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List can contain n number of items. The items in list are separated by comma >> a = [1,2,3] To access an element in the list use the index. The index starts from 0 >> a[0] >> 1 Lists can be nested. >> nested_list = [ [1,2,3], ['a','b','c'] ] >> nested_list...

Here counter is a child component accessed by demo which is a parent component using v-model. // child component Vue.component('counter', { template: `<div><button @click='add'>+1</button> <button @click='sub'>-1</button> <div>this is inside the child c...

After spending more than 5 hours, i found this easy solution: -To verify that the system has a CUDA-capable GPU, run the following command: lspci | grep -i NVIDIA You will see output similar to the following example (showing an NVIDIA Tesla K80/M60 card): -Disabling the nouveau driver: sudo...

The most basic way to structure your code using spring boot for good automatic package scanning is using @SpringBootApplication annotation. This annotation provide in itself 3 other annotations that helps with automatic scanning: @SpringBootConfiguration, @EnableAutoConfiguration, @ComponentScan (mo...

You can use @ComponentScan in order to configure more complex package scanning. There is also @ComponentScans that act as a container annotation that aggregates several @ComponentScan annotations. Basic code examples @ComponentScan public class DemoAutoConfiguration { } @ComponentScans({@Co...

You might need a v-model on a computed property. Normally, the v-model won't update the computed property value. The template: <div id="demo"> <div class='inline-block card'> <div :class='{onlineMarker: true, online: status, offline: !status}'></div> ...

public class ConvertMapToList { public static void main(String[] args) { Map<Integer, String> map = new HashMap<>(); map.put(10, "apple"); map.put(20, "orange"); map.put(30, "banana"); map.put(40, "w...

Value types simply contain a value. All value types are derived from the System.ValueType class, and this includes most of the built in types. When creating a new value type, the an area of memory called the stack is used. The stack will grow accordingly, by the size the declared type. So for exa...

Reference types are comprised of both a reference to a memory area, and a value stored within that area. This is analogous to pointers in C/C++. All reference types are stored on what is known as the heap. The heap is simply a managed area of memory where objects are stored. When a new object is ...

In order to publish to a repository in Maven format ,“maven-publish” plugin for gradle can be used. The plugin should be added to build.gradle file in library module. apply plugin: 'maven-publish' You should define the publication and its identity attributes in build.gradle file too. This iden...

Policies are classes that help you organise authorisation logic around a model resource. Using our previous example, we might have a ContentPolicy that manages user access to the Content model. To make ContentPolicy, laravel provides an artisan command. Simply run php artisan make:policy ContentPo...

Writing Policies follows much the same pattern as writing Gates. The content permission gate can be rewritten as a Policy like this: function view($user, $content) { return $user->isSubscribedTo($content->id); } Policies can contain more methods as needed to take care of all authori...

Via The User model The Laravel User model contains two methods that help with authorisations using Policies; can and can't. These two can be used to determine if a user has authorisation or not on a model respectively. To check if a user can view a content or not, you can do the following: if($us...

These inspections are extremely useful for preventing NullPointerExceptions. By default they are disabled. You can find these inspections in Inspections preferences: Java | Probable bugs | Constant conditions & exceptions and @NotNull/@Nullable problems. There you can also configure your annotat...

(From this answer) The example below adds an enumerated type to a postgres database. First, edit the migration file (created with mix ecto.gen.migration): def up do # creating the enumerated type execute("CREATE TYPE post_status AS ENUM ('published', 'editing')") # creating a...

So let's say you have an entity class like this: public class Person { public int PersonId { get; set; } public string Name { get; set; } public string ZipCode { get; set; } public string City { get; set; } public string AddressLine { get; set; } } And then let's say that...

And now let's say you want to do the opposite of entity splitting: instead of mapping one entity into two tables, you would like to map one table into two entities. This is called table splitting. Let's say you have one table with five columns: PersonId, Name, AddressLine, City, ZipCode, where Pers...

Install Xcode from the App Store. Install the Xcode developer tools > xcode-select --install This will provide basic command line tools such as gcc and make Install Mac Ports https://www.macports.org/install.php The OSX Sierra install package will provide an open-source method of ...

A library based on NETStandard 1.6 would look like this: { "version": "1.0.0", "dependencies": { "NETStandard.Library": "1.6.1", //nuget dependency }, "frameworks": { //frameworks the library is build for "netst...

Taken from microsoft's github page with official documentation { "name": String, //The name of the project, used for the assembly name as well as the name of the package. The top level folder name is used if this property is not specified. "version": String, //The Semver versi...