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VS Code Go Snippets

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This extension contains code snippets for Go language in [VS Code][code].

Installation

In order to install an extension you need to launch the Command Palette (Ctrl + Shift + P or Cmd + Shift + P) and type Extensions. There you have either the option to show the already installed snippets or install new ones. Search for honnamkuan.golang-snippets and install it.

Supported languages (file extensions)

• Go (.go)

Snippets

Below is a list of all available snippets and the triggers of each one.

General

| Prefix | Content |

| vv | initialize variable varName := value| | ier | if error if err != nil { myStatements } | | ifok | if ok if value,ok := myFunc; ok { myStatements } | | fr | for range for _, v := range values { myStatements }| | frr | for range channel for v := range channel { myStatements }| | def | case default default: | | cl | close close(closable) | | fms | fmt Sprintf fmt.Sprintf("%+v", args) | | fme | fmt Errorf fmt.Errorf("%+v", args) | | ctx | ctx context.Context |

Types

| Prefix | Content |

| st | struct type type structName struct { }

| | sf | struct field fieldName string| | stt | struct tag ` json:"jsonFieldName" `| | ne | struct constructor method func NewFoo() *Foo{ return &Foo { } }

| | inte | Interface type type interfaceName interface { }|

Collection manipulation

| Prefix | Content |

| sr | remove one element from slice slice = append(slice[:index], slice[index+1:]...) | | ap | append element to slice slice = append(slice, element) | | del | delete map element by key delete(map, key)|

Return values

| Prefix | Content |

| rn | Return Nil return nil| | rne | Return Nil and err return nil, err| | re | Return err return err|

Logging

| Prefix | Content |

| lo | log variable log.Printf("%+v\n", varName) | | le | log error log.Printf("%+v\n", err) | | lef | log error (when using logrus) log.Errorf("%+v\n", err) | | lf | log fatal log.Fatal(err) | | lff | log fatal log.Fatalf("%+v\n", err) |

Error Handling

| Prefix | Content |

| es | errors with stack errors.WithStack(err)| | em | error with message errors.WithMessage(err, message)| | emf | error with messagef errors.WithMessagef(err, format, args)| | is | errors Is if errors.Is(err, MyError) { myStatements }| | as | errors As var e ErrorType errors.As(err, &e) { myStatements }

|

Concurrency

| Prefix | Content |

| gofunc | anonymous go function go func() { myStatements } | | defunc | anonymous defer function defer func { myStatements }| | lock | sync.Mutex Lock and defer Unlock mu.Lock() defer mu.Unlock()

| | nb | non-blocking channel send select { case msg <- msgChan: default: }

|

Testify Assert

| Prefix | Content |

| anil | assert nil assert.Nil(t, actual) | | annil | assert not nil assert.NotNil(t, actual) | | aeq | assert equal assert.Equal(t, expected, actual) | | anerr | assert no error assert.NoError(t, err) |

Import

| Prefix | Content |

| logrus | import logrus log "github.com/sirupsen/logrus" |

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