I know there should be a delete operator with which I'm not concerned in somewhere. I just wondering, wow, it worked. Where is the argument "size" coming from? #include<iostream> #include&lt...

In some use case, you'll need to allocate storage before creating objects inside this storage. Then in order to create these objects, you may need to use placement new: T *pobj = new(pstorage); ye...

Can the new operator throw an exception in real life? And if so, do I have any options for handling such an exception apart from killing my application? Update: Do any real-world, new-heavy applica...

When I am creating a new Flutter project in Android Studio, lib folder is missing. How to fix it? I run Flutter doctor, everything is fine but I am facing this problem.

Is it okay( and legal) to delete a pointer that has been passed as a function argument such as this: #include<iostream> class test_class{ public: test_class():h(9){} int h; ~test_class()...

I know how to dynamically allocate space for an array in C. It can be done as follows: L = (int*)malloc(mid*sizeof(int)); and the memory can be released by: free(L); How do I achieve the equ...

I am trying to create a project in google cloud console, but when I go to "New Project" option the following message appears: "You must select a parent organization or folder." If I press "Brows...

The documentation for the std::allocator<T>::allocate member function says in ([allocator.members]) that: Remarks: The storage for the array is obtained by calling ​::​operator new ([new.del...

I have created a new project called auth using react-native init auth at terminal.When i tried to run the project using react-native run-ios. The build failed and gave a error 'React/RCTBridgeDeleg...

I stumbled upon Stack Overflow question Memory leak with std::string when using std::list<std::string>, and one of the comments says this: Stop using new so much. I can't see any reason you ...

So I was trying to get back the menu settings that dissapear after ubutu made the upgrade to 22.04 version. Honestly I'm new in all this. This is the code that I'm getting: I try: root@blast-...

I am confused as to why the new operator isn't working as I expected it to. Note: All classes below are defined in the same namespace, and in the same file. This class allows you to prefix any co...

I'm trying to create a new object of type T via its constructor when adding to the list. I'm getting a compile error: The error message is: 'T': cannot provide arguments when creating an instan...

I have following code : System.out.println(" | 1 2 3 4 5 6 7 8 9"); System.out.println("----------------------------"); System.out.println(""); I use println to create a new line. Is it possi...

What I am making is a weather forecast website, and what I need is the days of the week (ie. "Sunday", "Monday", etc.). To get tomorrow's date I am just putting "+ 1" like someone suggested in anot...

How do i declare a 2d array using the 'new' operator? My book says this: int (*p)[4]; p=new[3][4]; but it doesn't make sense to me. p is a pointer to an array of 4 ints, so how can it be made to...

I want this to tell me the Name of both ItemA and ItemB. It should tell me "Subitem\nSubitem", but instead it tells me "Item\nSubitem". This is because the "Name" variable defined in the Subitem cl...

class Foo attr_accessor :name, :age, :email, :gender, :height def initalize params @name = params[:name] @age = params[:age] @email = params[:email] . . . end This seems like a silly wa...

I have a C++ concept for checking that an array of objects can be dynamically allocated: template< class T, int N > concept heap_constructible = requires() { delete[] new T[N]; }; And I fou...

Recently, I was made aware of the potential issues of memory alignment for Fixed-size vectorizable Eigen objects. The correct code as stated in the doc: class Foo { ... Eigen::Vector2d v; ... pu...

Many answers on this site mentions that delete() calls destructor. But the sample code below seems to call delete() inside the destructor. What is the correct usage of delete() when object is initi...

If 'Test' is an ordinary class, is there any difference between: Test* test = new Test; and Test* test = new Test();

Here I have defined immutable class str. In __new__ method I am changing the values of instances such as "hello" to uppercase. Why should we do it using __new__ when we can define u...

Recently I thought of converting a side project of mine into Typescript. But I have trouble with calling functions using new. I am trying to call a function imported from another file like this: //...

I need to write a strings into a text file from C#, each string on a new line...How can I do this?