Celezt.Text.MutString 2.2.0

.NET 6.0 .NET Standard 1.3 .NET Framework 4.6 
dotnet add package Celezt.Text.MutString --version 2.2.0
NuGet\Install-Package Celezt.Text.MutString -Version 2.2.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="Celezt.Text.MutString" Version="2.2.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
paket add Celezt.Text.MutString --version 2.2.0
#r "nuget: Celezt.Text.MutString, 2.2.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
// Install Celezt.Text.MutString as a Cake Addin
#addin nuget:?package=Celezt.Text.MutString&version=2.2.0

// Install Celezt.Text.MutString as a Cake Tool
#tool nuget:?package=Celezt.Text.MutString&version=2.2.0

MutString

An alternative to the System.Text.StringBuilder C# class. Modified version of LiteStringBuilder.

Why?

Because System.Text.StringBuilder does a lot of unnecessary memory allocation when appending data and is overall slow with its implementations. It is also not always continuous data but instead spread across in chunks, disallowing the use of Span. MutString is designed for smaller strings that are frequently modified instead of document-sized text.

Possible Improvements

MutString is faster than LiteStringBuilder with major changes to the existing methods. Some of the implementations are based on String's source code. Even with those changes, there are still possibilities for improvement.

Single, Double, Decimal

Floats currently relies on .ToString because it uses Dragon4, which is hard to compete with. .NET does not in the latest version expose any of the methods used to implement it, and has too many dependencies realistically to copy.

Params Append

It currently loops and individually appends each element. This could be improved by allocating enough space before appending.

Trim Character

Trim, TrimStart and TrimEnd is supported for removing empty space. String supports trimming by specified characters which MutString does not support.

Append Join

System.Text.StringBuilder supports appending multiple elements with separators which MutString lacks.

String Comparison

It currently does not support StringComparison for many of its methods which would benefit from it. Implementing StringComparison in a performative way is not easy and would most likely need different algorithms depending on the comparison type.

Performance

Benchmark Test

.NET 7
BenchmarkDotNet v0.13.7, Windows 11 (10.0.22621.2134/22H2/2022Update/SunValley2)
AMD Ryzen 7 7700, 1 CPU, 16 logical and 8 physical cores
.NET SDK 7.0.400
  [Host]     : .NET 7.0.10 (7.0.1023.36312), X64 RyuJIT AVX2
  DefaultJob : .NET 7.0.10 (7.0.1023.36312), X64 RyuJIT AVX2
Method Mean Error StdDev Gen0 Gen1 Allocated
StringReplace 58.74 ns 0.269 ns 0.239 ns 0.0143 - 240 B
StringPlusOperation 114.86 ns 0.401 ns 0.335 ns 0.0181 - 304 B
StringInterpolation 117.50 ns 0.981 ns 0.819 ns 0.0067 - 112 B
MutStringAppend 131.50 ns 0.499 ns 0.466 ns 0.0143 - 240 B
StringConcat 141.66 ns 1.172 ns 1.096 ns 0.0315 - 528 B
StringJoin 156.69 ns 1.015 ns 0.950 ns 0.0272 - 456 B
MutStringReplace 162.85 ns 0.284 ns 0.237 ns 0.0110 - 184 B
StringBuilderAppend 200.80 ns 1.231 ns 1.152 ns 0.0257 - 432 B
LargeStringPlusOperation 205.03 ns 4.108 ns 5.484 ns 0.4795 - 8024 B
LargeStringConcat 214.53 ns 4.170 ns 4.283 ns 0.4795 - 8024 B
LargeStringBuilderAppend 275.13 ns 4.988 ns 5.122 ns 0.4959 0.0153 8296 B
PrimitiveMutStringAppend 353.22 ns 2.398 ns 2.243 ns 0.0296 - 496 B
LargeMutStringAppend 368.39 ns 7.036 ns 6.582 ns 0.4935 - 8248 B
PrimitiveStringConcat 383.77 ns 2.725 ns 2.549 ns 0.0648 - 1088 B
PrimitiveStringInterpolated 402.43 ns 1.352 ns 1.199 ns 0.0172 - 288 B
PrimitiveStringBuilderAppend 410.15 ns 2.230 ns 2.086 ns 0.0334 - 560 B
PrimitiveStringPlusOperation 427.88 ns 1.576 ns 1.316 ns 0.0515 - 864 B
LargeStringInterpolated 440.49 ns 8.043 ns 7.524 ns 0.4792 - 8024 B
StringBuilderReplace 754.67 ns 15.028 ns 17.306 ns 0.0219 - 368 B

Supported Platforms

  • .NET Core 6.0+
  • .NET Framework 4.6+
  • .NET Standard 1.3+

How to Use it

Install the Nuget package:

    dotnet add package Celezt.Text.MutString --version 2.2.0

Package

Or reference the MutString.dll assembly that matches your app's platform.

Creating MutString

    using Celezt.String;
    
    // Create through instance.
    var ms = new MutString();
    
    // Or through static call (will create a new instance).
    var ms = MutString.Create();
    
    // Can create an instance with buffer pool size.
    var ms = new MutString(500);
    
    // Can create an instance with an initial string value.
    var ms = new MutString("Hello World");

Using MutString

    // Retrieve an instance from the pool.
    var ms = MutString.Create();
    
    ms.Append("Cost: ")
      .Append(32.11)
      .Append(" Sent: ")
      .Append(false);
	
    ms[0] = 'A';
    char chr = ms[0];
	
    ms.Span.Fill('B');
    
    // Return instance of string.
    ms.ToString();
Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 is compatible.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 is compatible.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp1.0 was computed.  netcoreapp1.1 was computed.  netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard1.3 is compatible.  netstandard1.4 was computed.  netstandard1.5 was computed.  netstandard1.6 was computed.  netstandard2.0 is compatible.  netstandard2.1 is compatible. 
.NET Framework net46 is compatible.  net461 was computed.  net462 was computed.  net463 was computed.  net47 is compatible.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen30 was computed.  tizen40 was computed.  tizen60 was computed. 
Universal Windows Platform uap was computed.  uap10.0 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

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Version Downloads Last updated
2.2.0 550 8/29/2023
2.1.0 516 8/23/2023

* Added CopyTo
* Changed explicit and implicit casting (breaking change)