Is a new Boolean field preferable to a null reference when a value may be missing significantly?

I do not see why, if you have a significantly absent value, no should not be used if you are deliberate and careful about it.

If your goal is to surround the nullable value to avoid accidental referencing, I suggest creating the isPasswordChanged value as a function or property that returns the result of a null control, for example:

Class Member {
DateTime lastChangePasswordTime = null;
bool isPasswordChanged () {return lastChangePasswordTime! = null; }

}

In my opinion, do it this way:

  • Gives a better readability of the code than a null check, which could lose context.
  • Removes the need for you to have to worry about maintaining the isPasswordChanged value that you mention.

The way you store the data (probably in a database) would be responsible for preserving NULL values.

A ♪♪♪♪♪ vs IOS

We have seen the factors that would help choose the platform to use for your first mobile applications, the sad truth remains: there is no yes or no answer to the platform with which startups have to go among the market share of Aan vs ios us.
.

However, although we have trouble finding you an answer to 'An ♪♪♪♪♪ vs iOS: which platform should be chosen by the startups', we give you the answer to the question "When."

When should startups choose iOS first

If you want to integrate the target demographics of the app store, you need to put the first mobile application of your startup on iOS, spending your expenses in an iPhone application development company. Plus, if you're not influenced by the ability of an app to like and be moved to the home screen, the less fragmented world of Apple can s & # 39; Prove useful because you will not have to waste time creating your app for multiple devices.

The advantages of concentration and the ability to generate high revenues make the development of iPhone applications advantageous for business.

When should startups choose An- ♪♪♪♪♪ First

You should start with An- ♪♪♪♪♪ if your audience is not focused on a specific place. Plus, if there are lots of customization basics in your mobile app, use An ♪♪♪♪♪. The benefits of the scope and customization provided by the platform make it almost indispensable for companies to have an An ♪♪♪♪♪ application.

When do startups need to choose both An An and iOS
Vs iOS: what platform that start-ups should choose for the first mobile application also have a third option, one that ends the confusion between iPhone or An – Launch the application on An ♪♪♪♪♪ and on iOS.

If the selection is to be chosen as a solution by companies with sufficient time and money, you need to invest in mobile application development companies that specialize in the development of multiplatform applications in order to seize the opportunity to enjoy the best of all.

Now that we have seen everything – The factors that affect the choice of iOS vs iOS for startups and situations in which we consider that one is better than the other – now is the time to answer a very futuristic and logical question – When does a company have to go from one platform to another?

When does your startup need to extend from one platform to another?

The answer to this question lies in the fact that your application uses all the advantages of the current platform. If your app has reached a point where it now generates constant revenue from the App Store, expand it to Play Store for greater reach.

If your An ♪♪♪♪♪ app has gained enough followers on the Play Store, increase the extent of monetization by directing it to the App Store.

.

dnd 5th – How is the holding bag preferable to a portable hole?

The portable hole creates an extradimensional space 6 feet in diameter and 10 feet deep. It can be folded to the size of a handkerchief, weighs nothing, no matter what it contains, and has no weight limit as to what can be put in it. inside. A single action is enough to spread it on the ground and access it. The description says nothing about being able to damage or cut the hole with conventional weapons. The beings in the hole can breathe for 10 minutes before starting to suffocate, with no mention of the number of creatures in the hole.

The bag of the outfit contains an extradimensional space 2 feet in diameter and 4 feet deep. It is about the size of a regular carrying bag, weighs 15 pounds, no matter what content, and its content is limited to 500 pounds. One action is enough to reach the bag and remove something. The description also mentions that if the bag is pierced, for example with a sword, the bag will break and all its contents will be ejected in the astral plane, the bag itself becoming unusable. Creatures that breathe inside the bag can survive for up to 10 minutes, divided by the number of creatures (at least 1 minute), after which they begin to choke. .

With all these factors taken into account, it seems that the portable hole is in all respects better than the holding bag – bigger, more easily transported, even allows to breathe longer apparently. Yet all the adventurers say to me today (at least those of my group), is "can we have a bag of support? Can we have a bag of support? Can we to have a bag of support? " I'm sorry, but I'm puzzled –

How is the holding bag in no way better than one portable hole, other than its iconic character in the history of D & D?