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  • pass a pointer of a class

    - by small_potato
    Say I have Class1 and Class2 and I want a shallow copy constructor for Class1. Class1 has a member variable, which is a pointer pointing to a Class2 instance. Also I have to be able to change the Class2 ptr is pointing at. in header file: class Class1 { Class2* ptr; ... } in source file: Class1::Class1() { ptr = new Class2(); } ...... Class2* Class1::Exchange(Class2* newClass2) { Class2* temp; ptr = newClass2; return temp; } ...... Now say Class1 original; Class1 shallowCopy(original); Class2* newClass2 = new Class2(); Class2* oldClass2; oldClass2 = orignal.Exchange(newClass2); delete oldClass2; now I want is associate original.ptr with shallowCopy.ptr, when I implement the shallow copy constructor, how do I make sure these two pointer always point at the same Class2? I mean in the class above, the oldClass2 is deleted, so ptr of shallowCopy is pointing at nothing. If I don't delete oldClass2, ptrs of original and shallowCopy are pointing at different Class2 instance.

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  • Arduino variable going blank after first pass.

    - by user541597
    I have an arduino sketch that takes a timet and when that timet is equal to the current time it sets the new timet to timet + 2. For example: char* convert(char* x, String y){ int hour; int minute; sscanf(x, "%d:%d", &hour, &minute); char buf[6]; if (y == "6"){ if (hour > 17){ hour = (hour+6)%24; snprintf(buf, 10, "%d:%d", hour, minute ); }else if (hour < 18){ //hour = hour + 6; minute = (minute + 2); snprintf(buf, 10, "%d:%d", hour, minute); } } if (y == "12"){ if (hour > 11){ hour = (hour+12)%24; snprintf(buf, 10, "%d:%d", hour, minute ); } else if (hour < 12){ hour = hour + 12; snprintf(buf, 10, "%d:%d", hour, minute); } } if (y == "24"){ hour = (hour+24)%24; snprintf(buf, 10, "%d:%d", hour, minute ); } return buf; } sketch starts for example at 1:00am timet is set to 1:02, at system time 1:02 timet == system time my loops looks like this: if (timet == currenttime){ timet = convert(timet) } From this now when ever I check the value of timet it should equal 1:04, however I am getting the correct value at the first run after the execution of convert however everytime after that my timet value is blank. I tried changing the code instead of using the if loop I only run the convert function when I send for example t through the serial monitor, this works fine and outputs the correct timet after the execution of the convert function, So I figured the problem is in the if loop... Any ideas?

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  • How to pass or display mySQL data based on subscription or billing

    - by spm
    I want to build a PHP based site where, the user can view data based on the types of data they've paid for. Allow me to use something simple for an example. Let's say historical data for basketball was not readily available but could be purchased. Simple information such as the Winner, Loser, Final score and date are all stored in a mySQL table. What would be involved so that, when the user logs in, they can only see the historical data they have paid for. My theories so far about the architecture: I imagined a mySQL table storing True or False values for all historical game data they have paid for. Based on this, a 'data chart' object enables the user to view all data within their mySQL row which has a value of 'true.' Follow ups: Assuming I am correct, what methods are popular or practical for this type of service.

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  • Pass codeigniter translation array to jQuery Function

    - by grolle
    Hi, I’ve a problem by passing an array to a jQuery function. Some code: // in the language file $lang['daynames'] = array('So','Mo','Di','Mi','Do','Fr','Sa'); //In the view var config = { basePath : '' }; // THIS WORKS GREAT!!! var days = new array('lang-line('daynames')); ?'); //in the js-File $(function() { $("#datepicker").datepicker({ dateFormat : 'dd.mm.yy', showWeek : true, firstDay : 1, weekHeader : 'KW', dayNamesMin : days, monthNames : ['Januar','Februar','März','April', 'Mai','Juni','Juli','August','September', 'Oktober','November','Dezember'], onSelect : function(dateText,inst){ } }); }); If I do lang-line(‘daynames’)); ? in the view everything looks fine, so what is wrong here? Thanks and best regards ...

