Direct comparison of errors
Reports direct comparison of errors, for example, using ==, and suggests using errors.Is instead.
Since Go 1.13, errors can be wrapped using the fmt.Errorf function with the %w verb. Therefore, direct comparison of errors using the equality check fails on wrapped errors. The preferred way of checking for a specific error is to use the errors.Is function from the standard library as this function traverses the chain of the wrapped errors while checking for a specific error.
For more information about errors.Is, refer to working with Errors in Go 1.13.
The quick-fix replaces direct comparison of errors with a call to errors.Is.
Example:
After the quick fix is applied:
Locating this inspection
- By ID
Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.
GoDirectComparisonOfErrors- Via Settings dialog
Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.
Inspection ID: GoDirectComparisonOfErrors
Suppressing Inspection
You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:
More detailed instructions as well as other ways and options that you have can be found in the product documentation:
Inspection Details | |
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By default bundled with: | |
Can be installed with plugin: | Go, 252.26654.0 |