Tutorial by Examples: u

Package TikZ lends itself very well to drawing graphs. This is a small example (requires TikZ 3.0+): \documentclass{standalone} \usepackage{tikz} \usetikzlibrary{positioning,arrows.meta} \begin{document} \begin{tikzpicture}[auto,vertex/.style={draw,circle}] \node[vertex] (a) {A}; ...

Thorup's algorithm for single source shortest path for undirected graph has the time complexity O(m), lower than Dijkstra. Basic ideas are the following. (Sorry, I didn't try implementing it yet, so I might miss some minor details. And the original paper is paywalled so I tried to reconstruct it fr...

ls shows files and directories in present working directory. (if no arguments are passed.) (It doesn't show hidden files which starts with . by default.) user@ubuntu14:/usr$ ls bin games include lib lib32 local sbin share src To see all files (hidden files/folders also). Use ls -a OR l...

Step 1 :- Allow Google to Crawl to your content.Edit server’s robot.txt file.You can control google crawling for your content by editing this file,you can refer to this link for more details. Step 2 :- Associate your App with your website.Include assetlinks.json You upload it to your web server's ....

Get last segment echo end($this->uri->segment_array()); //it will print others Get before last segment echo $this->uri->segment(count($this->uri->segment_array())-1); //it will print how-can-i-do-this More info: [http://stackoverflow.com/questions/9221164/code-igniter-get-b...

# Copy remote file to local dir scp [email protected]:/remote/path/to/foobar.md /local/dest # Copy local file to remote dir scp foobar.md [email protected]:/remote/dest # Key files can be used (just like ssh) scp -i my_key.pem foobar.md [email protected]:/remote/dest

After installing Tomcat with apt-get on Ubuntu xx.xx, Tomcat creates and uses these directories: $cd /etc/tomcat6/ ├── Catalina │   └── localhost │   ├── ROOT.xml │   └── solr.xml -> ../../../solr/solr-tomcat.xml ├── catalina.properties ├── context.xml ├── logging.properties ├── ...

This type of Hook can be used to override core portal (e.g c/portal/login) and portlet struts actions (e.g /login/forgot_password), this actions for Liferay Portal are specified in a struts-config.xml file in its WEB-INF folder.To override an action: in liferay-hook.xml file of your hook plugin u...

case class Meter(meters: Double) extends AnyVal case class Gram(grams: Double) extends AnyVal Value classes provide a type-safe way to encode units, even if they require a bit more characters to use them: var length = Meter(3) var weight = Gram(4) //length = weight //type mismatch; found : Gr...

An alternative to forever on Linux is nohup. To start a nohup instance cd to the location of app.js or wwwfolder run nohup nodejs app.js & To kill the process run ps -ef|grep nodejs kill -9 <the process number>

h = 1.0 / n; #pragma omp parallel for private(x) shared(n, h) reduction(+:area) for (i = 1; i <= n; i++) { x = h * (i - 0.5); area += (4.0 / (1.0 + x*x)); } pi = h * area; In this example, each threads execute a subset of the iteration count. Each thread has its local private copy ...

h = 1.0 / n; #pragma omp parallel for private(x) shared(n, h, area) for (i = 1; i <= n; i++) { x = h * (i - 0.5); #pragma omp critical { area += (4.0 / (1.0 + x*x)); } } pi = h * area; In this example, each threads execute a subset of the iteration count and they accumul...

h = 1.0 / n; #pragma omp parallel for private(x) shared(n, h, area) for (i = 1; i <= n; i++) { x = h * (i - 0.5); #pragma atomic area += (4.0 / (1.0 + x*x)); } pi = h * area; In this example, each threads execute a subset of the iteration count and they accumulate atomically int...

h = 1.0 / n; #pragma omp parallel private(x) shared(n, h) { double thread_area = 0; // Private / local variable #pragma omp for for (i = 1; i <= n; i++) { x = h * (i - 0.5); thread_area += (4.0 / (1.0 + x*x)); } #pragma omp atomic ...

Given the following project structure include\ myHeader.h src\ main.cpp CMakeLists.txt the following line in the CMakeLists.txt file include_directories(${PROJECT_SOURCE_DIR}/include) adds the include directory to the include search path of the compiler for all targets defined in thi...

You need Node Package Manager to install the project dependencies. Download node for your operating system from Nodejs.org. Node Package Manager comes with node. You can also use Node Version Manager to better manage your node and npm versions. It is great for testing your project on different node...

Animating Background color of stacklayout on tapping button pages/main.component.ts import {Component, ElementRef, ViewChild} from "@angular/core"; import {Color} from "color"; import {View} from "ui/core/view"; @Component({ selector: "main&quot...

pages/main.component.ts import {Component, ElementRef, ViewChild} from "@angular/core"; import {View} from "ui/core/view"; import {AnimationCurve} from "ui/enums"; @Component({ selector: "main", template: ` <StackLayout> ...

Set the NSFetchRequest property sortDescriptors to determine how data is returned. let fetchRequest = NSFetchRequest(entityName: "NAME_OF_ENTITY") let sortDescriptor = NSSortDescriptor(key: "NAME_OF_ATTRIBUTE", ascending: true) fetchRequest.sortDescriptors = [sortDescriptor] ...

You can also set multiple sort descriptors, to sort by one attribute within another. For example, return all entries ordered by date, and by name within each date: let fetchRequest = NSFetchRequest(entityName: "NAME_OF_ENTITY") let sortDescriptor1 = NSSortDescriptor(key: "name"...