terminology

问题 I'm studying java language for SCJP test. It is little bit hard to understand "polymorphic method". Could you explain it for me? or give me some links? 回答1: "Polymorphic" means "many shapes." In Java, you can have a superclass with subclasses that do different things, using the same name. The traditional example is superclass Shape , with subclasses Circle , Square , and Rectangle , and method area() . So, for example // note code is abbreviated, this is just for explanation class Shape {

问题 I would like to have a simple explanation of the differences between genetic algorithms and genetic programming (without too much programming jargon). Examples would also be appreciated. Apparently, in genetic programming, solutions are computer programs. On the other hand, genetic algorithms represent a solution as a string of numbers. Any other differences? 回答1: Genetic programming and genetic algorithms are very similar. They are both used to evolve the answer to a problem, by comparing

问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 7 years ago . What is the difference between a webservice and an API? Is the difference more than the protocol used to transfer data? thanks. 回答1:

问题 What is a coroutine? How are they related to concurrency? 回答1: Coroutines and concurrency are largely orthogonal. Coroutines are a general control structure whereby flow control is cooperatively passed between two different routines without returning. The 'yield' statement in Python is a good example. It creates a coroutine. When the 'yield ' is encountered the current state of the function is saved and control is returned to the calling function. The calling function can then transfer

问题 What is a coroutine? How are they related to concurrency? 回答1: Coroutines and concurrency are largely orthogonal. Coroutines are a general control structure whereby flow control is cooperatively passed between two different routines without returning. The 'yield' statement in Python is a good example. It creates a coroutine. When the 'yield ' is encountered the current state of the function is saved and control is returned to the calling function. The calling function can then transfer

问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 7 years ago . Could anybody explain in plain words how Cloud computing works? I have read the Wikipedia article, but still not sure that I understand how cloud actually works. 回答1: Aside from the latest marketing term?

问题 Can some one tell me what the name of the following popup window is: How do I create such a popup for my application? 回答1: To be more specific, this is indeed called a Notification (a specific type of balloon) see also here and the icon from which it comes from is called a Notification area Icon . The area of the screen in which this icon is located is called the Notification Area . This is not specific to Windows - other operating systems have their own form of Notification Areas. The

问题 I'm reading the PnP BIOS specification and stumbled across the following paragraph: Actively monitor the INT 19h bootstrap vector The current System BIOS Architecture allows option ROMs to hook INT 19h indiscriminately. By actively monitoring control of INT 19h, the System BIOS may regain control of the Bootstrap process to ensure that the Operating System is loaded from the proper device and in the proper manner. On line 3, the possibility to "hook" an interrupt is mentioned. As far as I

问题 As far as I understand, deserialization is turning a stream of bytes into an object. Parsing is kinda the same, usually turning a string into some data structure. Is parsing a type of deserialization? Can you consider them synonymous? 回答1: Parsing is the more general term. Deserialization is commonly used in the context of object oriented languages. The result of deserialization is an object while the result of parsing can be any type of data. Even in the context of object creation, parsing

问题 What is the second line? (Seen while answering another question.) int * x = new int [1] ; int * y = new (x) int; After the second line x and y have the same value (point to a same place). What's the difference between y = x and the second line? Is it like a constructor or something? 回答1: It's placement new. It constructs a new int in the memory pointed to by x . If you try: int * x = new int [1]; *x = 5; std::cout << *x << std::endl; int * y = new (x) int; *y = 7; std::cout << *x << std::endl