parameters

问题 I want to get pointer-to-member as template parameter to the foo1. Here is code: struct baz{ int qux; }; template<typename C, typename T, T C::*m> struct foo1{}; template<typename C, typename T> void barr2(T C::*m){ } template<typename C, typename T> void barr1(T C::*m){ barr2(m); // ok foo1<C, T, &baz::qux> _; // ok foo1<C, T, m> f; // g++4.6.1 error here; how to pass 'm' correctly ? } int main(){ barr1(&baz::qux); } So how it should look like? 回答1: It doesn't work for you because you are

问题 To simplify my question: why this works (mapcan #'(lambda (l) (list '1 '2) ) '(a b)) and this doesn't (mapcan #'(lambda (l) '(1 2) ) '(a b)) ? I have to write a function that substitutes an element through all elements of list D at all levels of a given list L, using Map Functions. I tried using mapcan for this: (defun subAll (l k d) (cond ((and (atom l) (eq l k)) d) ((and (atom l) (not (eq l k))) (cons l '())) (t (cons (mapcan #'(lambda (l) (subAll l k d)) l) '())))) but I get following

问题 The Route is: routes.MapRoute( "Ajax", // Route name "BizTalk/Services/{action}", // URL with parameters new { // Parameter defaults controller = "BizTalk" } ); My Controller is: public JsonResult AjaxTest(string s, int i, bool b) { return Json("S: " + s + "," + "I: " + i + "," + "B: " + b); } My jQuery Code: $(document).ready(function() { $("#btn_test").click(function() { var s = "test"; var i = 8; var b = true; $.ajax({ type: "POST", cache: false, url: "/BizTalk/Services/AjaxTest", data: {

问题 i'm looking for a way to do something like this in Haxe: function foo(...args) { for (arg in args) { ... } } Someone around here who can help me? 回答1: Haxe doesn't have rest arguments, mostly because those are untyped by nature, and the language should help going typed to have safest code. Typed code can be checked and also optimized by the compiler. More errors compile-time, less errors run-time. Still the same result of rest arguments can be somehow achieved in a few ways, depending on what

问题 I have a list of methods that do pretty much the same thing, except a few differences: void DoWork(string parameter1, string parameter2) { //Common code ... //Custom code ... //Common code ... } I want to streamline the solution with reusing the common code by passing custom code from another method. I assume I have to use an action with parameters to accomplish this, but can't figure out how. 回答1: The other answers are great, but you may need to return something from the custom code, so you

问题 I'm creating a BIRT report using certain parameters. I have an int parameter (Number of months) which values can be from 1 to 12. I need to check if the value is bigger than 12. In such case it should show me a customized message and not an error like it is doing right now. Error: org.eclipse.birt.report.service.api.ReportServiceException: The validation for parameter "nummonths" fails. Current script: if (params["nummonths"].value > 12 ) { false; } else { true; } I create reports in BIRT to

问题 I have a few questions concerning Lists, classes and variables in clojure. This may seem quite stupid but how do I access elements in a List ? I'm coding a program that allows you to manipulate a phonebook; You can add an entry, delete one or print the information about one. This leads me to two questions : Is there a way to create a class "entry" that would contain "name" "adress" "phone number" variables ? or is that impossible in clojure (and functional programming in general ?) If I can't

问题 I need to run a program from the local user's file system by clicking an html link. When i use this <a href="C:\Windows\System32\NETSTAT.EXE">CLICK</a> It works fine. But When i try to pass a parameter to the exe file it fails. <a href="C:\Windows\System32\NETSTAT.EXE -a">CLICK</a> Anyone has an idea how is it possible to pass the parameter? Thanks UPDATE The use of this is the following: An online system sends emails to users if a new record is available in the system. Therefore the users

问题 i'm new in abap (OO) but developed before in java and wrote a class abap "cl_caretaker" which should handle the operations on database table and the local copy (intern table) of it. I want to make the following method call: caretaker->show_table( caretaker->get_users( ) ) . with: caretaker = cl_caretaker=>get_instance( ). "singleton instance METHODS: "! get a list of all user which registrated for FCP "! "! @parameter rt_users | users which are registrated for FCP get_users RETURNING value(rt

问题 This question already has answers here : GWT: Capturing URL parameters in GET request (4 answers) Closed 6 years ago . I'm modifying the default project that Eclipse creates when you create a new project with Google Web Toolkit and Google App Engine. It is the GreetingService sample project. How can I read a request parameter in the client's .java file? For example, the current URL is http://127.0.0.1:8887/MyProj.html?gwt.codesvr=127.0.0.1&foo=bar and I want to use something like request