defers

Documentation

Index

• func Collect(f func() error, dst *error)

Examples

• Collect

Functions

func Collect

func Collect(f func() error, dst *error)

Example

package main

import (
	"errors"
	"fmt"

	"github.com/xoctopus/x/misc/defers"
)

func main() {
	var err error

	func() {
		fmt.Println("Single:")
		defer func() { fmt.Println(err) }()

		defer defers.Collect(func() error { return errors.New("a") }, &err)
	}()

	err = nil
	func() {
		fmt.Println("Multi:")
		defer func() { fmt.Println(err) }()

		defer defers.Collect(func() error { return errors.New("d") }, &err)
		defer defers.Collect(func() error { return errors.New("c") }, &err)
		defer defers.Collect((&closer{"b"}).Close, &err)
		defer defers.Collect((&closer{"a"}).Close, &err)
	}()

}

type closer struct{ name string }

func (c *closer) Close() error { return errors.New(c.name) }

Output:

Single:
a
Multi:
a
b
c
d