Tutorial by Examples: v

Listing services systemctl To list running services systemctl --failed To list failed services Managing Targets (Similar to Runlevels in SysV) systemctl get-default To find the default target for your system systemctl set-default <target-name> To set the default target for your syst...

Docs: observers, multi-property observers, observing array mutations, adding observers dynamically. Adding an observer in the properties block lets you observe changes in the value of a property: static get properties() { return { myProperty: { observer: '_myPropertyChanged' ...

#include opencv2/opencv.hpp> #include vector> using namespace std; using namespace cv; int main() { Mat3b img = imread("test.jpg"); imshow("Original", img); // Cluster int K = 8; int n = img.rows * img.cols; Mat data = img.reshape(1, n); data.convertTo(data, CV_32F); ...

To create a NSUserActivity object, your app must declare the types of activities it supports in its Info.plist file. Supported activities are defined by your application and should be unique. An activity is defined using a reverse-domain style naming scheme (i.e. "com.companyName.productName.ac...

import tensorflow as tf # good idea tf.reset_default_graph() # DO MODEL STUFF # Pretrained weighting of 2.0 W = tf.get_variable('w', shape=[], initializer=tf.constant(2.0), dtype=tf.float32) # Model input x x = tf.placeholder(tf.float32, name='x') # Model output y = W*x y = tf.multiply(W,...

public static void main( String[] args ) throws IOException { // good idea to print the version number, 1.2.0 as of this writing System.out.println(TensorFlow.version()); final int NUM_PREDICTIONS = 1; // load the model Bundle try (SavedModelBundle b = SavedModelB...

Let's say that Bob owns a site that lets you post public messages. The messages are loaded by a script that looks like this: addMessage("Message 1"); addMessage("Message 2"); addMessage("Message 3"); addMessage("Message 4"); addMessage("Message 5&qu...

If you don't think that malicious scripts can harm your site, you are wrong. Here is a list of what a malicious script could do: Remove itself from the DOM so that it can't be traced Steal users' session cookies and enable the script author to log in as and impersonate them Show a fake "Yo...

TBD. How to setup pom.xml for calling testng.xml

Navigation bars are essentially a list of links, so the ul and li elements are used to encase navigation links. <ul> <li><a href="#">Home</a></li> <li><a href="#">About</a></li> <li><a href="#">...

To make a navigation bar using the HTML5 nav element, encase the links within the nav tag. <nav> <a href="#">Home</a> <a href="#">About</a> <a href="#">Contact</a> </nav>

Before rendering the final version of a notebook we can preview the output. Click on the Preview button on the toolbar and select the desired output format. You can change the type of output by using the output options as "pdf_document" or "html_notebook"

When a notebook .Rmd is saved, an .nb.html file is created alongside it. This file is a self-contained HTML file which contains both a rendered copy of the notebook with all current chunk outputs (suitable for display on a website) and a copy of the notebook .Rmd itself. More info can be found at R...

You can check R Version using the console version

Filter expressions cannot include Filter Objects. This is very important. If you decide to form your filters with Filter Expression, you use array of string arrays. The following syntax is wrong: // WRONG!!! var f1 = search.createFilter({ name: 'mainline', operator: searc...

The observer pattern is a common pattern, which is widely used in many contexts. A real example can be taken from YouTube: When you like a channel and want to get all news and watch new videos from this channel, you have to subscribe to that channel. Then, whenever this channel publishes any news, y...

The main current versions of SAS are 9.4 and 9.3 these are the versions of the base SAS engine most commonly used today. The link to release notes for versions 9.1 + and other related documentation are included below. Please note also, there are various packages and functions which extend the funct...

Let's say that whenever someone visits a profile page in Bob's website, the following URL is fetched: https://example.com/api/users/1234/profiledata.json With a response like this: { "name": "Bob", "description": "Likes pie & security holes.&quot...

fun startNewActivity(){ val intent: Intent = Intent(context, Activity::class.java) startActivity(intent) } You can add extras to the intent just like in Java. fun startNewActivityWithIntents(){ val intent: Intent = Intent(context, Activity::class.java) intent.putExtra(KEY_NA...

This is a single value metrics aggregation that calculates the average of the numeric values that are extracted from the aggregated documents. POST /index/_search? { "aggs" : { "avd_value" : { "avg" : { "field" : "name_of_field" } } ...