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example.go
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example.go
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package main
import (
"fmt"
"github.com/bin-work/go-example/pkg/errors"
)
func ExampleErrorNew() {
newerr := errors.New("cuowu")
fmt.Println("===============%s===================")
fmt.Printf("new %s\n", newerr) //new cuowu
fmt.Println("===============%v===================")
fmt.Printf("new %v\n", newerr) //new cuowu
fmt.Println("===============%+v===================")
fmt.Printf("new %+v\n", newerr)
//new cuowu
//main.main
// D:/workspace/kds/base_package/errors/example/example.go:9
//runtime.main
// D:/dev/go1.17.5/src/runtime/proc.go:255
//runtime.goexit
// D:/dev/go1.17.5/src/runtime/asm_amd64.s:1581
fmt.Println("===============%#+v===================")
fmt.Printf("new %#+v\n", newerr)
//new cuowu
//main.main
// D:/workspace/kds/base_package/errors/example/example.go:9
//runtime.main
// D:/dev/go1.17.5/src/runtime/proc.go:255
//runtime.goexit
// D:/dev/go1.17.5/src/runtime/asm_amd64.s:1581
fmt.Println("===============%-v===================")
fmt.Printf("new %-v\n", newerr) //new cuowu
fmt.Println("===============%#-v===================")
fmt.Printf("new %#-v\n", newerr) //new cuowu
}
func ExampleErrorErrorf() {
artile := "斗破苍穹"
id := 10086
errorferr := errors.Errorf("ID:%d 文章:%s", id, artile)
fmt.Println("===============%s===================")
fmt.Printf("errorf %s\n", errorferr) //errorf ID:10086 文章:斗破苍穹
fmt.Println("===============%v===================")
fmt.Printf("errorf %v\n", errorferr) //errorf ID:10086 文章:斗破苍穹
fmt.Println("===============%+v===================")
fmt.Printf("errorf %+v\n", errorferr) //errorf ID:10086 文章:斗破苍穹
//main.ExampleErrorErrorf
// D:/workspace/kds/base_package/errors/example/example.go:48
//main.main
// D:/workspace/kds/base_package/errors/example/example.go:65
//runtime.main
// D:/dev/go1.17.5/src/runtime/proc.go:255
//runtime.goexit
// D:/dev/go1.17.5/src/runtime/asm_amd64.s:1581
fmt.Println("===============%#+v===================")
fmt.Printf("errorf %#+v\n", errorferr) //errorf ID:10086 文章:斗破苍穹
//main.ExampleErrorErrorf
// D:/workspace/kds/base_package/errors/example/example.go:48
//main.main
// D:/workspace/kds/base_package/errors/example/example.go:65
//runtime.main
// D:/dev/go1.17.5/src/runtime/proc.go:255
//runtime.goexit
// D:/dev/go1.17.5/src/runtime/asm_amd64.s:1581
fmt.Println("===============%-v===================")
fmt.Printf("errorf %-v\n", errorferr) //errorf ID:10086 文章:斗破苍穹
fmt.Println("===============%#-v===================")
fmt.Printf("errorf %#-v\n", errorferr) //errorf ID:10086 文章:斗破苍穹
}
func ExampleErrorWrap() {
err := errors.New("first error")
wraperr := errors.Wrap(err, "wrap error")
fmt.Println("===============%s===================")
fmt.Printf("Wrap %s\n", wraperr) //Wrap wrap error
fmt.Println("===============%v===================")
fmt.Printf("Wrap %v\n", wraperr) //Wrap wrap error
fmt.Println("===============%+v===================")
fmt.Printf("Wrap %+v\n", wraperr)
//Wrap first error
//main.ExampleErrorWrap
// D:/workspace/kds/base_package/errors/example/example.go:85
//main.main
// D:/workspace/kds/base_package/errors/example/example.go:126
//runtime.main
// D:/dev/go1.17.5/src/runtime/proc.go:255
//runtime.goexit
// D:/dev/go1.17.5/src/runtime/asm_amd64.s:1581
//wrap error
//main.ExampleErrorWrap
// D:/workspace/kds/base_package/errors/example/example.go:86
//main.main
// D:/workspace/kds/base_package/errors/example/example.go:126
//runtime.main
// D:/dev/go1.17.5/src/runtime/proc.go:255
//runtime.goexit
// D:/dev/go1.17.5/src/runtime/asm_amd64.s:1581
fmt.Println("===============%#+v===================")
fmt.Printf("Wrap %#+v\n", wraperr)
//Wrap first error
//main.ExampleErrorWrap
// D:/workspace/kds/base_package/errors/example/example.go:85
//main.main
// D:/workspace/kds/base_package/errors/example/example.go:126
//runtime.main
