Tutorial by Examples: er

PSR-8: Huggable Interface

PSR-8 is a spoof PSR (currently in Draft) proposed by Larry Garfield as an April Fools joke on 1 April 2014. The draft outlines how to define an interface to make an object Huggable. Excert from the code outline: <?php namespace Psr\Hug; /** * Defines a huggable object. * * A hugga...

PHP • PSR

Data binding with md-datapicker

datepicker-overview-example.html: <md-input-container> <input mdInput [mdDatepicker]="picker" [(ngModel)]="date" placeholder="Choose a date"> <button mdSuffix [mdDatepickerToggle]="picker"></button&gt...

angular-material2 • md-datepicker

Open datepicker on focus

This example also includes the use of properties: min max startAt startView touchUi datepicker-overview-example.html: <h2>Options</h2> <p> <md-checkbox [(ngModel)]="touch">Use touch UI</md-checkbox> <md-checkbox [(ngModel)]="filterOdd...

angular-material2 • md-datepicker

Option 1: Swap the Root View Controller (Good)

There are benefits to switching the root view controller, although the transition options are limited to those supported by UIViewAnimationOptions, so depending on how you wish to transition between flows might mean you have to implement a custom transition - which can be cumbersome. You can show t...

iOS • Swift: Changing the rootViewController in AppDelegate to present main or login/onboarding flow

Option 2: Present Alternative Flow Modally (Better)

In the most straightforward implementation, the Onboarding flow can simply be presented in a modal context, since semantically the User is on a single journey. [Apple Human Interface Guidelines – Modality][1]: Consider creating a modal context only when it’s critical to get someone’s attention, ...

iOS • Swift: Changing the rootViewController in AppDelegate to present main or login/onboarding flow

Creating/Using Transducers

So the most used functions on Clojure map and filter have been modified to return transducers (composable algorithmic transformations), if not called with a collection. That means: (map inc) returns a transducer and so does (filter odd?) The advantage: the functions can be composed into a single f...

clojure • Transducers

AVPlayer Example

AVPlayer *avPlayer = [AVPlayer playerWithURL:[NSURL URLWithString:@"YOUR URL"]]; AVPlayerViewController *avPlayerCtrl = [[AVPlayerViewController alloc] init]; avPlayerCtrl.view.frame = self.view.frame; avPlayerCtrl.player = avPlayer; avPlayerCtrl.delegate = self; [...

iOS • AVPlayer and AVPlayerViewController

Using CMake to define the version number for C++ usage

The possibilities are endless. as you can use this concept to pull the version number from your build system; such as git and use that version number in your project. CMakeLists.txt cmake_minimum_required(VERSION 3.8) project(project_name VERSION "0.0.0") configure_file(${path to con...

cmake • Using CMake to configure preproccessor tags

Passing of data using Timer

If you you want to pass some data with the timer trigger you can do it with the userInfoparameter. Here is the simple approach that gives brief idea about how you can pass the data to triggered method from the Timer. [Swift 3] Timer.scheduledTimer(timeInterval: 1.0, target: self, selector:#selec...

iOS • NSTimer

Transfer Learning using Keras and VGG

In this example, three brief and comprehensive sub-examples are presented: Loading weights from available pre-trained models, included with Keras library Stacking another network for training on top of any layers of VGG Inserting a layer in the middle of other layers Tips and general rule-of-t...

keras • Transfer Learning and Fine Tuning using Keras

Generate User model from command line

To generate json user model with username, password_hash, email_id, created_at, updated_at, type mix phoenix.gen.json User users username:string email_id:string password_hash:string timestamps()

phoenix-framework • Ecto models usage in phoenix

Page, DOM and Browser loading

This is an example to explain the variations of load events. onload event <body onload="someFunction()"> <img src="image1" /> <img src="image2" /> </body> <script> function someFunction() { console.log("Hi! I am l...

JavaScript • Events

Delegate Can be used as a layer to reduce boilerplate

Consider Kotlin's Null Type system and WeakReference<T>. So let's say we have to save some sort of reference and we wanted to avoid memory leaks, here is where WeakReference comes in. take for example this: class MyMemoryExpensiveClass { companion object { var reference: WeakR...

Kotlin • Delegated properties

create the new controller with name API

<?php defined('BASEPATH') OR exit('No direct script access allowed'); class Api extends CI_Controller { //default value private $login_credential; function __construct() { parent::__construct(); //for user authentication $this->load->library('session'); ...

codeigniter • Make API in Codeigniter

Retrieve some data from API add following function in API controller

/***************************** @return all events ****************************/ public function getallevents(){ //get data from model $events = array( array('Event 1', '2015-04-03'), array('Event 2', '2015-04-03'), array('Event 3', '2015-06-16'), array('Event 4', '2015-0...

codeigniter • Make API in Codeigniter

log in user API for allow access of some private data for perticular user

/***************************** login user @required : username and password via post method only @return user data if login successfull otherwise error message ****************************/ public function login(){ $username=$this->input->post('username'); $password=$this->input-...

codeigniter • Make API in Codeigniter

user log out api to destroy the session of loged in user

/*************************** log out user ***************************/ public function logout(){ //delete all session session_destroy(); $this->output->set_output(json_encode(array('status'=>true,'msg'=>'log Out successfully'))); }

codeigniter • Make API in Codeigniter

Cryptographically Secure Random Data

There are times when the framework's Random() class may not be considered random enough, given that it is based on a psuedo-random number generator. The framework's Crypto classes do, however, provide something more robust in the form of RNGCryptoServiceProvider. The following code samples demonstr...

C# Language • Cryptography (System.Security.Cryptography)

Overview

Suppose you have an E-commerce cloud having various Microservices as shopping cart service, Order service, Inventory service and so on. You need to have an API gateway as an Edge service to the outer world. The API gateway abstracts the details(host & port) about the underline Microservices. ...

microservices • API Gateway

Insert values in dynamic SQL

Example below inserts value into the table from the previous example: declare query_text varchar2(1000) := 'insert into my_table(id, column_value) values (:P_ID, :P_VAL)'; id number := 2; value varchar2(100) := 'Bonjour!'; begin execute immediate query_text using id, value; end; / ...

Oracle Database • Dynamic SQL