Tutorial by Examples

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The <progress> element is new in HTML5 and is used to represent the progress of a task <progress value="22" max="100"></progress> This creates a bar filled 22%

Progress bars can be styled with the progress[value] selector. This example gives a progress bar a width of 250px and a height of 20px progress[value] { width: 250px; height: 20px; } Progress bars can be especially difficult to style. Chrome / Safari / Opera These browsers use the -web...

For browsers that do not support the progress element, you can use this as a workaround. <progress max="100" value="20"> <div class="progress-bar"> <span style="width: 20%;">Progress: 20%</span> </div> </pr...

In Internet Explorer 10+ and Edge, Microsoft provides the -ms-high-contrast media selector to expose the "High Contrast" setting from the browser, which allows the programmer to adjust their site's styles accordingly. The -ms-high-contrast selector has 3 states: active, black-on-white, ...

sqoop import \ --connect <rdbms-jdbc-url> \ --username <username> \ --password <password> \ --table <table-name> Example with Mysql: sqoop import \ --connect jdbc:mysql://mysql.example.com/testdb \ --username root \ --password root \ --table employees CSV file ...

Using --where tag sqoop import \ --connect <rdbms-jdbc-url> \ --username <username> \ --password <password> \ --table <table-name> \ --where "<condition>" Example with Mysql: sqoop import \ --connect jdbc:mysql://mysql.example.com/testdb \ --userna...

In this example you will learn how to generate RSA-OAEP key pair and how to convert private key from this key pair to base64 so you can use it with OpenSSL etc. Please note that this process can also be used for public key you just have to use prefix and suffix below: -----BEGIN PUBLIC KEY----- --...

So, have you ever wondered how to use your PEM RSA key pair that was generated by OpenSSL in Web Cryptography API? If the answers is yes. Great! You are going to find out. NOTE: This process can also be used for public key, you only need to change prefix and suffix to: -----BEGIN PUBLIC KEY----- ...

In the light of the latest httpoxy vulnerabilities, there is another variable, that is widely misused. HTTP_X_FORWARDED_FOR is often used to detect the client IP address, but without any additional checks, this can lead to security issues, especially when this IP is later used for authentication or...

Suppose you want to prevent unauthorized users to access the page then you have to put barrier to them by authorizing access. We can do this by using spring-security which provides basic authentication by securing all HTTP end points. For that you need to add spring-security dependency to your proje...

As from version 5.4, PHP comes with built-in server. It can be used to run application without need to install other http server like nginx or apache. Built-in server is designed only in controller environment for development and testing purposes. It can be run with command php -S : To test it cr...

Class Reference - API v1.0 Class Reference - API v1.1

C99 Since C99, C has variable length arrays, VLA, that model arrays with bounds that are only known at initialization time. While you have to be careful not to allocate too large VLA (they might smash your stack), using pointers to VLA and using them in sizeof expressions is fine. double sumAll(si...

There is a limit to the depth of possible recursion, which depends on the Python implementation. When the limit is reached, a RuntimeError exception is raised: RuntimeError: Maximum Recursion Depth Exceeded Here's a sample of a program that would cause this error: def cursing(depth): try: ...

When the only thing returned from a function is a recursive call, it is refered to as tail recursion. Here's an example countdown written using tail recursion: def countdown(n): if n == 0: print "Blastoff!" else: print n countdown(n-1) Any computat...

By default Python's recursion stack cannot exceed 1000 frames. This can be changed by setting the sys.setrecursionlimit(15000) which is faster however, this method consumes more memory. Instead, we can also solve the Tail Recursion problem using stack introspection. #!/usr/bin/env python2.4 # This...

We can declare a series of expressions in the REPL like this: Prelude> let x = 5 Prelude> let y = 2 * 5 + x Prelude> let result = y * 10 Prelude> x 5 Prelude> y 15 Prelude> result 150 To declare the same values in a file we write the following: -- demo.hs module De...

The following example creates a FileSystemWatcher to watch the directory specified at run time. The component is set to watch for changes in LastWrite and LastAccess time, the creation, deletion, or renaming of text files in the directory. If a file is changed, created, or deleted, the path to the f...

A common mistake a lot of people starting out with FileSystemWatcher does is not taking into account That the FileWatcher event is raised as soon as the file is created. However, it may take some time for the file to be finished . Example: Take a file size of 1 GB for example . The file apr ask c...