C#


ROSLYN.PERFORMANCE.CA1847 : Use char literal for a single character lookup (C#)

See Roslyn-Detected C# Warning Classes for more information.

Summary

'string.Contains(char)' is available as a better performing overload for single char lookup.

This check corresponds to Roslyn rule CA1847. For full rule details, see the Microsoft website: CA1847.

Properties

Class Name Use char literal for a single character lookup (C#)
Significance reliability
Mnemonic ROSLYN.PERFORMANCE.CA1847
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="Use char literal for a single character lookup (C#)"

Relevant Configuration File Parameters

The following configuration file parameters affect checks for this warning class.