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  16. proslijedio/la je Tweet
    1. velj

    Mostly useless but interesting trick: .NET Core knows how to inline structs and how to optimize them eg. by using SIMD registers. While case below is really a microoptimization, first method is ~20% faster than the second.

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  17. proslijedio/la je Tweet
    31. sij

    .NET Evening in Prague on Wed Feb 5 at 6pm - with some new content from Skype and Teams teams 🤩 Don't miss out, join us in person or online, we will be live-streaming

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  18. proslijedio/la je Tweet
    1. velj

    The 'shownotes' for our event have now been published! A big thanks to and for joining us for two awesome talks! The notes include a link to the photos, and speaker slides and links. Videos will be added soon.

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  19. proslijedio/la je Tweet
    31. sij
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  20. proslijedio/la je Tweet
    31. sij

    Hey ! If you've always wanted to know what changed with the implementation of foreach loops from C# 4 to C# 5, and let's face it who hasn't, come to Room 4, on level 4, at 3pm and I'll tell you!

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  21. 31. sij

    It's interesting to look at the 'Guide for porting .NET to a new processor architecture' and read through the 'Design Issues', *lots* of low-level details the Runtime has to handle across CPUs/OSes

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