A Complete .NET Developer's Guide to Span with Stephen Toub
VloĆŸit
- Äas pĆidĂĄn 6. 06. 2024
- Scott and Stephen are back with another entry in the Deep .NET series, this time looking deep at System.Span enabling the representation of contiguous regions of arbitrary memory, regardless of whether that memory is associated with a managed object, is provided by native code via interop, or is on the stack. And it does so while still providing safe access with performance characteristics like that of arrays. Let's go deep on Span.
Chapters:
00:00:00 Exploring the Impact and Evolution of Span in Software Engineering
00:03:09 Deep Dive into Assembly Code and its Translation
00:04:15 Exploring Methods to Disassemble and Analyze C# Function
00:05:43 Exploring the JIT Compiler and Assembly Code Optimization
00:12:03 Understanding Arrays and Pointers in Programming
00:16:46 Understanding Memory Management and Array Access in Programming
00:24:35 Discussing the Cost and Implementation of Memory Management Functions
00:26:23 Exploring the Intersection of Performance, Maintenance, and Interop in Programming
00:31:51 Understanding the Concept and Impact of Span in Computer Science
00:39:28 Discussion on Memory Protection and Immutability in Unix and Windows
00:45:59 Implementing and Understanding the Concept of Ref Functions in C#
00:51:08 Exploring JavaScript Optimal Notation and Memory Management
00:54:28 Exploring the Implementation and Functionality of Span in Programming
00:59:53 The Evolution and Impact of Span in .NET Development
Resources:
Documentation: learn.microsoft.com/dotnet/st...
Connect with .NET:
Blog: aka.ms/dotnet/blog
Twitter: aka.ms/dotnet/twitter
TikTok: aka.ms/dotnet/tiktok
Mastodon: aka.ms/dotnet/mastodon
LinkedIn: aka.ms/dotnet/linkedin
Facebook: aka.ms/dotnet/facebook
Docs: learn.microsoft.com/dotnet
Forums: aka.ms/dotnet/forums
đââïžQ&A: aka.ms/dotnet-qa
đšâđMicrosoft Learn: aka.ms/learndotnet
#dotnet - VÄda a technologie
Like video at 0 seconds just because of @Stephen Toub
Not you alone. I did exact same thing, because it's the wizards show!
Like this comment at 1 second because I had to stop to like the video first because of Stephen Toub
We need more Stephen Toub's
This series is awesome, please keep it going for a long time. Stephen's knowledge is incredible and his enthusiasm is infectious. The dynamic between Scott and Stephen make this series unmissable.
Man, these guys are killing it with the series -- great topics.
How does someone even become as great as Stephen Toub, man the guy knows his stuff.
You do it as your fulltime job for multiple decades, haha.
Pray enough to the coding gods...j/k đ
"Have you got anything without Span?"
"Well, there's Span Span List and Span, that's not got much Span in it."
Lobster Thermidor aux crevettes with a Mornay sauce, garnished with truffle pùté, brandy, and a fried egg on top, and Span.
These talks from Stephen are truly the best dotnet content available. Stephen has the knowledge and goes next level in explaining it extremely clear but simple and is just a joy to listen to.
TimeSpan well spent! Thank you :)
This series of videos featuring Stephen Toub is truly remarkable and incredibly interesting. Thank you!
I can't get enough of this content :) Who would have thought that an hour long video on spans is literally the most exciting thing on my feed this week!
Awesome content. Please make a video on System.IO.Pipelines
Learning from Stephen Toub is such a pleasure, man is a .NET master!
Love this series. keep it up
That floppy drive jumper comparison got me. The assembly I could follow, ain't never heard of a jumper before. Today I learned a couple things! Great content!
How does Span relate to Memory? I'd love to see a follow up to this that gets into that detail.
Memory is on the heap, Span is stack only. You can use Memory just like any other non-ref type, but Span can be used only within the function. Also, Memory can be used in async await, while the other cannot (because of stack only constraint). Memory behaves like Span, but it is much closer to ArraySegment without being array only type. I don't think I have used this type anywhere, but I have seen it being used around the Stream class.
This is amazing!
Now I need a video on Multithreading and Parallel Processing from Scott and Stephen!
Dataflow...
Every video with Stephen in it is a treasure
Great series, loving it. Some of the topics I would love to see covered next:
- how equality works (intermediate)
- how the allocator and and the GC work (expert)
- how exceptions work (expert)
- how analyzers work
- how generators work
- how JIT works
Although I don't understand some things, I still feel excited. Please continue to keep up
WOW!!! Love these series, please don't stop!
Fantastic content guys!! Canât wait for the next one. A deep dive into the GC would be cool
Awesome series! Please do a video on the async runtime of c# next about how the default task scheduler works, especially interested in knowing how tasks get scheduled and as developers using the async runtime how do we avoid common pitfalls of inefficient patterns
Please don't stop making these!
Scott and Stephen are doing a great job, all the best.
Scott and Stephen: Outstanding series!
It's crazy how simple Span is on the inside considering the impact it's had on .NET in recent years.
Keep posting Stephan! We need more content like this, Thank You
I wanna watch Stephen build a complex project from start to finish. I would love to see how he works.
Incredible as always
Scott and Stephen are a great combo. Looking forward to future presentations.
I saw Stephen Toub, I clicked.... freaking awesome presentation learned a lot from this.
Just Brilliant! Keep making more of these.. Thanks.
Oh no, it happened again!
