call

问题 I'm really confused with this! I have 2 classes, Club and Membership . In Membership I have the method, getMonth() , and in Club I have joinedMonth() which takes the parameter, 'month' - so a user enters a month and then I want it to return the Membership's which joined in that specific month. I am trying to call the getMonth() method from class Club, so that I can then go on to compare the integers of the months. But, when I try to call the method, I just get the mentioned "non-static method

问题 In Javascript, Function.call() can call Function given a this value and zero or more arguments. Function.call itself is a function. So in theory, Function.call should be the same (or similarly acting) function as Function.call.call . In V8, this seems to be the case: > Function.call === Function.call.call true When we call Function.call() , we get an anonymous function > Function.call() [Function: anonymous] However, I can't call .call() on Function.call . > Function.call.call() TypeError:

问题 A similar question was asked Parameterised Modules in Erlang, it is about "what". My question is about "why"? OTP Technical Board - Decisions affecting R16 contains the board decision about this issue, but I don't know the reason behind the decision. Stateful Module in Programming Erlang 2ndEdition by Joe Armstrong introduces this feature in detail, but I don't see the author's attitude. If we read the official document Function Calls, we see this feature is deliberately skimmed. In fact, the

问题 i defined a function that switch my proxy settings every now and then, problem is that i want it to run in a loop without manual intervention. But when i execute the program in sudo it gets called the first time en runs smoothly, second time it asks me for my sudo password. Here is the bit of code: def ProxySetting(Proxy): print "ProxyStetting(Proxy)" call("networksetup -setwebproxy 'Wi-Fi' %s" "on" % Proxy, shell = True) call("networksetup -setsecurewebproxy 'Wi-Fi' %s" "on" % Proxy, shell =

问题 I want to call a program ( .exe ), which is written in C++ and compiled, from Python. The executable takes as input two files and returns a score. I need to do this for multiple files. So, I would like to write a small script in python which loops over multiple files, passes them to the executable and gets back the values. Now, I have done my search and I know about SWIG and Boost::Python may be an option but I was trying to find if there is an easier way. I do not need to 'extend' the C++

问题 I'm new to C# and I'm trying to learn to usage of DLLs. I'm trying to wrap my objects in a DLL, and then use it in my program. public class Foo // its in the DLL { public int ID; public void Bar() { SomeMethodInMyProgram(); } } So I try to pack this to a DLL but I can't, because compiler doesn't know what the SomeMethodInMyProgram() is. I would like to use it like: class Program // my program, using DLL { static void Main(string[] args) { Foo test = new Foo(); test.Bar(); } } 回答1: Add the DLL

问题 Consider the two simple Java classes below: First Example class Computer { Computer() { System.out.println("Constructor of Computer class."); } void On() { System.out.println("PC turning on..."); } void working() { System.out.println("PC working..."); } void Off() { System.out.println("PC shuting down..."); } public static void main(String[] args) { Computer my = new Computer(); Laptop your = new Laptop(); my.On(); my.working(); your.On(); your.working(); my.Off(); your.Off(); } } Second

问题 I have been searching an entire afternoon and have found no solution to call in matlab a function by specifying its path and not adding its directory to the path. This question is quite similar to Is it possible to call a function that is not in the path in MATLAB?, but in my case, I do not want to call a built-in function, but just a normal function as defined in an m-file. I think handles might be a solution (because apparently they can refer to functions not on the path), but I again found

问题 I have two components. I want to call a method of the first component from the second component. How can I do it? Here is my code. First Component class Header extends React.Component{ constructor(){ super(); } checkClick(e, notyId){ alert(notyId); } } export default Header; Second Component class PopupOver extends React.Component{ constructor(){ super(); // here i need to call Header class function check click.... // How to call Header.checkClick() from this class } render(){ return ( <div

问题 okay so I have this code in body: <input type="text" value="haha" id="full_name"/> And this code in script <script language="javascript" type="text/javascript"> function first(){ var nameContent=document.getElementById('full_name').value; } function second() { first(); y=nameContent; alert(y); } second(); </script> I want a alert showing the value of the element full_name, but it doesn't seem to work, does anyone know why? :S 回答1: nameContent only exists within the first() function, as you