Tutorial by Examples: p

The preprocessor is an important part of the compiler. It edits the source code, cutting some bits out, changing others, and adding other things. In source files, we can include preprocessor directives. These directives tells the preprocessor to perform specific actions. A directive starts with a ...

This is a simple Simulink model where we can easily generate a signal and connect it to the scope. As this example shows anyone without knowledge of programming can easily work with the model, change its parameters and see the effect on the output.

Scala packages should follow the Java package naming conventions. Package names are written in all lower case to avoid conflict with the names of classes or interfaces. Companies use their reversed Internet domain name to begin their package names—for example, io.super.math

Detailed instructions on getting nutch set up or installed.

The primitive types in OpenCV are unsigned char, bool, signed char, unsigned short, signed short, int, float, double. Any data type in OpenCV is defined as CV_<bit-depth>{U|S|F}C(<number_of_channels>) where U: unsigned, S:signed and F:floating point. For example, CV_32FC2 is a 32-bit, ...

Import needed libraries: from gcloud import storage Define needed variables: Client: Bundles the configuration needed for API requests client = storage.Client() Optional params for Client(): project: the project which the client acts on behalf of. Will be passed when creating a topic. If...

Reading the specification for the document formats in OpenXML can be a time consuming process. Sometimes you just want to see how to produce a certain feature in a word-document. The Open XML SDK 2.5 Productivity Tool for Microsoft Office (OpenXmlSdkTool.exe) does just that. Its main features are: ...

To add additional restriction to the poReceiptLinesSelection data view, you should invoke Select method on base view and inspect each item in returned PXResultSet independently to decide if it complies with additional restriction(s): public class APInvoiceEntryExt : PXGraphExtension<APInvoiceEn...

Assume we need to add an NSString object to SomeClass (we cant subclass). In this example we not only create an associated object but also wrap it in a computed property in a category for extra neatness #import <objc/runtime.h> @interface SomeClass (MyCategory) // This is the property wr...

Accessed through including <stdio.h>, the function printf() is the primary tool used for printing text to the console in C. printf("Hello world!"); // Hello world! Normal, unformatted character arrays can be printed by themselves by placing them directly in between the parenthes...

Client apps can subscribe to any existing topic, or they can create a new topic. When a client app subscribes to a new topic name, a new topic of that name is created in FCM and any client can subsequently subscribe to it. To subscribe to a topic use the subscribeToTopic() method specifying the top...

Use Enum.chunk/2 to group elements into sub-lists, and Map.new/2 to convert it into a Map: [1, 2, 3, 4, 5, 6] |> Enum.chunk(2) |> Map.new(fn [k, v] -> {k, v} end) Would give: %{1 => 2, 3 => 4, 5 => 6}

Individual pixel access in OpenCV Mat structure can be achieved in multiple ways. To understand how to access, it is better to learn the data types first. Basic Structures explains the basic datatypes. Shortly, CV_<bit-depth>{U|S|F}C(<number_of_channels>) is the basic structure of a typ...

Cargo.toml: [package] name = "customderive" version = "0.1.1" [lib] proc-macro=true [dependencies] quote="^0.3.12" syn="^0.11.4" src/lib.rs: #![crate_type = "proc-macro"] extern crate proc_macro; use proc_macro::TokenStream; exte...

Ways to create a file with the echo command: echo. > example.bat (creates an empty file called "example.bat") echo message > example.bat (creates example.bat containing "message") echo message >> example.bat (adds "message" to a new line in example.bat)...

In OpenCV, images can be RGB/BGR, HSV, grayscaled, black-white and so on. It is crucial to know the data type before dealing with images. The image data types are mainly CV_8UC3 (Matrix of uchar with 3 channels) and CV_8U (Matrix of uchar with 1 channel), however, the conversion to other types such...

DispatchGroup allows for aggregate synchronization of work. You can use them to submit multiple different work items and track when they all complete, even though they might run on different queues. This behavior can be helpful when progress can’t be made until all of the specified tasks are c...

Activate Developer Mode: Login to odoo application. After login user may see several odoo menu's. Click on setting menu. Click on 'Activate the developer mode' which is located at right-bottom corner of settings page. Developer mode now activated.

Teacher Class: class Teacher { private String name; private double salary; private String subject; public Teacher (String tname) { name = tname; } public String getName() { return name; } private double getSal...

The CPU governor itself is just 1 C file, which is located in kernel_source/drivers/cpufreq/, for example: cpufreq_smartass2.c. You are responsible yourself for find the governor (look in an existing kernel repo for your device) But in order to successfully call and compile this file into your ke...