argument-passing

问题 I can see there is a way to have a method in Java which accepts any number of arguments of a specified type: http://www.java-tips.org/java-se-tips/java.lang/how-to-pass-unspecified-number-of-arguments-to-a-m.html but is there a way to make a method which accepts any number of arguments of any type? 回答1: All Java Objects extend the Object class. So you can make your function accept an Object array: public void func(Object[] args) { } Or if you want to be able to pass nothing: public void func

问题 edit This is not a duplicate of Undefined reference to static class member. That question explored the cause of the problem (which I explain below). Here, I'm looking for a different solution from those proposed in the answers to that questions (which implied changing the declaration/definition of the constexpr variable to be used -- essentially by adding a definition in a compilation unit). I have created a little variadic template function make_string() to generate a std::string from any

问题 Suppose I create two vectors, one on the heap and one on the stack: Vector<int> vector1; Vector<int>* vector2 = new Vector<int>; I then pass vector1 into two functions, say, foo1(Vector<int>) and foo2(Vector<int>&) . I also pass vector2 into foo3(Vector<int>*) . Since I'm new to C++, I'm rather confused by the difference in behaviours here. Am I right to say that for foo1 , the entire vector1 gets copied, and for foo2 , only the reference to vector1 gets passed into the function? But isn't

问题 I need to be able to pass an arbitrary method to some function myFunction : void myFunction(AnyFunc func) { ... } It should be possible to execute it with other static, instance, public or private methods or even delegates: myFunction(SomeClass.PublicStaticMethod); myFunction(SomeObject.PrivateInstanceMethod); myFunction(delegate(int x) { return 5*x; }); Passed method may have any number of parameters and any return type. It should also be possible to learn the actual number of parameters and

问题 any ideas on how I can pass the Get-PSCallStack with out having it unroll. It appears to be a system.object[] but from what i have read online they don't remain intact when passed and " unroll ". I tried placing a comma in front to prevent it but that did not work. function Pass-Callstack ([System.Object]$arg0) { Write-Host 'Start Pass-Callstack' $psCallStack = $arg0 $psCallStackType = $psCallStack.GetType() $psCallStackLength = $psCallStack.Length $psCallStackCommand0 = $psCallStack[0]

问题 i have main class that i like to pass its pointer reference to on of the objects i creating but it gives me error : Error 1 error C2664: 'GameController::GameController(GameLayer *&)' : cannot convert parameter 1 from 'GameLayer *const ' to 'GameLayer *&' what i have in the GameLayer ( the main object ) m_pGameController = new GameController(this); and in the GameController i have this constructor GameController(GameLayer*& GameLayer) { setGameLayer(gameLayer); // to GameLayer memeber ) } the

问题 I've create a custom admin module but i can't put a content in it, it always is blank i'm trying with a simple code for test, but nothing seem to work public function indexAction() { $this->loadLayout(); $this->_addContent($this->getLayout()->createBlock('adminhtml/template')->setTemplate('uhmaadmin/contactos.list.phtml')->toHtml()); $this->renderLayout(); } an in the .phtml echo 'hello world'; but doesn't print nothing, if a make an error in the phtml, the system crash, it means that its

问题 EDIT: With the code below now, I am unsure on how to print out the bookmarks and the tags correctly I’m completely new to CI and I have recently hit a road block. I’m very unsure how I would go about passing a function argument from the view file to the controller so I could use it on a function? I have a foreach loop on the view going through the all the items passed by function get_latest_bookmarks. That function returns a ID for each item and I am wanting to use this with another function

问题 In my pursuit of a solution to another environment-variable/batch-file related problem, I have once again come across a problem I have visited before (but cannot for the life of me remember how, or even if I solved it). Say you have two BAT files (or one batch file and the command line). How can one pass an environment variable name to the other so that it can read the variable? The following example does not work: A.BAT: @call b.bat path B.BAT: @echo %%1% > A.BAT > %1 > B.BAT path > %1 It is

问题 In my pursuit of a solution to another environment-variable/batch-file related problem, I have once again come across a problem I have visited before (but cannot for the life of me remember how, or even if I solved it). Say you have two BAT files (or one batch file and the command line). How can one pass an environment variable name to the other so that it can read the variable? The following example does not work: A.BAT: @call b.bat path B.BAT: @echo %%1% > A.BAT > %1 > B.BAT path > %1 It is