parameter-passing

问题 One way to avoid boxing in C# is to pass the value type by reference. I have read that a generic method can also be used to avoid boxing. Although writing a generic method solely for the purpose of avoiding boxing seems to be a little extreme - if the type will always be the same. My question is - if writing code for the best performance and to avoid boxing, is it reasonable to pass all value types (like an int) by reference - even though the method in question is only working on the object

问题 I have seen people using $mail->get_include_contents() but I don't know exactly how it works. I want to active an account via email. I've got a template php, html or tpl, which I want to pass the username, a random key, email, etc. Consider that I'm using Smarty in all my project. On my gmail.php I've got: $mail->msgHTML(file_get_contents(dirname(__FILE__).'/MailActivation.php'), $variables); Could somebody explain to me how I could do it? 回答1: ¡Finally! This was the result: <?php date

问题 I have an object that I create in Form2 (Main form is Form1). When I'm done assigning properties to the object in Form2, I would like to have it available in Form1. The object is created in Form2 public partial class Form2 : Form private List<POI> POIs_3D; public Form2() { InitializeComponent(); POIs_3D = new List<POI>(); } Then I assign add some values to the list object and want to have it available in Form1. I know it may be simple but I can't figure out.. EDIT: This is the code that opens

问题 I am getting ReferenceError:something_anything_nothing is not defined error... Please help. <script> function show(str) { var r=str; alert(r); } </script> <?php $l='something_nothing_anything'; echo "<select onChange='show($l)'>"; echo "<option></option>"; echo "</select>"; ?> 回答1: You probably need to wrap the value in $l in quotes, like this: $l='"something_nothing_anything"'; 回答2: $l='Somethin_nothin_anythin'; $buffer="<select onchange='show(\'".$l."\')'>"; $buffer.= "<option></option>";

问题 Let's assume we have the following code in a language that looks a lot like C. int A[2]; A[0]=4; A[1]=7; void f(int x, int y) { x++; A[1]++; y++; printf(x, y, A[0], A[1]); } void main() { int k = 0; f(k, A[k]); print(k, A[0], A[1]); } I want to define the output of this program. I haven't understood well the difference between the call-by-name and the call-by-macro-expansion method. So, in the call-by-name method, k is initialized to 0 and then f() function is called. x becomes equal to "k"

问题 Wicket has a couple of options for creating links. E.g. this <wicket:link><a href="Page2.html?productId=1694969292874602935">Go to Page 2 </a></wicket:link> This shows it passing in a parameter. However, we cant use as we need the linked to page to popup, and :link autolink page doesnt do this. The only other way to do a link is like this: <a href="#" wicket:id="launchlink">click here</a> The question is, using the above notation, How to I give it a parameter the designers can enter?

问题 I was wondering if it is possible to pass arguments to include("file.jl") . For example we parse the ARGS in the file.jl and use them in there. Similar to what we do in a command line by passing arguments. 回答1: Reassigning ARGS to make file.jl think it received arguments works, but leads to a warning (because it overwrites Base.ARGS ). A better methods perhaps is to use isdefined to check for a different source of parameters before using ARGS in file.jl . For example, file main.jl would be:

问题 I was wondering if it is possible to pass arguments to include("file.jl") . For example we parse the ARGS in the file.jl and use them in there. Similar to what we do in a command line by passing arguments. 回答1: Reassigning ARGS to make file.jl think it received arguments works, but leads to a warning (because it overwrites Base.ARGS ). A better methods perhaps is to use isdefined to check for a different source of parameters before using ARGS in file.jl . For example, file main.jl would be:

问题 Pre-Dramatic Hi, maybe this question is a duplicate, but I am relative new to template programming and actually I am not able to find a simple and short solution (-> only finding megabytes of " roxxor-template-magic " which I don't understand) matching my concrete and simple problem and so I feel a little bit lost now. Pre-Information I want to use a "type_container" as template parameter for a class. The container is a simple struct, which should also contain some typedefs for template

问题 I'm working on a little side project for work and have made some classes and methods. One of the classes represents a shelf in our inventory and another represents each a bin on the shelf. I have a method to add a new bin to the shelf and I added some logic to make sure it was passed a Location object before it is added to the shelf (right now I'm using lists while I develop before moving everything to a DB). However I just read in a Python book that I have that it is usually better to handle