Tutorial by Examples: g

Matlab supports synchronous and asynchronous communication with a serial port. It is important to chose the right communication mode. The choice will depend on: how the instrument you are communicating with behave. what other functions your main program (or GUI) will have to do aside from managi...

#include <stdio.h> int main(void) { /* define a small bit-field that can hold values from 0 .. 7 */ struct { unsigned int uint3: 3; } small; /* extract the right 3 bits from a value */ unsigned int value = 255 - 2; /* Binary 11111101 */ small.u...

You can convert a numeric string to various Java numeric types as follows: String to int: String number = "12"; int num = Integer.parseInt(number); String to float: String number = "12.0"; float num = Float.parseFloat(number); String to double: String double = "1...

namespace App\Controller; class PostsController extends AppController { public function initialize(){ parent::initialize(); // code that you want to run before every action } public function view($id) { //Your code here } }

Pass each variable to view at a time $this->set('color', 'pink'); $this->set('color', $color); Pass multiple variables to view together via compact() function $color1 = 'pink'; $color2 = 'red'; $this->set(compact('color1', 'color2'));

You can retrieve post data as Array. $post_data= $this->request->data; You can retrieve post data for particular key. $this->request->data['field']; Retrieve specific key value $this->request->data('key_name'); Retrieve specific key value of nested array $this->requ...

There are a several different ways of sorting a collection. Sort() The sort method sorts the collection: $collection = collect([5, 3, 1, 2, 4]); $sorted = $collection->sort(); echo $sorted->values()->all(); returns : [1, 2, 3, 4, 5] The sort method also allows for passing in ...

To translate strings, you will have to create translation files. To do so, django ships with the management command makemessages. $ django-admin makemessages -l fr processing locale fr The above command will discover all strings marked as translatable within your installed apps and create one l...

Sometimes it is required to display a notification at a specific time, a task that unfortunately is not trivial on the Android system, as there is no method setTime() or similiar for notifications. This example outlines the steps needed to schedule notifications using the AlarmManager: Add a Broa...

Retrieving sensor information from the onboard sensors: public class MainActivity extends Activity implements SensorEventListener { private SensorManager mSensorManager; private Sensor accelerometer; private Sensor gyroscope; float[] accelerometerData = new float[3]; f...

TabLayout provides a horizontal layout to display tabs, and is commonly used in conjunction with a ViewPager. Make sure the following dependency is added to your app's build.gradle file under dependencies: compile 'com.android.support:design:25.3.1' Now you can add items to a TabLayout in your ...

One of the most used attribute for LinearLayout is the weight of its child views. Weight defines how much space a view will consume compared to other views within a LinearLayout. Weight is used when you want to give specific screen space to one component compared to other. Key Properties: wei...

<svg> <defs> <linearGradient id='g' y1="100%" x2="100%"> <stop offset='0%' stop-color='yellow' /> <stop offset='100%' stop-color='green' /> </linearGradient> </defs> <rect width=...

<svg> <defs> <radialGradient id="g"> <stop offset="10%" stop-color="green" /> <stop offset="90%" stop-color="white" /> </radialGradient> </defs> <rect width='100%' height...

JSON is a cross language, widely used method to serialize data Supported data types : int, float, boolean, string, list and dict. See -> JSON Wiki for more Here is an example demonstrating the basic usage of JSON :- import json families = (['John'], ['Mark', 'David', {'name': 'Avraham'}]) ...

Here is an example demonstrating the basic usage of pickle:- # Importing pickle try: import cPickle as pickle # Python 2 except ImportError: import pickle # Python 3 # Creating Pythonic object: class Family(object): def __init__(self, names): self.sons = names ...

The Firebase Realtime Database allows ordering and querying data. For small data sizes, the database supports ad hoc querying, so indexes are generally not required during development. Before launching your app though, it is important to specify indexes for any queries you have to ensure they contin...

The most simple way to create a thread is by calling a selector "in the background". This means a new thread is created to execute the selector. The receiving object can be any object, not just self, but it needs to respond to the given selector. - (void)createThread { [self performS...

Every thread has access to a mutable dictionary that is local to the current thread. This allows to cache informations in an easy way without the need for locking, as each thread has its own dedicated mutable dictionary: NSMutableDictionary *localStorage = [NSThread currentThread].threadDictionary;...

$ mkdir 20{09..11}-{01..12} Entering the ls command will show that the following directories were created: 2009-01 2009-04 2009-07 2009-10 2010-01 2010-04 2010-07 2010-10 2011-01 2011-04 2011-07 2011-10 2009-02 2009-05 2009-08 2009-11 2010-02 2010-05 2010-08 2010-11 2011-02 2011-05 2011-08 2011...