You are reading the article Examples On How Does Laravel Distinct Work? updated in October 2023 on the website Benhvienthammyvienaau.com. We hope that the information we have shared is helpful to you. If you find the content interesting and meaningful, please share it with your friends and continue to follow and support us for the latest updates. Suggested November 2023 Examples On How Does Laravel Distinct Work?
Introduction to Laravel DistinctWeb development, programming languages, Software testing & others
$hCat = Hotels::select( DB::raw('DISTINCT(hoteltype_id)'), What is Laravel Distinct? How does Laravel Distinct Work?One has to be careful while working with Laravel DISTINCT because it may not always provide you with the exact return. A turn around for that would be using the GROUPBY option, which essentially groups all the relevant search results and returns the same. One of the drawbacks of using the DISTINCT query is that if we are to request for multiple rows containing similar data that has to be merged together for the final output, the resultant will not be what we would expect it to be. Hence, under these circumstances, as mentioned previously we would be using the GROUPBY query.
For Example:
The table structure looks like this:
And I would want to have an output similar to this:
The Laravel Query Builder that has to be used for such an event would be:
However, for searches where multiple merges do not take place, the DISTINCT query works perfectly fine.
Hence, the important thing to remember here is the difference between GROUPBY and DISTINCT queries. Both return values, albeit, differently. The SELECT DISCTINCT query is used to return values which are different from each other.
The SELECT GROUP BY query is used to find values that are the same across multiple rows. Also, the GROUP BY query is used in conjunction with other functions like (COUNT, MAX, MIN, SUM, AVG), whereas, the DISTINCT QUERY is used as a standalone function.
Examples of Laravel DistinctA few examples using the Laravel DISTINCT query to ease the understanding:
1. Want to run a query which is going to return a value with No Duplicates.
The SQL query is going to be: SELECT DISTINCT column_name FROM table_name; The LARAVEL ELOQUENT query would beThe LARAVEL ELOQUENT query would be
3. A trickier example would be to display value ignoring any null values. The SQL query would be
SELCT DISTINCT meta_value FROM 'wp_postmeta'The LARAVEL ELOQUENT query would be.
SELECT Products.* FROM ------ Get all the distinct product_id’s of ordered products. ------ (i.e. only show each product once, regardless of how many ------ times it has been ordered. (SELCT DISTINCT product_id FROM orders) AS purchased_products ----- join back onto product table to show the full details of only ----- those products that have been ordered. INNER JOIN products ON purchased_products.product_id = products.products_idWhat this does is identifies the values that need to be queried and returns them as asked. Please note that in this case an additional functionality like INNER JOIN.
5. A simpler example related to the DISTINCT query would be:
The similar SQL query to this would be:
SELECT DISTINCT user_id FROM picks WHERE weeknum = 1Laravel unveiled a painless method of coding and simplified the logic. Hence particular to the DISTINCT query the bare syntax would ideally look like:
It does not confirm to the above kernel.
The correct syntax would be:
A couple of other variations would be:
Laravel 5 unveiled an addition of the UNIQUE query. This has a similar functionality to DISTINCT. Furthermore, it accepts the $Key argument which is optional. This restricts the items which are to be returned.
An example would be:
public function unique( $key = null, $strict = false );Over the years the PHP LARAVEL framework has become one of the most trusted tools for web development. The reasons are plenty.
It integrates with the mail services.
The integration with the tool makes building web applications faster and smoother.
Automation testing is one of the quickest in Laravel.
It is for these reasons, that the market is replete, with web applications based on the LARAVEL platform.
ConclusionThe DISTINCT query in the ELOQUENT LARAVEL framework is an important function. However, owing to a few shortcomings, this query limits its uses. LARAVEL though has quite a few other queries which does an equally commendable job, of returning distinct values. This does not demean the DISTINCT query by any means. It is an essential cog in the wheel.
Recommended ArticlesWe hope that this EDUCBA information on “Laravel Distinct” was beneficial to you. You can view EDUCBA’s recommended articles for more information.
