parameter-passing

问题 This question already has answers here : How to use class name as parameter in C# (4 answers) Closed 3 years ago . I have two classs: Class Gold; Class Functions; There is a method ClassGet in class Functions , which has 2 parameters. I want to send the class Gold as parameter for one of my methods in class Functions . How is it possible? For example: public void ClassGet(class MyClassName, string blabla) { MyClassName NewInstance = new MyClassName(); } Attention: I want to send MyClassName

问题 For example, in JavaScript we could write a program like this: var a = 1; testFunction(++a, ++a, a); function testFunction(x, y, z){ document.writeln("<br />x = " + x); document.writeln("<br />y = " + y); document.writeln("<br />z = " + z); } and we would get an output: x = 2 y = 3 z = 3 This implies that parameters are truly evaluated from left to right in JavaScript. In C we would get output x = 3 y = 3 z = 3 I was wondering if we could do the same in Python or is it impossible since it's a

问题 I have many parameters to pass to the server using JAX-RS. Is there a way to pass or AarryList with the URL? 回答1: You have a few options here. Option 1: A query parameter with multiple values You can supply multiple simple values for a single query parameter. For example, your query string might look like: PUT /path/to/my/resource?param1=value1&param1=value2&param1=value3 Here the request parameter param1 has three values, and the container will give you access to all three values as an array

问题 I'm wondering the opinion of what is the best way to pass a lot of values between MULTIPLE pages. I was thinking of either saving the values to a database, using context.Items[], or Session[]. I'm not sure about what is the best method. I'm passing probably around 40 variables.This will be during a checkout process so they should be persisted through the users lifecycle. The user does not change the values after they are entered the first time. The values would be like Billing Address, First

问题 I'm wondering the opinion of what is the best way to pass a lot of values between MULTIPLE pages. I was thinking of either saving the values to a database, using context.Items[], or Session[]. I'm not sure about what is the best method. I'm passing probably around 40 variables.This will be during a checkout process so they should be persisted through the users lifecycle. The user does not change the values after they are entered the first time. The values would be like Billing Address, First

问题 Consider these classes: #include <iostream> #include <string> class A { std::string test; public: A (std::string t) : test(std::move(t)) {} A (const A & other) { *this = other; } A (A && other) { *this = std::move(other); } A & operator = (const A & other) { std::cerr<<"copying A"<<std::endl; test = other.test; return *this; } A & operator = (A && other) { std::cerr<<"move A"<<std::endl; test = other.test; return *this; } }; class B { A a; public: B (A && a) : a(std::move(a)) {} B (A const &

问题 What's the difference in the outcome between call by reference and copy/restore? Background: I'm currently studying distributed systems. Concerning the passing of reference parameters for remote procedure calls, the book states that: "the call by reference has been replaced by copy/restore. Although this is not always identical, it is good enough". I understand how call by reference and copy/restore work in principle, but I fail to see where a difference in the result may be? 回答1: Examples

问题 I have the following where I'm trying to send list/array to MVC controller method: var id = []; var inStock = []; $table.find('tbody>tr').each(function() { id.push($(this).find('.id').text()); inStock.push($(this).find('.stocked').attr('checked')); }); var params = {}; params.ids = id; params.stocked = inStock; $.getJSON('MyApp/UpdateStockList', params, function() { alert('finished'); }); in my contoller: public JsonResult UpdateStockList(int[] ids, bool[] stocked) { } both paramaters are

问题 I'm a bit confused as to how I would pass a pointer to a pointer function. I have a function that takes a pointer to a function which I understand without problem (ExecBlock). But I'm given another prototype of a function (ExecBlock2) which takes the dereferenced-pointer (I'm not sure exactly what it is) and also takes the argument if passed function has any. If someone could explain the precedence and exactly what dereferencing a pointer function would do. Isn't that just passing the

问题 I'm using a simple shell script to provision software for a vagrant setup as seen here. But can't figure out a way to take the command line arguments passed in to vagrant and send them along to an external shell script. Google reveals that this was added as a feature but I can't find any documentation covering it or examples out there. 回答1: You're correct. The way to pass arguments is with the :args parameter. config.vm.provision :shell, :path => "bootstrap.sh", :args => "'first arg' second"