The new keyword in JavaScript can be quite confusing when it is first encountered, as people tend to think that JavaScript is not an object-oriented programming language. What is it? What problems ...

You should use new when you wish an object to remain in existence until you delete it. If you do not use new then the object will be destroyed when it goes out of scope.

Jan 19, 2011 · The new () Constraint lets the compiler know that any type argument supplied must have an accessible parameterless--or default-- constructor So it should be, T must be a class, and have an accessible parameterless--or default constructor.

Jun 3, 2013 · The naked, global new first calls operator-new to allocate memory and then constructs the object; the global delete calls the destructor and deallocates the memory. But all other overloads of new and delete are different: An overloaded new expression calls an overloaded new operator to allocate memory and then proceeds to construct the object.

Jul 20, 2013 · If the new() generic constraint is applied, as in this example, that allows the class or method (the AuthenticationBase<T> class in this case) to call new T(); to construct a new instance of the specified type. There is no other way, short of reflection (this includes using System.Activator, to construct a new object of a generic type.

The new modifier doesn't actually change anything (other than suppressing a compile-time warning). You get the exact same behavior without new (if you tolerate compiler warnings).

Jul 11, 2013 · Note that if you declared it var a = new { }; and var o = new object();, then there is one difference, former is assignable only to another similar anonymous object, while latter being object, it can be assigned to anything.

Dec 29, 2017 · I installed anaconda in C:\\Program Files\\Anaconda3. Every time to create a new env, I just do cmd and write: conda create --name envname python=3.5 But how can i install a new env from the "enviro...

Oct 15, 2018 · I've Python 3 running in a linux server. I need to install some libraries (obviously) so I'm trying : pip3 install numpy Which, is resulting in the following error: Collecting numpy Retrying (R...

Aug 19, 2012 · I need to add http headers to the HttpClient before I send a request to a web service. How do I do that for an individual request (as opposed to on the HttpClient to all future requests)? I'm not s...