You're reading Examples On How Does Laravel Distinct Work?
How Does Export Work In Docker? (Examples)
Introduction to Docker Export
Docker export is a command that is used to export the container’s file system as an archive, i.e., tar, that can be imported as required as a Docker image using the Docker import command. It includes all the files and folders created in that container. However, it does not export the data of volumes mounted on that container. It is very useful to create a single layer or flat Docker image to improve performance or to share the Docker image with others without the need for the Docker registry. It is like creating a template, as we create a template of VMs to speed up the process.
Start Your Free Software Development Course
Web development, programming languages, Software testing & others
Syntax:
docker export [OPTIONS] container
Options:
-o, –output – It is a string type and is used to write the output to a file instead of STDOUT.
Command:
docker export --help
Explanation:
We use ‘–help’ to know about the ‘docker export’ as shown above. We can see that this command has only one option, ‘-o’, for redirecting the output to a file.
How Does Export Work in Docker?
It takes at least one argument, that is, a container name or container ID. When we run this command, it saves the container’s file system as an archive. It creates a flat Docker image that makes the Docker image slightly smaller in size. However, it lost its history and metadata, which means we cannot perform any rollback to a previous layer if we import a Docker image using any exported tar file.
Below is a snapshot of a folder structure of an exported container:
Command:
tree -L 1 alpine-export
Output:
Explanation: We export a Docker container in a tar file and extracted the tar file in a folder ‘alpine-export’. The above example is the tree structure of that folder.
Example to Implement Docker ExportBelow are the examples:
Scenario 1: Update any File of the Docker ImageWe have built an nginx Docker Image, and a container is running using this Docker image; however, when we browse the web application, we realize that something is missing on the homepage. We need to update the homepage and create a new Docker image but building the image from scratch using Dockerfile is going to take more time, so we are going to make the changes in the chúng tôi file when the container is running, and we export the container and then import it as a Docker image. So let’s get started:
1. Below is the snippet of Dockerfile and chúng tôi files:
index.html
Code:
Dockerfile
CMD [“nginx”, “-g”, “daemon off;”]
2. Build the docker image named ‘my-nginx’ using the below command:
docker build -t my-nginx
Note: if Dockerfile is not in the current working directory, then use the full path of the Dockerfile.
Output:
3. Run a container using the above Docker image as below:
docker run -d -p 80:80 my-nginx
Output:
4. Now, let’s assume that we got a requirement to change the background color of the heading ‘Example of Docker Export’ to blue, so we will update the chúng tôi file in the running container and export it as an archive using the below command:
Command:
sudo docker exec -it 44 sh
Output:
5. Export the running container after making the changes using the below command and import it as a Docker image named ‘my-nginx:v2’;
Command:
docker run -d -p 8081:80 my-nginx:v2
Output:
Explanation: Run a new container using the imported Docker file to verify the changes are successfully applied as expected. When we browse the default page, we can see that the background color of the heading has been changed to blue in the below image.
Scenario 2: Create a Single Layer Docker ImageWhen we create a Docker image, it has multiple layers, as each instruction in a Dockerfile creates a layer while building the image. If we want to create a single-layer Docker image to enhance the performance of the container, we export the container and import it as a Docker image as shown in the below steps:
1. Check the layers of any Docker image using the below Command:
Syntax:
Command:
docker image history my-nginx
Output:
2. Now, again, run a container using this image and export it as an archive:
Command:
Output:
3. Import the exported archive file or tar file with the command and message below and check the history of the newly imported Docker image:
Command:
docker image history my-nginx:v3
Output:
Explanation:
In the above snapshot, only one layer shows after importing the exported archive. It helps to improve the performance. However, it is not recommended by Docker as Docker encourages building a multilayer Docker image to use the cache function of the image-building process.
Advantages of Docker Export
Speed: Docker export is faster than rebuilding the Docker image if any minor changes are required.
Image Sharing: As we know, if we want to share the Docker image, we need to push it to a registry; however, we can use Docker export to export it as an archive, and we can share it with others like we share files.