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  • C++: Pass array created in the function call line

    - by Jarx
    How can I achieve a result like somebody would expect it according to the following code example: // assuming: void myFunction( int* arr ); myFunction( [ 123, 456, 789 ] ); // as syntactical sugar for... int values[] = { 123, 456, 789 }; myFunction( values ); The syntax I thought would work spit out a compile error. How can I define an argument array directly in the line where the function is called?

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  • Pass arguments to a parameter class object

    - by David R
    This is undoubtedly a simple question. I used to do this before, but it's been around 10 years since I worked in C++ so I can't remember properly and I can't get a simple constructor call working. The idea is that instead of parsing the args in main, main would create an object specifically designed to parse the arguments and return them as required. So: Parameters params = new Parameters(argc, argv) then I can call things like params.getfile() Only problem is I'm getting a complier error in Visual Studio 2008 and I'm sure this is simple, but I think my mind is just too rusty. What I've got so far is really basic: In the main: #include "stdafx.h" #include "Parameters.h" int _tmain(int argc, _TCHAR* argv[]) { Parameters params = new Parameters(argc, argv); return 0; } Then in the Parameters header: #pragma once class Parameters { public: Parameters(int, _TCHAR*[]); ~Parameters(void); }; Finally in the Parameters class: include "Stdafx.h" #include "Parameters.h" Parameters::Parameters(int argc, _TCHAR* argv[]) { } Parameters::~Parameters(void) { } I would appreciate if anyone could see where my ageing mind has missed the really obvious. Thanks in advance.

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  • Java: pass an event to another component

    - by John
    Sorry I don't know if this is very clear, but I'm pretty new to Java. So I have a JFrame with a BorderLayout containing a JPanel and a JButton. What I want to do is when something happens in my JPanel, I want for example change the text of the JButton, or enable/disable it. How would I do that? How can I access the JButton from the JPanel? I know some ways of doing it but I don't think they're the best way to do it. What would be the best way to do this? Thanks in advance

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  • a Problem to pass a string between 2 view controller (iPhone)

    - by Toma
    my problem is quite simple, but as a beginner, I'm lost :D I have to view controller : view one call view 2 like this : self.FacebookTypeRequest =@"favoris"; FaceBookViewController *viewcontrol = [[FaceBookViewController alloc]initWithNibName:@"FaceBookViewController" bundle:[NSBundle mainBundle]]; viewcontrol.title = @"FaceBook"; [self.navigationController pushViewController:viewcontrol animated:YES]; [viewcontrol release]; How can i send my string facebookTypeRequest to my view controller 2 ? Thanks for your help

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  • how could I pass closure problems in order to increment a global var

    - by hyptos
    I have a simple goal, I would like to increment a variable but I'm facing the closure problem. I've read why this s happening here How do JavaScript closures work? But I can't find the solution to my problem :/ let's assume this part of code I took from the link. function say667() { // Local variable that ends up within closure var num = 666; var sayAlert = function() { alert(num); //incrementation } num++; return sayAlert; } I would like to increment num within the function and to keep the changes to num. How could I do that ? Here is the JsFiddle where I have my problem, I can't figure out how to increment my totalSize and keep it. http://jsfiddle.net/knLbv/2/ I don't want a local variable that ends up with closure.

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  • JUnit @Rule to pass parameter to test

    - by 01
    I'd like to create rule to be able to do something like this @Test public void testValidationDefault(int i) throws Throwable {..} Where i is parameter passed to the test by @Rule. However I do get java.lang.Exception: Method testValidationDefault should have no parameters is there any way to bypass it and set the i parameter in the @Rule?

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  • Why can't I pass in a uniqueidentifier/GUID to a stored procedure

    - by chobo2
    Hi I have this SP USE [TestDB] GO /****** Object: StoredProcedure [dbo].[sp_test] Script Date: 06/12/2010 11:47:27 ******/ SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO CREATE PROCEDURE [dbo].[sp_test] @id uniqueidentifier AS BEGIN select * from TestTbl where ProductId= @id END I then went to the SP with ms sql 2005 and clicked execute. It comes up with a box where I entered in the GUID. I copied and pasted it straight from my test database. I get this error. Msg 102, Level 15, State 1, Line 5 Incorrect syntax near 'cac671b'. So why can't I sent in GUIDs? even ones that are copied right from the database and must be valid as they where allowed into the db.

