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  • Arduino variable going blank after the 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; } The sketch starts for example at 1:00am. timet is set to 1:02, at system time 1:02 timet is equal to the system time. My loops looks like this: if (timet == currenttime) { timet = convert(timet) } Whenever I check the value of timet it should equal 1:04, however I get the correct value at the first run after the execution of convert, however every time 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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  • SQL Server - In clause with a declared variable

    - by Melursus
    Let say I got the following : DECLARE @ExcludedList VARCHAR(MAX) SET @ExcludedList = 3 + ', ' + 4 + ' ,' + '22' SELECT * FROM A WHERE Id NOT IN (@ExcludedList) Error : Conversion failed when converting the varchar value ', ' to data type int. I understand why the error is there but I don't know how to solve it...

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  • Storing dynamic fields in Django forms

    - by hekevintran
    Django's form library has a feature of form sets that allow you to process dynamically added forms. For example you would use form sets if your application has a list of bookmarks you could use form sets to process multiple forms that each represent a bookmark. What about if you want to dynamically add a field to a form? An example would be a survey creation page where you can dynamically add an unlimited number of questions. How do you handle this in Django?

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  • Outputting variable values in x86?

    - by Airjoe
    Hello All- I'm working on a homework assignment in x86 and it isn't working as I expect (surprise surprise!). I'd like to be able to output values of variables in x86 functions to ensure that the values are what I expect them to be. Is there a simple way to do this, or is it very complex? For what it's worth, the x86 functions are being used by a C file and compiled with gcc, so if that makes it simpler that is how I'm going about it. Thanks for the help.

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  • Getting $_POST variable from table

    - by Sakamoto Kazuma
    I'm trying to build a sort of resource allocation form. I'd like to be able to print a table from a database, and then allow users to click on each cell that they would like to reserve. Also, being able to drag and select multiple cells. Then send all of this via $_POST to another php script. Problem is, I have no idea where to start. Any suggestions?

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  • Variable popen calls in C

    - by Bushman
    I'm trying to execute MS-DOS DEL commands inside a Win32 C program, and I already know that system and popen can be used for this. However, the problem is that both require string literals (type const char) for the commands, and I need something like the DOS equivalent of dir ~ | grep -P '/\d{7,8}\.exe$/' | rm, which obviously can't use string literals. Is there some other subprocess function in C that allows for char arrays as arguments for process names?

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  • JSF dynamic ui:include

    - by Ray
    In my app I have tutor and student as roles of user. And I decide that main page for both will be the same. But menu will be different for tutors and users. I made to .xhtml page tutorMenu.xhtml and student.xhtml. And want in dependecy from role include menu. For whole page I use layout and just in every page change content "content part" in ui:composition. In menu.xhtml <h:body> <ui:composition> <div class="menu_header"> <h2> <h:outputText value="#{msg['menu.title']}" /> </h2> </div> <div class="menu_content"> <?:if test="#{authenticationBean.user.role.roleId eq '2'}"> <ui:include src="/pages/content/body/student/studentMenu.xhtml"/> </?:if> <?:if test= "#{authenticationBean.user.role.roleId eq '1'}"> <ui:include src="/pages/content/body/tutor/tutorMenu.xhtml" /> </?:if> </div> </ui:composition> I know that using jstl my be not better solution but I can't find other. What is the best decision of my problem?

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  • setting a timeout for an InputStreamreader variable

    - by Noona
    I have a server running that accepts connections made through client sockets, I need to read the input from this client socket, now suppose the client opened a connection to my server without sending anything through the server's socket outputstream, in this case, while my server tried to read the input through the client socket's inputstream, an exception will be thrown, but before the exception is thrown i would like a timeout say of 5 sec, how can I do this? currently here's how my code looks like on the server side: try { InputStreamReader clientInputStream = new InputStreamReader(clientSocket.getInputStream()); int c; StringBuffer requestBuffer = new StringBuffer(); while ((c = clientInputStream.read()) != -1) { requestBuffer.append((char) c); if (requestBuffer.toString().endsWith(("\r\n\r\n"))) break; } request = new Request(requestBuffer.toString(), clientSocket); } catch (Exception e) // catch any possible exception in order to keep the thread running { try { if (clientSocket != null) clientSocket.close(); } catch (IOException ex) { ex.printStackTrace(); } System.err.println(e); //e.printStackTrace(); }

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  • When does ref($variable) return 'IO'?

