parameter-passing

问题 This question already has answers here : Are the days of passing const std::string & as a parameter over? (13 answers) Closed 6 years ago . There is a set of good rules to determine whether pass by value or const reference If the function intends to change the argument as a side effect, take it by non-const reference. If the function doesn't modify its argument and the argument is of primitive type, take it by value. Otherwise take it by const reference, except in the following cases: If the

问题 I need to call one python script from another script,I'm trying to do it with the help of execfile function.I need to pass a dictionary as an argument to the calling function.Is there any possibility to do that? import subprocess from subprocess import Popen -------To read the data from xls----- ret_lst = T_read("LDW_App05") for each in ret_lst: lst.append(each.replace(' ','-')) lst.append(' ') result = Popen(['python','LDW_App05.py'] + lst ,stdin = subprocess.PIPE,stdout = subprocess.PIPE)

问题 How to pass Editor1 as Parameter: In my aspx.cs i am giving a call to a function which is in .cs file for the same project, as follows: protected void DropDownList2_SelectedIndexChanged(object sender, EventArgs e) { DropDown abs = new DropDown(); abs.dd(this.DropDownList2, this.DropDownList3); } .CS file code public void dd(DropDownList DropDownList2, DropDownList DropDownList3) { //My code which contains DropDownList2 DropDownList3 and Editor1 } The error that i am getting is: Error 1 The

问题 I'm making a student management system on apex. The short of it is a place where lecturers and students can log on. Lecturers create assignments, assign them, mark them, take attendance, record issues ...... all that, and students log on to view their attendance and results. Now when a student clicks the "My Results" link it navigates to the same page that a lecturer sees, though the select list where a student is selected to view the results of is hidden. The select list displays the

问题 I have designed Crystal Report in ASP.NET by following this link http://www.c-sharpcorner.com/UploadFile/009464/crystal-report-with-parameter-in-Asp-Net-using-C-Sharp/. I need to pass label values to Crystal Reports, example: When trying to click on button i'm getting this error: The types of the parameter field and parameter field current values are not compatible . Maybe i defined wrong parameters or something missed. This is my Crystal Reports with parameters: How to to pass parameters in

问题 I'm trying to pass a variable z = 100 from C++ to Matlab for further processing (this is just a very simplified example). I basically want this to be passed as a global variable such that I can access this variable from any Matlab function, (perhaps sent to the Matlab Workspace). Here is my C++ code (I'm using the Matlab engine from within C++): #include "opencv2/highgui/highgui.hpp" #include "opencv2/opencv.hpp" #include <iostream> #include <math.h> #include <fstream> #include <stdio.h>

问题 I am trying to build some re-usable code snippets that create a typewriter effect. It hides a paragraph and then replaces it with another paragraph with some js code that prints one character at a time. I am trying to make the id of the paragraph and the text parameters that I can re-use but I am having trouble allowing these parameters to pass through my function. Some very helpful individuals have helped me thus far but I can't figure out this final step. I will attach both my function with

问题 I have a get-parameter with name controller . When I try to pass it (with propertyChangeListener ) to my backing bean I get null instead of the real value of that parameter: <h:commandButton value="#{msg['mail.send']}" styleClass="mailbutton" action="#{mailSender.sendMail}"> <f:setPropertyActionListener target="#{mailSender.controllerName}" value="{#param.controller}"/> </h:commandButton> So, I have two questions: What is the proper way to set bean property with a get-parameter value?

问题 I am refactoring an MVC 3 application, and moved a set of similar items into a partial view so I can keep that template DRY. Since the pieces don't all have the exact same properties, I am creating anonymous types like this: var model1 = new { Description = "description 1", Message = "message 1" } and passing them to the partial view like so: @Html.Partial("_Partial", model1) The partial view is then attempting to render certain blocks based on existence of a specific property, i.e. @if

问题 We created a JSF table component for our projects which uses <ui:repeat> to create the table. A new requirement to add a table inside a table (the second table resides in a row and is collapsable) has gotten us into trouble as the <ui:repeat var="row" ...> is set statically inside the table componenten and the inner table uses the row variable of the outer table when iterating through the list. Now what i want to create is something like this: <div> <myfw:mytable dataModel="#{bean.user}"