Every Single LINQ Extension Method With Examples | .NET & C# Essentials
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- Опубликовано: 22 май 2024
- In today's video we're going to cover every single LINQ extension method with examples.
We're going to cover immediate execution vs deferred execution - what's the difference between them and whether or not immediate execution necessarily means iterating over the entire list and realizing the LINQ query.
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00:00. Opening
01:14. Where
01:40. OfType
02:24. Skip
02:35. Take
02:42. SkipLast & TakeLast
02:58. SkipWhile & TakeWhile
04:14. Select
04:36. Select with index
05:01. SelectMany
06:41. SelectMany with index
07:04. Cast
07:20. Chunk
07:58. Deferred Execution vs Immediate Execution
10:55. Any
11:20. All
11:44. Contains
11:55. Append & Prepend
12:41. Count
13:34. TryGetNonEnumeratedCount
14:51. Max
15:16. MaxBy
17:02. Min & MinBy
17:19. Sum
17:59. Average
18:06. LongCount
18:20. Aggregate (overload 1)
19:58. Aggregate (overload 2)
20:20. Aggregate (overload 3)
21:43. First & FirstOrDefault
22:34. Single & SingleOrDefault
24:06. Last & LastOrDefault
24:38. ElementAt & ElementAtOrDefault
25:04. DefaultIfEmpty
25:41. ToArray
25:50. ToList
25:57. ToDictionary
26:29. ToHashSet
26:35. ToLookup
27:46. ToEnumerable & ToQueryable
28:32. Enumerable.Range
29:28. Enumerable.Repeat
29:38. Enumerable.Empty
30:12. Distinct
30:26. DistinctBy
30:59. Set Operations Theory (Union, Intersect, Except)
32:27. Union
32:37. Intersect
32:44. Except
32:52. UnionBy & IntersectBy & Except
33:40. SequenceEqual
34:26. Zip
35:43. Join
37:05. GroupJoin
37:38. Concat
38:05. GroupBy
39:25. Order
39:41. OrderBy
40:10. OrderDescending & OrderByDescending
40:21. ThenBy & ThenByDescending
41:20. Reverse
41:36. PLINQ 
Наука
Cheers 🥂
01:14. Where
01:40. OfType
02:24. Skip
02:35. Take
02:42. SkipLast & TakeLast
02:58. SkipWhile & TakeWhile
04:14. Select
04:36. Select with index
05:01. SelectMany
06:41. SelectMany with index
07:04. Cast
07:20. Chunk
07:58. Deferred Execution vs Immediate Execution
10:55. Any
11:20. All
11:44. Contains
11:55. Append & Prepend
12:41. Count
13:34. TryGetNonEnumeratedCount
14:51. Max
15:16. MaxBy
17:02. Min & MinBy
17:19. Sum
17:59. Average
18:06. LongCount
18:20. Aggregate (overload 1)
19:58. Aggregate (overload 2)
20:20. Aggregate (overload 3)
21:43. First & FirstOrDefault
22:34. Single & SingleOrDefault
24:06. Last & LastOrDefault
24:38. ElementAt & ElementAtOrDefault
25:04. DefaultIfEmpty
25:41. ToArray
25:50. ToList
25:57. ToDictionary
26:29. ToHashSet
26:35. ToLookup
27:46. ToEnumerable & ToQueryable
28:32. Enumerable.Range
29:28. Enumerable.Repeat
29:38. Enumerable.Empty
30:12. Distinct
30:26. DistinctBy
30:59. Set Operations Theory (Union, Intersect, Except)
32:27. Union
32:37. Intersect
32:44. Except
32:52. UnionBy & IntersectBy & Except
33:40. SequenceEqual
34:26. Zip
35:43. Join
37:05. GroupJoin
37:38. Concat
38:05. GroupBy
39:25. Order
39:41. OrderBy
40:10. OrderDescending & OrderByDescending
40:21. ThenBy & ThenByDescending
41:20. Reverse
41:36. PLINQ
Dude this is the best video I have ever watched on this subject. You crushed this. No stumbling, no half-assing, no confusion. You were well prepared and taught everything perfectly. Just wanted to comment to let you know.
There's no reason why I should not like this video. Amazing effort, thank you Amichai 🙏
Liked and already subscribed. Am waiting for the PLINQ course! Never heard or used PLINQ but sounds useful. Thanks you!
Phenomenal and comprehensive guide! Incredibly helpful! Thanks
Best LINQ video in my opinion, and the only one you need to understand the topic, I just clicked on a whim, but I am glad that I did, thank you so much for making it.
I'm not a developer, but I do write code to test software, and I learnt some very nice things here. Great video!
