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• Storing script files outside web root

  - by memilanuk

  I've seen recommendations to store some or all php include files some place other than in the web document root directory (username/public_html in my case) for the specific reason of protecting php files with sensitive information (like database connection and login info) in the event that the web server hiccups and stops protecting php files and they become 'visible' to outsiders who know where to look. It seems somewhat paranoid to me, but I'm guessing people have gotten burned badly on this before so I'm willing to go along. The suggestion usually takes the form of having the include files in something like '../include_files/' so its not directly in the document root and not directly accessible to outsiders through the web server. My question is this: is there a significant difference in security between that way and just putting your 'include_files' directory under the document root and sticking an .htaccess file in there (with the appropriate entries)? Would putting an .htaccess file in '../include_files/' make any significant improvement there? TIA, Monte

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• Thread vs ThreadPool - .Net 2.0

  - by NLV

  Hello I'm not able to understand the difference between Thread vs ThreadPool. Consider i've to manipulate 50,000 records using threads. In case of threads i need to either predefine no of threads or no of records per threads. Either of them has to be constant. In case of threadpool we dont need to set any of them theoretically. But practically we need to assign the number of records per thread, because the no of threads may grow extremely large if the input no of records is huge. Any insights on this?

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• Are all the system's floating points operations the same?

  - by Jj

  We're making this web app in PHP and when working in the reports we have Excel files to compare our results to make sure our coding is doing the right operations. Now we're running into some differences due floating point arithmetics. We're doing the same divisions and multiplications and running into slightly different numbers, that add up to a notable difference. My question is if Excel is delegating it's floating point arithmetic to the CPU and PHP is also relying in the CPU for it's operations. Or does each application implements its own set of math algorithms?

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• Auto-Implemented Properties c#

  - by user311130

  Hi all, could someone explain me what's the idea behind using Auto-Implemented Properties c#? public class Customer { public int ID { get; set; } public string Name { get; set; } } I get the motivation to use properties for private field, so we can determine how one can access a private field. But here - it's just like defining the field to be public from the first place. no? Is there a difference between defining a field to be "public const" or define it to have a get-only property ? Thanks Elad

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• What does the Facebook Ads API link_click metric indicate in adcampaignstats

  - by Michael Baird

  I would love to get a definitive answer or a glossary that defines the data returned from the Facebook ads api adcampaignstats. Specifically the difference between the actions and inline_actions. Below is the result for a dark post, and I like to know what the "link_click" metric in actions and inline_actions actually counts. i.e. Does this tell me that in total the campaign had 342 links clicked, or does "link_click" in "actions" and "inline_actions" indicate something else? act_{ad_account_id}/adcampaignstats?campaign_ids=[123456] { "is_completed": false, "social_unique_clicks": 0, "topline_id": 0, "unique_impressions": 0, "start_time": null, "campaign_id": 123456, "actions": { "offsite_conversion.registration": 14, "post_like": 2, "like": 5, "photo_view": 1, "link_click": 180 }, "clicks": 301, "inline_actions": { "comment": 0, "video_play": 0, "title_clicks": 0, "like": 10, "rsvp_maybe": 0, "post_like": 13, "photo_view": 0, "rsvp_yes": 0, "link_click": 162, "question_vote": 0 }, }

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• Microsoft _stprintf warning

  - by mnh

  Why I get the following warning for the following code :) Code: _stprintf(m_szFileNamePath,_T("%s"),strFileName); warning C4996: '_swprintf': swprintf has been changed to conform with the ISO C standard, adding an extra character count parameter. To use traditional Microsoft swprintf, set _CRT_NON_CONFORMING_SWPRINTFS. I know _strprintf is a macro which if _UNICODE is defined will evaluate to _swprintf else it will be sprintf. Now what is this _swprintf. There is a function swprintf, but why is _stprintf evaluating to _swprintf instead of swprintf. What is the difference b/w the _xxx and xxx functions? EDIT: Okay there are two definitions for the UNICODE version of _stprintf, which one is included? The one in tchar.h or strsafe.h?

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• jQuery Event Keypress: Which key was pressed?