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  • Pass form data from block to a page view in Drupal

    - by abdesignuk
    I am using the location module and views module for a postcode search, which works fine in a page display using views. However I want the user to be able to enter their postcode into a block on the homepage and clicking submit my module sends them to the page created in views and the postcode is set as a session S_SESSION['postcode'] before sending to this page, next I want the location page to load but using the session to display the locations automatically. Any ideas I am using hook_form_submit() and inside that declaring the $form_state as a session and then using $form_state['redirect'] to sent to the views page path.

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  • AS3 Pass parameter by value

    - by alejandrobog
    Hi, im having problems with the following code: for (var i:Number=0; i<numFaces;i++){ var faceLoader:Loader = new Loader(); faceLoader.contentLoaderInfo.addEventListener( Event.INIT, function(fle:Event){ LoadCara(i,faceLoader); trace("LoadCara:" + i.toString()); } ); } function LoadCara(index:int,loader:Loader){ if(index == 0) { trace("cara1:" + index.toString()); cara1.removeChildAt(0); cara1.addChild(loader); } else if(index == 1) { cara2.removeChildAt(0); cara2.addChild(loader); }} The problem is that im sending the variable i to the function LoadCara on every iteration, and its always called with the last value of i. I would like this function to be called with the appropiate index. Hope I explain myself, thanks in advance.

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  • What's a good, threadsafe, way to pass error strings back from a C shared library

    - by PerilousApricot
    Hello, all- I'm writing a C shared library for internal use (I'll be dlopen()'ing it to a c++ application, if that matters). The shared library loads (amongst other things) some java code through a JNI module, which means all manners of nightmare error modes can come out of the JVM that I need to handle intelligently in the application. Additionally, this library needs to be re-entrant. Is there in idiom for passing error strings back in this case, or am I stuck mapping errors to integers and using printfs to debug things? Thanks!

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  • Pass data via ajax to dialog Jquery

    - by user342391
    I am trying to post data from my form to a jquery dialog that loads external content. I am serializing the form data which works (appears in the url) but the dialog won't open: $("#wavajax button").click(function() { $.post({url: 'player/index.php', data: $("#wavajax").serialize(), success: function (data) { $("#recordingdialog").load("player/index.php", [], function(){ $("#recordingdialog").dialog("open"); } }); return false; }); What am I doing wrong, am I going about it the right way???

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  • Pass in Dynamic number of parameters to a stored procedure

    - by xrum
    Hi, I have a function in my .NET application, that needs to do a search of an unknown number of parameters. for example: select * from tbl where x=1 or x=2 or x=3 or x=4 is it possible to do in .NEt and SQL? how do i go about creating dynamic parameters in .NET (I was thinking doing it with a loop) but then how do i declare them in my stored procedure? does sql have arrays? please help. thank you!

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  • pass custom environment variables to System.Diagnostics.Process

    - by Mike Ruhlin
    I'm working on an app that invokes external processes like so: ProcessStartInfo startInfo = new ProcessStartInfo(PathToExecutable, Arguments){ ErrorDialog = false, RedirectStandardError = true, RedirectStandardOutput = true, UseShellExecute = false, CreateNoWindow = true, WorkingDirectory = WorkingDirectory }; using (Process process = new Process()) { process.StartInfo = startInfo; process.Start(); process.BeginErrorReadLine(); process.BeginOutputReadLine(); process.WaitForExit(); return process.ExitCode; } One of the processes I'm calling depends on an environment variable that I'd rather not require my users to set. Is there any way to modify the environment variables that get sent to the external process? Ideally I'd be able to make them visible only to the process that's running, but if I have to programmatically set them system-wide, I'll settle for that (but, would UAC force me to run as administrator to do that?) ProcessStartInfo.EnvironmentVariables is read only, so a lot of help that is...

