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• What is needed to get Delphi back on top?

  - by Jim McKeeth

  Delphi 2009 is due in the next couple months, which is its 12th release since Turbo Pascal became Delphi in 1995. Despite continued innovation it has not returned to its level of popularity before the Inprise fiasco. Many developers with Delphi backgrounds are moving to C# and many Delphi legacy applications are being rewritten in C#, despite the fact Delphi supports .NET and in many cases the existing application could be ported without rewriting. Is it just a losing battle to compete against Microsoft's tools on their platform? Is there something Code Gear / Delphi can do now that they are under new management to regain market share? What can enthusiasts do to help? Why do you do Delphi programming? or Why are you not doing Delphi programming?

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• Web scraping with Python

  - by Jack

  I'm currently trying to scrape a website that has fairly poorly-formatted HTML (often missing closing tags, no use of classes or ids so it's incredibly difficult to go straight to the element you want, etc.). I've been using BeautifulSoup with some success so far but every once and a while (though quite rarely), I run into a page where BeautifulSoup creates the HTML tree a bit differently from (for example) Firefox or Webkit. While this is understandable as the formatting of the HTML leaves this ambiguous, if I were able to get the same parse tree as Firefox or Webkit produces I would be able to parse things much more easily. The problems are usually something like the site opens a <b> tag twice and when BeautifulSoup sees the second <b> tag, it immediately closes the first while Firefox and Webkit nest the <b> tags. Is there a web scraping library for Python (or even any other language (I'm getting desperate)) that can reproduce the parse tree generated by Firefox or WebKit (or at least get closer than BeautifulSoup in cases of ambiguity).

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• Flex: HTTP request error #2032

  - by alexey

  In Flex 3 application I use HTTPService class to make requests to the server: var http:HTTPService = new HTTPService(); http.method = 'POST'; http.url = hostUrl; http.resultFormat = 'e4x'; http.addEventListener(ResultEvent.RESULT, ...); http.addEventListener(FaultEvent.FAULT, ...); http.send(params); The application has Comet-architecture. So it makes long running requests. While waiting a response for this request, other requests can be made concurrently. The application works in most cases. But sometimes some clients get HTTP request error executing long running request: faultCode:Server.Error.Request faultString:'HTTP request error' faultDetail:'Error: [IOErrorEvent type="ioError" bubbles=false cancelable=false eventPhase=2 text="Error #2032"]. URL: 'http://example.com/ws' I think it depends on user's browser. Any ideas?

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• Issue with jQuery ajax post (working with get). error 12031

  - by jul

  hi, UPDATE: I didn't set the response mimetype to 'application/json'. It works now. In the website I'm working on (http://piem.org:8000/) I've got an issue with an ajax post request. Every time the search button is clicked or the google maps 'idle' is triggered I send a request to get some data. While the request works as expected in most cases, it returns an error when I click a result and come back to the search page. (type 'barcelona' in the search box to get the unique restaurant in the db). The server processes the request properly but it seems that the error occurs when the javascript receives it (it returns a "12031" error code). It works properly with FF 3.0.6, IE 8.0 and Chrome 5.0 with GET, and with FF with both POST and GET. Anybody can help? thanks jul

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• Antlr Lexer Quoted String Predicate

  - by Loki

  I'm trying to build a lexer to tokenize lone words and quoted strings. I got the following: STRING: QUOTE (options {greedy=false;} : . )* QUOTE ; WS : SPACE+ { $channel = HIDDEN; } ; WORD : ~(QUOTE|SPACE)+ ; For the corner cases, it needs to parse: "string" word1" word2 As three tokens: "string" as STRING and word1" and word2 as WORD. Basically, if there is a last quote, it needs to be part of the WORD were it is. If the quote is surrounded by white spaces, it should be a WORD. I tried this rule for WORD, without success: WORD: ~(QUOTE|SPACE)+ | (~(QUOTE|SPACE)* QUOTE ~QUOTE*)=> ~(QUOTE|SPACE)* QUOTE ~(QUOTE|SPACE)* ;

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• java for loop pre-increment vs post-increment

  - by rails_guy

  for (int i = 0; i < 3; ++i) System.out.print(i + ".."); //prints 0..1..2 for (int i = 0; i < 3; i++) System.out.print(i + ".."); //prints 0..1..2 So what is the difference? in what cases can the pre-increment be used wrongly or by mistake which causes a bug...

