README
¶
error-chain
With golang 1.13 the introduction of error wrapping was introduced.
There may be a need to gather an array of errors. With this package you can do just that and leverage the new 1.13 functionality.
package main
import (
"errors"
"fmt"
chain "github.com/g8rswimmer/error-chain"
)
type myError struct {
code int
}
func (e *myError) Error() string {
return fmt.Sprintf("%d", e.code)
}
func (e *myError) Is(target error) bool {
te, ok := target.(*myError)
if ok == false {
return false
}
return e.code == te.code
}
func someFunction() error {
ec := chain.New()
ec.Add(errors.New("some error"))
ec.Add(fmt.Errorf("wrap it up %w", &myError{code: 12}))
return ec
}
func otherFunction() {
err := someFunction()
if errors.Is(err, &myError{code: 12}) {
fmt.Println("got an error")
}
}
func main() {
fmt.Println("runing the error chain example")
otherFunction()
}
Output:
▶ go run *.go
runing the error chain example
got an error
Documentation
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Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type ErrorChain ¶
type ErrorChain struct {
// contains filtered or unexported fields
}
ErrorChain will chain multiple errors
func (*ErrorChain) Add ¶
func (e *ErrorChain) Add(err error)
Add will place another error in the chain
func (*ErrorChain) Error ¶
func (e *ErrorChain) Error() string
func (*ErrorChain) Errors ¶
func (e *ErrorChain) Errors() []error
Errors will return the errors in the chain
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