May 19, 2022

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Epicurean computer & technology

Microsoft .NET 7 Preview 4 brings Regex improvements, cache metrics

Microsoft .NET 7 Preview 4 brings Regex improvements, cache metrics


Microsoft’s most recent preview of .Web 7, the forthcoming subsequent edition of its software program enhancement system, features enhancements for operating with typical expressions and caching.

Downloadable from the Microsoft .Internet site, the fourth preview of .Internet 7 was published May possibly 10. The output release is thanks in November.

Microsoft .Net Preview 4 provides remaining planned APIs that include help for span varieties to the Regex (standard expressions) library. The improvements include support for matching with ReadOnlySpan inputs and overhaul the dealing with of RegexOptions.IgnoreCase. The new span-based mostly APIs include things like:

  • Regex.IsMatch(ReadOnlySpan input), which indicates irrespective of whether the frequent expression finds a match in the input span.
  • Regex.Rely(ReadOnlySpan input), which lookups an enter string for all occurrences of a common expression and returns the range of matches.
  • Regex.EnumerateMatches(ReadOnlySpan enter), which queries an enter span for occurrences of a typical expression and returns a ValueMatchEnumerator to lazily iterate above the matches.

In other Regex improvements, Microsoft claimed it has labored to make the code created by the Regex supply generator much more readable and a lot easier to debug, and to allow projects with several resource-generated regular expression designs to share typical code.

Preview 4 also introduces metrics aid for IMemoryCache. The most important APIs currently being extra are MemoryCacheStatistics, which retains cache hit, pass up, believed dimension, and count for IMemoryCache, and GetCurrentStatistics, which returns an occasion of MemoryCacheStatistics, or null when the TrackStatistics flag is not enabled.

Also in Preview 4, Microsoft has completed annotating the Microsoft.Extensions.* libraries for nullability, released an Activity.Existing transform occasion to enrich OpenTelemetry aid for observability, and added the Procedure.Formats.Tar assembly, which is made up of cross-platform APIs for examining, archiving, composing, and extracting Tar archives.

Microsoft .Web 7 Preview 1 was released February 17, adopted by .Web 7 Preview 2 and .Internet 7 Preview 3 on March 14 and April 13, respectively.

Copyright © 2022 IDG Communications, Inc.



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