Tutorial by Topics: de

CascadeClassifier cascade = new CascadeClassifier("cascade.xml"); // Creates a cascade classifier from cascade.xml Mat image = Imgcodecs.imread("image.png"); // Converts image.png into a Mat (Matrix) object MatOfRect detections = new MatOfRect(); // Creates an empty MatOfRect...

The whole point of Dependency Injection ( DI ) is to reduce code coupling. Imagine any kind if interaction which involves newing up something like in the "Hard coded dependency example". A big part of writing code is the ability to test it. Every time we new up a new dependency, we mak...

ParametersDetailsPixelHeight (System.Int32)The height of the image in units of image pixelsPixelWidth (System.Int32)The width of the image in units of image pixelsPixelFormat (System.Windows.Media.PixelFormat)The width of the image in units of image pixelsPixelsAnything which implements IList<T&...

pygame.display.set_mode(resolution=(0,0), flags=0, depth=0) # Returns a pygame.Surface representing the window on screen flags = pygame.FULLSCREEN | pygame.OPENGL # Flags can be combined using the "|" (bitwise OR or "pipe") character. parameterexplainationresolutiona pai...

Base image declaration (FROM) Metadata (e.g. MAINTAINER, LABEL) Installing system dependencies (e.g. apt-get install, apk add) Copying app dependencies file (e.g. bower.json, package.json, build.gradle, requirements.txt) Installing app dependencies (e.g. npm install, pip install) Copying en...

Prepare by setting up your local development machine with the aws command line tool and the git command.

An Unicode code point, what programmers often think of one character, often corresponds to what the user thinks is one character. Sometimes however a “character” is made up of multiple code points, as the examples above show. This means that operations like slicing a string, or getting a characte...

All ancestors of a node /path to the node/ancestor::node() A specific ancestor of a node /path to the node/ancestor::ancestor_name Parent of a node /path to the node/parent::node() Following siblings of a node /path to the node/following-sibling::node() A specific s...

Warning Prepared statement cannot care a wild parameter for the table names. For exemple this following statement is not correct : $query = "SELECT name, city FROM ? WHERE id = ? AND country = ?"; The correct prepared query would be : $query = "SELECT name, city FROM users WHE...