Welcome to C# 10

#1

Post by tonicbbleking » Mon, Nov 08, 2021, 5:12 PM UTC

Re: Welcome to C# 10

#2

Post by t-writescode » Mon, Nov 08, 2021, 6:55 PM UTC

Oh wow. I do not like that "global using". It harkens to the auto-loading issues I've had with Rails. "Where was this defined? I dunno! It probably works here, though!!1"

I generally don't like a random file impacting several other files. Extension methods are ... tolerated and ... "fine" but I still feel unpleasant using them.

File-Scoped namespaces seem like someone's really, really tired of having nested folders and seems actively unnecessary.

I like natural lambda types

Good update on parameterless structs. I assumed that's how they worked already. I haven't used C# in 2 years; but you could do that with classes back when, so I assumed it would be the same with structs.

Constant interpolated strings is nice.

Extended property patterns is fine, just probably not for me.

Re: Welcome to C# 10

#3

Post by amir734jj » Mon, Nov 08, 2021, 7:00 PM UTC

t-writescode wrote: post #2

Oh wow. I do not like that "global using". It harkens to the auto-loading issues I've had with Rails. "Where was this defined? I dunno! It probably works here, though!!1" I generally don't like a random file impacting several other files. Extension methods are ... tolerated and ... "fine" but I still feel unpleasant using them. File-Scoped namespaces seem like someone's really, really tired of having nested folders a…

I do not like that "global using" as well. I wonder why they added it.

Re: Welcome to C# 10

#4

Post by david_allison » Mon, Nov 08, 2021, 7:13 PM UTC

t-writescode wrote: post #2

Oh wow. I do not like that "global using". It harkens to the auto-loading issues I've had with Rails. "Where was this defined? I dunno! It probably works here, though!!1" I generally don't like a random file impacting several other files. Extension methods are ... tolerated and ... "fine" but I still feel unpleasant using them. File-Scoped namespaces seem like someone's really, really tired of having nested folders a…

> Oh wow. I do not like that "global using". It harkens to the auto-loading issues I've had with Rails. "Where was this defined? I dunno! It probably works here, though!!1"

It's been a feature of Visual Basic .NET for a very long time (from recall: at least 2008), I'd hope Microsoft heavily queried user feedback before implementing.

https://docs.microsoft.com/en-us/visualstudio/ide/how-to-add...

Re: Welcome to C# 10

#5

Post by pharmakom » Mon, Nov 08, 2021, 7:24 PM UTC

C# is becoming the C++ of managed languages. I wish they would stick to a smaller set of more powerful features… like an earlier C# with hygienic macros or something.

Re: Welcome to C# 10

#6

Post by quotemstr » Mon, Nov 08, 2021, 7:24 PM UTC

Ugh. So with the new method groups feature, adding a new method overload can break working code even if that code never calls the new overload.

Re: Welcome to C# 10

#7

Post by breakingcups » Mon, Nov 08, 2021, 7:52 PM UTC

Not all of these changes sound good to me. Some sound like very niche cases that I now have to make a decision about when it comes to coding guidelines because there's always going to be that one developer in our company who wants to show off, even if it's not the right tool for the job.

Re: Welcome to C# 10

#8

Post by negativegate » Mon, Nov 08, 2021, 8:01 PM UTC

t-writescode wrote: post #2

Oh wow. I do not like that "global using". It harkens to the auto-loading issues I've had with Rails. "Where was this defined? I dunno! It probably works here, though!!1" I generally don't like a random file impacting several other files. Extension methods are ... tolerated and ... "fine" but I still feel unpleasant using them. File-Scoped namespaces seem like someone's really, really tired of having nested folders a…

File-scoped namespaces is nice to not have every class already sitting at one level of indentation. I don't see what it has to do with nested folders.

Re: Welcome to C# 10

#9

Post by HideousKojima » Mon, Nov 08, 2021, 8:02 PM UTC

t-writescode wrote: post #2

Oh wow. I do not like that "global using". It harkens to the auto-loading issues I've had with Rails. "Where was this defined? I dunno! It probably works here, though!!1" I generally don't like a random file impacting several other files. Extension methods are ... tolerated and ... "fine" but I still feel unpleasant using them. File-Scoped namespaces seem like someone's really, really tired of having nested folders a…

Doesn't really bother me, so long as the global usings are only kept to a single file. Intellisense will tell you the full namespace, then you can just see if you've got that namespace in the file you're in or in your dedicated global usings file.

Re: Welcome to C# 10

#10

Post by sbelskie » Mon, Nov 08, 2021, 8:04 PM UTC

The most interesting feature here (though included only as a preview) is static abstract members on interfaces, which will make things like generic math possible.