So its been a while since I last did a framework surface diff, but it seems my program still works.\u00a0 This time I diffed 4.6 RC vs 4.5.1.<\/p>\n
A few small things, but hiding in the middle is a bunch of new classes in System.Numerics which is nice.<\/p>\n
As usual this list is not complete, I skip things which I don’t think are worth mentioning.\u00a0 But that isn’t many things this time.<\/p>\n
\n- System.Array.Empty<T>() – does what it says on the box.<\/li>\n
- System.Buffer.MemoryCopy – like BlockCopy, but for raw memory pointers rather than arrays.<\/li>\n
- Usual set of SQL Server database connection additions – column encryption, authentication types.<\/li>\n
- DateTimeOffset supports conversion to\/from unix time in seconds\/milliseconds.<\/li>\n
- System.Diagnostics.ProcessStartInfo now has an Environment property.\u00a0 Not sure what it does yet, given there is already the EnvironmentVariables property.<\/li>\n
- Bunch of Event tracing stuff I have no idea about…<\/li>\n
- System.FormattableString – seems to bunch a format string and its arguments together – but has no public constructor… But there is a static create method on System.Runtime.CompilerServices.FormattableStringFactory.<\/li>\n
- System.GC – new ‘no GC’ region methods which ensure there is enough memory before they start.\u00a0 Can also force a small object heap compaction.<\/li>\n
- System.Globalization.CompareInfo.GetHashCode – can get a culture specific hashcode.<\/li>\n
- System.IO.MemoryStream.TryGetBuffer – can get back an array segment when memory stream is constructed with offset\/length.<\/li>\n
- Async methods for NamedPipeStream connection.<\/li>\n
- Async methods for read\/write\/flush on UnmanagedMemoryStream<\/li>\n
- Socket options for reusing ports.<\/li>\n
- System Numerics adds Matrix3x2, Matrix4x4, Plane, Quaternion, Vector2, Vector3, Vector4.\u00a0 They are unfortunately all single precision, but the reasoning is justified – they are all hardware accelerated using SIMD.\u00a0 Interestingly the pre-release 4.6 documentation appears newer than the actual released code here.\u00a0 It documents many useful static methods which are not yet in the actual library.\u00a0 Also there is apparently a System.Vector<T> coming which works for any primitive type T, with a maximum rank dependent on SIMD register width.<\/li>\n
- New assembly level attribute – DisablePrivateReflection – apparently does what it says…<\/li>\n
- Asymmetric padding mode options for crypto.\u00a0 CNG supports RSA.\u00a0 Crypto random number generator can write random values to a subset of an array.<\/li>\n
- WindowsIdentity.RunImpersonated – can now execute a delegate rather than having to set up an impersonation context.<\/li>\n
- string.Format with format provider now has the small arg count optimization of explicit methods for 1 2 and 3 format args.<\/li>\n
- System.Encoding has dropped default support for code page based encodings, you have to manually call RegisterProvider to have them supported??<\/li>\n
- System.Encoding has a GetString which takes a byte pointer and length rather than just an array.<\/li>\n
- StringBuilder has an Append which takes a char pointer and length rather than just an array.\u00a0 Also small arg count optimization with AppendFormat with format provider.<\/li>\n
- System.Threading.AsyncLocal – interesting, not 100% clear what it does yet, but it sounds like thread local variables except with a value per ‘async flow’ rather than per thread.<\/li>\n
- Task creation methods for immediate cancelled\/exception states.<\/li>\n
- Extension methods to get a safe wait handle given a wait handle.<\/li>\n
- System.Uri.IdnHost – can get punycode version of international domain names.<\/li>\n
- WPF diagnostics hook event for visible tree changes.<\/li>\n
- System.Xml.XmlNode gets a PreviousText property.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"
So its been a while since I last did a framework surface diff, but it seems my program still works.\u00a0 This time I diffed 4.6 RC vs 4.5.1. A few small things, but hiding in the middle is a bunch of new classes in System.Numerics which is nice. As usual this list is not complete, … Continue reading .Net 4.6 RC Diff<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-788","post","type-post","status-publish","format-standard","hentry","category-net-stuff"],"_links":{"self":[{"href":"https:\/\/www.themissingdocs.net\/index.php?rest_route=\/wp\/v2\/posts\/788","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.themissingdocs.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.themissingdocs.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.themissingdocs.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.themissingdocs.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=788"}],"version-history":[{"count":0,"href":"https:\/\/www.themissingdocs.net\/index.php?rest_route=\/wp\/v2\/posts\/788\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.themissingdocs.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=788"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.themissingdocs.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=788"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.themissingdocs.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=788"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}