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• Is it possible to replace the system open file dialog?

  - by Edwin

  I want to replace the standard system open file dialog with the one I wrote, that means no matter within which programs you are opening a file, my dialog will be shown instead of the standard one, is this possible? It seems that that there is no such API provided to accomplish this, is it possible to use some hooking technique, but this has to be reliable and not to be treated as spyware by anti-virus tools? any other options? If this is not possible, is it possible to add to the spacebar or toolbar in the standard open file dialog a button which invokes my dialog, which allow users select a file and in turn returns the path of the selected file to the "File name" input box of the standard dialog? Any hits, links and code examples will be appreciated.

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• how to hide table columns in jQuery?

  - by understack

  I've a table with lots of columns. I want to give users the option to select columns to be shown in table. These options would be checkboxes along with the column names. So how can I hide/unhide table columns based on checkboxes? Would hiding (using .hide()) each td in each row work? May be I can assign checkbox value to the location of column in table. So first checkbox means first column and so on. And then recursively hide that 'numbered' td in each row. Would that work?

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• Assigning to struct in different class

  - by 4thSpace

  I have a struct in ClassA and want to assign it to the same struct in ClassB (the two structs are the same with different names). ClassA and ClassB are view controllers. Basically, I need to pass this struct to another class. However, structs don't seem to be exposed as members, which means I can't access them. Here is ClassA's struct declared in its header file: typedef struct { NSString *startDate; NSString *endDate; NSString *classId; } selectedItemsClassAStruct; selectedItemsClassAStruct selectedItemsClassA; and the same for ClassB (just with ClassA text replaced) It doesn't appear in code hints for ClassB. I see this error if I try to access it: request for member 'selectedItemsClassBStruct' in something not a structure or union How should it be done?

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• Get clientid in user control from external javascript file

  - by Giorgi

  Hello, I am developing a user control (ascx) in ASP.NET which uses javascript for manipulating controls. Currently the javascript code is inlined and uses <%= somecontrol.ClientID %> to get the control it needs. I want to put the javascript file in external file but from external file I cannot use the above syntax for retrieving controls. I have read about possible solutions in this and this answers but the problem is that the user control can be placed multiple times on page. This means that the Controls array (mentioned in the answers) will be rendered several times with different items. As a result the script will not be able to retrieve the id it needs. If I put <%= ClientId %> in the name of array that holds items then I will have the same problem as I am trying to solve. Any ideas?

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• HABTM and belongsTo at the same join, cakePhp

  - by Cynthia

  Hello everyone. I have a model Fix with a relationship HABTM Device model. Device model has a belongsTo to Device_type model, like this, for only getting the device type name: var $belongsTo = array('Device_type'=>array('fields'=>'name')); So, I need every Fix, its devices and its Device_types. When I make a Fix->find('all', array('recursive' => 2)) I expect to get every Device related to Fix (this works ok) and ALSO for every device, its Device_type.name (which is not working). This is what I get instead for every Device in the result (an empty array): ["Device_type"]=> array(0) { } Besides this, when I make this query for testing: Fix->Device->find('all'), it returns the current Device_type.names for every device related to fixes, which means models are related propertly. Any help? Thanks.

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• Vimeo - videos.getChannels

  - by brad

  How can I efficiently retrieve a list of channels that a Vimeo video is listed in from the Advanced Vimeo API? The Advanced Vimeo API provides the methods channels.addVideo and channels.removeVideo for managing the channels a video belongs to. Also, the channels.getVideos method is provided for retrieving the list of videos belonging to a channel. However, there is no videos.getChannels method. This means that in order to find all the channels a video is included in one would need to call channels.getVideos (possibly more than once if the channel has more than 50 videos) for each channel of interest. This seems terribly inefficient.