  - by BlaM

  With jQuery, how do I find out which key was pressed when I bind to the keypress event? $('#searchbox input').bind('keypress', function(e) {}); I want to trigger an submit when ENTER is pressed. [Update] Even though I found the (or better: one) answer myself, there seems to be some room for variation ;) Is there a difference between keyCode and which - especially if I'm just looking for ENTER, which will never be a unicode key? Do some browsers provide one property and others provide the other one?

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• Rounding floating-point numbers to 4 decimal points

  - by Himadri

  I have two decimal numbers. I want those number to be same upto 4 decimal points without rounding. If numbers are different I want 2nd number to be replaced by 1st. What if condition should I write? Eg, 1. num1 = 0.94618976 num2 = 0.94620239 If we round these numbers upto 4 decimal then we get 0.9462 same number, but I don't want to round these numbers. 2. num1 = 0.94620239 num2 = 0.94639125 The one way I found is take absolute difference of both numbers say diff and then check the value. My problem is of checking the range of diff. Thank You.

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• Passing a variable to jsp when reloading an iframe using javascript

  - by Vee

  In my javascript code I load a jsp page in an iframe and pass some variables like this: htmlData[i++]="<iframe id=\"mapframe\" frameborder=\"0\" style=\"width:330px;height:300px\" src=\"" + "mapURL.jsp" +"&lat=" + AjxStringUtil.urlComponentEncode("33.65") +"&lng=" + AjxStringUtil.urlComponentEncode("-84.42") +"&accord=" + AjxStringUtil.urlComponentEncode(accord) +"\"></iframe>"; Then I have to reload that jsp page after an action, and I do this: accord = ui.newHeader.text(); document.getElementById('mapframe').contentWindow.location.reload(); The reload works except that the "accord" variable is not getting updated. When I call it from the jsp, it still has its original value. How do I pass the new value when reloading the iframe/jsp? It shouldn't make any difference, but I am working with jquery and this is for a Yahoo zimlet. Thanks.

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• Differences between query using LINQ and IQueryable interface directly?

  - by JohnMetta

  Using Entity Framework 4, and given: ObjectSet<Thing> AllThings = Context.CreateObjectSet<Thing>; public IQueryable<Thing> ByNameA(String name) { IQueryable<Thing> query = from o in AllThings where o.Name == name select o; return query; } public IQueryable<Thing> ByNameB(String name) { return AllThings.Where((o) => o.Name == name); } Both return IQueryable< instances, and thus the query doesn't hit the server until something like ToList() is called, right? Is it purely readability that is the difference, or are the using fundamentally different technologies on the back-end?

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• php foreach visible on page

  - by Hintswen

  In my PHP code I have this: $filename = 'data.xml'; $xml = file_get_contents($filename); $data = simplexml_load_string($xml); $variable = ""; foreach ($data->file_info as $record) { $id1 = $record['id1']; $id2 = $record['id2']; } And it works perfectly fine on the web server, but when trying to view it locally (using xampp) I get the following output at the top of my pgae: file_info as $record) { $id1 = $record['id1']; $id2 = $record['id2']; } (followed by another 100 or so lines of PHP) Not sure if it would make a difference, the web server it works on is running linux, and I am trying to view it on windows using xampp)

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• Metro + Jetty + OSGi = pain

  - by mjgp2

  I am trying to swap out Sun's HTTPServer for the much better Jetty server, within an OSGi bundle, running on Equinox. I have tried this: System.setProperty("com.sun.net.httpserver.HttpServerProvider","org.mortbay.jetty.j2se6.JettyHttpServerProvider"); but when endpoint.publish(url) is called, and the server is spawned, it complains of a ClassNotFoundException for org.mortbay.jetty.j2se6.JettyHttpServerProvider. However, the correct jars are in the bundle, and indeed in the Activator I can instantiate a org.mortbay.jetty.j2se6.JettyHttpServerProvider. I think that this is a some kind of classpath issue - the spawned server is in a different classpath maybe? I have tried adding the JARs in at the JDK level, but this doesn't make any difference. Can oanyone shed any light how on earth to get this working? P.S. Maybe hideous System.setProperty calls will vanish from the world one day. Hopefully :)

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• XmlDocument.InnerXml is null, but InnerText is not

