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  • Iterating through struct fieldnames in MATLAB.

    - by Noio
    My question is easily summarized as: "Why does the following not work?" teststruct = struct('a',3,'b',5,'c',9) fields = fieldnames(teststruct) for i=1:numel(fns) fns(i) teststruct.(fns(i)) end output: ans = 'a' ??? Argument to dynamic structure reference must evaluate to a valid field name. Especially since teststruct.('a') does work. And fns(i) prints out ans = 'a'. I can't get my head around it.

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  • Get spiral index from location

    - by ricick
    I'm using Alberto Santini's solution to this question to get a spiral grid reference based on an items index Algorithm for iterating over an outward spiral on a discrete 2D grid from the origin It's not the accepted solution, but it's the best for my needs as it avoids using a loop. It's working well, but what I want now is to do the inverse. Based on a known x and y coordinate return the index of a location. This is as a precursor to returning the items surrounding a given location.

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  • Changing website favicon dynamically

    - by rwmnau
    I have a web application that's branded according to the user that's currently logged in. I'd like to change the favicon of the page to be the logo of the private label, but I'm unable to find any code or any examples of how to do this. Has anybody successfully done this before? I'm picturing having a dozen icons in a folder, and the reference to which favicon.ico file to use is just generated dynamically along with the HTML page. Thoughts?

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  • What happened to the CSS Checker tool?

    - by Kyle Sevenoaks
    I used it before, and was reminded of it when someone asked about a tool to strip unsused CSS from a stylsheet. I went back to the link, but it's gone, what happened to it? Is it gone forever or does anyone know of a backup? Or a similar tool that can still check your CSS against the HTML and strip orphan CSS. Thanks. Link (to broken site for reference).

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  • Does the iPhone 3G/3Gs camera put metadata in its images? (and how do you get it?)

    - by Ben Collins
    I've been trying to figure how whether the iPhone (either 3G or 3Gs) camera puts metadata into it's images. Anecdotally, it appears that it does (e.g., I've seen images posted on the web that included a bunch of metadata), but I can't find reference to it anywhere in the SDK documentation. So....does anyone have a definitive answer? Also, if there is metadata, how do I get at it?

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  • Exposing a C++ API to C#

    - by Siyfion
    So what I have is a C++ API contained within a *.dll and I want to use a C# application to call methods within the API. So far I have created a C++ / CLR project that includes the native C++ API and managed to create a "bridge" class that looks a bit like the following: ManagedBridge.h namespace ManagedAPIWrapper { public ref class Bridge { public: int bridge_test(void); int bridge_test2(api_struct* temp); } } ManagedBridge.cpp int Bridge::bridge_test(void) { return test(); } int Bridge::bridge_test2(api_struct* temp) { return test2(temp); } I also have a C# application that has a reference to the C++/CLR "Bridge.dll" and then uses the methods contained within. I have a number of problems with this: I can't figure out how to call bridge_test2 within the C# program, as it has no knowledge of what a api_struct actually is. I know that I need to marshal the object somewhere, but do I do it in the C# program or the C++/CLR bridge? This seems like a very long-winded way of exposing all of the methods in the API, is there not an easier way that I'm missing out? (That doesn't use P/Invoke!)

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  • sending address of a variable declared on the stack?

    - by kobac
    I have a doubt concerning declaring variables, their scope, and if their address could be sent to other functions even if they are declared on the stack? class A{ AA a; void f1(){ B b; aa.f2(&b); } }; class AA{ B* mb; f2(B* b){ mb = b; //... } }; Afterwards, I use my AA::mb pointer in the code. So things I would like to know are following. When the program exits A::f1() function, b variable since declared as a local variable and placed on the stack, can't be used anymore afterwards. What happens with the validity of the AA::mb pointer? It contains the address of the local variable which could not be available anymore, so the pointer isn't valid anymore? If B class is a std::<vector>, and AA::mb is not a pointer anymore to that vector, but a vector collection itself for example. I would like to avoid copying all of it's contents in AA::f2() to a member AA::mb in line mb = b. Which solution would you recommend since I can't assign a pointer to it, because it'll be destroyed when the program exits AA::f2()

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  • how can i change texts in the dynamic textFields in SimpleButton instance (button symbol)?