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• Simple reduction (NP completeness)

  - by Allen

  hey guys I'm looking for a means to prove that the bicriteria shortest path problem is np complete. That is, given a graph with lengths and weights, I need to know if a there exists a path in the graph from s to t with total length <= L and weight <= W. I know that i must take an NP complete problem and reduce it to this one. We have at our disposal the following problems to choose from: 3-SAT, independent set, vertex cover, hamiltonian cycle, and 3-dimensional matching. Any ideas on which may be viable? thanks

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• ASP.NET MVC Populating a DropDownList with a value from the view

  - by lomaxx

  In my controller I have this: ViewData["maskList"] = new SelectList(equipmentRepository.GetMasks(), "Id", "DisplayName"); and then I bind it to my view using <div each="var nfa in mfa.NasalFittingAssessment"> ${Html.DropDownList("NasalMaskTypeId", ViewData["maskList"] as IEnumerable<System.Web.Mvc.SelectListItem>, new { class = "ddl" })} </div> Note that I'm using the spark view engine so this DropDownList is getting rendered to the page via a loop. This means that the selected value of the dropdown list will change on each iteration of the loop. What I can't work out is how to pass in the value I want to set the DropDownList to based on the value that is currently being rendered to the screen.

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• Syncing an iPod or iPhone with Cocoa

  - by Koning Baard XIV

  I'm creating an iTunes clone in Cocoa (don't ask why, it's not evil) and I want to be able to sync my iPod with it. This means: music, photos, videos and podcasts. I couldn't really find anything, since Google only shows articles about iPod touch and iPhone programming, but I'm actually creating a desktop application for Mac OS X, and I also want to be able to sync click-wheel iPods. Is there an API or should I read and write directly to the USB port? Can anyone help me? Thanks

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• How do I adjust overall width of rdlc report when some columns are hidden?

  - by user115487

  I have a customizable rdlc report where the user can choose which columns to show. All the columns are included in the report designer, and I use parameters to hide/show columns based on the user's choice. The report renders correctly, and only shows the selected columns, HOWEVER, the overall width of the report is the same as if all the columns were visible. This means that the report can have a huge empty area to the right of the selected columns, which looks very silly. So my question: Is there a way to adjust the report width dynamically at runtime to avoid a large silly empty area in the report? I attempted to do this in the designer by assigning a parameter to the width of the report body....but that was not allowed. The width cannot be an expression of any kind in the designer, only an actual value is allowed. Any suggestions?

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• How do I give MacPorts privileges?

  - by cojadate

  I tried to install PostgreSQL server development libraries using MacPorts and got the following: Warning: MacPorts running without privileges. You may be unable to complete certain actions (e.g. install). ---> Computing dependencies for postgresql-server-devel ---> Dependencies to be installed: postgresql-devel ---> Building postgresql-devel Error: Target org.macports.build returned: shell command failed Error: The following dependencies failed to build: postgresql-devel Error: Status 1 encountered during processing. To report a bug, see <http://guide.macports.org/#project.tickets> So I guess that means I need to running MacPorts with privileges and try again. Unfortunately I've no idea how to give MacPorts privileges. I'm running OS X 10.6.3

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• How *restrict / *__restrict__ works in C / C++?

  - by Moraru Lilian

  Here is some code I wrote: #include <iostream> using namespace std; int main(void) { int i = 7; int *__restrict__ a = &i; *a = 5; int *b = &i, *c = &i; *b = 8; *c = 9; cout << **&a << endl; //*a return 0; } From what I've read, if I do " *a = 5 ", it changes the value of the memory he, "a", is pointing to, after that the memory to which he is pointing to should not be modified by anyone else except "a", which means that these program is wrong because "b" and "c" modify it after that. Or, even if "b" modifies "i" first, after that only "a" should have access to that memory( "i" ). Am I getting it correctly?

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• Accorian menu is not working properly

  - by Zerotoinfinite

  Hi, I am using accordin menu in my site, placed in Master Page, It has 4 pane, each pane have multiple links. it was working fine previously. But suddenly it is displaying this error message There is no source code available for the current location. It's is asking for show assembly. When I clicked on that I got a stopage at the stack 0000001a mov eax,dword ptr [ebp-0Ch] -- I am really not sure what does it means. Also, there are several links in accordin menu, after clicking on anyone of the link I am not able to click the other link, might be because of the above reason. Please help

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• Programmatic resource monitoring per process in Linux

  - by tuxx

  Hi, I want to know if there is an efficient solution to monitor a process resource consumption (cpu, memory, network bandwidth) in Linux. I want to write a daemon in C++ that does this monitoring for some given PIDs. From what I know, the classic solution is to periodically read the information from /proc, but this doesn't seem the most efficient way (it involves many system calls). For example to monitor the memory usage every second for 50 processes, I have to open, read and close 50 files (that means 150 system calls) every second from /proc. Not to mention the parsing involved when reading these files. Another problem is the network bandwidth consumption: this cannot be easily computed for each process I want to monitor. The solution adopted by NetHogs involves a pretty high overhead in my opinion: it captures and analyzes every packet using libpcap, then for each packet the local port is determined and searched in /proc to find the corresponding process. Do you know if there are more efficient alternatives to these methods presented or any libraries that deal with this problems?

