system.memory Questions

2

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You can get Spans via System.Memory to.NET Standard 2.0 compatible libraries. But how do you do this the most efficiently in F#: let myRsp = "test1".AsSpan() let test = Seq.forall (fun x ...

4

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C# 7.2 introduces two new types: Span<T> and Memory<T> that have better performance over earlier C# types like string[]. Question: What is the difference between Span<T> and Memo...
Calamander asked 16/11, 2017 at 4:34

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Is it possible to use the new System.Memory Span struct with two dimensional arrays of data? double[,] testMulti = { { 1, 2, 3, 4 }, { 5, 6, 7, 8 }, { 9, 9.5f, 10, 11 }, { 12, 13, 14.3f, 15 ...
Fantinlatour asked 11/10, 2018 at 0:42

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I have a function of this kind of shape which does 1 dimensional rootfinding: public delegate double Fun(double x, object o); public static void Solve(Fun f, out double y, object o) { y = f(1.0...
Roberto asked 6/1, 2020 at 2:4

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I want to do operations on Span<T> in parallel but something like this is not legal: void DoSomething(Span<int> buffer, int option1, int option2) { ....... } void ParallelDoSomething...
Gyno asked 22/3, 2021 at 13:9

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Span points to a memory area. Given that I know what memory area it is (i.e. array), can I (efficiently) figure out what first element in the array it is pointing to? I figured since it is pointing...
Bickel asked 28/4, 2020 at 12:31

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I am having trouble conceptualizing the usages for the new Span<T> in C#. What construct(s) does it replace? Is ArraySegment<T> now obsolete? What functionality does it enable that pr...
Poppied asked 28/2, 2018 at 2:5

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I have read a few articles about how Span can be used to replace certain string operations. As such I have updated some code in my code base to use this new feature, however, to be able to use it i...
Spearwort asked 1/1, 2019 at 18:28

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Steps to reproduce: Open Visual Studio 2017 with latest update. Create a UWP project targetin 10240 (this is not mandatory, it's broken in all builds) Install System.Memory from nuget packages (...
Genome asked 18/4, 2018 at 12:41

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I notice that the following will compile and execute even though the local variables are not initialized. Is this a feature of Span? void Uninitialized() { Span<char> s1; var l1 = s1.Lengt...
Denishadenison asked 4/4, 2018 at 14:5

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How can one pass as a parameter a method that returns a Span? using System.Memory; public Span<byte> CallSpanFactory1(Func<Span<byte>> spanFactory) { return spanFactory(...
Politesse asked 5/3, 2018 at 21:57

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(Note: This sample code requires C# 7.2 or later, and the Nuget System.Memory package.) Let's suppose we have a readonly struct as follows: public readonly struct Test { public Test(int value) ...
Crossbench asked 12/12, 2017 at 15:6

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Let's say I have a Web application and I want to make use of the new Span<T> type to reduce GC pressure and improve performance. Which patterns should I look out for? Are there any typical o...
Arachnoid asked 16/11, 2017 at 12:42
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