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All we need are: ViewPager, TabLayout and 2 drawables for selected and default dots. Firstly, we have to add TabLayout to our screen layout, and connect it with ViewPager. We can do this in two ways: Nested TabLayout in ViewPager <android.support.v4.view.ViewPager android:id="@+i...

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Although storing multiple values in a single column violates normalization rules, sometimes one has to deal with badly designed legacy tables. A recursive query can help convert comma-separated values into distinct rows. Create a sample badly designed table and insert some data: create table proje...

The default way to find installed packages with CMake is the use the find_package function in conjunction with a Find<package>.cmake file. The purpose of the file is to define the search rules for the package and set different variables, such as <package>_FOUND, <package>_INCLUDE_D...

On Unix-like operating systems, it is possible to use the pkg-config program to find and configure packages that provides a <package>.pc file. In order to use pkg-config, it is necessary to call include(FindPkgConfig) in a CMakeLists.txt. Then, there are 2 possible functions: pkg_search_mo...

String macros do not come with built-in interpolation facilities. However, it is possible to manually implement this functionality. Note that it is not possible to embed without escaping string literals that have the same delimiter as the surrounding string macro; that is, although ""&quot...

Adding a Product to a Shopping Cart The following example demonstrates how to Add a product (or anything) to a Database Table asynchronously, using AJAX, and TypeScript. declare var document; declare var xhr: XMLHttpRequest; window.onLoad = () => { Start(); }; function Start() { ...

Detailed instructions on getting swt set up or installed.

Detailed instructions on getting encoding set up or installed.

Outer joins return all the rows from one or both tables, plus matching rows. Table People PersonID FirstName 1 Alice 2 Bob 3 Eve Table Scores PersonID Subject Score 1 Math 100 2 Math 54 2 Science 98 Left joining the tables: Select * f...

This simple function will execute the specified Select SQL command and return the result as data set. Public Function ReadFromDatabase(ByVal DBConnectionString As String, ByVal SQL As String) As DataTable Dim dtReturn As New DataTable Try 'Open the connection using the connection...

Data not yet known - such as end_date, rating Optional data - such as middle_initial (though that might be better as the empty string) 0/0 - The result of certain computations, such as zero divided by zero. NULL is not equal to "" (blank string) or 0 (in case of integer). others? ...

Using the /p switch with the SET command you can define variables from an Input. This input can be a user Input (keyboard) : echo Enter your name : set /p name= echo Your name is %name% Which can be simplified like this : set /p name=Enter your name : echo Your name is %name% Or you can...

int fakeMalloc(__local int * addrCounter,int size) { // lock addrCounter // adds size to addrCounter's pointed cell value // unlock // return old value of addrCounter's pointed cell // serial between all threads visiting -> slow ret...

GSON does not support inheritance our of the box. Let's say we have the following class hierarchy: public class BaseClass { int a; public int getInt() { return a; } } public class DerivedClass1 extends BaseClass { int b; @Override public int getIn...

The Android Account Authenticator system can be used to make the client authenticate with a remote server. Three pieces of information are required: A service, triggered by the android.accounts.AccountAuthenticator. Its onBind method should return a subclass of AbstractAccountAuthenticator. An a...

A repository is a place that SBT looks for libraryDependencies. If the build complains about not finding a dependency, it can be lacking the correct repository. Within SBT, the repositories are listed in the resolvers SettingKey: resolvers += "Flyway" at "https://flywaydb.org/repo&qu...

The standard structure for a project built by SBT is: projectName/ build.sbt project/ <SBT sub-build information> src/ main/ scala/ <Scala source files> java/ <Java source files> resources/ ...

If your project has this: scalaVersion := 2.11 // Replace '2.11' with the version of Scala your project is running on Then you can use %% to automatically get the version of the library compiled against the version of Scala the project is using: libraryDependencies += "com.typesafe.slick&...

A library can be 'pinned' to a specific version of Scala using the % operator between the groupId and the artifactId (the first two strings in a library dependency). In this example, we pin the library with the artifactId of slick to Scala version 2.10: libraryDependencies += "com.typesafe.sl...