Tutorial by Examples: l

Easly access geolocation across Xamarin.iOS, Xamarin.Android and Windows. Available Nuget: [https://www.nuget.org/packages/Xam.Plugin.Geolocator/][1] XAML <StackLayout Spacing="10" Padding="10"> <Button x:Name="buttonGetGPS" Text="Get GPS"/...

Take or pick photos and videos from a cross platform API. Available Nuget : [https://www.nuget.org/packages/Xam.Plugin.Media/][1] XAML <StackLayout Spacing="10" Padding="10"> <Button x:Name="takePhoto" Text="Take Photo"/> <Butto...

Messaging plugin for Xamarin and Windows to make a phone call, send a sms or send an e-mail using the default messaging applications on the different mobile platforms. Available Nuget : [https://www.nuget.org/packages/Xam.Plugins.Messaging/][1] XAML <StackLayout Spacing="10" Padding...

Check to see if your users have granted or denied permissions for common permission groups on iOS and Android. Additionally, you can request permissions with a simple cross-platform async/awaitified API. Available Nuget : https://www.nuget.org/packages/Plugin.Permissions enter link description he...

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...

MasterDetailPage: Manages two separate Pages (panes) of information. XAML <?xml version="1.0" encoding="utf-8" ?> <MasterDetailPage xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" x:Class=&quot...

In Qt you should use QLinkedList in case you need to implement linked list. It is fast to append, prepend, insert elements into QLinkedList - O(1), but index lookup is slower than in QList or QVector - O(n). This is normal taking into attention you have to iterate through nodes to find something in...

With the 2.x versions of typescript, typings are now available from the npm @types repository. These are automatically resolved by the typescript compiler and are much simpler to use. To install a type definition you simply install it as a dev dependency in your projects package.json e.g. npm i -...

It is important to read the error response that is returned by the Google Analytics API server. In a lot of cases they can tell you exactly what is wrong. 400 invalidParameter { "error": { "errors": [ { "domain": "global", "reason&...

[Service] # empty exec prevents error "docker.service has more than one ExecStart= setting, which is only allowed for Type=oneshot services. Refusing." ExecStart= ExecStart=/usr/bin/dockerd -H fd:// --log-driver=syslog This enables syslog logging for the docker daemon. The file sho...

There are two classes of methods for solving Linear Equations: Direct Methods: Common characteristics of direct methods are that they transform the original equation into equivalent equations that can be solved more easily, means we get solve directly from an equation. Iterative Method: It...

An equation of the type f(x)=0 is either algebraic or transcendental. These types of equations can be solved by using two types of methods- Direct Method: This method gives the exact value of all the roots directly in a finite number of steps. Indirect or Iterative Method: Iterative method...

Nesting controllers chains the $scope as well. Changing a $scope variable in the nested controller changes the same $scope variable in the parent controller. .controller('parentController', function ($scope) { $scope.parentVariable = "I'm the parent"; }); .controller('childContro...

Arch: An official pacman-package is available. Install the package as root, using: pacman -S postgis OpenSuse: In order to use the openSuse repositories for geospatial applications, enable the Geo-repository as root: zypper ar http://download.opensuse.org/repositories/Application:/Geo/openSUS...

To disable synchronization context you should call the ConfigureAwait method: async Task() Foo() { await Task.Run(() => Console.WriteLine("Test")); } . . . Foo().ConfigureAwait(false); ConfigureAwait provides a means to avoid the default SynchronizationContext capturi...

Detailed instructions on getting moodle set up or installed are in the official Moodle page in the section Installing Moodle For administrators who are experienced with installing web server applications and are in a hurry to get up and running visit Installation Quickstart Platform specific instr...

Public Function TblExists(sTable As String) As Boolean On Error Resume Next Dim tdf As TableDef Set tdf = CurrentDb.TableDefs(sTable) If Err.Number = 0 Then TblExists = True Else TblExists = False End If End Function

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...