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• PDO and SQL IN statements

  - by Sai

  Im using a sequel for search like this using PDOs $states = "'SC','SD'"; $sql = "select * from mytable where states in (:states)"; $params = array(':states'=>$states); and I use my function $result = $this->selectArrayAssoc($sql, $params); where my selectArrayAssoc function as following public function selectArrayAssoc($sql, $params = array()){ try{ $sth = $this->db->prepare($sql); $sth->execute($params); $result = $sth->setFetchMode(PDO::FETCH_ASSOC); return $sth->fetchAll(); }catch(PDOException $e){ print $e->getMessage(); //Log this to a file later when in production exit; } } it does not take the quoted variables, I think it is suppressing, in such cases how to deal with this.

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• store everything only once, smarter

  - by hsmit

  In the digital world a lot is stored multiple times. As a thought experiment or creative challenge I want you to think about making this more efficient and maybe reuse more. Think of the following cases: an mp3 track is downloaded multiple times, copied over various devices on website a login form is often rebuild many times, why not reuse more code? words themselves are used many times questions and answers are accidentally saved at many places in parallel images or photos often describe the same data (Eiffel tower, Golden gate, Taj Mahal) etc etc Are you aware of solutions? Or are you thinking about similar topics? Ideas? Blueprints? I'd love to hear from you!

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• How to structure Python package that contains Cython code

  - by Craig McQueen

  I'd like to make a Python package containing some Cython code. I've got the the Cython code working nicely. However, now I want to know how best to package it. For most people who just want to install the package, I'd like to include the .c file that Cython creates, and arrange for setup.py to compile that to produce the module. Then the user doesn't need Cython installed in order to install the package. But for people who may want to modify the package, I'd also like to provide the Cython .pyx files, and somehow also allow for setup.py to build them using Cython (so those users would need Cython installed). How should I structure the files in the package to cater for both these scenarios? The Cython documentation gives a little guidance. But it doesn't say how to make a single setup.py that handles both the with/without Cython cases.

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• maximum execution time for javascript

  - by Andrew Chang

  I know both ie and firefox have limits for javascript execution here: hxxp://support.microsoft.com/?kbid=175500 Based on number of statements executed, I heard it was 5 million somewhere in ie hxxp://webcache.googleusercontent.com/search?q=cache:_iKHhdfpN-MJ:kb.mozillazine.org/Dom.max_script_run_time+dom.max_script_run_time&hl=en&gl=ca&strip=1 (google cache since site takes forever to load for me) based on number of seconds in firefox, it's 10 seconds by default for my version The thing I don't get is what cases will go over these limits: I'm sure a giant loop will go over the limit for execution time But will an event hander go over the limit, if itself it's execution time is under the limit but if it occurs multiple times? Example: Lets say I have a timer on my page, that executes some javascript every 20 seconds. The execution time for the timer handler is 1 second. Does firefox and ie treat each call of the timer function seperatly, so it never goes over the limit, or is it that firefox/ie adds up the time of each call so after the handler finishes, so after 200 seconds on my site (with the timer called 10 times) an error occurs even though the timer handler itself is only 1 second long?

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• How to implement List, Set, and Map in null free design?

  - by Pyrolistical

  Its great when you can return a null/empty object in most cases to avoid nulls, but what about Collection like objects? In Java, Map returns null if key in get(key) is not found in the map. The best way I can think of to avoid nulls in this situation is to return an Entry<T> object, which is either the EmptyEntry<T>, or contains the value T. Sure we avoid the null, but now you can have a class cast exception if you don't check if its an EmptyEntry<T>. Is there a better way to avoid nulls in Map's get(K)? And for argument sake, let's say this language don't even have null, so don't say just use nulls.

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• Can I use ruby rest-client to POST a binary file to an http API?

  - by Angela

  I have been using rest-client in ruby in post XML to a third-party API. I need to be able to include a binary image that's uploaded. How do I do that? Uploading Attachments Both letters and postcards will, in most cases, require the attachment of documents. Those attachments might be PDFs in the case of letters or images in the case of postcards. To uploading an attachment, submit a POST to: http://www.postful.com/service/upload Be sure to include the Content-Type and Content-Length headers and the attachment itself as the body of the request. POST /upload HTTP/1.0 Content-Type: application/octet-stream Content-Length: 301456 ... file content here ... If the upload is successful, you will receive a response like the following: 290797321.waltershandy.2

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• Image 8-connectivity without excessive branching?

