func (l *slog) Errorf(format string, args ...interface{}) {
	lvl := l.Level()
	if lvl <= LevelError {
		l.b.printf("ERR", l.tag, format, args...)
	}
}
func (l *slog) Errorf(format string, args ...interface{}) {
	lvl := l.Level()
	if lvl <= LevelError {
		l.b.printf("ERR", l.tag, format, args...)
	}
}
func ( l * slog ) Errorf ( format string , args ... interface { } ) { lvl := l . Level ( ) if lvl <= LevelError { l . b . printf ( " " , l . tag , format , args ... ) } }
// Errorf formats message according to format specifier, prepends the prefix as
// necessary, and writes to log with LevelError.
//
// This is part of the Logger interface implementation.
Errorf formats message according to format specifier prepends the prefix as necessary and writes to log with LevelError . This is part of the Logger interface implementation .