func AppendArg(b []byte, v interface{}) []byte
func GetAddr(addr string) string
func ReplaceSpaces(s string) string
func RetryBackoff(retry int, minBackoff, maxBackoff time.Duration) time.Duration
func Sleep(ctx context.Context, dur time.Duration) error
func ToFloat(val interface{}) float64
func ToInteger(val interface{}) int
func ToLower(s string) string
func ToString(val interface{}) string
func ToStringSlice(val interface{}) []string
type Logging interface {
Printf(ctx context.Context, format string, v ...interface{})
}
Logger calls Output to print to the stderr. Arguments are handled in the manner of fmt.Print.
var Logger Logging = &logger{ log: log.New(os.Stderr, "redis: ", log.LstdFlags|log.Lshortfile), }
A Once will perform a successful action exactly once.
Unlike a sync.Once, this Once's func returns an error and is re-armed on failure.
type Once struct {
// contains filtered or unexported fields
}
func (o *Once) Do(f func() error) error
Do calls the function f if and only if Do has not been invoked without error for this instance of Once. In other words, given
var once Once
if once.Do(f) is called multiple times, only the first call will invoke f, even if f has a different value in each invocation unless f returns an error. A new instance of Once is required for each function to execute.
Do is intended for initialization that must be run exactly once. Since f is niladic, it may be necessary to use a function literal to capture the arguments to a function to be invoked by Do:
err := config.once.Do(func() error { return config.init(filename) })
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