  - by shoosh

  I'm writing a low level image processing algorithm which needs to do alot of 8-connectivity checks for pixels. For every pixel I often need to check the pixels above it, below it and on its sides and diagonals. On the edges of the image there are special cases where there are only 5 or 3 neighbors instead of 8 neighbors for a pixels. The naive way to do it is for every access to check if the coordinates are in the right range and if not, return some default value. I'm looking for a way to avoid all these checks since they introduce a large overhead to the algorithm. Are there any tricks to avoid it altogether?

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• What some good books on software testing/quality?

  - by mjh2007

  I'm looking for a good book on software quality. It would be helpful if the book covered: The software development process (requirements, design, coding, testing, maintenance) Testing roles (who performs each step in the process) Testing methods (white box and black box) Testing levels (unit testing, integration testing, etc) Testing process (Agile, waterfall, spiral) Testing tools (simulators, fixtures, and reporting software) Testing of embedded systems The goal here is to find an easy to read book that summarizes the best practices for ensuring software quality in an embedded system. It seems most texts cover the testing of application software where it is simpler to generate automated test cases or run a debugger. A book that provided solutions for improving quality in a system where the tests must be performed manually and therefore minimized would be ideal.

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• Ho to launch Choose File dialog on Mac

  - by Manish

  Hi All, I am using LSOpenItemsWithRole() to open any file from my appication. It works fine for all files which has a default application to get opened on Mac, but for the files which cannot be open with any default application this method returns an error kLSApplicationNotFoundErr and does nothing. For such cases I want my application to launch the "Choose Application" dialog box, so that end user can choose any application from there to open the file. This dialog box pops up whenever any such file is directly opened by double clickig. Is there is any direct API call to do the same? any help will be appreciated, Thanks in advance! Manish

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• Regular Expressions: Positive Lookahead and Word Border question

  - by Inf.S

  Hello again Stackoverflow people! Assume I have these words: smartphones, smartphone I want to match the substring "phone" from within them. However, in both case, I want only "phone" to be returned, not "phones" in the first case. In addition to this, I want matches only if the word "phone" is a suffix only, such that: fonephonetics (just an example) is not matched. I assumed that the regex (phone([?=s])?)\b would give me what I need, but it is currently matching "phones" and "phone", but not the "fonephonetics" one. I don't need "phones". I want "phone" for both cases. Any ideas about what is wrong, and what I can do? Thank you in advance!

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• Delphi: Moving away from VSS

  - by Mohammed Nasman

  We are team of few Delphi developers who have been using VSS since years (I know it's a pity), but we don't use any of the advanced features of VCS, so it was working fine in many cases (but some times it was driving me crazy :( ). The good thing that we have with VSS that we use third-party plug-ings to integrate VSS with Delphi, which is working great, but now when our projects becomes larger, and we would like to move a way from VSS. I have looked at few other VCS (free and commercial) and found most of them seems be made for Linux guys, and you have to use command line for many admin work(I know I'm windows guy :P). What I'm looking for the new Version control that it should be easy to use and to maintain and Integrated nicely with Delphi IDE (D2007), or at least have a good UI for the Admins an developers.

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• Progressive Enhancement with box-shadow

  - by toby

  I would like to use WebKit's box-shadow css property for a little drop-down. The code would look like: .drop_down{ -webkit-box-shadow: 1px 1px 4px #888; box-shadow: 1px 1px 4px #888; } However, for browsers that do not have this capability, I would like to use borders to approximate this drop shadow, like so: .drop_down{ border-top: 1px solid #bbb; border-left: 1px solid #bbb; border-right: 2px solid #bbb; border-bottom: 2px solid #bbb; } The problem is, I don't want the border-based shadow to show up for the browsers that DO support box-shadow. I would like to avoid browser sniffing because I assume it's hard to cover all the cases. What is the simplest way to do this? I prefer a javascript-less solution, but I will consider simple javascript-based ones too.

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• How to do this NHibernate one-to-one mapping?

  - by JMSA

  This is a problem of unidirectional one-to-one mapping in NHibernate. Student.cs public class Student { public int ID { get; set; } public int Roll { get; set; } public int RegNo { get; set; } public string Name { get; set; } public StudentDetail StudentDetail { get; set; } } StudentDetail.cs public class StudentDetail { public int ID { get; set; } public string Father { get; set; } public string Mother { get; set; } } How can I map these classes (how do the hbm mapping files look like) to the following two distinct cases of one-to-one relationships? 1st case: 2nd case:

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• How to automatically fix MISSING reference in a dll when a referenced library is broken in VB6?

