C# and LINQ?

Unity Engine
1

From what I read, currently (and the 2.5 release) Unity is using Mono 1.2.5. In the release note for it, it states:

“The C# 3.0 support is enabled by passing the -langversion:linq option to the compiler. In addition to the above the C# 3.0 compiler also supports: extension methods, lambdas and anonymous method generic type inference.”

Now does the Mono that is being used in Unity Support these 3.0 features like LINQ, lambdas, etc…?

2

Looking at the Mono roadmap, it seems the Linq support in 1.2.5 is only very preliminary.

LINQ to Objects/XML has been added in 1.9, extended in 2.0 and LINQ to DB is only planned for Mono 2.6.

IIRC some C# 3.0 features also have only been backported to C# 2.0. Full 3.0 support is only available in Mono 2.0.

http://www.mono-project.com/Roadmap_History
http://www.mono-project.com/Roadmap

3

I’m really excited about LINQ and lambda expressions but I wonder how are the performance in the context of a game compared to some good old iterators :?:

4

That is a good point. I really do like the LINQ syntax as I do a lot of database work and it is so much easier to use something like LINQ for filter data that general iterators for complex situations but I think I will test out the speed difference from LINQ and iterators with the current version of c#/.NET that microsoft has out and see what the difference is (I am sure that Mono might have different results).

5

Anyone heard of when we can expect LINQ (XML) support in Unity (Mono) ?

Sooooo missing it for loading data…

6

not anytime soon

a move to mono2 was planned but as you can read in the uservoice system, there are incompatibility problems, so I would guess its a Unity 3.0 thing (which I personally expect to be the next non-bugfix release past 2.6, so not thaaat far away … in UT development time, thats 2.6 Release date + 6 - 12 months :wink: )