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:
if err == MyError {
fmt.Println("MyErr")
}
After the quick fix is applied:
if errors.Is(err, MyError) {
fmt.Println("MyErr")
}
- 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
Inspection Details | |
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By default bundled with: | |
Can be installed with plugin: | Go, 243.23131 |
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