errors

package
v1.2.22 Latest Latest
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Published: May 30, 2022 License: MIT Imports: 6 Imported by: 7

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Index

Examples

Constants

This section is empty.

Variables

View Source
var ErrIgnore = errors.New("error can be ignored")
View Source
var ErrorHandlers = []func(error){
	func() func(err error) {
		limiter := rate.NewLimiter(rate.Every(time.Millisecond), 1)
		return func(err error) {

			_ = limiter.Wait(context.Background())
		}
	}(),
}

ErrorHandlers is a list of functions which will be invoked when a nonreturnable error occurs. should be packaged up into a testable and reusable object.

Functions

func HandleError

func HandleError(err error)

HandleError is a method to invoke when a non-user facing piece of code cannot return an error and needs to indicate it has been ignored. Invoking this method is preferable to logging the error - the default behavior is to log but the errors may be sent to a remote server for analysis.

func Mark

func Mark(err error, marks ...error) error

Mark returns an error with the supplied errors as marks. If err is nil, return nil. marks take effects only when Is and '%v' in fmt. Is returns true if err or any marks match the target.

Example
package main

import (
	"fmt"

	errors_ "github.com/searKing/golang/go/errors"
)

func main() {
	err := errors_.Mark(nil, nil)
	fmt.Println(err)
	fmt.Println("-----")
	err = errors_.Mark(fmt.Errorf("whoops"), nil)
	fmt.Println(err)
	fmt.Println("-----")
	err = errors_.Mark(fmt.Errorf("whoops"), fmt.Errorf("foo"))
	fmt.Println(err)
	fmt.Println("-----")
	err = errors_.Mark(fmt.Errorf("whoops"), fmt.Errorf("foo"), fmt.Errorf("bar"))
	fmt.Println(err)
	fmt.Println("-----")
	err = errors_.Mark(err, fmt.Errorf("alice"), fmt.Errorf("bob"))
	fmt.Println(err)
	fmt.Println("-----")

}
Output:

<nil>
-----
whoops
-----
whoops
-----
whoops
-----
whoops
-----

func Multi

func Multi(errs ...error) error

Multi returns an error with the supplied errors. If no error contained, return nil.

Example
package main

import (
	"fmt"

	errors_ "github.com/searKing/golang/go/errors"
)

func main() {
	err := errors_.Multi(nil, nil)
	fmt.Println(err)
	fmt.Println("-----")
	err = errors_.Multi(fmt.Errorf("whoops"), nil)
	fmt.Println(err)
	fmt.Println("-----")
	err = errors_.Multi(fmt.Errorf("whoops"), fmt.Errorf("foo"))
	fmt.Println(err)
	fmt.Println("-----")

}
Output:

<nil>
-----
whoops
-----
whoops|foo
-----

func Must

func Must(err error)

Must panics if err != nil

Types

This section is empty.

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