The video is over and I've already seen all parts of the seriesđąđ
Thank you so much! Love every second of it...
You guys are awesome combo, thanks for the videos! :)
Excellent video, please keep Mr. Toub on a few more episodes. As of topics to cover if possible please make video on how to interop or preferably make binding of C libraries on .NET.
Great stuff! Looking forward to the next one.
Stephen Toub is my spirit animal. So smart!
Man, you guys nailed it as usual, absolutely love these videos. GC next? đ
one of the best demo/tutorials I have ever seen about Span.
Another great session! Keep them coming đ
This is a treat
This is freaking awesome!!! Right from the source, you should build a comprehensive "deep C# course" with all of this, for people that would like to purse perf related topics. Right now, I don't think there's a place where you can do that. It's basically spread around books, courses, blogs, etc etc.
Really nice this one.
Dotnet has many layers of abstractions in a good way. They are like magic. Watching this series is like those videos in which a magician explains how they are doing their tricks under the hood. I love it.
Pure Knowledge Sharing.. & No dumb podcast like others.. Truly Marvelous.
â„
Thank you very much! Great content!
my new favorite tv show. Love it!
Like in the good old days of Channel 9 đ
I haven't seen Bart De Smet in years. Is he available to talk about IObservable? Why has there been less emphasis on it in recent times? Also IQbservable..
That was wild, I definitely want to see a part 2. Would also be cool to go through stuff like MemoryMarshall and its methods
Iâm value added :))) thank you guys!
its the only video I need to watch to learn what is Span in .net
This was a great video. All I need now is another deep dive video into Memory to complete my understanding of it. Thanks again for such a great video.
The series is really great! Thanks for sharing! ME me I'd personally love to see how what lies under the hood of reflection.
Best Content On youtube today. I love the relaxed page and the high intensity content. It's almost an anti pattern of all the click-bate, gapless, b-roll crap on youtube today.
If stephen does a workshop of stuff like this in NDC London next year, I'll drop $2000 to attend like when Dave and Damiean did the early workshops on .net core in circa 2017.
I'm interested in the meaning behind that last constructor check. Also, what are the tradeoffs from the alternative implementations you mentioned?
Would love to know more about Memory as well. I don't yet have proper intuition of how to use it.
Keep doing these with Stephen; would like to see more roll-your-own content, like the Async/Task video.
Thanks, very informative!
Looking forward to deep dives into memory of T, sequence of T, pipes and buffers.
Show must go on
StephenT and ScottH - nothing is better đ
Async/Await
LINQ
RegEx
Span
đđđđđđđđđđđđđđ
Loving it.
Thank you very much. Great Content.
The worst thing about this show is its time constraint! Great content guys! Amazing :)
Very nice explanation thanks a lot. I would like to see something related to streams and how they work I was always curious about that. If possible, of course. Thanks again .
I just love these videos!
I love this! Tanmirt!
At 38:48 Toub is talking about how if you have a readonly span it will put it in the data block of the binary. Do things like ImmutableArray get the same benefit or is the JIT compiler extra aware of ReadOnlySpan to do that optimization?
28:30 unsafe ist really a great keyword because it truly scares developers off ;)
I'm going to repeat myself, but thanks Scott and Stephen.
Awesome â€
Amazing!
I wonder what Scott is using a floppy for? :D Wonderful video, I hope we get more f this kind. Greetings from Norway :)
Amazing
My biggest question was how, using span, was the compiler able to keep such a tight loop when enumerating? Also could have mentioned that span does not allocate any memory or copy stuff around! This was a good one Scott/stephen! Thankyou
It does allocate memory for the Span (two fields), but it does on the stack, not on the heap. Also, since it only stores an address of memory and an int, no copy of data is needed.
The tight loop is achieved because T reference is basically a pointer so for enumerating the only thing it has to do is add "one" to the pointer times length, exactly the same as an array.
Riffing off "Naming is hard":
Spam
Hmmm.
Best C# feature in 10-15 yrs.
Any interface for all collections (Array, List, etc) that can be converted to Span
thank youuuu
knowledge SPANNING multiple videos.
These kind of videos should be in 202 schools.
I leave my instant like
34:31 - Pause
39:00 - utf8 syntax from c# 11
too gooood!
rubbed my hands together and cackled when I saw this
Can you guys please deep dive the csc or the CLR?
"readonly ref struct" appears in C# 8, while Span appreared earlier in .net core 2, and than Span was just a struct.
Would be interesting to see how it evolve.
@37:11 - Stephen's fingers were off-by-one there.
Can we have a video explaining ArrayPool and MemoryPool please?
the people in chat being negative about copilot are gonna get behind if they donât use the very powerful tools at our disposal.
you really donât want to be behind in a world with generative AI.
Most Valuable Video of Span
"Please - May I have more?"
đ
At the beginning of the video, while using Rider and I'm like it's still hard to see the IL code in Visual Studio đđ
Idea for next video: exception under the hood
Nice Invensible t-shirt
Hello Scott/ Stephen
Please do videos about algorithms used in framework.
Please like comments who interested in this. They may do video.
think i've heard is as:
The two hardest things for programmers:
* Naming things
* Cache invalidation
* Off by one errors
Tell us in the comment what you like and what you don't like.
There are five videos now and I am still figuring out what are don't like.
is there anything in these videos that we don't like, I don't think so.
đ„°
why dooes audio quality from .net never improve? please give them a good mic
How many times was he told to zoom in during this video? đđ
C##