From 5.3.4/7 When the value of the expression in a direct-new-declarator is zero, the allocation function is called to allocate an array with no elements. From 3.7.3.1/2 The effect of dereferencing a pointer returned as a request for zero size is undefined. Also Even if the size of the space requested [by new] is zero, … Read more
You can just write System.Diagnostics.Process.Start(“http://google.com”); EDIT: The WebBrowser control is an embedded copy of IE. Therefore, any links inside of it will open in IE. To change this behavior, you can handle the Navigating event.
Method 1 (using new) Allocates memory for the object on the free store (This is frequently the same thing as the heap) Requires you to explicitly delete your object later. (If you don’t delete it, you could create a memory leak) Memory stays allocated until you delete it. (i.e. you could return an object that … Read more
With only one level of inheritance, your example may not let you see the real benefits of Object.create. This methods allows you to easily implement differential inheritance, where objects can directly inherit from other objects. On your userB example, I don’t think that your init method should be public or even exist, if you call … Read more
Objects There is no benefit to using new Object(); – whereas {}; can make your code more compact, and more readable. For defining empty objects they’re technically the same. The {} syntax is shorter, neater (less Java-ish), and allows you to instantly populate the object inline – like so: var myObject = { title: ‘Frog’, … Read more
In order to create an instance of a generic type in a function you must constrain it with the “new” flag. public static string GetAllItems<T>(…) where T : new() However that will only work when you want to call the constructor which has no parameters. Not the case here. Instead you’ll have to provide another … Read more
Placement new allows you to construct an object in memory that’s already allocated. You may want to do this for optimization when you need to construct multiple instances of an object, and it is faster not to re-allocate memory each time you need a new instance. Instead, it might be more efficient to perform a … Read more
Unless you are forced to use C, you should never use malloc. Always use new. If you need a big chunk of data just do something like: char *pBuffer = new char[1024]; Be careful though this is not correct: //This is incorrect – may delete only one element, may corrupt the heap, or worse… delete … Read more
There are two widely-used memory allocation techniques: automatic allocation and dynamic allocation. Commonly, there is a corresponding region of memory for each: the stack and the heap. Stack The stack always allocates memory in a sequential fashion. It can do so because it requires you to release the memory in the reverse order (First-In, Last-Out: … Read more
Let’s get pedantic, because there are differences that can actually affect your code’s behavior. Much of the following is taken from comments made to an “Old New Thing” article. Sometimes the memory returned by the new operator will be initialized, and sometimes it won’t depending on whether the type you’re newing up is a POD … Read more