parameter-passing

问题 I am using SQL Server 2005 Business Intelligence Studio and struggling with returning an integer value from a very simple execute SQL Task. For a very simple test, I wrote the SQL Statement as: Select 35 As 'TotalRecords' Then, I specified ResultSet as ResultName = TotalRecords and VariableName = User::TotalRecords When I execute this, the statement is executed but the variable doesn't have the updated value. However, it has the default value that I specified while variable definition. The

问题 int func(int a, int& b){ if (a < 3){ return b; } else{ b++; return func( a/10, b); } } I think b here is passed by pointer which is the same as passing by reference. What is passing by address, how it differs from passing by reference? Is there any variable in above is passed by address? Also, why func(40, 0) gave me an error as output? 回答1: Let me try to make you understand in easy way. When you declared any variable in your c++ program then compiler create an entry in the symbol table for

问题 Okay, so I'm trying to use the new Files.write method in Java. Here is a link It says the StandardOpenOption is optional, but everytime I leave it blank, and even when I do put something in there I get a compiler error. For Example... try{ Files.write("example.txt",byte[] byteArray); } catch(Exception e){} will result in The method write(Path, byte[], OpenOption...) in the type Files is not applicable for the arguments (Path, String) 回答1: This has nothing to do with NIO and everything to do

问题 So I'm trying to use a vector to recapitulate this command, which works well on my data grid.arrange(Sig1.plot,Sig2.plot,Sig3.plot,Sig4.plot). The vector is > Plots.restricted [1] "Sig1.plot,Sig2.plot,Sig3.plot,Sig4.plot" > class(Plots.restricted) [1] "character" However, doing grid.arrange(as.name(Plots.restricted),ncol=1) returns the following error Error in arrangeGrob(..., as.table = as.table, clip = clip, main = main, : input must be grobs! Alternatively, I tried Plots.reference<- paste

问题 if i call a function A passing a parameter param, in which an asynchronous function B is called, will the callback C of the asynchronous function B be able to use the parameter param given to function A ? if yes, will this change if in the time between the function B start and the callback C is invoked i re-invoke function A? Example: function A(param) { value1 = param; doc = "hello"; //this is the async function B; database.insert(doc, function() { //this is the invoked callback C when the

问题 @all, I am trying to create an InstallShield installation (the one that can be integrated in visual studio 2013) In the tab custom actions I'd like to start a program that is placed in the [commonfolder]. As a commandline parameter I want to pass the installation path the user give to install the application. See the attached illustration. Now as you can see the command line already has a some info I want to pass the install dir. as a parameter. Thanks in advance 来源： https://stackoverflow.com

问题 I know my title may be a little convoluted but I am really quite confused and couldn't think of a better title. My problem: I have a main class that creates a new intent . This new intent is basically just a popup with an EditText in it and one button. My main class creates the intent as so: Intent i = new Intent("com.stevedub.GS.INPUTMPG"); startActivity(i); What I want to do is somehow get the data that the user inputs into the EditText in the new Intent and use that integer in my main

问题 I am using SSRS 2008. This is my URL: http://mybox/ReportServer/Pages/ReportViewer.aspx?/BI/PlayerProfiler+v3.0&id=548127&SP=FS In my report I have 2 parameters the ID and the SP. The ID is a plain text box and the SP is a drop down. For some reason the ID does populate the text box but the SP does not want to get selected with the way I am passing the URL. Why not?? The display value and the real value is FS.... 回答1: I found the problem! There was a space next to my actual value of the SP

问题 I am trying out ASP.Net MVC2 by building a small sample website which, amongst other features provides the user with a 'Contact Us' page. The idea is to allow a user to enter their name, email address, message subject and message. To send the message the user clicks on an ActionLink. This is the view: <% Html.BeginForm(); %> <div> <%: Html.Label("Name")%> <br /> <%: Html.TextBox("txtName", "",new { style = "width:100%" })%> <br /> <%: Html.Label("Email address")%> <br /> <%: Html.TextBox(

问题 I asked this question here (thinking I would help people) Creating an unnecessary getter and unearthed a huge area of ignorance I have. In this answer it was pointed out to me I had a fatal flaw in my code and I quote for ease: "This is wrong: public Patient(final String ptNo, final String ptName, final String procDate, final int procType, final String injury, final String drName) throws IOException { Patient.ptNo = getPtNo(); Patient.ptName = getPtName(); Patient.procDate = getProcDate();