  - by Adam Neal

  I'm using XmlDocument and XmlElement to build a simple (but large) XML document that looks something like: <Widgets> <Widget> <Stuff>foo</Stuff> <MoreStuff>bar</MoreStuff>...lots more child nodes </Widget> <Widget>...lots more Widget nodes </Widgets> My problem is that when I'm done building the XML, the XmlDocument.InnerXml is null, but the InnerText still shows all the text of all the child nodes. Has anyone ever seen a problem like this before? What kind of input data would cause these symptoms? I expected the XmlDocument to just throw an exception if it was given bad data. Note: I'm pretty sure this is related to the input data as I can only reproduce it against certain data sets. I also tried escaping the data with SecurityElement.Escape but it made no difference.

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• search engine crawling frequency

  - by Aditya Pratap Singh

  I want to design a search engine for news websites ie. download various article pages from these websites, index the pages, and answer search queries on the index. I want a short pseudocode to find an appropriate crawling frequency -- i do not want to crawl too often because the website may not have changed, and do not want to crawl too infrequently because index would then be out of date. Assume that crawling code looks as follows while(1) { sleep(sleep_interval); // sleep for sleep_interval crawl(website); // crawls the entire website diff = diff(currently_crawled_website, previously_crawled_website); // returns a % value of difference between the latest and previous crawls of the website sleep_interval = infer_sleep_interval(diff, sleep_interval); } looking for a pseudocode for the infer_sleep_interval method: long sleep_interval infer_sleep_interval(int diff_percentage,long previous_sleep_interval) { ... ... ... } i want to design method which adaptively alters the sleeping interval based on the update frequency of the website.

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• How to send/open email attachments from android app?

  - by CSharperWithJava

  I would like to somehow send a file from my app on one android device to my app on another device. This can be done any which way, and I'm open to suggestions if you can tell me how to send over network or something like that. Currently, I'm looking at sending the file as an email attachment, but I haven't found any good documentation on how to do it. I need two things to accomplish this, be able to send my file (stored on sd card or somewhere on device) as an attachment, and have my app recognized by android as the app to open an attachment with the file extention (.lst). Any thoughts? The files will all be fairly small xml text files if that makes a difference.

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• trouble to connect with AppStore in my InAppPurchase application(iPhone)

  - by riteshkumar1905

  There is problem to connect AppStore in my application. All things run fine in Simulator.But When i go with iPhone then AppStore is not connected.. I am also enclose the code which i call on button....... import "BuyController.h" import "InAppPurchaseManager.h" import "SKProducts.h" define kInAppPurchaseProUpgradeProductId @"com.vigyaapan.iWorkOut1" @implementation BuyController (IBAction)buy:(id)sender { /* get the product description (defined in early sections)*/ //[self requestProUpgradeProductData]; { if ([SKPaymentQueue canMakePayments]) { InAppPurchaseManager *Observer = [[InAppPurchaseManager alloc] init]; [[SKPaymentQueue defaultQueue] addTransactionObserver:Observer]; //NSURL *sandboxStoreURL = [[NSURL alloc]initWithString:@"http://sandbox.itunes.apple.com/verifyReceipt"]; //[[UIApplication sharedApplication]openURL:[NSURL URLWithString:@"http://sandbox.itunes.apple.com"]]; [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://phobos.apple.com/WebObjects/ com.vigyaapan.iWorkOut1?id=9820091347&;amp;amp;amp;amp;mt=8"]]; //[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://phobos.apple.com/WebObjects/MZStore.woa/wa/viewSoftware?id=301349397&;amp;amp;amp;amp;mt=8"]]; SKPayment *payment = [SKPayment paymentWithProductIdentifier:@"com.vigyaapan.iWorkOut1"]; [[SKPaymentQueue defaultQueue] addPayment:payment]; } else { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"MyApp" message:@"You are not authorized to purchase from AppStore" delegate:self cancelButtonTitle:@"OK" otherButtonTitles: nil]; [alert show]; [alert release]; } //return [SKPaymentQueue canMakePayments]; } SKPayment *payment = [SKPayment paymentWithProductIdentifier:kInAppPurchaseProUpgradeProductId]; [[SKPaymentQueue defaultQueue] addPayment:payment]; //[self requestProUpgradeProductData]; /* get the product description (defined in early sections)*/ } /* // The designated initializer. Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad. - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle )nibBundleOrNil { if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) { // Custom initialization } return self; }/ // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { [super viewDidLoad]; } // Override to allow orientations other than the default portrait orientation. - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { // Return YES for supported orientations return (interfaceOrientation == UIInterfaceOrientationPortrait); } (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; // Release any cached data, images, etc that aren't in use. } (void)viewDidUnload { // Release any retained subviews of the main view. // e.g. self.myOutlet = nil; } (void)dealloc { [super dealloc]; } @end

