Base types, Collections, Diagnostics, IO, RegEx…
Here is a list of all the new BCL features that shipped in Visual studio 2005 Beta1
We added the ability to use character class subtraction to regular expressions. The specification is publicly available here.
We have added the ability to compress, and decompress streams using the standard GZip and Deflate formats. Check the System.IO.Compression namespace for the classes you need to leverage this functionality.
We have now exposed the ability to manipulate and manage ACLs from managed code. The basic support is available in the security space, while specific support for various object types is available via the classes that expose the ACL, such as FileStream, or RegistryKey.
In order to better enable users to pass DateTime’s around and know the style of the DateTime, the DateTime class now exposes a ‘Kind’ property (and a SpecifyKind method), which uses a DateTimeKind enum to let you know if the DateTime is a local, universal, or unknown (the current behavior) DateTime.
We’ve expanded the rounding capabilitites on the Math, and Decimal classes.
We’ve added a new class, which can be used to add the null concept to structs.
We have a new class which allows someone to avoid putting confidential data into a String type.
Debugger Display Attributes
We have a variety of new attributes you can decorate your code with, so that they are more useful, and have better information when viewed in a debugger.
Various System Work
We’ve added a variety of small features to System classes, such as the ability to set environment variables (via the Environment class), some new generic classes such as EventHandler<T> and ArraySegment<T>, new methods on String (new overloads for Split, EndsWith, and BeginsWith are some examples), and additional information available on the OSVersion (from Environment).
We’ve added a new stream to be able to access memory from an unmanaged source.
System.Collections namespace now contains collections intended for scenarios where a collection needs to be exposed from an object model. For example Directory.Files property returning a collection of files in a directory. The collections are called Collection<T>, ReadOnlyCollection<T>, and KeyedCollection<K,T>.
Delegate Based Members on List<T> and Array.
A good description of the feature can be found at http://blogs.msdn.com/kcwalina/archive/2004/06/22/162533.aspx
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