C# 4.0 and VB10. WOW

Just some bits and pieces, I'm sure a video is imminent, but the dynamic stuff has left my jaw on the floor. That is how far my jaw dropped.

See here too: http://code.msdn.microsoft.com/csharpfuture

I'm not sure if I like the whole dynamic typing thing going on with C#. I left PHP so I was rid of all that crap.

The named parameters and default values are great, though. Now if only there was some way so pass a reference argument as a const.

It would seem that in 4.0 the main reason to still fall back to VB.Net for Com stuff might finally be removed.

It's about bloody time....

blowdart said:

Sod the dynamic bits. OPTIONAL PARAMETERS. DEFAULT VALUES.

FINALLY!

I must agree with you.

What I like the most is that it's almost a "why was this not done sooner" scenario. All the best .NET 3.0 things like object initialisers, automatic properties and extension methods, make you look at C++ and think, this language has been around since the late 70's, surely they could have made these improvements by now?

I do think that if you are learning C++/C# or VB, that having a getter and setter aids in understanding what is happening. Using automatic properties when learning is a bit like using a goto in that it makes it more difficult to understand what is happening. This may be just me, but I feel automatic properties should never be taught to a beginner.

blowdart said:

Sod the dynamic bits. OPTIONAL PARAMETERS. DEFAULT VALUES.

FINALLY!

I'm a bit amazed, frankly. Didn't they say not having that stuff in C# was a conscious design decision?

Sven Groot said:

blowdart said:

*snip*

I'm a bit amazed, frankly. Didn't they say not having that stuff in C# was a conscious design decision?

I suspect the reality that people aren't going to produce a complete set of PIAs has finally sunk in. Especially given that there are some COM APIs that simply don't map well onto the rigid C# structure.

Easy COM without VB! Surely a cause for a party.

Ion Todirel said:

is it only me or that optional parameters sample is written wrong? overall interesting, waiting for more information on the subject

Dexter's link has the 11 page word doc with everything in it. Any information or announcements will be based on that document.

So now the two languages really are identical?

Ion Todirel said:

vesuvius said:

*snip*

thanks

Co and contra variance in generics? hmm

The dynamics I'd seen hinted awhile back at jaoo, he was giving examples of you calling code has to be 'aware' of how to call 'interop' methods, where as IDynamicObject and MetaObject allow the compiler to transform a standard clr looking method call into a call to the meta object which gets handled internally.. it seems like a clever way to do this, the extensibility of this will be great.

Also, vs2010 - is this really going to be released late 2009 or early 2010? or sooner? seems like a long time to wait for c# 4..

Actually the variance thing looks pretty sound, they kept it simple by having type params marked as outward / inward only.. allowing the compiler to guarentee type safety isn't compromized by specific calls.

stevo_ said:

Also, vs2010 - is this really going to be released late 2009 or early 2010? or sooner? seems like a long time to wait for c# 4..

Office 2007 and Vista were released 2006. Visual Studio 2008 was released 2007.

I think it's a case of choosing the year that business starts to shift to the new version. Most places are starting to shift to VS 2008 now.

vesuvius said:

stevo_ said:

*snip*

Office 2007 and Vista were released 2006. Visual Studio 2008 was released 2007.

I think it's a case of choosing the year that business starts to shift to the new version. Most places are starting to shift to VS 2008 now.

Visual Studio 2005 was released in late 2005.

stevo_ said:

Also, vs2010 - is this really going to be released late 2009 or early 2010? or sooner? seems like a long time to wait for c# 4..

I predict that VS2010 will be released shortly after Windows 7 is released.