Best LINQ video ever. I’ve been using LINQ for a long time and didn’t know half of these methods. 😃👍🏼
Marvelous, love such style of video that introduces bcl
This video was perfect, thank you!
thanks for covering all the LINQ methods 🙌🙌🙌🙌 . waiting for PLINQ
Extraordinary !
This is gold. Thank you for the video :)
Learned a bit about the lesser used LINQ extensions.
Great work. 👏👍
Thanks, man... no bullshit... just an explanation...
Your effort on this 🥰
Great work. Thanks a lot!
Consider making a tutorial about all types of lists :)
I should be filming "every single collection type" tomorrow 🤙
Awesome! *****
nice content
cool thx
Amazing video! So much effort; thank you.
Once small point, I would cover the overload of Zip that takes a collection and a Func as an argument.
That is probably one of the more powerful functions in Linq and strangely very few seem to know about it (it's up there with Aggregate)!
One of my favorites is to check if a list is ordered (there are probably simpler ways but this is pretty show-offish) :
var isOrdered = !list1.Zip(list1.Skip(1), (a,b) => a.Val
Can’t believe I didn’t know about this until now 🤯
I'm sure this has been asked many times but what do you use to draw the arrows and boxes on the screencast?
Brilliant video btw - I was blinded by the pretty colours 🙂
Your explanations are really simple enough and easy to listen and follow. I also have a question, what is the on screen drawing tool you are using?
Presentify
Awesome
תודה 😃😃
Thanks for the video, I have a question for Enumarable.Empty when you said the method is static, and every time we will get a reference to same collection. is it because *static* keyword ?
Thank you again
Yep
Amazing video one of the best about LINQ Extension Method
but could you please share readme markdown file
thank you alot for your effort
I think I broke my subscribe button this time.
What are you using to get realtime visualization of the collections?
goated!
Hi! Amichai! Which tool are you using for drawing boxes and arrows during the presentation? :)
Presentify 🙂
@amantinband Where can we find the reactive readme that you have in your video ?
It's available for Patrons (link in description)
Hi, thanks for creating video, i have watched the complete video, also can you please create video on all ef core methods.?
That’s a great idea. Added to my backlog
@@amantinband Great. Thanks a lot.
Great work. Thank you very much to explain here in a concise manner.
But there are a lot of courses like this on Pluralsight and Udemy. Anything new here?
Do you have the plans to explore/explain Dynamic LINQ and using LINQ in async/await?
I've honestly never taken a LINQ course, so can't compare. Main difference is it's free 🙂
The video in 2 weeks is about PLINQ which from my experience most devs aren't familiar with
Amichai. Please share your terminal set up. Especially the vim bindings in your terminal pls!
My setup is available here: github.com/amantinband/dotfiles
@@amantinband Awesome. Thanks for the prompt reply and I love your content btw! (bought your content on dometrain :) )
I love LINQPad
Design patterns videos perhaps?
Off topic: How did you make ZoomIt draw rainbow-colored squares and arrows?
Hi Amichai,
I want to learn C# and ASP to build web application. Which course do you recommend? Do you have of your own, I like the way you explain. From absolute beginner to Mastery as a beginner.
Hey, I don't have such a course yet. If you want to build a system following clean architecture then I'd definitely recommend taking my 2 clean architecture courses. But I wouldn't take them if you're still lacking knowledge in the basics of C#/ASP.NET
ASP is a framework built on top of the C# language last i checked
So is the only difference between ToLookup() and GroupBy() having an indexer?
Also, given that there's a Zip() method, to effectively Unzip() a ValueTuple[] into a Tuple, is there an ootb LinQ approach, that does not involve multiple enumeration?
ToLookup is immediate execution and GroupBy is deferred execution
Aaaah okay there's the detail I overlooked. Thanks :)
How can I know if a linq method is immediately executed or not - other than looking it up or memorizing it? I hovered my mouse over some linq methods and I didn't see anything that would indicate as such. Thanks.
Documentation mostly. You can use common sense for most methods (like count, contains must be immediately executed etc). Plus all methods prefixed with To (ToArray etc’) will be immediately executed as well
Holy fuck that thumbnail
Typically, these long formats get boring and its easy to stop following. Not the case for this one! Great video, quite a few LINQ methods that you don't typically use.
Side note - what do you use to draw on the screen? That is really useful?
Amazing to hear. I use presentify for drawing (it's MacOS only)
Great video, just an observation, at few important places you seem to be running too fast.
Man, too many Ads!
Great video, horrible thumbnail to the point it actively repels me.
Audio is terrible
damn, anyone else think so?
Nope, audio is pretty good
audio was fine for me
Does that dump method work with more complex objects?
Yep. Any object