  - by systempuntoout

  What do you do when you break compatibility on a common library used by many other libraries? What i usually do is: For every dll that reference the broken one Checkout dll Checkout vbp project Open vpb project with VB6 Ide Click on References button Uncheck MISSING reference and OK Click on References button Check references and OK Click on Make dll Close project This can be a pita activity, when you have many Dll to recompile and it can be error prone because you could miss some Dll (anyway we have continuous integration that alert this cases). What's your best practice to handle this scenario?

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• Programmatically Centering UIViews

  - by David Foster

  I've seen a bunch of similar questions to this, but nothing seems to be completely what I'm looking for. Do forgive me if I have missed the solution answered in another question, though! Right. I have a view. 160 pixels both tall and wide. I know that this view is going to be used as a subview, and I know that it always needs to be centered about both axis in whatever situation it's used. If defining the view programmatically, how can I be sure that it is always perfectly centered, horizontally and vertically, relative to its superview? So far, all I have is this simple code: - (void)loadView { self.view = [[UIView alloc] initWithFrame:CGRectMake(80, 150, 160, 160)]; self.view.backgroundColor = [UIColor greenColor]; self.view.autoresizingMask = (UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleBottomMargin); [self.view release]; } This does the centralization, but only in the simplest of cases. Any insight is greatly appreciated.

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• Is it a bad practice to add extra attributes to html elements?

  - by burak ozdogan

  Hi, Sometimes I add an attribute to some of my controls. Like: <a href id="myLlink" isClimber="True">Chris Sharma</a> I know it is not a valid html. But it helps me in some cases. Is this considered as a bad practice? A friend of mine says that it is ok for Intranet environment but on internet it might not be find friendly by search engines. If it is not a good practice, what are the best practicess? Thanks

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• How do I get the displayname of the logged in user in EWS?

  - by tig

  Exchange Autodiscovery will give me the user's Display Name via the UserSettingName.UserDisplayName property. However, in cases where autodiscovery fails and connection needs to be done manually I can't figure out how to get the DisplayName. I tried this, but I just get the users' email address: _service = new ExchangeService(); _service.Credentials = new System.Net.NetworkCredential(exchangeSettings.EmailAddress, exchangeSettings.Password); _service.Url = new Uri(exchangeSettings.ExternalEwsUrl); NameResolutionCollection resolvedNames = _service.ResolveName(exchangeSettings.EmailAddress); exchangeSettings.UserDisplayName = resolvedNames.First().Mailbox.Name; Thanks

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• load/unload C dll with C# problems

  - by Goran

  I'm having problems with external native DLL. I'm working on ASP.NET 1.1 web application and have this DLL which I load through DLLImport directives. This is how I map DLL functions: [DllImport("somedllname", CallingConvention=CallingConvention.StdCall)] public static extern int function1(string lpFileName,string lpOwnerPw,string lpUserPw); [DllImport("somedllname", CallingConvention=CallingConvention.StdCall)] public static extern int function2(int nHandle); I call the dll methods and all works great, but I have problems with this DLL crashing my web site on some cases, so I would like an option to unload the dll after I use it. I found a solution at this link, but I don't have 'UnmanagedFunctionPointer' attribute in .NET 1.1 available. http://blogs.msdn.com/jonathanswift/archive/2006/10/03/Dynamically-calling-an-unmanaged-dll-from-.NET-_2800_C_23002900_.aspx Is there a way I can achieve what this guy did with his example?

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• The "Why" behind PMD's rules.

  - by James Kingsbery

  Is there a good resource which describes the "why" behind PMD rule sets? PMD's site has the "what" - what each rule does - but it doesn't describe why PMD has that rule and why ignoring that rule can get you in trouble in the real world. In particular, I'm interested in knowing why PMD has the AvoidInstantiatingObjectsInLoops and OnlyOneReturn rules (the first seems necessary if you need to create a new object corresponding to each object in a collection, the second seems like it is a necessity in many cases that return a value based on some criteria). Just to be clear, I know that I can disable these and how to do that, I'm just wondering why they are there in the first place. Sorry if there's something obvious I missed out there, but I did a Google search and SO search before posting this.

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