Tutorial by Examples: d

List of commonly used S3 AWS CLI Commands Create Bucket aws s3 mb s3://bucket-name Remove Bucket aws s3 rb s3://bucket-name List Buckets aws s3 ls List contents inside the bucket aws s3 ls s3://bucket-name List Bucket with a path aws s3 ls s3://bucket-name/path Copy file aws s3...

In this example, I created a form which is used to register a new user. In the options passed to the form, I give the different roles a user can have. Creating a reusable class for my form with configured data class and an extra option that fills the choice field to pick a userrole: class UserType...

To be able do deal with form events, it's important to attach the request, that is send to a controller action after submitting a form, to the form created in that action. public function registerAction(Request $request) { $data = new ExampleObject(); $form = $this->createForm(Example...

Basic grid In Ionic you can declare rows by setting the row class to a element. Rows will be elements which are horizontally aligned and anything inside this element everything will belong to the row. Inside the row you can declare different width columns. You have a choice of the following declara...

Assume you want to undo a dozen of commits and you want only some of them. git rebase -i <earlier SHA> -i puts rebase in "interactive mode". It starts off like the rebase discussed above, but before replaying any commits, it pauses and allows you to gently modify each commit as i...

docker logs --follow <containerid> This tails the output of the running container. This is useful if you did not set up a logging driver on the docker daemon.

If you use the LOAD DATA INFILE command to populate a table with existing data, you will often find that the import fails due to duplicates. There are several possible ways to overcome this problem. LOAD DATA LOCAL If this option has been enabled in your server, it can be used to load a file that ...

By default the ArrayAdapter creates a view for each array item by calling toString() on each item and placing the contents in a TextView. Example: ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, myStringArray); where androi...

AmCharts provides a load-balanced, reliable CDN for loading the libraries directly from our web server. Use https://www.amcharts.com/lib/3/ as a base URL for includes. <script src="https://www.amcharts.com/lib/3/amcharts.js"></script> <script src="https://www.amcharts...

To do that, [download][1] a required amCharts product ZIP archive. Unzip it and place somewhere on your web server. I.e. in /amcharts/ sub-directory. Then simply load them using <script> tags: <script src="amcharts/amcharts.js"></script> <script src="amcharts/...

Besides main required functional includes, you may need other includes, like themes and plugins. Those reside in /themes/ and /plugins/ sub-directories respectively. I.e.: <script src="https://www.amcharts.com/lib/3/amcharts.js"></script> <script src="https://www.amc...

The FIXED function rounds a number to the specified number of decimals defined by the decimals parameter, formats the number in decimal format using a comma as a separator unless specified as not required defined by the parameter no_commas, and returns the result as text. The decimals parameter is o...

Consider a structure of the following classes should be constructed in XAML an then read into a CLR object: namespace CustomXaml { public class Test { public string Value { get; set; } public List<TestChild> Children { get; set; } = new List<TestChild>(); ...

sed -i -e cmd file will modify file even if its permissions are set to read-only. This command behaves similarly to sed -e cmd file > tmp; mv -f tmp file rather than sed -e cmd file > tmp; cat tmp > file; rm tmp The following example uses gnu sed: $ echo 'Extremely important data' &gt...

AWS Lambda supports Transparent scalability and availability Developer friendly operations and no need to manage servers Native integration to AWS services No need to pay for idle time RESTful integration Monitoring the RESTful interface using AWS API gateway

This is one of the simplest lambda function. It is equivalent to Hello World program. To create your first program follow the below mentioned steps. Login to AWS Console Click Lambda under compute Click create a Lambda Function Skip select blueprint section In configure trigger click on the...

If A is a complex and quadratic matrix there exists a unitary Q such that Q*AQ = T = D + N with D being the diagonal matrix consisting of the eigenvalues and N being strictly upper tridiagonal. A = [3 6 1 23 13 1 0 3 4]; T = schur(A); We also display the runtime of schur dependent on ...

The purpose of this documentation is to use a scanner without any user interface. A common use is to upload a PDF scanned file directly to Google Drive or Dropbox just by pressing scanner-buttons. scanbd permits to trigger actions from the scanner buttons, it uses sane. What make things a little b...

QObjects come with their own alternative lifetime concept compared to native C++'s raw,unique or shared pointers. QObjects have the possibility to build an objecttree by declaring parent/child relationships. The simplest way to declare this relationship is by passing the parent object in the const...

To create a user dev with password password123 MongoClient mongo = new MongoClient("localhost", 27017); MongoDatabase db = mongo.getDatabase("testDB"); Map<String, Object> commandArguments = new BasicDBObject(); commandArguments.put("createUser", "dev&qu...