// D:/dev/go1.17.5/src/runtime/proc.go:255
//runtime.goexit
// D:/dev/go1.17.5/src/runtime/asm_amd64.s:1581
//wrap error
//main.ExampleErrorWrap
// D:/workspace/kds/base_package/errors/example/example.go:86
//main.main
// D:/workspace/kds/base_package/errors/example/example.go:126
//runtime.main
// D:/dev/go1.17.5/src/runtime/proc.go:255
//runtime.goexit
// D:/dev/go1.17.5/src/runtime/asm_amd64.s:1581
fmt.Println("===============%-v===================")
fmt.Printf("Wrap %-v\n", wraperr) //Wrap wrap error
fmt.Println("===============%#-v===================")
fmt.Printf("Wrap %#-v\n", wraperr) //Wrap wrap error
}
func ExampleErrorWrapf() {
err := errors.New("first error")
wrapferr := errors.Wrapf(err, "wrapf error #%d", 2)
fmt.Println("===============%s===================")
fmt.Printf("Wrapf %s\n", wrapferr) //Wrapf wrapf error #2
fmt.Println("===============%v===================")
fmt.Printf("Wrapf %v\n", wrapferr) //Wrapf wrapf error #2
fmt.Println("===============%+v===================")
fmt.Printf("Wrapf %+v\n", wrapferr)
//Wrapf first error
//main.ExampleErrorWrapf
// D:/workspace/kds/base_package/errors/example/example.go:144
//main.main
// D:/workspace/kds/base_package/errors/example/example.go:207
//runtime.main
// D:/dev/go1.17.5/src/runtime/proc.go:255
//runtime.goexit
// D:/dev/go1.17.5/src/runtime/asm_amd64.s:1581
//wrapf error #2
//main.ExampleErrorWrapf
// D:/workspace/kds/base_package/errors/example/example.go:145
//main.main
// D:/workspace/kds/base_package/errors/example/example.go:207
//runtime.main
// D:/dev/go1.17.5/src/runtime/proc.go:255
//runtime.goexit
// D:/dev/go1.17.5/src/runtime/asm_amd64.s:1581
fmt.Println("===============%#+v===================")
fmt.Printf("Wrapf %#+v\n", wrapferr)
//Wrapf first error
//main.ExampleErrorWrapf
// D:/workspace/kds/base_package/errors/example/example.go:144
//main.main
// D:/workspace/kds/base_package/errors/example/example.go:207
//runtime.main
// D:/dev/go1.17.5/src/runtime/proc.go:255
//runtime.goexit
// D:/dev/go1.17.5/src/runtime/asm_amd64.s:1581
//wrapf error #2
//main.ExampleErrorWrapf
// D:/workspace/kds/base_package/errors/example/example.go:145
//main.main
// D:/workspace/kds/base_package/errors/example/example.go:207
//runtime.main
// D:/dev/go1.17.5/src/runtime/proc.go:255
//runtime.goexit
// D:/dev/go1.17.5/src/runtime/asm_amd64.s:1581
fmt.Println("===============%-v===================")
fmt.Printf("Wrapf %-v\n", wrapferr) //Wrapf wrapf error #2
fmt.Println("===============%#-v===================")
fmt.Printf("Wrapf %#-v\n", wrapferr) //Wrapf wrapf error #2
}
func ExampleErrorWithStack() {
err := errors.New("first error")
withStackErr := errors.WithStack(err)
fmt.Println("===============%s===================")
fmt.Printf("WithStack %s\n", withStackErr) //WithStack first error
fmt.Println("===============%v===================")
fmt.Printf("WithStack %v\n", withStackErr) //WithStack first error
fmt.Println("===============%+v===================")
fmt.Printf("WithStack %+v\n", withStackErr)
//WithStack first error
//main.ExampleErrorWithStack
// D:/workspace/kds/base_package/errors/example/example.go:203
//main.main
// D:/workspace/kds/base_package/errors/example/example.go:267
//runtime.main
// D:/dev/go1.17.5/src/runtime/proc.go:255
//runtime.goexit
// D:/dev/go1.17.5/src/runtime/asm_amd64.s:1581
//main.ExampleErrorWithStack
// D:/workspace/kds/base_package/errors/example/example.go:204
//main.main
// D:/workspace/kds/base_package/errors/example/example.go:267
//runtime.main
// D:/dev/go1.17.5/src/runtime/proc.go:255
//runtime.goexit
// D:/dev/go1.17.5/src/runtime/asm_amd64.s:1581
fmt.Println("===============%#+v===================")
fmt.Printf("WithStack %#+v\n", withStackErr)
//WithStack first error
//main.ExampleErrorWithStack
// D:/workspace/kds/base_package/errors/example/example.go:203
//main.main
// D:/workspace/kds/base_package/errors/example/example.go:267
//runtime.main
// D:/dev/go1.17.5/src/runtime/proc.go:255