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• Please help with iPhone Memory & Images, memory usage crashing app

  - by Andrew Gray

  I have an issue with memory usage relating to images and I've searched the docs and watched the videos from cs193p and the iphone dev site on memory mgmt and performance. I've searched online and posted on forums, but I still can't figure it out. The app uses core data and simply lets the user associate text with a picture and stores the list of items in a table view that lets you add and delete items. Clicking on a row shows the image and related text. that's it. Everything runs fine on the simulator and on the device as well. I ran the analyzer and it looked good, so i then starting looking at performance. I ran leaks and everything looked good. My issue is when running Object Allocations as every time i select a row and the view with the image is shown, the live bytes jumps up a few MB and never goes down and my app eventually crashes due to memory usage. Sorting the live bytes column, i see 2 2.72MB mallocs (5.45Mb total), 14 CFDatas (3.58MB total), 1 2.74MB malloc and everything else is real small. the problem is all the related info in instruments is really technical and all the problem solving examples i've seen are just missing a release and nothing complicated. Instruments shows Core Data as the responsible library for all but one (libsqlite3.dylib the other) with [NSSQLCore _prepareResultsFromResultSet:usingFetchPlan:withMatchingRows:] as the caller for all but one (fetchResultSetReallocCurrentRow the other) and im just not sure how to track down what the problem is. i've looked at the stack traces and opened the last instance of my code and found 2 culprits (below). I havent been able to get any responses at all on this, so if anyone has any tips or pointers, I'd really appreciate it!!!! //this is from view controller that shows the title and image - (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; self.title = item.title; self.itemTitleTextField.text = item.title; if ([item.notes length] == 0) { self.itemNotesTextView.hidden = YES; } else { self.itemNotesTextView.text = item.notes; } //this is the line instruments points to UIImage *image = item.photo.image; itemPhoto.image = image; } - (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath { if (editingStyle == UITableViewCellEditingStyleDelete) { // Delete the managed object for the given index path NSManagedObjectContext *context = [fetchedResultsController managedObjectContext]; [context deleteObject:[fetchedResultsController objectAtIndexPath:indexPath]]; // Save the context. NSError *error = nil; if (![context save:&error]) //this is the line instruments points to { NSLog(@"Unresolved error %@, %@", error, [error userInfo]); exit(-1); } } }

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• How to implement a syndication receiver? (multi-client / single server)

  - by LeonixSolutions

  I have to come up with a system architecture. A few hundred remote devices will be communicating over internet with a central server which will receive data and store it in a database. I could write my own TCP/IP based protocol use SOAP use AJAX use RSS anything else? This is currently seen as one way (telemetry, as opposed to SCADA). Would it make a difference if we make it bi-directional. There are no plans to do so, but Murphy's law makes me wary of a uni-directional solution (on the data plane; I imagine that the control plane is bi-directional in all solutions (?)). I hope that this is not too subjective. I would like a solution which is quick and easy to implement and for others to support and where the general "communications pipeline" from remote deceives to database server can be re-used as the core of future projects. I have a strong background in telecomms protocols, in C/C++ and PHP.

