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See Roslyn-Detected C# Warning Classes for more information.
'AsSpan' is more efficient then 'Substring'. 'Substring' performs an O(n) string copy, while 'AsSpan' does not and has a constant cost.
This check corresponds to Roslyn rule CA1846. For full rule details, see the Microsoft website: CA1846.
| Class Name | Prefer 'AsSpan' over 'Substring' (C#) |
|---|---|
| Significance | reliability |
| Mnemonic | ROSLYN.PERFORMANCE.CA1846 |
| Categories | None |
| Availability | Available for C# only. |
| Enabling | Checks for this warning class are enabled by
default. To disable them, add the following WARNING_FILTER rule to the
project configuration file.
WARNING_FILTER += discard class="Prefer 'AsSpan' over 'Substring' (C#)" |
The following configuration file parameters affect checks for this warning class.
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