Tutorial by Examples: l

For example, say below is the sample data in an Excel 'Test', Purchase_Date Customer_Name Price 05-05-2017 Adam 1075 06-05-2017 Noah 1093 07-05-2017 Peter 1072 08-05-2017 Louis 1101 09-05-2017 Zoe 1248 10-05-2017 Kevin 1045 11-05-2017 Messiah 1...

This is project directory. A service endpoint interface First we will create a service endpoint interface. The javax.jws.WebService @WebService annotation defines the class as a web service endpoint. import javax.jws.WebMethod; import javax.jws.WebService; import javax.jws.soap.SOAPBi...

Magics whose name begins with just one % take as argument the rest of the line and are called line magics. Magics that begin with a double percent sign %% take a multi-line argument and are called cell magics. A commonly used magic is %timeit, a wrapper around the Python's timeit.timeit function, f...

import scalaz._ import Scalaz._ scala> Apply[Option].apply2(some(1), some(2))((a, b) => a + b) res0: Option[Int] = Some(3) scala> val intToString: Int => String = _.toString scala> Apply[Option].ap(1.some)(some(intToString)) res1: Option[String] = Some(1) scala> Appl...

Having different pipes is a very common case, where each pipe does a different thing. Adding each pipe to each component may become a repetitive code. It is possible to bundle all frequently used pipes in one Module and import that new module in any component needs the pipes. breaklines.ts import...

A common need for random numbers it to generate a number that is X% of some max value. this can be done by treating the result of NextDouble() as a percentage: var rnd = new Random(); var maxValue = 5000; var percentage = rnd.NextDouble(); var result = maxValue * percentage; //suppose NextDoub...

apcu_store can be used to store, apcu_fetch to retrieve values: $key = 'Hello'; $value = 'World'; apcu_store($key, $value); print(apcu_fetch('Hello')); // 'World'

When creating a std::unique_lock, there are three different locking strategies to choose from: std::try_to_lock, std::defer_lock and std::adopt_lock std::try_to_lock allows for trying a lock without blocking: { std::atomic_int temp {0}; std::mutex _mutex; std::thread t( [&...

/** * Set a custom add to cart URL to redirect to * @return string */ function custom_add_to_cart_redirect() { return 'http://www.yourdomain.com/your-page/'; } add_filter( 'woocommerce_add_to_cart_redirect', 'custom_add_to_cart_redirect' );

std::scoped_lock provides RAII style semantics for owning one more mutexes, combined with the lock avoidance algorithms used by std::lock. When std::scoped_lock is destroyed, mutexes are released in the reverse order from which they where acquired. { std::scoped_lock lock{_mutex1,_mutex2}; ...

Compress-Archive -Path C:\Documents\* -CompressionLevel Optimal -DestinationPath C:\Archives\Documents.zip This command: Compresses all files in C:\Documents Uses Optimal compression Save the resulting archive in C:\Archives\Documents.zip -DestinationPath will add .zipif not present. -Li...

index.js var http = require("http"); http.createServer(function(request, response) { response.writeHead(200, {"Content-Type": "text/plain"}); response.write("Heroku world!"); response.end(); }).listen(process.env.PORT); package.json { &quo...

if (Patterns.EMAIL_ADDRESS.matcher(email).matches()){ Log.i("EmailCheck","It is valid"); }

The List interface is implemented by different classes. Each of them has its own way for implementing it with different strategies and providing different pros and cons. Classes implementing List These are all of the public classes in Java SE 8 that implement the java.util.List interface: Abs...

Vertical join appends dataset B to dataset A providing both of them have similar variables. For example, we have sales for the month of Jan'17 in dataset A and sales for Feb'17 in dataset B. To create a dataset C that has sales of both Jan and Feb we use Vertical Join. PROC SQL; CREATE TABLE C AS ...

Left join returns all the observations in the left data set regardless of their key values but only observations with matching key values from the right data set. Considering the same example as above, PROC SQL; CREATE TABLE C AS SELECT A.*, B.CC_NUMBER, B.START_DATE FROM CUSTOMER A LEFT JOIN CC...

Full join selects all the observations from both data sets but there are missing values where the key value in each observation is found in one table only. PROC SQL; CREATE TABLE C AS SELECT A.*, B.CC_NUMBER, B.START_DATE FROM CUSTOMER A FULL JOIN CC_DETAILS B ON A.CUSTOMERID=B.CUSTOMERID QUI...

Many biological questions can be translated into a DNA sequencing problem. For instance, if you want to know the expression level of a gene you can: copy its mRNAs into complementary DNA molecules, sequence each of the resulting DNA molecules, map those sequences back to the reference genome, and th...

LRU Cache The following example code demonstrates a possible implementation of the LruCache class for caching images. private LruCache<String, Bitmap> mMemoryCache; Here string value is key for bitmap value. // Get max available VM memory, exceeding this amount will throw an // OutOfMem...

Scope is used as the "glue" that we use to communicate between the parent controller, the directive, and the directive template. Whenever the AngularJS application is bootstrapped, a rootScope object is created. Each scope created by controllers, directives and services are prototypically ...