Performance: When we import the exported library using Docker import, it creates a single-layer Docker image that improves the performance of the container.
ConclusionDocker export is a command-line tool to export any container as an archive. The archive contains a regular Linux filesystem with all the container data except data of mounted volumes. Docker export and docker import both commands primarily work together.
Recommended ArticlesWe hope that this EDUCBA information on “Docker Export” was beneficial to you. You can view EDUCBA’s recommended articles for more information.
How Does The Null Function Work In C++ With Examples?
Introduction to C++ null
The null function is used to assign value to the variable; this can be treated as the default value for the variable defined in many programming languages. Null functions can be used to assign value to a pointer that is not pointing to any address and contain any garbage value, so the null function will assign them a special value called ‘NULL’, which means they are now null pointer. In this topic, we are going to learn about C++ null.
Start Your Free Software Development Course
Syntax
This is very simple to assign a null value to the variable in C++; we just need to do this at the time of initialization only. This variable then turns to be treated as the Null pointer. Below see the syntax to understand this better and used while programming see below;
int main () { int *your_ptr_name = NULL; }In the above syntax, we are using the NULL value here to assign to a pointer. First, we have to define the pointer, and then we can initialize it with NULL. Sample practice syntax for more understanding see below;
int main () { int *myptr = NULL; } How does the null function work in C++?As of now, we know that we use Null functions to assign some special value to the pointer variable. By the use of this, we can give them a logical value when they are not pointing to any address in the memory. That’s why it is also known as a special value to the pointer. Also, we know that pointer holds the memory address, so if we want them to point to some other value, in that case, we can use NULL here. But we have to use this while initiation of the pointer. Now we will see one example and understand its working how it actually works; for more detail, see below;
Example:
using namespace std; int main () { int *myptr1 = NULL; int *myptr2= NULL; int *myptr3 = NULL; if(!myptr1) { cout << “demo value for myptr ” << myptr1 ; } return 0; }
In this example, we create three different pointers, and all of them point to the NULL here. So as we can see, we have initialized the value for the variable at the time of declaring the variables. After this, we are making one check here to check and print the value of the pointer. If the statement coming out to be right, then the print statement will be executed; otherwise, it will return. If we see it will assign a default value of ‘0’ to the pointer. So a null can be an integer value as well when it is not pointing to the memory address. In the if statement above, as you can see pointer is pointing to null, but here it got converted into Boolean false, and if the value for any of the pointers is not null, then it will convert into Boolean true.
So in this way, we can test our pointers as well. Null functions are nothing but a way to assign value to the pointer variable in c++. We can also do dereferencing of our null pointers in c++, but this will lead to unusual behavior of the program. this is because dereferencing means go back to the previous state where it is pointing to before initiation, but if we try to do this in our code, a null pointer still points nowhere because it has no memory address attached with it.
Points to be remembered while working with the NULL functions in c++ see below;
2) If the pointer does not point to any memory address in C++, it does not point to null; we will use NULL functions to assign them value.
3) If we assign a value to a pointer using null functions, then they will convert to Boolean true or false depending on the value they are holding. This is because the null pointer can be integer also.
Examples of C++ nullGiven below are the examples of C++ null:
Example #1In this example, we will see how to initialize the null value to the pointer using the NULL function in C++; this is nothing but the special value we can assign at the time of initialization. There is no particular syntax to do this.
Code:
using namespace std; int main () { cout<<“Demo for null functions in c++”; cout<<“n”; int *myptr1 = NULL; int *myptr2= NULL; int *myptr3 = NULL; cout << “value of the first variabel is::: ” << myptr1 ; cout<<“n”; cout << “value of the second variabel is::: ” << myptr2 ; cout<<“n”; cout << “value of the third variabel is::: ” << myptr3 ; return 0; }
Output:
Example #2In this example, we are going to see how to make a conditional statement while using a NULL pointer in your program and how they change the value while checking them. After the statement, we are assigning them a new value to the point.
