errorkitlite

func As ¶

func As[T error](err error) (T, bool)

As function serves as a shorthand to enable one-liner error handling with errors.As. It's meant to be used within an if statement, much like Lookup functions such as os.LookupEnv.

package main

import (
	"fmt"

	"go.llib.dev/frameless/internal/errorkitlite"
)

type MyError struct {
	Msg string
}

func (err MyError) Error() string {
	return err.Msg
}

func main() {
	var err error // some error to be checked

	if err, ok := errorkitlite.As[MyError](err); ok {
		fmt.Println(err.Msg)
	}
}

func Finish ¶

func Finish(returnErr *error, blk func() error)

Finish is a helper function that can be used from a deferred context.

Usage:

defer errorkit.Finish(&returnError, rows.Close)

func FinishOnError ¶

func FinishOnError(returnErr *error, blk func())

FinishOnError is a helper function that can be used from a deferred context. It runs the block conditionally, when the return error, which was assigned by the `return` keyword is not nil.

Usage:

defer errorkit.FinishOnError(&returnError, func() { rollback(ctx) })

func Merge ¶

func Merge(errs ...error) error

Merge will combine all given non nil error values into a single error value. If no valid error is given, nil is returned. If only a single non nil error value is given, the error value is returned.

func MergeErrFunc ¶

func MergeErrFunc(errFuncs ...ErrFunc) func() error

func NullErrFunc ¶

func NullErrFunc() error

func Recover ¶

func Recover(returnErr *error)

Recover will attempt a recover, and if recovery yields a value, it sets it as an error.