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Sergiy Teplyakov ๐Ÿ‡บ๐Ÿ‡ฆ ๐Ÿ‡บ๐Ÿ‡ธ
3,628 posts
@STeplyakov

Sergiy Teplyakov ๐Ÿ‡บ๐Ÿ‡ฆ ๐Ÿ‡บ๐Ÿ‡ธ

@STeplyakov
Principal Software Engineer at Azure Physical Networking. Ukraine โ†’ US
WA, USA
youtube.com/@DissectingTheโ€ฆ
Joined March 2010
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  • Pinned
    @STeplyakov
    Sergiy Teplyakov ๐Ÿ‡บ๐Ÿ‡ฆ ๐Ÿ‡บ๐Ÿ‡ธ
    @STeplyakov
    May 22, 2025
    Hey #dotnet people! Exciting news! I've launched my YouTube channel: "Dissecting the Code". It's going to be very similar to my blog, where I'll cover .NET internals, performance tips & tricks, and more deep dives. #csharp I've already published the first two videos: โžก๏ธ Episode
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  • @STeplyakov
    Sergiy Teplyakov ๐Ÿ‡บ๐Ÿ‡ฆ ๐Ÿ‡บ๐Ÿ‡ธ
    @STeplyakov
    Aug 26
    Opus 5, Medium reasoning. I have a skill that explicitly asks to use a dedicated skill for creating a PR. The agent ignored the instruction. The reason? ยฏ_(ใƒ„)_/ยฏ But the coding is definitely solved, folks!
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  • @STeplyakov
    Sergiy Teplyakov ๐Ÿ‡บ๐Ÿ‡ฆ ๐Ÿ‡บ๐Ÿ‡ธ
    @STeplyakov
    Aug 18
    It's been just over a month since my first Dometrain course, Mastering C#, was released. I wasn't sure how a 3.5-hour deep dive into C# would land, but it's #2 trending course today and was one of Dometrain's five most-viewed courses last month! Use code MASTERING40 for 40%
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  • @STeplyakov
    Sergiy Teplyakov ๐Ÿ‡บ๐Ÿ‡ฆ ๐Ÿ‡บ๐Ÿ‡ธ
    @STeplyakov
    Jul 27
    On a non-technical side (that I very rarely share here). Iโ€™ve started bouldering about a year ago, and Yesterday I did my first V6! This one definitely matched my style: physical, not particularly technical with very grippy holds. But still, it was amazing to do it!
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  • @STeplyakov
    Sergiy Teplyakov ๐Ÿ‡บ๐Ÿ‡ฆ ๐Ÿ‡บ๐Ÿ‡ธ
    @STeplyakov
    Jul 26
    .NET Team should pay better attention to the docs, since a lot of people assume the examples are best practices. Here is an anti-example: don't extend IEnumerables with indexers that calls ElementAt. Indexer has an assumption that the cost is O(1).
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