Tutorial by Examples: en

Data sets often contain comments that explain the data format or contain the license and usage terms. You usually want to ignore these lines when you read in the DataFrame. The readtable function assumes that comment lines begin with the '#' character. However, your file may use comment marks like ...

Query store can be enabled on database by using the following command: ALTER DATABASE tpch SET QUERY_STORE = ON SQL Server/Azure SQL Database will collect information about executed queries and provide information in sys.query_store views: sys.query_store_query sys.query_store_query_text sy...

LINQ extension methods on IEnumerable<T> take actual methods1, whether anonymous methods: //C# Func<int,bool> fn = x => x > 3; var list = new List<int>() {1,2,3,4,5,6}; var query = list.Where(fn); 'VB.NET Dim fn = Function(x As Integer) x > 3 Dim list = New List F...

$url1 = [uri]::EscapeDataString("http://test.com?test=my value") # url1: http%3A%2F%2Ftest.com%3Ftest%3Dmy%20value $url2 = [uri]::EscapeUriString("http://test.com?test=my value") # url2: http://test.com?test=my%20value # HttpUtility requires at least .NET 1.1 to be instal...

$scheme = 'https' $url_format = '{0}://example.vertigion.com/foos?{1}' $qs_data = @{ 'foo1'='bar1'; 'foo2'= 'complex;/?:@&=+$, bar''"'; 'complex;/?:@&=+$, foo''"'='bar2'; } [System.Collections.ArrayList] $qs_array = @() foreach ($qs in $qs_data.GetEnumerator()...

$scheme = 'https' $url_format = '{0}://example.vertigion.com/foos?{1}' $qs_data = @{ 'foo1'='bar1'; 'foo2'= 'complex;/?:@&=+$, bar''"'; 'complex;/?:@&=+$, foo''"'='bar2'; } [System.Collections.ArrayList] $qs_array = @() foreach ($qs in $qs_data.GetEnumerator()...

To use the IMAP functions in PHP you'll need to install the IMAP extension: Debian/Ubuntu with PHP5 sudo apt-get install php5-imap sudo php5enmod imap Debian/Ubuntu with PHP7 sudo apt-get install php7.0-imap YUM based distro sudo yum install php-imap Mac OS X with php5.6 brew reinsta...

let bodies = (contact.bodyA.categoryBitMask <= contact.bodyB.categoryBitMask) ? (A:contact.bodyA,B:contact.bodyB) : (A:contact.bodyB,B:contact.bodyA) switch (bodies.A.categoryBitMask,bodies.B.categoryBitMask) { case let (a, _) where (a && superPower): //All we care about is i...

Objective-C First add the Social Framework to the XCode project. Import the #import "Social/Social.h" class to the required ViewController Twitter with text, image and link //- - To Share text on twitter - - if([SLComposeViewController isAvailableForServiceType:SLServiceTypeTwitter]) ...

The Entry View is used to allow users to type a single line of text. This single line of text can be used for multiple purposes including entering basic notes, credentials, URLs, and more. This View is a multi-purpose View, meaning that if you need to type regular text or want to obscure a password,...

An EntryCell is a Cell that combines the capabilities of a Label and an Entry. The EntryCell can be useful in scenarios when building some functionality within your application to gather data from the user. They can easily be placed into a TableView and be treated as a simple form. XAML <Ent...

Installation via NodeJS is the recommended method. It is preferred because you can use it to build the files selecting just the components you want. Step 1: Install Node (Link) Step 2: Install Gulp globally ( -g ) on your computer npm install -g gulp Semantic UI uses Gulp to provide command ...

There are many reasons a write operation may fail. A frequent one is because your security rules reject the operation, for example because you're not authenticated (by default a database can only be accessed by an authenticated user). You can see these security rule violations in the console output...

This document details the steps to obtain the facebook access tokens and the using the tokens to fetch FB feeds. Example: A live example is available in https://newtonjoshua.com Introduction to Graph API: The Graph API is the primary way to get data in and out of Facebook's platform. It's a...

ContentPage: Displays a single View. XAML <?xml version="1.0" encoding="utf-8" ?> <ContentPage xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" x:Class="XamlBasics.SampleXaml"> &lt...

An Odd-Even Sort or brick sort is a simple sorting algorithm, which is developed for use on parallel processors with local interconnection. It works by comparing all odd/even indexed pairs of adjacent elements in the list and, if a pair is in the wrong order the elements are switched. The next step ...

To get started we need a factory that produces WebClients. public class ClientFactory { private Map<String, WebClient> cache = new HashMap<>(); public enum RESTClient { PORTAL; } public WebClient fetchRestClient(RESTClient restClient) { if (th...

Both connecting to a remove SSH server and accepting SSH connections require installation of openssh Debian: # apt-get install openssh Arch Linux: # pacman -S openssh Yum: # yum install openssh

To generate keys for SSH client: ssh-keygen [-t rsa | rsa1 | dsa ] [-C <comment>] [-b bits] For example: ssh-keygen -t rsa -b 4096 - C myemail@email.com Default location is ~/.ssh/id_rsa for private and ~/.ssh/id_rsa.pub for public key. For more info, please visit man.openbsd.org

An example implementation of BubbleSort in C++: void bubbleSort(vector<int>numbers) { for(int i = numbers.size() - 1; i >= 0; i--) { for(int j = 1; j <= i; j++) { if(numbers[j-1] > numbers[j]) { swap(numbers[j-1],numbers(...