Steven Giesel • 4/3/2022

Create a low allocation and faster StringBuilder - Span in Action

This technical article explains the performance limitations of the standard .NET StringBuilder due to memory allocations during resizing. It proposes and details the implementation of a more efficient alternative using the Span<T> type from .NET Core 2.1. The tutorial covers why string concatenation is slow, how Span<T> works as a stack-only ref struct to manage contiguous memory, and how to build a safer, faster StringBuilder for smaller strings.

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#performance #c #Span