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• Sharing a mex64 file across computers

  - by Shaihi

  I have a mex64 dll compiled on my machine. I used Matlab 2009b with VS2008 Pro to compile the dll. The dll works fine on my Matlab installation. I want a colleague to use the dll so I sent it to him and he gets the following error message when trying to use the dll: ??? Invalid MEX-file 'filename.mexw64': The specified module could not be found. My current assumption is that this is caused because he uses an older Matlab version or missing a dll that I have. I ran dependency checker and asked him to check that he has all the listed dlls. I am still waiting for him to confirm his Matlab version. What other reasons can cause this and can the Matlab version make a difference? (I mean R2009a when I have R2009B and not a huge version diff)

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• Visual Studio 2005 - VC++ compiler C1001 on Windows 7

  - by Fritz H

  When I try to build a simple "Hello World" C++ app on Windows 7 Beta, using Visual Studio 2005 (VC++2005) I get a rather generic error C1001 error (Internal compiler error) The compiler seems to just crash, and Windows pops up its (un)helpful This program has stopped working dialog. The file it complains about is mcp1.cpp. Has anyone come across this before? Cheers, Fritz EDIT: The code is: #include <iostream> int main(int argc, char** argv) { std::cout << "Hello!"; return 0; } EDIT 2: I have installed SP1 as well as SP1 for Vista. VS popped up a warning saying it needs SP1 for Vista, but installing it makes no difference. No ideas about what I can possibly do to fix this?

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• CouchDB Map/Reduce raises execption in reduce function?

  - by fuzzy lollipop

  my view generates keys in this format ["job_id:1234567890", 1271430291000] where the first key element is a unique key and the second is a timestamp in milliseconds. I run my view with this elapsed_time?startkey=["123"]&endkey=["123",{}]&group=true&group_level=1 and here is my reduce function, the intention is to reduce the output to get the earliest and latest timestamps and return the difference between them and now function(keys,values,rereduce) { var now = new Date().valueOf(); var first = Number.MIN_VALUE; var last = Number.MAX_VALUE; if (rereduce) { first = Math.max(first,values[0].first); last = Math.min(last,values[0].last); } else { first = keys[0][0][1]; last = keys[keys.length-1][0][1]; } return {first:now - first, last:now - last}; } and when processing a query it constantly raises the following execption: function raised exception (new TypeError("keys has no properties", "", 1)) I am making sure not to reference keys inside my rereduce block. Why does this function constantly raise this exception?

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• Local variable assign versus direct assign; properties and memory.

  - by Typeoneerror

  In objective-c I see a lot of sample code where the author assigns a local variable, assigns it to a property, then releases the local variable. Is there a practical reason for doing this? I've been just assigning directly to the property for the most part. Would that cause a memory leak in any way? I guess I'd like to know if there's any difference between this: HomeScreenBtns *localHomeScreenBtns = [[HomeScreenBtns alloc] init]; self.homeScreenBtns = localHomeScreenBtns; [localHomeScreenBtns release]; and this: self.homeScreenBtns = [[HomeScreenBtns alloc] init]; Assuming that homeScreenBtns is a property like so: @property (nonatomic, retain) HomeScreenBtns *homeScreenBtns; I'm getting ready to submit my application to the app store so I'm in full optimize/QA mode.

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• Onclick starts gif animation and .mp3, how to sync across browsers

  - by user2958163

  So I am using a text-based jplayer (http://jplayer.org/latest/demo-04/) that I want to sync with a gif animation. Onclick the text link does two things -1. feed the jplayer an mp3 and 2. trigger an animation (via SwapImage). It is important for these two to start at the same time. Right now, this works perfectly in chrome/firefox but in IE and mobile browsers the audio lags considerably. I have tried with the audio preloaded (it is a small 40K mp3) and it makes no difference. I dont think its a bandwidth problem because the problem is the same on repeat clicks. Any pointers on how I can resolve this...

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• Returning IEnumerable<T> vs IQueryable<T>

  - by stackoverflowuser

  what is the difference between returning iqueryable vs ienumerable. IQueryable<Customer> custs = from c in db.Customers where c.City == "<City>" select c; IEnumerable<Customer> custs = from c in db.Customers where c.City == "<City>" select c; Will both be deferred execution? When should one be preferred over the other?

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• Creating Videos: Which Framerate is common in the US?

  - by Stebi

  I know that there are differences in different regions of the world regarding the framerate of videos. E.g. a DVD in Europe is in PAL with 720x756 and 25.0 fps. In the US its the NTSC standard with 720x480 and 29.97 fps. When I don't want to generate a DVD but a plain video file, e.g. WMV oder AVI what framerate is used in USA? I have a end user application where the user can generate videos, so what framerate does the US user expect it to have? Is there a difference in SD and HD video?

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