Code:
using namespace std; int main () { int var1 =20; int var2 =30; int var3 =40; cout<<“Demo for null functions in c++”; cout<<“n”; int *myptr1 = NULL; int *myptr2= NULL; int *myptr3 = NULL; cout<<“Value before null functions :::”; cout<<“n”; cout << “value of the first variable is before ::: ” << myptr1 ; cout<<“n”; cout << “value of the second variable is before :::” << myptr2 ; cout<<“n”; cout << “value of the third variable is before :::” << myptr3 ; if(!myptr1){ myptr1 = &var1; cout << “value after initialization is ::” ; cout<<“n”; cout << “value of the first variable is after ::: ” << myptr1 ; cout<<“n”; } if(!myptr2){ myptr2 = &var2; cout << “value after initialization is ::” ; cout<<“n”; cout << “value of the second variable is after ::: ” << myptr2 ; cout<<“n”; } if(!myptr3){ myptr3 = &var3; cout << “value after initialization is ::” ; cout<<“n”; cout << “value of the third variable is after ::: ” << 3 ; cout<<“n”; } return 0; }
Output:
ConclusionHence we can use null functions to assign value to the variable; null values are important when our pointer is not pointing to any memory address to avoid the unusual behavior while programming, so null functions or null assigning to a pointer is used to assign a default value when they are not pointing anywhere in the memory address.
Recommended ArticlesThis is a guide to C++ null. Here we discuss how the null function works in C++ and Examples along with the codes and outputs. You may also have a look at the following articles to learn more –
How Does Kubernetes Deployment Work?
Introduction to Kubernetes Deployment
In Kubernetes, Deployment is used to provide declarative updates to Pods as well as ReplicaSets. Also, a Deployment Controller is the higher version of a Replication Controller, as it Removes, Adds, Updates Pods in ReplicaSets. We need this to work faster and dynamically when we have ReplicaSets with tens of pods, and we are in need to modify them. By using Kubernetes Deployment, this can be achieved with very little effort if used in a correct way.
Start Your Free Software Development Course
Web development, programming languages, Software testing & others
What is Kubernetes Deployment?
Kubernetes Deployment works based on the specification YAML file, and you describe a required state in that. Then Deployment Controller changes the current state of Pods or ReplicaSets to the required state. We can define Deployments to create new ReplicaSets or to delete existing ReplicaSets or many other operations.
In Kubernetes, Deployment is the recommended way to deploy a Pod or RS. It represents a set of multiple pods which are identical in configuration but have unique identities. Deployment runs multiple replicas of your application, also automatically scales in or out the number of pods.
Also, when doing scaling, it also ensures that your application is UP at a moment of time by limiting its actions on few pods at a time.
Deployments are managed by Deployment Controller, which uses a pod template where specifications are mentioned for pods. This specification is in YAML format. In this YAML, you can mention how a Pod or ReplicaSet should look like, what application should run inside containers, which volumes should be mounted inside containers etc.
When a Deployment change and is applied, then Pods will be automatically created. Older Pods will be removed with controller speed.
How does Kubernetes Deployment Works?We should know Kubernetes’s way of working before we start using Deployment. Also, to work with Kubernetes Deployment, we need to have a Kubernetes environment which should contain at least below, even when you are doing a lab setup:
Kubernetes Cluster with Pods.
Kubectl command line.
If you have more than one node in your cluster, then networking should be working.
Kubernetes version should be higher than 9.
Also, for creating a specification YAML file to work with Deployment, it must have these fields known beforehand and should be mentioned in the Deployment specification YAML file.
apiVersion: To tell the api version.
kind: This must be Deployment.
metadata: Under this, you specify details of Deployment.
name: This specifies the name of Deployment.
Spec: Fields under this specify the labels to match and a number of replicas to.
selector: Under this field, you mention which labels to match before doing any scaling.
selector.matchLabels: These are the labels in key-value pair form.
replicas: The number of pods to create.
template: The pod’s template specification, labels to attach to pods, come under.
spec: Image and version etc., come under this.
metadata.labels: Labeling of pods in key-value pair.
