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Web Sockets is a next-generation bidirectional communication technology for web applications that operates over a single socket and is exposed via a JavaScript interface in HTML 5 compliant browsers. Once you get a Web Socket connection with the web server, you can send data from browser to server by calling a send() method, and receive data from server to browser by an onmessage event handler.Two way communication between the browsing contexts is called channel messaging. It is useful for communication across multiple origins.While creating messageChannel, it internally creates two ports to sending the data and forwarded to another browsing context. ... Read More
Python and most mainstream languages do not allow changing how operators look. If you're trying to replace something like a == b with a equals b, you can't do that. In Python the restriction is quite intentional — an expression such as a equals b would look ungrammatical to any reader familiar with Python.
There are multiple sections in coding ground. Please go at the bottom and check advanced IDE section and there you will find old version of Coding Ground which still allows to use multiple files.https://www.tutorialspoint.com/codingground.htm
Permanent License keys are valid only until the predefined expiration date. License keys specify the amount of memory licensed to target HANA installation.
No this cannot be done. It's part of the Python language itself. That's how the language parses the expressions and builds parse and syntax trees. From the documentation:When performing mathematical operations with mixed operators, it is important to note that Python determines which operations to perform first, based on a pre-determined precedence. This precedence follows a similar precedence to most programming languages.
Note that there are 2 types of Permanente license key types in HANA. If you are using unenforced license key, your system will be locked out in this case.Unenforced: If the unenforced license key is installed and consumption of HANA system exceeds the license amount of memory, the operation of SAP HANA is not affected in this case.Enforced: If the Enforced license key is installed and consumption of HANA system exceeds the license amount of memory, HANA system gets locked. If this situation occurs, HANA system has to be restarted or a new license key should be requested and installed. ... Read More
In Python 2.x as well as != symbols are defined as 'not equal to' operators. In Python 3, operator is deprecated.
HTML5 enabled browsers to have a video element that you can use to play a video on your site. To let you know, flowplayer and other flash based video streaming players use the FLV format. It has the same encoding as H.264. FFMPEG can convert videos to FLV, feel free to work it with flowplayer. Use the flvtool2 for reading and writing FLV metadata from and to the file. Use the tools to create your videos and stream them through flowplayer.
@ symbol is used to define decorator in Python. Decorators provide a simple syntax for calling higher-order functions. By definition, a decorator is a function that takes another function and extends the behavior of the latter function without explicitly modifying it.we have two different kinds of decorators in Python:Function decoratorsClass decorators A decorator in Python is any callable Python object that is used to modify a function or a class. A reference to a function or a class is passed to a decorator and the decorator returns a modified function or class. The modified functions or classes usually contain calls to ... Read More
Reversed set operators are operators that are defined as:s & z corresponds to s.__and__(z) z & s corresponds to s.__rand__(z)These don't make much sense in normal operations like and, add, or, etc of simple objects. However in case of inheritence, reversed operations are particularly useful when dealing with subclasses because if the right operand is a subclass of the left operand the reversed operation is attempted first. You may have different implementations in parent and child classes.These reversed operations are also used if the first operand returns NotImplemented.