Have you ever wondered what MVC means in programming or how it really works? MVC stands for Model, View, Controller, and it is an architectural paradigm used by many web frameworks such as Ruby on Rails, Laravel, CakePHP, Django and more. It is a way of thinking organizationally when coding.
In MVC everything has its own place so you can catch up on projects easier and find snippets of code when debugging or improving a page. It also makes the application efficient and secure since only certain elements can do certain things. For example, only Models talk to the database, and only Views contain HTML markup and so forth.
Let’s start by looking at the core concepts that differentiate FP from the OO / imperative style most programmers are familiar with. Along the way it will be introduced you:
1. Immutable data structures. Having data structures that don’t change makes your code safer. Especially when dealing with concurrency and parallelism. However, they require you to approach solutions in a different way than you would with mutable data.
2. «Pure» functions. Pure, or idempotent, functions do not mutate state or cause other kinds of side effects. As a result, you are guaranteed that every time you call a function with the same parameters, you will always get the same value.
3. Recursion: While recursion is something most of us know about, it’s not something we tend to use often in imperative programming, and with good reason. Nonetheless, it’s a worth knowing about it’s various forms.
4. Function composition. When you have pure functions that handle only one task, you can build larger, more complex and more beneficial programs by composing functions together to form new functions.
5. First class functions: passing around functions as parameters and return values, just like any other object.
6. The holy trinity: map, reduce, filter. After all, these three functions are the work horses of FP, helping us manipulate and transform data quickly and elegantly.
If you just updated your iOS system, you may feel as your battery life reduced quite a bit. But don’t worry there are ways to change the situation and prolong the usage time. The first thing that you need to do is go to Settings>Battery to see a list of the apps that use the most power. You can easily limit them or set to turn off completely when the charge is low. The second great thing that you can do is to go on Low Power Mode. Another way to save power is to lower screen brightness, disable some visual effects, turn your flashlight down to low and many others. Watch the whole video to know all secrets of prolonging your battery life on iPhone iOS 11.
Design thinking is a method of developing products, services, and services that are user-centric. Design-thinking always puts the user’s request in the center and only then the possibilities of technical realization and economic opportunities.
Distinctive features of the design-thinking method:
– dive into user experience;
– a third-party approach to identifying problems;
– focus on personal scenarios of behavior and actions.
Very often your fans can stop. It happens when they overheat or put together. And it is hard to find them. You can take apart most of the fans. You just need to pull the screws out the screwdriver. Sometimes something is preventing the fan from turning. Usually, the matter is in lubricant. It can dry up, fails or something bad can happen too. The number one thing that can help you to clean your fan is an alcohol or q-tip. Clean the shaft by putting in the shaft back you know just jiggle it back and forth we clean the inside. You can use a toothpick.
But it is better to use proper lubricants if you want fans to work more than a month. But actually, you’d better replace your fan if it is wobbling. Then your computer will work as it should.