    - by sasi
    hi every one, this may be a basic thing, but i couldn't find an answer by serching internet. I have created a simple button - Istance name = "btnsample" and there are two layers layer 0- button design with rollovers - layer 1- dynamic text field - instance name = "txtbtnlabel" btnsample.txtbtnlabel.text = "new button label; but it's giving followin error :-119:Access of possible undefined propety txtbtnlabel through a reference with static type flash.display:simpleButton. how to solve this problem?

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  • Extended MAPI: How to get the entry ID of messages moved by CopyMessages

    - by marijne
    I have found that if I move a message using IMAPIFolder::CopyMessages (using the MESSAGE_MOVE flag) the message gets a new entry ID. However I do not see any reliable way of getting the entry ID of the message in its new location, or otherwise getting a reference to it. The best suggestion I have had so far involves tagging the message with the old custom property before moving, and then doing a search afterwards, but I was wondering if there is a less convoluted solution.

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  • how to leave a gap in select list from left

    - by Mayur
    Hi All, I m trying to leave a gap from left in select list, but its getting problem in firefox and safari please give me source code or any reference link from where i can work... code which i use : <select style="padding:10px"> <option>Male</option> <option>female</option> <option>other</option> </select> Thanks

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  • How can I call a function in a parent movieclip from an externally-loaded child?

    - by Doug Wolfgram
    I have a swf file that is my 'shell' program that contains many functions. This shell program loads child movies. In the root timeline of the child movie, I have the following code: function putresponse(q,r) { trace (r); _root.debug(r); } _root.debug("foo"); Debug is a function that writes some text to the screen. When I run this locally, the putresponse function gets called and the trace happens. When I run it remotely (inside the shell) the first debug happens immediately on load (as you'd expect) but then later when putresponse is called, the debug(r) is not executed. The external clip is at the same url as the shell so I don't think it is a security issue. Also, as I said, the debug("foo") works fine. This one really has me perplexed. Can anyone shed some light as to why I can't call the debug from _root when called from a function rather than on the first-level timeline? EDIT: The call to putresponse is coming form two layers deep in local (within the child MC) MCs. The actual call is: _parent._parent.putrepsonse(q,r);

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  • Will this be garbage collected in JVM?

    - by stjowa
    I am running the following code every two minutes via a Timer: object = new Object(this); Potentially, this is a lot of objects being created and a lot of objects being overwritten. Do the overwritten objects get garbage collected, even with a reference to itself being used in the newly created object? I am using JDK 1.6.0_13. Thanks for the help.

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  • c Pointer to pointer, or passing list to functions

    - by user361808
    Hi, I am new to c programming. Could anyone please tell me what's wrong with the following program? typedef struct Person_s { int age; char name[40]; } Person_t; int process_list(int *countReturned, Person_t **p_list) { Person_t *rowPtr=0; //the actual program will fethc data from DB int count =1; if(!((*p_list) = (Person_t *) malloc(sizeof(Person_t)))) { return -1; } rowPtr = *p_list; rowPtr[count-1].age =19; strcpy(rowPtr[count-1].name,"Prince Dastan"); *countReturned = count; return 0; } int main(int argc, char *argv[]) { Person_t *tmpPerson=0; Person_t **p_list=0; int *count=0; int i; process_list(count,p_list); tmpPerson = *p_list; for(i=0; i< *count; i++) { printf("Name: %s , age: %d\n",tmpPerson->name,tmpPerson->age); tmpPerson++; } //free(tmpPerson); return 0; }

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  • Error 401 when login twitter by twitter4j

    - by user1060362
    I am doing an app android to login and upload photo to twitter. I used twitter4j to login and reference some tutorial..I extract that consumer key and consumer secret key are filled correct.But I encountered an error"401: Authentication credential...".Have a solution to fix it is sync time my server with time twitter server..But I don't understand what sync time here and how to extractly.. Can you help me.

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  • Scan file contents into an array of a structure.

    - by ZaZu
    Hello, I have a structure in my program that contains a particular array. I want to scan a random file with numbers and put the contents into that array. This is my code : ( NOTE : This is a sample from a bigger program, so I need the structure and arrays as declared ) The contents of the file are basically : 5 4 3 2 5 3 4 2 #include<stdio.h> #define first 500 #define sec 500 struct trial{ int f; int r; float what[first][sec]; }; int trialtest(trial *test); main(){ trial test; trialtest(&test); } int trialtest(trial *test){ int z,x,i; FILE *fin; fin=fopen("randomfile.txt","r"); for(i=0;i<5;i++){ fscanf(fin,"%5.2f\t",(*test).what[z][x]); } fclose(fin); return 0; } But the problem is, whenever this I run this code, I get this error : (25) : warning 508 - Data of type 'double' supplied where a pointer is required I tried adding do{ for(i=0;i<5;i++){ q=fscanf(fin,"%5.2f\t",(*test).what[z][x]); } }while(q!=EOF); But that didnt work either, it gives the same error. Does anyone have a solution to this problem ?

