Tutorial by Examples: o

A minimal setup for camera output preview (Swift 2, Swift 3) import UIKit import AVFoundation class ViewController: UIViewController { var session: AVCaptureSession? var cameraPreviewLayer: AVCaptureVideoPreviewLayer? override func viewDidLoad() { super.viewDidLoad() ...

Valgrind provides you with the lines at which the error occurred at the end of each line in the format (file.c:line_no). Errors in valgrind are summarised in the following way: ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0) The most common errors include: Illegal read/write er...

One can use the following methods in order to import a Mercurial Repo into Git: Using fast export: cd git clone git://repo.or.cz/fast-export.git git init git_repo cd git_repo ~/fast-export/hg-fast-export.sh -r /path/to/old/mercurial_repo git checkout HEAD Using Hg-Git: A very deta...

We can use typedef to simplify the usage of function pointers. Imagine we have some functions, all having the same signature, that use their argument to print out something in different ways: #include<stdio.h> void print_to_n(int n) { for (int i = 1; i <= n; ++i) printf(...

Sometimes we need to join multiple tables to get aggregate data in return. here is how we can achieve the same using CodeIgniter Query Builder / Active Records. public function getStudentInfo($studentid){ $query = $this->db->select("st.id, st.name, st.class, mk.maths, mk.science&quo...

<?php namespace App\Http\Controllers; use App\User; use App\Http\Controllers\Controller; class UserController extends Controller { /** * Show the profile for the given user. * * @param int $id * @return Response */ public function show($id) ...

Web Api 2 - Hello World example We are going to create a new Web Api simple application which return to us Json with message and user name. Lets start! First create new Web Api project using Visual Studio and select Empty Template. Be sure to check "Web Api" folder: NOTE I didn't choo...

As we can add multiple elements in Cart array and then add it to cart session, but there are 4 basic elements which Cart class requires to add data successfully in cart session. id (string) qty (number) price (number, decimal) name (String) And if you want to add more options regardin...

<nav aria-label="Page navigation example"> <ul class="pagination"> <li class="page-item"><a class="page-link" href="#">Previous</a></li> <li class="page-item"><a class="page-lin...

Usually, the routes in a controller have the same prefix connected somehow with functionality of this controller. For example: public class ProductsController : ApiController { [Route("api/products")] public IEnumerable<Product> GetProducts() { ... } [Route("a...

You can also add same custom created taxonomy into post type page using below code. function add_taxonomies_to_pages() { register_taxonomy_for_object_type( 'genre', 'page' ); } add_action( 'init', 'add_taxonomies_to_pages' ); Add above code into your theme's functions.php file. Same way...

Detailed instructions on getting nfc set up or installed.

First of all you need to create AVAssetWriter NSError *error = nil; NSURL *outputURL = <#NSURL object representing the URL where you want to save the video#>; AVAssetWriter *assetWriter = [AVAssetWriter assetWriterWithURL:outputURL fileType:AVFileTypeQuickTimeMovie error:&error]; if (!...

Django Views are simply the functions that get called when a request is made to a certain URLs. URL patterns are written in urls.py file, each URL regex is given a function(Django view) from a views.py, so when a request is made, that function gets the call, with the HTTP request object, and then y...

string contents = ""; string url = "http://msdn.microsoft.com"; using (System.Net.WebClient client = new System.Net.WebClient()) { contents = client.DownloadString(url); } Console.WriteLine(contents);

#include <stdio.h> #include <pthread.h> void *thread_func(void *arg) { printf("I am thread #%d\n", *(int *)arg); return NULL; } int main(int argc, char *argv[]) { pthread_t t1, t2; int i = 1; int j = 2; /* Create 2 threads t1 and t2 wit...

Option Explicit 'GetSystemMetrics32 info: http://msdn.microsoft.com/en-us/library/ms724385(VS.85).aspx #If Win64 Then Private Declare PtrSafe Function GetSystemMetrics32 Lib "User32" Alias "GetSystemMetrics" (ByVal nIndex As Long) As Long #ElseIf Win32 Then Private...

import networkx as nx # importing networkx package import matplotlib.pyplot as plt # importing matplotlib package and pyplot is for displaying the graph on canvas b=nx.Graph() b.add_node('helloworld') b.add_node(1) b.add_node(2) '''Node can be called by any python-hashable obj like string,nu...

Detailed instructions on getting kinect set up or installed.Setting Up a Kinect Sensor Kinect for Windows 1.5, 1.6, 1.7, 1.8 Here are some simple steps to get your Kinect sensor up and running. Step 1: Mount the Sensor on a Stable Surface Place the sensor on a stable surface in a location wh...

/** * Apply a radial mask (vignette, i.e. fading to black at the borders) to a bitmap * @param imageToApplyMaskTo Bitmap to modify */ public static void radialMask(final Bitmap imageToApplyMaskTo) { Canvas canvas = new Canvas(imageToApplyMaskTo); final float centerX = imageToApply...