//runtime.goexit
// D:/dev/go1.17.5/src/runtime/asm_amd64.s:1581
//main.ExampleErrorWithStack
// D:/workspace/kds/base_package/errors/example/example.go:204
//main.main
// D:/workspace/kds/base_package/errors/example/example.go:267
//runtime.main
// D:/dev/go1.17.5/src/runtime/proc.go:255
//runtime.goexit
// D:/dev/go1.17.5/src/runtime/asm_amd64.s:1581
fmt.Println("===============%-v===================")
fmt.Printf("WithStack %-v\n", withStackErr) //WithStack first error
fmt.Println("===============%#-v===================")
fmt.Printf("WithStack %#-v\n", withStackErr) //WithStack first error
}
func ExampleErrorWithMessage() {
err := errors.New("first error")
withMessageErr := errors.WithMessage(err, "with message")
fmt.Println("===============%s===================")
fmt.Printf("WithMessage %s\n", withMessageErr) //WithMessage with message
fmt.Println("===============%v===================")
fmt.Printf("WithMessage %v\n", withMessageErr) //WithMessage with message
fmt.Println("===============%+v===================")
fmt.Printf("WithMessage %+v\n", withMessageErr)
//WithMessage first error
//main.ExampleErrorWithMessage
// D:/workspace/kds/base_package/errors/example/example.go:259
//main.main
// D:/workspace/kds/base_package/errors/example/example.go:322
//runtime.main
// D:/dev/go1.17.5/src/runtime/proc.go:255
//runtime.goexit
// D:/dev/go1.17.5/src/runtime/asm_amd64.s:1581
//with message
fmt.Println("===============%#+v===================")
fmt.Printf("WithMessage %#+v\n", withMessageErr)
//WithMessage first error
//main.ExampleErrorWithMessage
// D:/workspace/kds/base_package/errors/example/example.go:259
//main.main
// D:/workspace/kds/base_package/errors/example/example.go:322
//runtime.main
// D:/dev/go1.17.5/src/runtime/proc.go:255
//runtime.D:/dev/go1.17.5/src/runtime/asm_amd64.s:1581
//with message
fmt.Println("===============%-v===================")
fmt.Printf("WithMessage %-v\n", withMessageErr) //WithMessage with message
fmt.Println("===============%#-v===================")
fmt.Printf("WithMessage %#-v\n", withMessageErr) //WithMessage with message
}
func ExampleErrorWithMessagef() {
err := errors.New("first error")
withMessagefErr := errors.WithMessagef(err, "with message,#%d", 2)
fmt.Println("===============%s===================")
fmt.Printf("withMessagefErr %s\n", withMessagefErr) //withMessagefErr with message,#2
fmt.Println("===============%v===================")
fmt.Printf("withMessagefErr %v\n", withMessagefErr) //withMessagefErr with message,#2
fmt.Println("===============%+v===================")
fmt.Printf("withMessagefErr %+v\n", withMessagefErr)
//withMessagefErr first error
//main.ExampleErrorWithMessagef
// D:/workspace/kds/base_package/errors/example/example.go:301
//main.main
// D:/workspace/kds/base_package/errors/example/example.go:351
//runtime.main
// D:/dev/go1.17.5/src/runtime/proc.go:255
//runtime.goexit
// D:/dev/go1.17.5/src/runtime/asm_amd64.s:1581
//with message,#2
fmt.Println("===============%#+v===================")
fmt.Printf("withMessagefErr %#+v\n", withMessagefErr)
//withMessagefErr first error
//main.ExampleErrorWithMessagef
// D:/workspace/kds/base_package/errors/example/example.go:301
//main.main
// D:/workspace/kds/base_package/errors/example/example.go:351
//runtime.main
// D:/dev/go1.17.5/src/runtime/proc.go:255
//runtime.D:/dev/go1.17.5/src/runtime/asm_amd64.s:1581
//with message,#2
fmt.Println("===============%-v===================")
fmt.Printf("withMessagefErr %-v\n", withMessagefErr) //withMessagefErr with message,#2
fmt.Println("===============%#-v===================")
fmt.Printf("withMessagefErr %#-v\n", withMessagefErr) //withMessagefErr with message,#2
}
const (
// Error codes below 1000 are reserved future use by the
// "github.com/bdlm/errors" package.
ConfigurationNotValid int = iota + 1000
ErrInvalidJSON
ErrEOF
ErrLoadConfigFailed
)
type defaultCoder struct {
// C refers to the integer code of the ErrCode.
