The New Way of Parsing ANY Type in .NET

Hello, everybody, I'm Nick, and in this video, I will show you a really cool feature that was added in .NET 7 that allows you to parse strings into any type with a consistent interface and programming model.

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[carldaniel]

All of the new "generic math" interfaces are awesome - long overdue. But please - DON'T implement TryParse as a call to Parse inside a try-catch. One of the key benefits of TryParse is that it does not throw - even internally. Implement Point2d.TryParse as two calls to int.TryParse and return true only if both succeed - no throw/catch inside.

[T___Brown]

Question: is there something built in that can do fixed width? Currently i have to do a lot of specific span reads but if there was a range like you had that i could split based upon multiple indexes then that might be better

[theonlywallrus]

just curious, what are you beginning to type when you are setting a default parameter? You start typing `format = by`, but then you backspace and type null. You did it twice haha

[AftercastGames]

Meh. Kinda cool, but ultimately not terribly useful, because types rarely only have one string representation.

If you want to create a different type for each representation, I guess this would work, but it just seems that writing a static parse function would be quicker and easier to understand.

But we’ll see. Maybe I’m just getting old, but adding new language features every month or two seems a bit chaotic, I think. You can’t even start and finish a project before your code is already obsolete. 🙄

[ntohl]

Nice. In the ReadOnlySpan TryParse example. Shouldn't it return false instead of throwing ArgumentOutOfRangeException?

[woocaschnowak]

When MS said they will add static interface members, I thought, they lost they mind. But now, that they provided such use cases, I'm changing my opinion :-)

[zoran]

Understood everything up to 2:00. After that my brain went coo-coo!

[mariocamspam]

10:11 We're circling right back to pre-2000s C, haha

[quranthecompanion]

we used to use Convert.ChangeType() for primitive data types. now we are changing the implementation to IParsable<>. its pretty neat.

[tmcheah]

"Random number"
Casually type in "69"
😂😂

[hanspetervollhorst]

The span part is imo way more interesting than the interface and abstract static stuff

[EdKolis]

I wonder why it's not spelled IParseable like ICloneable?

[cn-ml]

I really like the new Span splitting method, makes me feel in control of my memory. Also i totally love the new abstract interfaces, especially the IParsable, but I probably used INumber a lot more already.

[DaliborHomola]

Does somebody know if Complete Nick Chapsas Course Bundle will get all future courses? Please ☺ I'm thinking of buying it...

[gunnarliljas]

Nice. Wouldn't call that extension "Parse" though, since the string isn't parsing, it's being parsed.

[diadetediotedio]

I very much like this feature, I would rather prefer the "shapes" approach but this is really very very very userful

[pufferfish]

A type should not implement its own serialization.

[SvdSinner]

This was a great blend of useful right now, interesting and showing future functionality. Kudos!

[ONESTTEFTEO]

When Nick says Random number it means always 69

[haveaniceday]

Hey Nick, I saw you yesterday at Techorama. Thanks for the great talk!