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  • callback pattern

    - by robUK
    Hello, gcc 4.4.3 c89 I am creating a client server application and I will need to implement some callback functions. However, I am not too experienced in callbacks. And I am wondering if anyone knowns some good reference material to follow when designing callbacks. Is there any design patterns that are used for c. I did look at some patterns but there where all c++. Many thanks for any suggestions,

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  • when i moved from FW3.5 to FW2.0 i got error

    - by Gold
    hi i have buield my project on VS2008 under FrameWork 3.5 now i need to move to FrameWork 2.0 when i done this, i got this error: Error 1 The type or namespace name 'TypedTableBase' does not exist in the namespace 'System.Data' (are you missing an assembly reference?) C:\Documents and Settings\xxx\Desktop\demo2005\demo\MyDB.Designer.cs 391 68 demo in this line: public partial class DO1TblDataTable : global::System.Data.TypedTableBase<DO1TblRow> { i think that it something with the crystal-report thank's in advance

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  • How can I fix my window focus problem?

    - by Ben313
    I have a very frustrating bug in an application I am working on. The routine is supposed to do something in one window, and then return focus to the other at the end of the method, but when I started to use a large data set the other day, the focus stopped returning at the end. I stepped through the code one line at a time, and the errors stopped. so, i figure its a timing issue of some kind. I trace through until i find what i suspect is the culprit. A call to ShellExecute(...), that terminates an image editor i use. (http://msdn.microsoft.com/en-us/library/bb762153(VS.85).aspx) Now, if I step past this call, and then continue to run the program, everything works fine, but if I just run past this line, the error occurs. how can this be? I have a call to SetFocus() at the very end of this method. shouldnt the program hit this no matter what? This is all so very frustrating...

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  • list box asp.net selected problem

    - by lodun
    .When i choose item from "kategorije" new items loads to me in SUB_kategorije, but when i choose item from SUB_kategorije and when i click on button it shows me this error: Object reference not set to an instance of an object. Line 101: kom.Parameters.Add("@podkategorija", SqlDbType.Text).Value = SUB_kategorije.SelectedItem.ToString(); This is my source... dod_pit.ascx dod_pit.ascx.cs

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  • .htaccess redirect noticably increasing load time

    - by GTCrais
    I set up a SEF link via .htaccess RewriteRule to one of the articles on my website just to see how that works, and it does work but it considerably increases the load time of that particular page. On average the articles (including the one I'm talking about, when not using the rewrite rule) load in about 1.3 seconds. With the rewrite rule, the load time is 3.3 seconds on average until the page displays, and the loader thingy in the firefox tab keeps spinning for another 2 seconds. I have WAMP setup on my computer, and the website is being accessed through no-ip.com. Here is the .htaccess config (very simple, as you can see): Options +FollowSymLinks RewriteEngine On RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^o-sw-liji /NewSWL/o-nama.php?body=o-sw-liji In httpd.conf I have this (somewhere I read this might affect the load time for some reason - searching for files through all the directories or something, I don't remember exactly what I read): <Directory /> Options None AllowOverride None Order deny,allow Deny from all </Directory> DocumentRoot "Z:/Program Files (x86)/wamp/www/" <Directory "Z:/Program Files (x86)/wamp/www/"> Options None AllowOverride All Order allow,deny Allow from all </Directory> Any ideas why .htaccess redirect increases the load time by so much? UPDATE: so I put a session based counter in the "o-nama.php" script. Apparently when I access the web via the 'normal' link i.e. 'o-nama.php?body=o-sw-liji', the counter increases by one, as it should - it's one page load. But when the page is accessed through the redirected link, i.e. 'o-nama/o-sharewood-liji' the counter increases by 6-8, which naturally makes the load time a lot longer, since it's loading the same page for 6-8 times. I have no idea why this is happening. Any help is appreciated.

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