Tutorial by Examples: v

runtime: php vm: true api_version: 1 runtime_config: document_root: web

iText 2 and earlier: import com.lowagie.text.*; iText 5: import com.itextpdf.text.*; iText 7: import com.itextpdf.kernel.*; import com.itextpdf.layout.*; ...

If you want to use Swift3.0 or Bitcode you can add this code in your podfile. post_install do |installer| installer.pods_project.targets.each do |target| target.build_configurations.each do |config| config.build_settings['ENABLE_BITCODE'] = 'YES' config.build_settings['SWIFT...

Template - signup.component.html <form #signUpForm="ngForm" (ngSubmit)="onSubmit()"> <div class="title"> Sign Up </div> <div class="input-field"> <label for="username">username</label> ...

Getting a single frame from a movie ( supports only AVC, H.264 in MP4, ISO BMF, Quicktime container ): int frameNumber = 150; BufferedImage frame = FrameGrab.getFrame(new File("filename.mp4"), frameNumber); ImageIO.write(frame, "png", new File("frame_150.png")); G...

Call from main() // Simple lazy loader - not thread safe HolderNaive holderNaive = new HolderNaive(); Heavy heavy = holderNaive.getHeavy(); Heavy.class /** * * Heavy objects are expensive to create. * */ public class Heavy { private static final Logger LOGGER = LoggerFactory.ge...

To see you unit tests go to Test -> Windows -> Test Explorer (Figure 1) This will open an overview of all the tests in the application (Figure 2) In the figure above you can see that the example has one unit test and it hasn’t been run yet You can double-click on a tes...

To see you unit tests go to Test -> Windows -> Code Coverage Results (Figure 1) It will open the following window (Figure 2) The window is now empty Go to the Test menu -> Analyze Code Coverage (Figure 3) The tests will now be run as well (See the results in the T...

Override Pagination Style: Every available pagination style can be overridden by creating a new class that inherits from one of the available styles and then alters its parameters: class MyPagination(PageNumberPagination): page_size = 20 page_size_query_param = 'page_size' max_page...

We can perform a GROUP BY ... COUNT or a GROUP BY ... SUM SQL equivalent queries on Django ORM, with the use of annotate(), values(), order_by() and the django.db.models's Count and Sum methods respectfully: Let our model be: class Books(models.Model): title = models.CharField() ...

A generalization of std::condition_variable, std::condition_variable_any works with any type of BasicLockable structure. std::cv_status as a return status for a condition variable has two possible return codes: std::cv_status::no_timeout: There was no timeout, condition variable was notified st...

This is an advanced subject, do not attempt without first understanding the other examples of this page. As stated in the official Django Rest Framework on pagination: Pagination is only performed automatically if you're using the generic views or viewsets. If you're using a regular APIView, you...

Laravel Scout - Laravel Scout provides a simple, driver-based solution for adding full-text search to your Eloquent models. Laravel Passport - API authentication without a headache. Passport is an OAuth2 server that's ready in minutes. Homestead - The official Laravel development environment. Po...

Requirements: Add following references to the project: Microsoft ActiveX Data Objects 2.8 Library Microsoft ActiveX Data Objects Recordset 2.8 Library Declare variables Private mDataBase As New ADODB.Connection Private mRS As New ADODB.Recordset Private mCmd As New ADODB.Command...

Most of the web applications use the session object to store some important information. This examples show how you can test such application using Flask-Testing. Full working example is also available on github. So first install Flask-Testing in your virtualenv pip install flask_testing To be ...

With the virtual hard drive just created, boot the virtual machine with the android-x86 image in the optical drive. Once you boot, you can see the grub menu of the Live CD Choose the Debug Mode Option, then you should see the shell prompt. This is a busybox shell. You can get more shell by swi...

Create new instance of UISegmentedControl filled with 3 items (segments): let mySegmentedControl = UISegmentedControl (items: ["One", "Two", "Three"]) Setup frame; mySegmentedControl.frame = CGRect(x: 0.0, y: 0.0, width: 300, height: 50) Make default s...

To create a background with a gradient you can use the CAGradientLayer class: Swift 3.1: func createGradient() { let caLayer = CAGradientLayer() caLayer.colors = [UIColor.white, UIColor.green, UIColor.blue] caLayer.locations = [0, 0.5, 1] caLayer.bounds = self.bounds self...

matrix-vector(A,x) n = A.lines y = Vector(n) //create a new vector of length n parallel for i = 1 to n y[i] = 0 parallel for i = 1 to n for j = 1 to n y[i] = y[i] + A[i][j]*x[j] return y

Suppose we have a simple class with validation annotations public class UserDTO { @NotEmpty private String name; @Min(18) private int age; //getters/setters } A controller to check the UserDTO validity. @RestController public class ValidationController { @Reque...