    - by Zaid
    Here's the relevant excerpt from the documentation of the ref function: The value returned depends on the type of thing the reference is a reference to. Builtin types include: SCALAR ARRAY HASH CODE REF GLOB LVALUE FORMAT IO VSTRING Regexp Based on this, I imagined that calling ref on a filehandle would return 'IO'. Surprisingly, it doesn't: use strict; use warnings; open my $fileHandle, '<', 'aValidFile'; close $fileHandle; print ref $fileHandle; # prints 'GLOB', not 'IO' perlref tries to explain why: It isn't possible to create a true reference to an IO handle (filehandle or dirhandle) using the backslash operator. The most you can get is a reference to a typeglob, which is actually a complete symbol table entry [...] However, you can still use type globs and globrefs as though they were IO handles. In what circumstances would ref return 'IO' then?

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  • Printing a string and variable in MIPS

    - by Matt
    Here's the C representation of what I'm trying to do in MIPS assembly: printf ("x=%d\n", x); I know that I can do a syscall to easily print x= and I can also do a syscall to print the int x (which is stored in a register). However, that prints them like this (let's say x is 5): x= 5 How can I make them print on the same line?

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  • Tomcat myfaces dynamic source files

    - by Gerrie
    Hi, I'm going to try and make as much sense as possible here. We are working on a myfaces 2 app in tomcat. On our local dev machines, whenever we want to change one of our xhtml files, we have to stop the server, deploy and then start the server back up. This is cumbersome and makes making small changes to the view tedious. I tried changing the deployed xhtml file in tomcat, but the server only picks up the new change after a restart. Is there any type of config in myfaces or tomcat I can do to force the rebuilding of these source xhtml's every time?

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  • Dynamic dropdown search box

    - by glebm
    Are there any gems that would help me make a search box like the one for tags on stackoverflow? (Rails 2.3.5, required IE7 support and graceful no-script fall-back) P.S.: Do these boxes annoy you or do you think it's a good thing to have one?

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  • Life Scope of Temporary Variable

    - by Yan Cheng CHEOK
    #include <cstdio> #include <string> void fun(const char* c) { printf("--> %s\n", c); } std::string get() { std::string str = "Hello World"; return str; } int main() { const char *cc = get().c_str(); // cc is not valid at this point. As it is pointing to // temporary string internal buffer, and the temporary string // has already been destroyed at this point. fun(cc); // But I am surprise this call will yield valid result. // It seems that the returned temporary string is valid within // scope (...) // What my understanding is, scope means {...} // Is this valid behavior guarantee by C++ standard? Or it depends // on your compiler vendor implementations? fun(get().c_str()); getchar(); } The output is : --> --> Hello World Hello, may I know the correct behavior is guarantee by C++ standard, or it depends on your compiler vendor implementations? I have tested this under VC2008 and VC6. Works fine for both.

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  • PHP form processing - how to capture text from field that has variable Name/ID

    - by user80151
    I have a form that has a field pulled from the database as a dropdown. I need to get the text selected in the dropdown but I don't know in advance what the field ID will be. This is basically just a form that has already been generated. I don't need to pull anything from the database, it's already on this page. All I need to do is get the form information and email it, no writing to the database. I know how to do the _Request for the other fields based on the ID but I'm not sure how to do this one. The ID changes. It can be ID=1, ID-2, etc. I need to do something like: _REQUEST form element where ID is LIKE "ID[*]" or something similar. Any suggestions or links to tutorials? Here are a couple samples of what the dropdown renders on the page: <div class="wrapperAttribsOptions"> <h4 class="optionName back"><label class="attribsSelect" for="attrib- 1">Model</label></h4> <div class="back"> <select name="id[1]" id="attrib-1"> <option value="45">VC3-4C</option> <option value="1">VC3-4PG</option> <option value="3">VC3-4SG</option> <div class="wrapperAttribsOptions"> <h4 class="optionName back"><label class="attribsSelect" for="attrib-14">SPK Model</label></h4> <div class="back"> <select name="id[14]" id="attrib-14"> <option value="43">SPK-4</option> <option value="44">SPK-8</option> </select> TIA

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  • ASP: runat=server for dynamic control

    - by Jan
    In the Page_Load method I create a couple of controls, based on various conditions. I would like to register server side code with those controls. However, for the last part I need to declare my controls as server controls. This is normally done by runat=server, but I don't know how to set this attribute in the C# code. myControl.Attributes.Add("runat", "server") does not do the trick. This one works, meaning that the "test" method is called when I click on it: <asp:LinkButton ID="LinkButton1" runat="server" OnClick="test">testtext</asp:LinkButton> This one does not work: LinkButton lb = new LinkButton(); lb.ID = "LinkButton1"; lb.OnClientClick = "test"; lb.Text = "testtext"; lb.Attributes.Add("runat", "server"); I can click on it, and the page is loaded, but the test-method is not called. Any hints?

