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What is the difference between Call, Apply and Bind in …
The difference between Call, Apply and Bind can be explained with below examples, Call: The call() method invokes a function with a given this value and arguments provided one by one var employee1 = { firstName: "John", lastName: "Rodson" }; var employee2 = { firstName: "Jimmy", lastName: "Baily" };Read more
The difference between Call, Apply and Bind can be explained with below examples,
Call: The call() method invokes a function with a given
this
value and arguments provided one by oneApply: Invokes the function with a given
this
value and allows you to pass in arguments as an arraybind: returns a new function, allowing you to pass any number of arguments
Call and apply are pretty interchangeable. Both execute the current function immediately. You need to decide whether it’s easier to send in an array or a comma separated list of arguments. You can remember by treating Call is for comma (separated list) and Apply is for Array.
Whereas Bind creates a new function that will have
See lessthis
set to the first parameter passed to bind().What is a prototype chain in Javascript
Prototype chaining is used to build new types of objects based on existing ones. It is similar to inheritance in a class based language. The prototype on object instance is available through Object.getPrototypeOf(object) or **proto** property whereas prototype on constructors function is available tRead more
Prototype chaining is used to build new types of objects based on existing ones. It is similar to inheritance in a class based language.
The prototype on object instance is available through Object.getPrototypeOf(object) or **proto** property whereas prototype on constructors function is available through Object.prototype.

See lessWhat are the possible ways to create objects in JavaScript
There are many ways to create objects in javascript as below Object constructor: The simplest way to create an empty object is using the Object constructor. Currently this approach is not recommended. var object = new Object(); Object's create method: The create method of Object creates a new objectRead more
There are many ways to create objects in javascript as below
Object constructor:
The simplest way to create an empty object is using the Object constructor. Currently this approach is not recommended.
Object’s create method:
The create method of Object creates a new object by passing the prototype object as a parameter
Object literal syntax:
The object literal syntax (or object initializer), is a comma-separated set of name-value pairs wrapped in curly braces.
Note: This is an easiest way to create an object
Function constructor:
Create any function and apply the new operator to create object instances,
Function constructor with prototype:
This is similar to function constructor but it uses prototype for their properties and methods,
This is equivalent to an instance created with an object create method with a function prototype and then call that function with an instance and parameters as arguments.
(OR)
ES6 Class syntax:
ES6 introduces class feature to create the objects
Singleton pattern:
A Singleton is an object which can only be instantiated one time. Repeated calls to its constructor return the same instance and this way one can ensure that they don’t accidentally create multiple instances.
WordPress Error – Image rotation is not supported by your web host
It took me about 6 hours to find out why my custom thumbnails were not created after uploading an image. When I looked in the uploads folder on my server, only the original file was added. This error occurs when you have GD library missing. If you are on ubuntu and using php-fpm, then you just instaRead more
It took me about 6 hours to find out why my custom thumbnails were not created after uploading an image. When I looked in the uploads folder on my server, only the original file was added.
This error occurs when you have GD library missing.
If you are on ubuntu and using php-fpm, then you just install php-gd library.
In my case i ran
apt-get install php8.0-gd
Do not forget to restart the php-fpm
Deleting all files from a folder using PHP?
If you want to delete everything from folder (including subfolders) use this combination of array_map, unlink and glob: array_map( 'unlink', array_filter((array) glob("path/to/temp/*") ) );
If you want to delete everything from folder (including subfolders) use this combination of array_map, unlink and glob:
array_map( ‘unlink’, array_filter((array) glob(“path/to/temp/*”) ) );
See lessWhat is the friend keyword in C++?
The friend keyword in C++ allows the programmer to declare friend functions and classes. class frnd{ private: void somefunc(); }; int frndFUNC(int a) {} class A{ friend class frnd; friend int frndFUNC(int a); }; Some important points about friend functions and classes: Declarations of friend functioRead more
The friend keyword in C++ allows the programmer to declare friend functions and classes.
Some important points about friend functions and classes:
What does HttpResponse do in Django?
The correct answer is b) Returns a string with HTML response
The correct answer is b) Returns a string with HTML response
See less