When you apply this file using Kubectl like below:
kubectl apply –f deploy.yamlYour Deployment will create and command will give you output like below:
Now, if you check the number of pods running, you will see the same number of pods have been created, which you specified in spec.replica field (two in this case).
kubectl get podsAlso, you can wait a few seconds or minutes as per your number of pods to see output like below, where all your pods are ready to use.
kubectl get deploymentsWhen you check, you can see the ReplicaSet is created, the command to check, the output is like below:
kubectl get rsCheck the labels of the pods created, which is the same which you mentioned in Deployment’s YAML file.
kubectl get pods --show-labels Examples of Kubernetes DeploymentIn Kubernetes, when working with Deployment, we can perform many operations. A few of them are listed below. The list is long but not exhaustive.
To rollout an RS.
Pause the Deployment to apply multiple fixes in the YAML file and then resume to start a new rollout.
Removing old Pods or RS that are not needed.
New State Declaration for pods.
Rollback to an older version.
Scale up the Deployment to add more pods for the load.
Now, we can see few examples of working with Deployment, by which you can understand it in more detail:
Example #1 – Creating a Deployment
Create a Deployment YAML file like below, where you specify that you need 2 pods with redis image and container name start as redis and labeled with “name: redis.”
Apply this file using Kubectl. The output should be like below:
kubectl apply –f deploy.yaml
Now when you check the current Pod’s status, you will see Pods starts.
kubectl get pods
After some time, you can see all running if no issue.
kubectl get pods
Deployment works as rollout so its status can be checked as:
Example #2 – Updating the Deployment
For updating an existing Deployment like the one created in the previous example, you need to do the below. Change the Deployment YAML file. In this case, we changed the chúng tôi only from redis to redis-1.
cat deploy.yaml
Apply this YAML file using.
kubectl apply –f deploy.yaml
You will see old pods being terminating slowly and new pods being.
kubectl get pods
After some time, you get new pods, uniquely identified by the hash value attached to the end of pod’s.
kubectl get pods
Also, in events, you can see that containers with new names got.
Example #3 – Scaling out the Replica CountIn peak hours, you will get a heavy load, and you need additional pods; deployment does that easily like below:
Create a Deployment YAML file like below where you have modified the replica field from 2 to.
Use Kubectl to apply.
kubectl apply –f deploy.yaml
Check Deployment status. You will find now five pods running under this.
kubectl get deployment
New pods have been added, check by the AGE.
Example #4 – Deleting a DeploymentWhen Pods are not needed and so is Deployment, you can delete it simply using Kubectl.
Get Deployment status and pods running under it.
kubectl get deployments
Use Kubectl like below to delete the.
kubectl delete deployments redis-deploy-examCheck the current pod’s status. You will see Pods under termination.
kubectl get podCheck again, and you will not find any.
kubectl get pod ConclusionKubernetes Deployment is the preferred way to create a replicated application, which in turn uses a ReplicaSet (RS), which then works on Pods under it. Using Deployment efficiently makes your rollouts smooth and super easy. All you need to know is how it works and do good preparation. Features like Rolling Back A Deployment saves you in case of an unsuccessful upgrade and similar scenarios.
Recommended ArticlesWe hope that this EDUCBA information on “Kubernetes Deployment” was beneficial to you. You can view EDUCBA’s recommended articles for more information.
How Does Javascript Object.is() Work
Introduction to JavaScript object.is()
Web development, programming languages, Software testing & others
Syntax:
In the javascript client-side validation code, it can validate the conditions in the browser itself. Checking the server side’s conditions for each client request is unnecessary. Among these, it can validate using some default methods and their syntax for code redundancy and reduce the complexity of the application.
var v1=””; var v2=””; document.write(Object.is(v1, v2)); —some javascript logics—
The aforementioned codes represent the Object’s basic syntax. In the script, there is a () method that can be used for validation reasons, such as validating the conditions with alternative sequences.