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• How can I calculate data for a boxplot (quartiles, median) in a Ralis app on Heroku? ( Heroku uses P

  - by hadees

  I'm trying to calculate the data needed to generate a box plot which means I need to figure out the 1st and 3rd Quartiles along with the median. I have found some solutions for doing it in Postgresql however they seem to depend on either PL/Python or PL/R which it seems like Heroku does not have either enabled for their postgresql databases. In fact I ran "select lanname from pg_language;" and only got back "internal". I also found some code to do it in pure ruby but that seems somewhat inefficient to me. I'm rather new to Box Plots, Postgresql, and Ruby on Rails so I'm open to suggestions on how I should handle this. There is a possibility to have a lot of data which is why I'm concerned with performance however if the solution ends up being too complex I may just do it in ruby and if my application gets big enough to warrant it get my own Postgresql I can host somewhere else. *note: since I was only able to post one link, cause I'm new, I decided to share a pastie with some relevant information

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• Fixing warning from git

  - by japancheese

  I've been doing a workflow of making a git repository on a remote central repository, cloning that repo on my local dev machine, doing some work, and then pushing the changes back to the same repo on the remote server. However, and I believe this was after an update I did to git recently, after pushing up a change, I'm getting the following warning: Counting objects: 2724, done. Delta compression using up to 2 threads. Compressing objects: 100% (2666/2666), done. Writing objects: 100% (2723/2723), 5.90 MiB | 313 KiB/s, done. Total 2723 (delta 219), reused 0 (delta 0) warning: updating the currently checked out branch; this may cause confusion, as the index and working tree do not reflect changes that are now in HEAD. Can someone explain to me exactly what this warning means, and what I'm doing wrong in my workflow to not receive this warning?

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• What is a programmer's life like?

  - by Zee JollyRoger

  Imagine like an 8-hour long video of any "typical/average" programming job. What is it like? Before I get myself involved in that path, what can I expect? I am interested in gathering first-hand information and accounts of the typical life of a programmer. My goal is to grasp the fundamental concepts of working in the professional field of programming. I just want to "see" into what it is/means to come to an entry-level programming job and program. See what kind of skills, mentality, expectations, and such are required.

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• What do the different columns (of letters) mean for the svn merge output?

  - by James

  The output of SVN merge has 4 columns of letters listed before the file name. I understand the meaning of the letters (mostly) but I can't find any information on the meanings of the columns and so only have a vague understanding based on context. Can anyone point me to the documentation on this? Based on context I've been able to infer that column: Is about text changes to a file Seems to be related to use of the svn ignore command on a folder (or maybe it's just properties of the file?) I've never seen a letter in the third column and hence I have no idea what it means. Might be tree conflicts? This is the one I'm mostly worried about because I don't know how to handle it yet.

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• Noob Rails ? about learning Rails

  - by user271916

  Hi All I have been programming for a while and for the past 3 or 4 months have been learning ruby. I am not an expert by any means but I believe I have the basics down. I decided to start learning RoR and bought the "Agile Web Development with Rails 3rd Edition" and have been dutifully going through the chapters one by one. Currently I am in chapter 8 and have had no problems so far. My question is I know I have learned several things so far and I know that I am starting to get a sense of the Rails framework I have this fear that I am just not learning as much as I should. Some things I get and understand the interconnections while I feel on other things I am just going through the motions and don't fully comprehend the total interconnectivity. Now, there is still a large amount of the book for me to complete. I guess I am just wondering if I complete this book what should I expect to be able to accomplish on my own and what should be my next steps. Thanks

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• Performance Counters Registry validation

  - by anchandra

  I have a C# application that adds some performance counters when it starts up. But if the registry HKEY_LOCAL_MACHINE-SOFTWARE-Microsoft-Windows NT-CurrentVersion-Perflib is corrupted (missing or invalid data), the operation of checking the existence of the performance counters (PerformanceCounterCategory.Exists(category) takes a really long time (around 30 secs) before finally throwing exception (InvalidOperation: Category does not exist). My question is how can i verify the validity of the registry before trying to add the performance counters (and what validity means) or if there is a way i can timeout the perf counter operations, so that it doesn't take 30 seconds to get an exception.

