I have also collected a few more similar LINQ extension method overloads in a Github project that I have chosen to call. The quest for a solution will continue nonetheless. At this point, I have no viable solution for returning the same dictionary type that was used as input to the specialized Where method. Unfortunately, this method will always return a Dictionary object, regardless of whether intDict is a SortedDictionary or SortedList or another object implementing the IDictionary interface. Having the above Where() extension method defined now even makes it possible for us to apply our first dictionary LINQ attempt without compilation error: When this method is defined, it effectively hides the general Where(IEnumerable, Func) extension method when the IEnumerable object also implements the IDictionary interface.
ToDictionary(kv => kv.Key, kv => kv.Value) For correctness, our evenKeys assignment has to be expressed as follows:ĭictionary evenKeys = intMap.Where(kv => kv.Key % 2 = 0). You need to tell the compiler how you want to design your Dictionary based on this arbitrary type T. Yes, because the ToDictionary method also operates on IEnumerable objects. So for the evenKeys assignment to return a Dictionary we simply type: Fortunately, LINQ also provides a number of ToDictionary method overloads. Now, my guess is that in the normal case one would rather have the above assignment to return a Dictionary. Thus (ignoring for a moment that we could also have used the var keyword), the correct evenKeys assignment should read: From the LINQ point of view, Dictionary and other classes implementing the IDictionary interface are actually regarded as implementations of the IEnumerable> interface. In fact, the intDict.Where() statement is not entirely correct. IEnumerable evens = ints.Where(i => i % 2 = 0) ĭictionary evenKeys = intMap.Where(kv => kv.Key % 2 = 0) If you for example have a collection of integers, it is a simple task to pick the even numbers from the collection using LINQ: LINQ is a very powerful technique for operating on collections of objects in. Basic functionality is there though, DICOM file parsing and network client for example works out-of-the-box.
#TORTOISEHG SET BUNDLE COMPRESSION TYPE FULL#
In particular, it should be possible to implement network server and full image codec support through calls to native libraries. Silverlight 5 will open up new possibilities for the mdcm Silverlight library, since P/Invoke is now supported when running in so called "elevated trust" mode.Furthermore, these libraries only support lossy compression. The available open source JPEG codec libraries ( FluxJpeg.Core and LibJpeg.Net) only support 8 bit images, and I have not yet been able to extend either of the libraries to 12 bit support. I have tried to implement managed support for JPEG codecs in the Silverlight project, but I have so far stumbled on 12 (and 16) bit support.
It should be fairly straightforward to revert to Silverlight 4, but there may be some incompatibilities especially with respect to network access.
The Silverlight class library is currently using Silverlight version 5 Release Candidate.Since my efforts have now become more "official", I think it could be worth recalling some of the specific issues that are currently applicable in particular to the Silverlight library of mdcm: Yesterday, I was excited to see that my Silverlight and WPF fork of mdcm was merged, in its entirety, into Colby Dillion's main mdcm fork.
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