Tutorial by Examples: for

In a string formula field, consider that some values might contain substrings which look to the browser like HTML. Unless this is intentional, it is important to protect the values from corruption. This is useful to avoid injection attacks: it prevents someone from entering HTML into a comment field...

Basic foreground images can be inserted into an email document just like they are for web pages: <img src="http://www.yourserver.com/email/images/logo.png"> And they can be made links by wrapping them in an <a href> tag: <a href="http://www.yourwebsite.com"&gt...

You can use Map<String, List<String>> myMap = new HashMap<>(); instead of Map<String, List<String>> myMap = new HashMap<String, List<String>>(); However, you can't use List<String> list = new ArrayList<>(); list.add("A"); ...

If you are using Windows open Git Bash. If you are using Mac or Linux open your Terminal. Before you generate an SSH key, you can check to see if you have any existing SSH keys. List the contents of your ~/.ssh directory: $ ls -al ~/.ssh # Lists all the files in your ~/.ssh directory Check...

NSMutableURLRequest *request = [[AFHTTPRequestSerializer serializer] multipartFormRequestWithMethod:@"POST" URLString:@"http://example.com/upload" parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) { [formData appendPartWithFileURL:[NSURL ...

Check if browser supports vibrations if ('vibrate' in window.navigator) // browser has support for vibrations else // no support

Suppose we have a SharePoint list and it has four fields viz. Title, Full Name, Email, Mobile Number etc. Now if you want to apply custom validation in New/Edit Item form, you can easily do it with CSR code. The below mentioned can validate following conditions in forms: Blank values in fields ...

One example of machine learning algorithms is the Random Forest alogrithm (Breiman, L. (2001). Random Forests. Machine Learning 45(5), p. 5-32). This algorithm is implemented in R according to Breiman's original Fortran implementation in the randomForest package. Random Forest classifier objects ca...

Each log line is formatted as follows: timestamp source[dyno]: message Timestamp - The date and time recorded at the time the log line was produced by the dyno or component. The timestamp is in the format specified by RFC5424, and includes microsecond precision. Source - All of your app...

Lets say continue with User example (you may have controller with store method and update method). To use FormRequests you use type-hinting the specific request. ... public function store(App\Http\Requests\StoreRequest $request, App\User $user) { //by type-hinting the request class, Larave...

Lets have a look at the native app lifecycle methods for different platforms. Android. //Xamarin.Forms.Platform.Android.FormsApplicationActivity lifecycle methods: protected override void OnCreate(Bundle savedInstanceState); protected override void OnDestroy(); protected override void OnPause()...

Consider the following code: public async Task MethodA() { await MethodB(); // Do other work } public async Task MethodB() { await MethodC(); // Do other work } public async Task MethodC() { // Or await some other async work await Task.Delay(100); } ...

double res[MAX]; int i; #pragma omp parallel { #pragma omp for for (i=0;i< MAX; i++) { res[i] = huge(); } } The for loop will be executed in parallel. huge() is some method which can take too long to get execute. OpenMP supports a shortcut to write the ab...

NgFor provides Some values that can be aliased to local variables index -(variable) position of the current item in the iterable starting at 0 first -(boolean) true if the current item is the first item in the iterable last -(boolean) true if the current item is the last item in the iterable ...

To generate schema, view, controller, migration file for the repository, default CRUD templates and test files for a model (like a scaffolding in Rails) one can use phoenix.gen.html mix task like this: mix phoenix.gen.html Book books title note:text pages:integer author_id:references:authors Wh...

import pyglet from pyglet.gl import * win = pyglet.window.Window() @win.event() def on_draw(): #OpenGL goes here. Use OpenGL as normal. pyglet.app.run()

Using immutable locals: Uses less horizontal space but more vertical space than the "anonymous temporaries" template. Preferable over the "anonymous temporaries" template if the when expression is in a loop--in that case, regex definitions should be placed outside the loop. im...

Pre build controls to handle Grids, Inputs, Graphs, Trees, and so on. It supports an event model that preserves state over HTTP, which benefits line-of-business Web application development. The Web Forms-based application provides dozens of events that are supported in hundreds of server co...

Different platforms can have separate implementations of the same method. This example also illustrates how build tags and file suffixes can be used together. File main.go: package main import "fmt" func main() { fmt.Println("Hello World from Conditional Compilation Doc!&...

Data types to string formatting Data types like int, float, double, long, boolean can be formatted to string using String.valueOf(). String.valueOf(1); //Output -> "1" String.valueOf(1.0); //Output -> "1.0" String.valueOf(1.2345); //Output -> "1.2345" Stri...