Tutorial by Examples: nd

Complete the Installation and setup part. This will create the project in Firebase console and will also install the base SDK in your Android App. Add the dependency for Firebase Realtime Database to your app-level build.gradle file: compile 'com.google.firebase:firebase-database:9.4.0' N...

The std::borrow::Borrow and std::borrow::BorrowMut traits are used to treat borrowed types like owned types. For types A and B, impl Borrow<B> for A indicates that a borrowed A may be used where a B is desired. For instance, std::collections::HashMap.get() uses Borrow for its get() method,...

Sometimes builds take longer than expected. There are a few environment variables you can set to better understand what's happening during the build process. METEOR_DEBUG_BUILD=1 (logs progress) METEOR_PROFILE=<n> (logs time spent) METEOR_DEBUG_SPRINGBOARD=1 (?) METEOR_DEBUG_...

What? : A fully supported and extensible framework for building HTTP based endpoints. In the world of HTML5, mobile devices, and modern development techniques HTTP have become the default option for building rich, scalable services. The ASP.NET Web API provides an easy to use set of default options...

Extension methods enable you to simplify your interface definitions by only including core required functionality in the interface itself and allowing you to define convenience methods and overloads as extension methods. Interfaces with fewer methods are easier to implement in new classes. Keeping o...

You often find yourself in a situation where you need to find a variables corresponding value, and collections got you covered. In the example below we got three different locales in an array with a corresponding calling code assigned. We want to be able to provide a locale and in return get the as...

Run command below to install nginx. sudo apt-get install nginx By default, Nginx automatically starts when it is installed. You can access the default Nginx landing page to confirm that the software is running properly by visiting your server's domain name or public IP address in your web browse...

valgrind ./my-program arg1 arg2 < test-input This will run your program and produce a report of any allocations and de-allocations it did. It will also warn you about common errors like using uninitialized memory, dereferencing pointers to strange places, writing off the end of blocks allocate...

wikipedia definition: Command pattern is a behavioral design pattern in which an object is used to encapsulate all information needed to perform an action or trigger an event at a later time UML diagram from dofactory: Basic components and workflow: Command declares an interface for abst...

ClientContext clientContext = new ClientContext(siteUrl); Web oWebsite = context.Web; oWebsite.Title = "Updated Web Site"; oWebsite.Description = "This is an updated Web site."; oWebsite.Update(); clientContext.ExecuteQuery();

ClientContext clientContext = new ClientContext(siteUrl); Web oWebsite = clientContext.Web; ListCreationInformation listCreationInfo = new ListCreationInformation(); listCreationInfo.Title = "My Announcements List"; listCreationInfo.TemplateType = (int)ListTemplateType.Announcements;...

ClientContext oClientContext = new ClientContext("http://MyServer/sites/MySiteCollection/MyWebSite"); Web oWebsite = clientContext.Web; GroupCreationInformation groupCreationInfo = new GroupCreationInformation(); groupCreationInfo.Title = "My New Group"; groupCreationInfo.D...

ClientContext clientContext = new ClientContext(siteUrl); SP.List oList = clientContext.Web.Lists.GetByTitle("MyList"); int itemId = 3; ListItem oListItem = oList.Items.GetById(itemId); oListItem.BreakRoleInheritance(false); User oUser = clientContext.Web.SiteUsers.GetByLoginNam...

ClientContext clientContext = new ClientContext(siteUrl); SP.List oList = clientContext.Web.Lists.GetByTitle("MyList"); int itemId = 2; ListItem oListItem = oList.Items.GetById(itemId); oListItem.BreakRoleInheritance(true); User oUser = clientContext.Web.SiteUsers.GetByLoginName...

Arrays in C can be seen as a contiguous chunk of memory. More precisely, the last dimension of the array is the contiguous part. We call this the row-major order. Understanding this and the fact that a cache fault loads a complete cache line into the cache when accessing uncached data to prevent sub...

You can give alias names to a struct: typedef struct Person { char name[32]; int age; } Person; Person person; Compared to the traditional way of declaring structs, programmers wouldn't need to have struct every time they declare an instance of that struct. Note that the name Pers...

val str = "Hello!" if (str.length == 0) { print("The string is empty!") } else if (str.length > 5) { print("The string is short!") } else { print("The string is long!") } The else-branches are optional in normal if-statements.

1. Fix your contexts: Try using the appropriate context: For example since a Toast can be seen in many activities instead of in just one, use getApplicationContext() for toasts, and since services can keep running even though an activity has ended start a service with: Intent myService = new Inten...

union U { int a; short b; float c; }; U u; u.a = 10; if (u.b == 10) { // this is undefined behavior since 'a' was the last member to be // written to. A lot of compilers will allow this and might issue a // warning, but the result will be "as expected"; thi...

Properties can be set when an object is instantiated. var redCar = new Car { Wheels = 2, Year = 2016, Color = Color.Red };