How does JavaScript object.is() method works?The javascript Object.is() method is typically used to determine whether the values of two datatypes should be compared and to display the result in the browser. The two datatype values may be in any format, like string, integer, etc. Sometimes it includes both zeros and non-zero numbers in the variable values in these default method Objects.is(). We also validate the values in the single variable itself if suppose the variable contains key values pair. It may be an integer, strings, special characters or symbols, etc.
I suppose we are not using the Object.is() method, and we used “===” three equals operators, also called the strict comparison operator in the javascript. When we compared the chúng tôi and strict comparison operator, it behaves only with the exact scenarios, and the same will be fetching the values like NaN and +0/-0, i.e.). It uses the operators like positive and negative symbols in variable values. Because of Object.is() method. When we compare these values, the outcome will be undefined, null, or both types of values are either true or false, like a Boolean condition if both values are in string format and we have already calculated the string lengths. It’s also the same, and characters are also the same in the same order; it’s also an important condition; another important one is both variables are in the string format has the same object, which means both the objects have the same reference.
Examples to Implement JavaScript object.is()Below are the examples :
Example #1if (!Object.is) { Object.is = function(i, j) { if (i === j) { } else { return i !== i && j !== j; } }; } var first = { p: 1,q:3,r:4 }; var second = { a: 5,b:6,c:4 }; document.write(Object.is(first, second)); document.write(Object.is(first, second));
Output:
Example #2Code:
if (!Object.is) { Object.is = function(i, j) { if (i === j) { } else { return i !== i && j !== j; } }; } document.write(Object.is(‘sivaraman’, ‘srn’)); document.write(Object.is(‘arun’, ‘arun’)); document.write(Object.is(‘dadf’, ‘ddff’)); document.write(Object.is(‘sdafd’, ‘dafd’)); document.write(Object.is(‘ssd’, ‘ssd’)); document.write(Object.is(‘sdd’, ‘arsun’)); document.write(Object.is(‘sd’, ‘dsv’)); document.write(Object.is(‘dsfv’, ‘dsfd’)); document.write(Object.is(‘ds’, ‘dsfd’)); document.write(Object.is([], [])); document.write(Object.is(‘sivaraman’, 098)); document.write(Object.is(‘sivaraman’, 0978)); document.write(Object.is(‘sivaraman’, 0985)); document.write(Object.is(‘sivaraman’, 0938)); document.write(Object.is(NaN, 0/0)); document.write(Object.is(‘sivaraman’, 0928)); document.write(Object.is(NaN, 0/0)); document.write(Object.is(NaN, 0/0)); document.write(Object.is(NaN, 0/0));
Output:
Example #3if (!Object.is) { Object.is = function(i, j) { if (i === j) { } else { return i !== i && j !== j; } }; } var first = { p: 1,q:3,r:4,’sivaraman’:’srn’,’arun’:’arun’,’dadf’:’ddff’,’sdafd’:’dafd’,’ssd’:’ssd’,’sdd’:’arsun’,’sd’:’dsv’,’dsfv’:’dsfd’,’ds’:’dsfd’,’sivaraman’:098,’sivaraman’:0978,’sivaraman’:0985,’sivaraman’:0938,’sivaraman’:0928,NaN:0/0,'[]’:'[]’,’-0′:’0′,’sivaraman’:0985,’sivaraman’:0938,’sivaraman’:0928,’sivaraman’:0985,’sivaraman’:0938,’sivaraman’:0928,’sivaraman’:0985,’sivaraman’:0938,’sivaraman’:0928,’sivaraman’:0985,’sivaraman’:0938,’sivaraman’:0928,’sivaraman’:0985,’sivaraman’:0938,’sivaraman’:0928,’sivaraman’:0985,’sivaraman’:0938,’sivaraman’:0928,’sivaraman’:0985,’sivaraman’:0938,’sivaraman’:0928,’sivaraman’:0985,’sivaraman’:0938,’sivaraman’:0928,’sivaraman’:0985,’sivaraman’:0938,’sivaraman’:0928,’sivaraman’:0985,’sivaraman’:0938,’sivaraman’:0928,’sivaraman’:0985,’sivaraman’:0938,’sivaraman’:0928,’sivaraman’:0985,’sivaraman’:0938,’sivaraman