C int
// External (user) facing error text.
Ext string
}
// Code returns the integer code of the coder.
func (coder defaultCoder) Code() int {
return coder.C
}
// String implements stringer. String returns the external error message,
// if any.
func (coder defaultCoder) String() string {
return coder.Ext
}
func init() {
errors.Register(defaultCoder{ConfigurationNotValid, "ConfigurationNotValid error"})
errors.Register(defaultCoder{ErrInvalidJSON, "Data is not valid JSON"})
errors.Register(defaultCoder{ErrEOF, "End of input"})
errors.Register(defaultCoder{ErrLoadConfigFailed, "Load configuration file failed"})
}
func ExampleErrorWithCode() {
withCodeErr := errors.WithCode(ConfigurationNotValid, "error with code, %s", "none")
fmt.Println("===============%s===================")
fmt.Printf("WithCode %s\n", withCodeErr) //WithCode ConfigurationNotValid error
fmt.Println("===============%v===================")
fmt.Printf("WithCode %v\n", withCodeErr) //WithCode ConfigurationNotValid error
fmt.Println("===============%+v===================")
fmt.Printf("WithCode %+v\n", withCodeErr)
//WithCode error with code, none - #0 [D:/workspace/kds/base_package/errors/example/example.go:379 (main.ExampleErrorWithCode)] (1000) ConfigurationNotValid error
fmt.Println("===============%#+v===================")
fmt.Printf("WithCode %#+v\n", withCodeErr)
//WithCode [{"caller":"#0 D:/workspace/kds/base_package/errors/example/example.go:379 (main.ExampleErrorWithCode)","code":1000,"error":"error with code, none","message":"ConfigurationNotValid error"}]
fmt.Println("===============%-v===================")
fmt.Printf("WithCode %-v\n", withCodeErr)
//WithCode error with code, none - #0 [D:/workspace/kds/base_package/errors/example/example.go:379 (main.ExampleErrorWithCode)] (1000) ConfigurationNotValid error
fmt.Println("===============%#-v===================")
fmt.Printf("WithCode %#-v\n", withCodeErr)
//WithCode [{"caller":"#0 D:/workspace/kds/base_package/errors/example/example.go:379 (main.ExampleErrorWithCode)","code":1000,"error":"error with code, none","message":"ConfigurationNotValid error"}]
}
func ExampleErrorWithC() {
err := errors.New("NO valid")
wrapCErr := errors.WrapC(err, ConfigurationNotValid, "配置无效")
fmt.Println("===============%s===================")
fmt.Printf("WrapC %s\n", wrapCErr) //WrapC ConfigurationNotValid error
fmt.Println("===============%v===================")
fmt.Printf("WrapC %v\n", wrapCErr) //WrapC ConfigurationNotValid error
fmt.Println("===============%+v===================")
fmt.Printf("WrapC %+v\n", wrapCErr)
//WrapC 配置无效 - #1 [D:/workspace/kds/base_package/errors/example/example.go:406 (main.ExampleErrorWithC)] (1000) ConfigurationNotValid error; NO valid - #0 [D:/workspace/kds/base_package/errors/example/example.go:405 (main.ExeErrorWithC)] (1) NO valid
fmt.Println("===============%#+v===================")
fmt.Printf("WrapC %#+v\n", wrapCErr)
//WrapC [{"caller":"#1 D:/workspace/kds/base_package/errors/example/example.go:406 (main.ExampleErrorWithC)","code":1000,"error":"配置无效","message":"ConfigurationNotValid error"},{"caller":"#0 D:/workspace/kds/base_package/errexample/example.go:405 (main.ExampleErrorWithC)","code":1,"error":"NO valid","message":"NO valid"}]
fmt.Println("===============%-v===================")
fmt.Printf("WrapC %-v\n", wrapCErr)
//WrapC 配置无效 - #1 [D:/workspace/kds/base_package/errors/example/example.go:406 (main.ExampleErrorWithC)] (1000) ConfigurationNotValid error
fmt.Println("===============%#-v===================")
fmt.Printf("WrapC %#-v\n", wrapCErr)
//WrapC [{"caller":"#1 D:/workspace/kds/base_package/errors/example/example.go:406 (main.ExampleErrorWithC)","code":1000,"error":"配置无效","message":"ConfigurationNotValid error"}]
}
func main() {
//err := fmt.Errorf("aasd")
//fmt.Printf("%+v", err)
//ExampleErrorNew()
//ExampleErrorErrorf()
//ExampleErrorWrap()
//ExampleErrorWrapf()
//ExampleErrorWithStack()
//ExampleErrorWithMessage()
//ExampleErrorWithMessagef()
//ExampleErrorWithCode()
ExampleErrorWithC()
}