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  • jquery dialog form with dynamic variables

    - by Patrick
    Hello, Currently I have an html form - which I call with jquery dialog - to insert new records into a table. But I also would like to update existing records with the same form - using jquery dialog. I'm not sure within the dialog how I access these data values - or pass them in as arguments - and hook them up with the form elements...? Anyone has done this before and knows an agile technique to do this? kind regards, Patrick

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  • Flex dynamic form height

    - by Daryl
    I'm not sure if this is possible, is there a way to get the <mx:Form> to set its own height based on the position of an element within it? For example something like this: <mx:Form height="{submitBtn.y + submitBtn.height}"> <mx:FormItem>... </mx:FormItem> <mx:FormItem>... </mx:FormItem> <mx:FormItem>... </mx:FormItem> <mx:FormItem> <s:Button id="submitBtn" label="Submit" /> </mx:FormItem> </mx:Form> where the form height is dynamically set based on submitBtn's y position and its height. I tried using Alert.show to show these values and turned out submitBtn.y = 0 and submitBtn.height = 21. height sounds reasonable, but I know the submitBtn.y can't be 0 since it's below several other Is it possible to set the form height dynamically?

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  • Ruby - print the variable name and then its value

    - by tyndall
    What is the best way to write a function (or something DSLish) that will allow me to write this code in Ruby. How would I construct the function write_pair? username = "tyndall" write_pair username # where write_pair username outputs username: tyndall Is it possible to do? Looking for the most simple way to do this.

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  • Dynamic context menu items

    - by Willem
    I am using Eclipse RCP to build desktop app. When the user invokes a popup menu I'd like to add some items to the menu. Something like a list of "suggested actions" to take for a problem. The pop-up is is on a table and it already has commands on it. What is the right way to implement this?

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  • Set a specific stylesheet based on session variable in javascript

    - by user2371301
    I have an option for a user to select his/her own theme while logged into the system and this theme is set in a MYSQL Database and called each time the user logs in, this is called by: <?php $_SESSION['SESS_THEME_NAME']; ?> Now, I had this working in a PHP file but I need it to work in Javascript instead unfortunately. And I need some help. I looked at the code using the developers tools on Google Chrome and looks like the above code is not resolving within the javascript file. Which makes sense because you can't access session variables within a javascript file (as I found by searching Google.) The code is basically supposed to set the specific stylesheet based on the value extracted from the MYSQL database. So if the database says Default the script needs to tell the webpage to use the default.css file. And so on and so forth. My attempt at writing this is as follows: var themName="<?php $_SESSION['SESS_THEME_NAME']; ?>"; if (themeName == "Default") { document.write("<link re='stylesheet' type='text/css' href='css/mws-theme.css'>"); }; if (themeName == "Army") { document.write("<link rel='stylesheet' type='text/css' href='css/mws-theme-army.css'>"); }; if (themeName == "Rocky Mountains") { document.write("<link rel='stylesheet' type='text/css' href='css/mws-theme-rocky.css'>"); }; if (themeName == "Chinese Temple") { document.write("<link rel='stylesheet' type='text/css' href='css/mws-theme-chinese.css'>"); }; if (themeName == "Boutique") { document.write("<link rel='stylesheet' type='text/css' href='css/mws-theme-boutique.css'>"); }; if (themeName == "Toxic") { document.write("<link rel='stylesheet' type='text/css' href='css/mws-theme-toxic.css'>"); }; if (themeName == "Aquamarine") { document.write("<link rel='stylesheet' type='text/css' href='css/mws-theme-aquamarine.css'>"); }; Any help once so ever would be awesome and much much appreciated! I am reaching a deadline :/

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  • Combining Variable Numbers of Lists w/ LINQ

    - by Anthony Compton
    I have a list (List) of objects. Each of those objects contains a list (List) of strings describing them. I'm needing to create a dropdown containing all of the distinct strings used to describe the objects (Cards). To do this, I need a list of distinct strings used. Any idea how/if this can be done with LINQ?

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  • LINQ VB.NET variable not found when looping through grouped query

    - by Ed Sneller
    I'm trying to do the following LINQ grouping, which works in the debugger (the results are populated in the GroupedOrders object. But VS 2008 gives me the following error at design time... Name 'x' is not declared Dim GroupedOrders = (From m In thisConsultant.orders _ Group m By Key = m.commCode Into Group _ Select commCode = Key, orders = Group) For Each x In GroupedOrders Next VS 2008 gives me the following error,

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