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• How to center align background image in JPanel

  - by Jaguar

  I wanted to add background image to my JFrame. Background image means I can later add Components on the JFrame or JPanel Although I coudn't find how to add background image to a JFrame, I found out how to add background image to a JPanel from here: How to set background image in Java? This solved my problem, but now since my JFrame is resizable I want to keep the image in center. The code I found uses this method public void paintComponent(Graphics g) { //Draw the previously loaded image to Component. g.drawImage(img, 0, 0, null); //Draw image } Can anyone say how to align the image to center of the JPanel. As g.drawImage(img, 0, 0, null); provides x=0 and y=0 Also if there is a method to add background image to a JFrame then I would like to know. Thanks.

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• How to convert a unicode charactor array back to unicode sequence in C++

  - by eddyxd

  My problem is how to convert a c/c++ string/chractor array to another string contain the unicode(UTF-16) escape sequence of original one for example, I want to find a function F(char *ch) could do following function. char a[10] = "\u5f53"; printf("a = %s\n",a); char b[10]; b = F(a); //<- F is the function I wanted printf("b = %s\n",b); -------- console will show ------- a = ? b = \u5f53 Anyone has any Idea@@?~ thanks!! ps: I tried to guess \u5f35 means the value store in a, but it is not indeed the value of a[0] = -79 , a[1] = 105 ... So I don't know how to convert it back to the sequence of unicode.... Please give me a hane~ : )

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• iPhone OSStatus -25308 or errSecInteractionNotAllowed SFHFKeychainUtils

  - by George Octavio

  Hi again guys. I'm trying to access my iPhone's device keychain. I want to access in order to create a simple user-password value intended for a log in function. This is the code I'm using from SFHFKeychainUtils NSArray *keys = [[[NSArray alloc] initWithObjects: (NSString *) kSecClass, kSecAttrService, kSecAttrLabel, kSecAttrAccount, kSecValueData, nil] autorelease]; NSArray *objects = [[[NSArray alloc] initWithObjects: (NSString *) kSecClassGenericPassword, serviceName, serviceName, @"TestUser", @"TestPass", nil] autorelease]; NSDictionary *query = [[[NSDictionary alloc] initWithObjects: objects forKeys: keys] autorelease]; OSStatus status = SecItemAdd((CFDictionaryRef) query, NULL); } else if (status != noErr) { //Output to screen with error code goes here return NO; } return YES; } The error code I'm getting is OSStatus-25308 or errSecInteractionNotAllowed. I'm guessing this means I don't actually have access to my iPhone's keychain? Is there a way to allow access? Thanks for your time.

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• Talking to an Authentication Server

  - by Kyle Terry

  I'm building my startup and I'm thinking ahead for shared use of services. So far I want to allow people who have a user account on one app to be able to use the same user account on another app. This means I will have to build an authentication server. I would like some opinions on how to allow an app to talk to the authentication server. Should I use curl? Should I use Python's http libs? All the code will be in Python. All it's going to do is ask the authentication server if the person is allowed to use that app and the auth server will return a JSON user object. All authorization (roles and resources) will be app independent, so this app will not have to handle that. Sorry if this seems a bit newbish; this is the first time I have separated authentication from the actual application.

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• ASP.NET site freezing up, showing odd text at top of the page while loading, on one server

  - by MGOwen

  I have various servers (dev, 2 x test, 2 x prod) running the same asp.net site. The test and prod servers are in load-balanced pairs. One of these pairs is exhibiting some kind of (super) slowdown or freezing every other page load or so. Sometimes a line of text appears at the very top of the page which looks something like: 00 OK Date: Thu, 01 Apr 2010 01:50:09 GMT Server: Microsoft-IIS/6.0 X-Powered_By: ASP.NET X-AspNet-Version:2.0.50727 Cache-Control:private Content-Type:text/html; charset=ut (the beginning and end are "cut off".) Has anyone seen anything like this before? Any idea what it means or what's causing it?

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