’:0928,’sivaraman’:0985,’sivaraman’:0938,’sivaraman’:0928,’sivaraman’:0985,’sivaraman’:0938,’sivaraman’:0928,’sivaraman’:0985,’sivaraman’:0938,’sivaraman’:0928,’sivaraman’:0985,’sivaraman’:0938,’sivaraman’:0928,’sivaraman’:0985,’sivaraman’:0938,’sivaraman’:0928,’sivaraman’:0985,’sivaraman’:0938,’sivaraman’:0928,’sivaraman’:0985,’sivaraman’:0938,’sivaraman’:0928,’sivaraman’:0985,’sivaraman’:0938,’sivaraman’:0928,’sivaraman’:0985,’sivaraman’:0938,’sivaraman’:0928,’sivaraman’:0985,’sivaraman’:0938,’sivaraman’:0928,’sivaraman’:0985,’sivaraman’:0938,’sivaraman’:0928,’sivaraman’:0985,’sivaraman’:0938,’sivaraman’:0928,’arun’:’arun’,’dadf’:’ddff’,’sdafd’:’sdafd’,’arun’:’arun’,’dadf’:’ddff’,’sdafd’:’sdafd’,’arun’:’arun’,’dadf’:’ddff’,’sdafd’:’sdafd’,’arun’:’arun’,’dadf’:’ddff’,’sdafd’:’sdafd’ }; document.write(Object.is(first, first));
Output:
Explanation: Based on the user input it will validate the values and then reference the variables and then show the result as Boolean types like true or false. It satisfies all the conditions in the script, whereas it supports strings, numbers, and other special characters.
Advantages to JavaScript object.is()Based on the requirements, we have developed web applications, and also we provide some validation for client perspective and security purposes. At the same time, each default methods of the script have its own merits, and the de-merits main thing merit is the best one because when we take de-merits, it will be the frequency of code lines, and memory consumption takes more.
The benefit of the chúng tôi the () method that allows us can deploy the codes into the reusable modules.
The” ===” operator and Object.is() of the same purpose when we use === operator in the conditional statement; it checks and returns the same values if we use chúng tôi the () method, it also checks the conditions, like the given variable values and its references in the script.
The Reference will be calculated whenever we use chúng tôi the () method; it validates all the characters like strings, numbers, symbols, operators, etc.
It can compare the single datatype variable values and multiple variable values.
Recommended ArticlesWe hope that this EDUCBA information on “JavaScript object.is()” was beneficial to you. You can view EDUCBA’s recommended articles for more information.
What Is Magsafe, And How Does It Work On Iphone?
What is MagSafe on iPhone?
MagSafe is a wireless charging standard introduced with the iPhone 12 series. Apple added magnetic rings around the Qi wireless charging coil for better alignment. Apart from charging, the technology opened up a new range of MagSafe accessories to go with the iPhone.
MagSafe is currently available on the following devices:
iPhone 12 Mini
iPhone 12
iPhone 12 Pro
iPhone 12 Pro Max
iPhone 13 Mini
iPhone 13
iPhone 13 Pro
iPhone 13 Pro Max
iPhone 14
iPhone 14 Plus
iPhone 14 Pro
iPhone 14 Pro Max
Apple first introduced the MagSafe naming for the magnetic charger on Mac, which, when connected, was strong enough that it was hard to pluck right away. Later, Apple removed it to replace it with a USB-C port but brought it back in the MacBook Pro lineup in 2023.
How does MagSafe work on iPhone?As mentioned previously, there are 18 rectangular magnets under the wireless charging coil of the iPhone. These magnets sense MagSafe accessories and snap them into place. You don’t have to worry about MagSafe getting interfered by (or attaching to) other magnetic items since it’s only compatible with MagSafe accessories.
The coil used here is a newly redesigned one that works with magnets and the standard Qi wireless charging. Additionally, other components – shields and sensors – contribute to the functioning of MagSafe.
