A fast and low allocation StringBuilder for .NET.

Install the package:

PM> Install-Package LinkDotNet.StringBuilder

Afterwards use the package as follow:

ValueStringBuilder stringBuilder = new ValueStringBuilder();
stringBuilder.AppendLine("Hello World");

string result = stringBuilder.ToString();

The dotnet version of the StringBuilder is a all purpose version which normally fits a wide variety of needs. But sometimes low allocation is key. Therefore I created the ValueStringBuilder. It is not a class but a ref struct which tries to do as less allocations as possible. If you want to know how the ValueStringBuilder works and why it uses allocations and is even faster, checkout this blog post. The blog goes a bit more in detail how it works with a simplistic version of the ValueStringBuilder.

The following table gives you a small comparison between the StringBuilder which is part of .NET and the ValueStringBuilder:

|              Method |     Mean |   Error |  StdDev |  Gen 0 | Allocated |
|-------------------- |---------:|--------:|--------:|-------:|----------:|
| DotNetStringBuilder | 430.7 ns | 8.52 ns | 7.55 ns | 0.3576 |   1,496 B |
|  ValueStringBuilder | 226.7 ns | 2.45 ns | 2.05 ns | 0.1395 |     584 B |

Checkout the Benchmark for more detailed comparison and setup.