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Pattern matching! Tuples! Awesome, C# 7.0 is scratching two itches I've felt every time I've worked with it. If only .NET had a suitable cross-platform UI tool

Pattern matching! Tuples! Awesome, C# 7.0 is scratching two itches I've felt every time I've worked with it. If only .NET had a suitable cross-platform UI toolkit, then I'd be using it everywhere. Eto.Forms is a good attempt but I found rather buggy and limited at this point in development. Avalonia, while further along in terms of stability and features, doesn't even try to fit in with any platform's look and feel.

jimmaswell 10y ago
Why not winforms? Very convenient, and mostly works in mono
- Aeolos 10y ago
  WinForms is a dead end. It doesn't support Windows modern or Mac OS X, and it looks completely out of place on Linux.
  - snaky 10y ago
    > It doesn't support Windows modern That's a good thing. > or Mac OS X "Does Winforms run on OSX? Yes, as of Mono 1.9, Winforms has a native OSX driver that it uses by default" http://www.mono-project.com/docs/faq/winforms/ http://www.mono-project.com/docs/faq/winforms/ > it looks completely out of place on Linux On KDE3? KDE4? KDE Plasma? Gnome2? Gnome3? MATE? Cinnamon? LXDE? LXQt? Xfce? CDE? GnuStep? Unity? Enlightenment? Non-DE X Window System environment - with which Window Manager, with which theme?
    - jsight 10y ago
      I'm pretty sure that it looks out of place in all of the Deskktop environments that you have mentioned.
    - creshal 10y ago
      Going by the documentation you linked yourself: > In terms of integrating visually with the desktop, we currently ship with a classic Win32 theme. That sticks out like a sore thumb everywhere, including every Win32 release since Windows 2000.
      - Koshkin 10y ago
        The standard Win32 theme is the classic, an engineering marvel. Everything else that came after that - starting with the infamous native Windows XP theme - was and is a horrible mess.
  - jimmaswell 10y ago
    On Windows it takes the style of whatever window theme you're using, what do you mean?
- creshal 10y ago
  "mostly works" is rather… optimistic.
gsmethells 10y ago
Feels kinda crazy to see tuples and pattern matching "just arrive" when other languages have had them for years.
- rco8786 10y ago
  Sure. Like how streams "just arrived" in Java yet C# has had the equivalent for years. No language has every feature. C# is making enormous strides ahead of many of its counterparts.
  - premium-concern 10y ago
    Scala seems to be vastly more expressive while simultaneously having only 20% of C#'s feature set.
    - Newtopian 10y ago
      F# would probably be a better comparison peer to Scala than C# would IMHO
  - jinst8gmi 10y ago
    Java's a pretty extreme outlier for late or non-adoption of modern features, but it is true that Java is the closest direct competitor/peer to C# in terms of usage/marketshare. C# seems to be steadily shifting from being a language which initially (v1.0) looked like Java to one which looks increasingly like Scala (e.g. addition of pattern matching, tuples, local methods etc.).
    - codesterling 10y ago
      Java is generally C#'s main competitor. Comparing them is the most appropriate comparison.
- int_19h 10y ago
  What's your bar for "other language"? Remember that C# is a mainstream language, with all that entails in terms of stability and conservatism of language design (and the other way around - it's popular partly because it's conservative). Comparable languages are Java, C++ and the like; and in that category, C# is, generally speaking, more on the "progressive" end of the spectrum. Comparing it to something like Scala is rather apples and oranges.
vyrotek 10y ago
This is the feature I've been waiting for! Correct me if I'm too excited, but won't these be an excellent alternative to maintaining lots of DTOs for SQL calls?
- elboru 10y ago
  I was thinking the same, I never really liked having those, also good for handling responses from services.
jsmeaton 10y ago
Very glad to see tuples and pattern matching also. But allowing the tuples to be structs with mutable public fields seems off. Once a tuple is constructed it shouldn't be mutable IMO, unless I'm missing some important use cases?
- JimmyM 10y ago
  Quick'n'dirty construction of custom mutable trees, I guess? Don't know about important. Best guess I have.

jimmaswell 10y ago

Why not winforms? Very convenient, and mostly works in mono

Aeolos 10y ago
WinForms is a dead end. It doesn't support Windows modern or Mac OS X, and it looks completely out of place on Linux.
- snaky 10y ago
  > It doesn't support Windows modern That's a good thing. > or Mac OS X "Does Winforms run on OSX? Yes, as of Mono 1.9, Winforms has a native OSX driver that it uses by default" http://www.mono-project.com/docs/faq/winforms/ http://www.mono-project.com/docs/faq/winforms/ > it looks completely out of place on Linux On KDE3? KDE4? KDE Plasma? Gnome2? Gnome3? MATE? Cinnamon? LXDE? LXQt? Xfce? CDE? GnuStep? Unity? Enlightenment? Non-DE X Window System environment - with which Window Manager, with which theme?
  - jsight 10y ago
    I'm pretty sure that it looks out of place in all of the Deskktop environments that you have mentioned.
  - creshal 10y ago
    Going by the documentation you linked yourself: > In terms of integrating visually with the desktop, we currently ship with a classic Win32 theme. That sticks out like a sore thumb everywhere, including every Win32 release since Windows 2000.
    - Koshkin 10y ago
      The standard Win32 theme is the classic, an engineering marvel. Everything else that came after that - starting with the infamous native Windows XP theme - was and is a horrible mess.
- jimmaswell 10y ago
  On Windows it takes the style of whatever window theme you're using, what do you mean?
creshal 10y ago
"mostly works" is rather… optimistic.

gsmethells 10y ago

Feels kinda crazy to see tuples and pattern matching "just arrive" when other languages have had them for years.

rco8786 10y ago
Sure. Like how streams "just arrived" in Java yet C# has had the equivalent for years. No language has every feature. C# is making enormous strides ahead of many of its counterparts.
- premium-concern 10y ago
  Scala seems to be vastly more expressive while simultaneously having only 20% of C#'s feature set.
  - Newtopian 10y ago
    F# would probably be a better comparison peer to Scala than C# would IMHO
- jinst8gmi 10y ago
  Java's a pretty extreme outlier for late or non-adoption of modern features, but it is true that Java is the closest direct competitor/peer to C# in terms of usage/marketshare. C# seems to be steadily shifting from being a language which initially (v1.0) looked like Java to one which looks increasingly like Scala (e.g. addition of pattern matching, tuples, local methods etc.).
  - codesterling 10y ago
    Java is generally C#'s main competitor. Comparing them is the most appropriate comparison.
int_19h 10y ago
What's your bar for "other language"? Remember that C# is a mainstream language, with all that entails in terms of stability and conservatism of language design (and the other way around - it's popular partly because it's conservative). Comparable languages are Java, C++ and the like; and in that category, C# is, generally speaking, more on the "progressive" end of the spectrum. Comparing it to something like Scala is rather apples and oranges.

vyrotek 10y ago

This is the feature I've been waiting for! Correct me if I'm too excited, but won't these be an excellent alternative to maintaining lots of DTOs for SQL calls?

elboru 10y ago
I was thinking the same, I never really liked having those, also good for handling responses from services.

jsmeaton 10y ago

Very glad to see tuples and pattern matching also. But allowing the tuples to be structs with mutable public fields seems off. Once a tuple is constructed it shouldn't be mutable IMO, unless I'm missing some important use cases?

JimmyM 10y ago
Quick'n'dirty construction of custom mutable trees, I guess? Don't know about important. Best guess I have.