Apple made the shields with copper-graphite and nanocrystalline, allowing your iPhone to charge at faster speeds without damaging your iPhone battery.
Furthermore, the MagSafe sensors sense changes in the magnetic field strength and start charging instantly and efficiently. And finally, the magnets underneath the wireless charging coil ensure the MagSafe accessory perfectly aligns with your iPhone.
When you connect a MagSafe charger to an iPhone, the charging speeds can go up to 15W, depending on your charging adapter. However, connecting a Lightning accessory like EarPods to your iPhone and placing it on a MagSafe charger will throttle the charging speeds to 7.5W.
MagSafe on older iPhonesOld iPhones that support wireless charging also support MagSafe charging even though they don’t have the MagSafe components. There are a few catches here, though.
The charging speed gets capped to 5W instead of 15W.
No support for MagSafe accessories other than the MagSafe charger.
Benefits of using MagSafe with iPhone
Wireless charging already makes charging your iPhone convenient. On the other hand, MagSafe adds more to the convenience of wireless charging, and here are some of the benefits that you can enjoy with MagSafe.
The MagSafe charger aligns better with your iPhone.
You get faster transfer speeds compared to traditional Qi wireless charging.
MagSafe keeps your iPhone and its internals safe by optimizing the battery charging.
MagSafe allows you to use your iPhone when it’s in charge.
It introduces you to a wide range of accessories (including stands and car mounts) for your iPhone.
MagSafe maintains the temperature of your iPhone when charging.
How is MagSafe better than regular wireless charging?
With regular wireless charging, you get a maximum output of 7.5W, which the iPhone doesn’t receive entirely. Since wireless chargers don’t align with your iPhone or any other device, your devices lose power when charging.
Difference between MagSafe and wired chargingWired charging can top up your iPhone quicker than MagSafe since it charges at a speed of 20W. However, you will notice that, with wired charging, your iPhone heats up, and the charging stops at 80 percent when the Optimized Battery Charging kicks in.
Nevertheless, MagSafe keeps your iPhone’s temperature in check even though it charges at a maximum speed of 15W, but your iPhone’s battery will degrade slowly compared to wired charging.
MagSafe cases and other accessories
For MagSafe, Apple designed a range of accessories, and third-party manufacturers joined the bandwagon with their set of accessories. You can find MagSafe-enabled wallets, car mounts, chargers, and more for your iPhone.
Should you use MagSafe with your iPhone?
MagSafe is a relatively new technology that works well, yet it won’t replace wired charging anytime soon. So, if you have got an old iPhone and are looking for an upgrade only to get the MagSafe facility, it won’t be the wisest choice.
However, if you have an iPhone with MagSafe capabilities, you should look for accessories that say “Made for MagSafe” or “MagSafe-compatible.” If you want to know the difference between these, check out our article that outlines the difference between “MagSafe compatible” and “Made for MagSafe.”
Don’t do these with your MagSafe
Don’t attach cards to MagSafe that rely on magnetic strips.
Don’t place coins, bank cards, passports, or anything with magnets or RFID chips in MagSafe cases since they can get damaged.
Don’t keep your MagSafe wallet on or other attachments when charging with MagSafe.
Avoid using or taking MagSafe technology near medical pieces of equipment like pacemakers and defibrillators. A safe distance of 6 feet is best.
MagSafe is the future…
MagSafe technology has become a norm for iPhones; all the latest iPhones come with MagSafe technology. Whether you use it or not is up to you, but rest assured, MagSafe is an excellent addition to convenience-based products from Apple.
Read more:
Author Profile
Sajid
Sajid is an Electronics and Communications Engineering graduate who loves writing about tech. He’s primarily interested in writing about Android, iOS, Mac, and Windows. You’ll find him watching Anime or Marvel when he’s not writing.
Update the detailed information about Examples On How Does Laravel Distinct Work? on the Benhvienthammyvienaau.com website. We hope the article's content will meet your needs, and we will regularly update the information to provide you with the fastest and most accurate information. Have a great day!