func(d *Data)GetViews(key int, chechDay time.Time) (int, int, err) { d.mu.Lock() defer d.mu.Unlock() infoStr, ok := d.st[key] if !ok { return 0, fmt.Errorf("article not found") } return (infoStr.day, infoStr.count, nil) }

The provided code has several errors and inaccuracies:

1. The function signature is incorrect: the return values are specified as (int, int, err), where err should be of type error.
2. In return 0, fmt.Errorf("article not found"), two values are returned, but three are expected.
3. In return (infoStr.day, infoStr.count, nil), the parentheses are unnecessary, and infoStr.day may not match the type checkDay.

A corrected version of the function could look like this:

func (d *Data) GetViews(key int, checkDay time.Time) (int, int, error) {
    d.mu.Lock()
    defer d.mu.Unlock()

    infoStr, ok := d.st[key]
    if !ok {
        return 0, 0, fmt.Errorf("article not found")
    }

    // Assuming infoStr.day has type time.Time
    if !infoStr.day.Equal(checkDay) {
        return 0, 0, fmt.Errorf("data for the specified day not found")
    }

    return infoStr.dayViews, infoStr.count, nil
}

Here:

• infoStr.dayViews is the number of views for the day,
• infoStr.count is the total number of views,
• the function returns an error if the key is not found or the date does not match.

It is also important that the mutex mu protects access to the map st for thread safety.