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  • Pass variable by Post method from JQuery UI Autocomplete to PHP page

    - by Shahriar N Khondokar
    I have two JQuery UI autocomplete input fields. When an option is selected in the first one, the value of the selection will be used as condition for a database query that will send the source data for the second autocomplete field. My problem is how do I send the value of the first selection to the PHP page via Post method? The code so far is shown below (this code is from a tutorial which used the GET method; but I want to use Post): <script> $("input#divisions").autocomplete ({ //this is the first input source : [ { value: "81", label: "City1" }, { value: "82", label: "City2" }, { value: "83", label: "City3" } ], minLength : 0, select: function(event, ui) { $('#divisions').val(ui.item.label); return false; }, focus: function(event, ui){ $('#divisions').val(ui.item.label); return false; }, change: function(event, ui){ //the tutorial has this value sent by variables in the URL; I want the selection value sent by POST. How can I change this? c_t_v_choices = "c_t_v_choices.php?filter=" + ui.item.value; $("#c_t_v").autocomplete("option", "source", c_t_v_choices); } }).focus (function (event) { $(this).autocomplete ("search", ""); }); $("#c_t_v").autocomplete({ source: "", minLength: 2, select: function(event,ui){ //$('#city').val(ui.item.city); } }); </script> Can anyone please help? Dont hesitate to let me know if you have any questions.

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  • Rails: Pass association object to the View

    - by Fedyashev Nikita
    Model Item belongs_to User. In my controller I have code like this: @items = Item.find(:all) I need to have a corresponding User models for each item in my View templates. it works in controller(but not in View template): @items.each { |item| item.user } But manual looping just to build associations for View template kinda smells. How can I do this not in a creepy way?

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  • Android pass a 2d int array from one activity to another ERROR

    - by user2189001
    ACTIVITY 1: Bundle bundle = new Bundle(); bundle.putSerializable("CustomLevelData", LevelCreator.LCLevelData); Intent i = new Intent(LevelCreatorPopout.this, GameView.class); i.putExtras(bundle); startActivity(i); ACTIVITY 2: LevelData=(int[][]) extras.getSerializable("CustomLevelData"); ERROR: E/AndroidRuntime(16220): FATAL EXCEPTION: main E/AndroidRuntime(16220): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.powerpoint45.maze/com.powerpoint45.maze.GameView}: java.lang.ClassCastException: java.lang.Object[] cannot be cast to int[][] I have searched but found nothing on 2d INT array passing

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  • Save the contents of manipulated div to a variable and pass to php file

    - by Danielle Zarcaro
    I have tried to use AJAX, but nothing I come up with seems to work correctly. I am creating a menu editor. I echo part of a file using php and manipulate it using javascript/jquery/ajax (I found the code for that here: http://www.prodevtips.com/2010/03/07/jquery-drag-and-drop-to-sort-tree/). Now I need to get the edited contents of the div (which has an unordered list in it) I am echoing and save it to a variable so I can write it to the file again. I couldn't get that resource's code to work so I'm trying to come up with another solution. If there is a code I can put into the $("#save").click(function(){ }); part of the javascript file, that would work, but the .post doesn't seem to want to work for me. If there is a way to initiate a php preg_match in an onclick, that would be the easiest. Any help would be greatly appreciated.

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  • PHP pass variable after form is submitted

    - by user342391
    I have a form that posts to process.php. Process.php send all the data to mysql then returns back to the page using: <?php header("Location: /campaigns"); ?> On the page it returns to I want to display a message saying form submitted. Can I post a variable to the Location: /campaigns. And use the variable to display the message (or modal box)? and if so what would be the best way to do it?

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  • c++, when do you need/have to pass data as (*&)

    - by ra170
    I came across people passing data objects as: declaration: DataObject * data = 0; calling it as: SomeMethod( data ); definition of Somethod: void SomeMethod(SomeObject * & object) My obvious question is, when and why do you have to do this (& *)? Is it passing the pointer as reference?

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  • Pass authentication between php and Ruby On Rails application

    - by Li
    Hi, I have a simple Ruby on rails application that I want to integrate with an existing php website. I only want that users who's been authenticated by the php application would have access to my Ruby on Rails application (it should appear to the user as the same website, in the same domain, though it can be a different sub-domain if I chose to) What's the best way to do that? Thanks for the help, Li

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