parameter-passing

问题 In a program in the Learning OpenCV book: void onTrackbarSlide(int pos) { cvSetCaptureProperty(g_capture,CV_CAP_PROP_POS_FRAMES,pos); } And, in another location: if(frames!=0) { cvCreateTrackbar("Position","Example3",&g_slider_position,frames,onTrackbarSlide); } Where are we retrieving the value of pos in the onTrackSlide(int pos) function from? What value will be passed to it from cvCreateTrackbar() ? 回答1: Check the docs and you'll see the function signature is: cvCreateTrackbar(const char*

问题 I use $.(ajax) function extensively in my app to call ASP.net web services. I would like to write a wrapper in order to centralize all the ajax calls. I found few simple solutions, but none address an issue of passing parameters to delegates, for example, if i have: $.ajax({ type: "POST", url: "http://localhost/TemplateWebService/TemplateWebService/Service.asmx/GetFoobar", data: jsonText, contentType: "application/json; charset=utf-8", dataType: "json", success: function(response) { var

问题 I want to pass a parameter value from one API-Request to 2nd API-request so that 2nd api display result accordingly: Here is my function componentWillMount : componentWillMount() { axios.post('https://APISITE/api/Auth/AuthorizeByApplication?applicationId=b72fc47a-ef82-4cb3-8179-2113f09c50ff&applicationSecret=e727f554-7d27-4fd2-bcaf-dad3e0079821&token=cd431b31abd667bbb1e947be42077e9d') .then((response) => { console.log(response.data); }); axios.get('https://APISITE//api/Stock/GetStockItems', {

问题 I would like to have confirm about RMI theory. Let us suppose that Client A requests a remote reference of an object O to a Server B. Well, now if In O interface (Interf) there is a method like: void foo(Interf obj); When Client A calls O.foo(O) it passes stub reference (before received ) and then Server does not use its local reference but the Stub Object (received by Client), and so each call on O methods by Server will make use of its TCP/IP service. Is it Ok? You should feel free to add

问题 I am attempting to write a parameterized test for an interface Foo, which declares a method getFooEventInt(int, int). I have written a paramterized test that works for a single instance of Foo (a FooImpl object). public class FooTest { @ParameterizedTest @MethodSource("getFooEvenIntProvider") public void getFooEvenIntTest(int seed, int expectedResult) { Foo foo = new FooImpl(); Assertions.assertEquals(expectedResult, foo.getFooEvenInt(seed)); } private static Stream getFooEvenIntProvider() {

问题 In My main controller to switch views I just call another Action from my controller, but my model I am passing is null after being passed, and is not null beforehand. public ActionResult Index(ViewModelViewImages model) { return RedirectToAction("ViewImages", new { passedModel = model }); } In the same Controller.. public ActionResult ViewImages(ViewModelViewImages passedModel) { //passedModel.(WhateverMyAttributesAre) = null every time } However I can write out my variables and they pass

问题 My landing page (HTML) communicates with a GWT app via URL with one parameter login , so depending on the button you press on the landing page it will redirect to http://myapp.appspot.com?login=1 (or 2 or 3). In the GWT app I process that parameter but I need to remove it from URL without reloading the webpage. Is there a way to do this? If not, can I pass this parameter in a different way to my GWT app? Thanks 回答1: I think that you cannot change the parameter without reloading. But your GWT

问题 I tried to call boost::phoenix::function based on lambda function with parameters and failed. If I call it without parameters in such a way: const auto closure = [](){ cout<< "test" << endl; }; typedef decltype(closure) ClosureType; const boost::phoenix::function<ClosureType> lazyFunc (std::move(closure)); lazyFunc()(); all compiles nice. But when I declare at least one parameter of lambda: const auto closure = [](int& param) { cout<<"Test" << param << endl; }; typedef decltype(closure)

问题 & "$THIS_SCRIPTS_DIRECTORY_PATH\New-NuGetPackage.ps1" -PushOptions "$pushOptions" ` -Verbose -ProjectFilePath $project -PO "$packOptions" -NPFPPTNG So if I provide the command line above in PowerShell the call works correctly. If I try something like this: if ($NoPromptForPushPackageToNuGetGallery) { $xtraOptions += " -NPFPPTNG " } & "$THIS_SCRIPTS_DIRECTORY_PATH\New-NuGetPackage.ps1" -PushOptions "$pushOptions" ` -Verbose -ProjectFilePath $project -PO "$packOptions" $xtraOptions this fails.

问题 In MS Excel, if you create a QueryTable with Microsoft Query, and your SQL query cannot be visually presented by Microsoft Query, then you are not allowed to provide parameters for that query. Which is a shame, so there is this awesome technique that allows parameters anyway: {CALL sp_executesql (N'select top (@a) * from mytable', N'@a int', ?)} You provide the query in the ODBC CALL form and it works with parameters. Unless it does not. While on some computers it works flawlessly, on other