VS Code Go Snippets
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This extension contains code snippets for Go language in VS 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)
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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honnamkuan
honnamkuan