Tutorial by Examples: access

Accessing the array of calendars To access the array of EKCalendars, we use the calendarsForEntityType method: Swift let calendarsArray = eventStore.calendarsForEntityType(EKEntityType.Event) as! [EKCalendar] Iterating through calendars Just use a simple for loop: Swift for calendar in cale...

Importing the framework Swift import Contacts Objective-C #import <Contacts/Contacts.h> Checking accessibility Swift switch CNContactStore.authorizationStatusForEntityType(CNEntityType.Contacts){ case .Authorized: //access contacts case .Denied, .NotDetermined: //request permissio...

Applying a filter To access contacts, we should apply a filter of type NSPredicate to our contactStore variable which we defined it in Authorizing Contact Access example. For example, here we want to sort out contacts with name matching with our own: Swift let predicate = CNContact.predicateForCo...

// iterating over items in collection foreach ($orders as $singleOrder) { // do something with individual objects var_dump($singleOrder->getData()); } // get first/last item in collection $first = $orders->getFirstItem(); $last = $orders->getLastItem();

We can avoid providing direct access to resource intensive constructors, like for databases. public class DbConnection { private static final int MAX_CONNS = 100; private static int totalConnections = 0; private static Set<DbConnection> availableConnections = new HashSet<DbConnectio...

Here are a simple example of some common tasks related to developing an API, differentiating between the HTTP Method of the request, accessing query string values and accessing the request body. Resources http.Handler interface http.ResponseWriter http.Request Available Method and Status cons...

(Access Code)[https://github.com/vDoers/vDoersCameraAccess]

All UI elements created and reside in the main thread of a program. Accessing these from another thread is forbidden by the .net framework runtime. Basically it is because all UI elements are thread sensitive resources and accessing a resource in a multi-threaded environment requires to be thread-sa...

Sometimes we have requirement of parsing pages, but doing so requires you to be an authorised user. Here is an example which shows you how to do in oracle sign in. import sys import requests import json from bs4 import BeautifulSoup def mprint(x): sys.stdout.write(x) print re...

You cannot access any GUI components from the BackgroudWorker. For example if you try to do something like this Private Sub BackgroundWorker1_DoWork(sender As Object, e As DoWorkEventArgs) TextBox1.Text = "Done" End Sub you will receive a runtime error saying that "Cross-thr...

docker network create -o "com.docker.network.bridge.enable_ip_masquerade"="false" lan-restricted Blocks Local LAN Internet Does not block Host running docker daemon (example access to 10.0.1.10:22)

docker network create -o "com.docker.network.bridge.enable_icc"="false" icc-restricted Blocks Containers accessing other containers on the same icc-restricted network. Does not block Access to host running docker daemon Local LAN Internet

iptables -I INPUT -i docker0 -m addrtype --dst-type LOCAL -j DROP Blocks Access to host running docker daemon Does not block Container to container traffic Local LAN Internet Custom docker networks that doesn't use docker0

docker network create --subnet=192.168.0.0/24 --gateway=192.168.0.1 --ip-range=192.168.0.0/25 local-host-restricted iptables -I INPUT -s 192.168.0.0/24 -m addrtype --dst-type LOCAL -j DROP Creates a network called local-host-restricted which which: Blocks Access to host running docker daem...

This example scans for available access points and ad hoc networks. btnScan activates a scan initiated by the WifiManager.startScan() method. After the scan, WifiManager calls the SCAN_RESULTS_AVAILABLE_ACTION intent and the WifiScanReceiver class processes the scan result. The results are displaye...

Data Access Object(DAO) design pattern is a standard J2EE design pattern. In this design pattern data is accessed through classes containing methods to access data from databases or other sources, which are called data access objects. Standard practice assumes that there are POJO classes. DAO can b...

In the following example consider you have a solution hosting two projects: ConsoleApplication1 and SampleClassLibrary. The first project will have the classes SampleClass1 and SampleClass2. The second one will have SampleClass3 and SampleClass4. In other words we have two assemblies with two classe...

Once you have a query, you can do more with it than just iterating the results in a for loop. Setup: from datetime import date class User(Base): __tablename__ = 'users' id = Column(Integer, primary_key=True) name = Column(Text, nullable=False) birthday = Column(Date) # ...

Assuming that you are running redis server on localhost you can type command redis-cli After this command appear redis command line prompt 127.0.0.1:6379>

var renderer = Platform.GetRenderer(visualElement); if (renderer == null) { renderer = Platform.CreateRenderer(visualElement); Platform.SetRenderer(visualElement, renderer); } DoSomeThingWithRender(render); // now you can do whatever you want with render