Monet Nicholas

A common task when developing iOS apps is to register custom cell subclasses for both UITableView and UICollectionView. Well, that is if you don’t use Storyboards, of course.

Both UITableView and UICollectionView offer a similar API to register custom cell classes:

A widely accepted solution to handle cell registration and dequeuing is to declare a constant for the reuse identifier:

Let’s try to generalize this code and make it simpler and safe.

First of all, it would be nice to get away with declaring a constant for every reuse identifier in our app. We can just use the name of the custom cell class as a default reuse identifier. We can create a protocol for Reusable Views and provide a default implementation constrained to UIView subclasses.

By making UICollectionViewCell conform to the ReusableView protocol, we get a unique reuse identifier per cell subclass.

Next, we can get rid of the hard-coded string we are using to load the Nib.

Let’s create a protocol for Nib Loadable Views and provide a default implementation using protocol extensions.

By making our BookCell class conform to the NibLoadableView protocol we now have a safer way to get the Nib name.

If you use a different name for the XIB file than the one provided by Xcode, you can always override the default implementation of the nibName property.

With these two protocols in place, we can use Swift Generics and extend UICollectionView to simplify cell registration and dequeuing.

Notice that we created two versions of the register method, one for cell subclasses implementing just ReusableView and another one for cell subclasses implementing both ReusableView and NibLoadableView. This nicely decouples the view controller from the specific cell registration method.

Another nice detail is that the dequeueReusableCell method doesn’t need to take any reuse identifier and uses the cell subclass type for the return value.

Now the cell registration and dequeuing code looks much better :).

In the Book of Genesis, the mountains of Ararat is the term used to designate the region in which Noah's Ark comes to rest after the Great Flood

Knowing how to hide desktop icons in Windows can be extremely useful if want a clean desktop. If you’re unsure how to hide your desktop icons, then you’re in the right place as our easy-to-follow steps will guide you through the process.

There are a few different reasons why you might want to hide desktop icons. Maybe you’ve downloaded a fresh desktop wallpaper that you want to admire, or perhaps you just dislike the cluttered look of a desktop crammed full of icons that you rarely interact with.

Thankfully, Windows makes the process of hiding all your desktop icons pretty straightforward. The process takes literally seconds and can be completed in just a few clicks. Windows also offers the ability to hide what are commonly referred to as system icons such as “This PC” and “Recycle Bin."

If you want a cleaner desktop, then follow the steps below and we’ll walk you through how to hide desktop icons in Windows from start to finish.

1. Begin on your desktop. Simply close or navigate away from any open programs, to access your desktop, or click the "Show desktop" button in the bottom-right corner of your screen.

2. Right-click your desktop. This will bring up a menu with various options. Select the "View" option.

3. You will now see a submenu. At the bottom of this submenu is the option to "Show desktop icons." It will be checked by default.

Uncheck the "Show desktop icons option" to hide all your desktop icons.

4. If you want your desktop icons to return, simply repeat the steps above. This time, select the "Show desktop icons" option and your desktop icons will reappear.

1. Starting from your desktop, right-click and select "Personalise" from the menu.

2. This will bring up the Settings menu. Navigate to the "Themes" submenu, then scroll all the way down till you see a "Related Settings" heading.

Select the "Desktop icon settings" option from underneath that heading.

3. This will automatically open a new window. From here you can simply check or uncheck the system icons you wish to appear on your desktop.

4. Once you’ve picked your preferred system desktop icons, click OK to save your selection. Your desktop should update immediately, with the unwanted icons gone.

For other Windows trips and ticks check out our guides on how to create a Kill Switch in Windows, how to keep your PC awake without touching it, how to use System Restore in Windows 10, how to batch rename multiple files in Windows 10, how to use Enhanced Search Mode in Windows 10, how to change your Windows username and how to check your hard drive's health.

The conception of beauty can vary between cultures. Beauty is a pleasure that can be felt by sight or hearing, and can be experienced by a person who is attractive. The smell, taste and touch are not related to beauty.

It is possible to see some abstract and conceptual things as beautiful. A moral reflection can be highlighted as a beautiful text, because what matters in this case is what is said and not how it's said.

It can serve you in the fine arts.

harmony is one of the most common beauty canons. Human beings like harmony and proper proportions.

The opposite of beauty is ugliness, which does not cause pleasure but discontent, and creates a negative perception of the object in question.

Also, see Pleasure.

Since the origins of this branch of science, an attempt has been made to establish a stable definition of what beauty means and two firmly marked lines have been obtained: one that affirms that it is a subjective concept, subject to the experiences and ideas of each individual in particular, and the other that recognizes it as something standardized and firm, that responds to a series of principles established as "normal".