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  • Dynamic upsert in postgresql

    - by Daniel
    I have this upsert function that allows me to modify the fill_rate column of a row. CREATE FUNCTION upsert_fillrate_alarming(integer, boolean) RETURNS VOID AS ' DECLARE num ALIAS FOR $1; dat ALIAS FOR $2; BEGIN LOOP -- First try to update. UPDATE alarming SET fill_rate = dat WHERE equipid = num; IF FOUND THEN RETURN; END IF; -- Since its not there we try to insert the key -- Notice if we had a concurent key insertion we would error BEGIN INSERT INTO alarming (equipid, fill_rate) VALUES (num, dat); RETURN; EXCEPTION WHEN unique_violation THEN -- Loop and try the update again END; END LOOP; END; ' LANGUAGE 'plpgsql'; Is it possible to modify this function to take a column argument as well? Extra bonus points if there is a way to modify the function to take a column and a table.

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  • What's the "right" way to get Win32 p/Invoke declarations?

    - by Daniel Earwicker
    I typically use the site http://www.pinvoke.net/ to grab a DllImport declaration whenever I need to call a Win32 API, and I've noticed it's the de facto standard response on Stack Overflow to API interop questions. Is this what "everyone" does? Is there a better way? Does Microsoft offer an alternative? e.g. a tool that reads .h files and outputs an assembly. Why aren't there some standard assemblies that just expose all the Win32 APIs? What would be the barrier to creating them and using them, as an alternative to a site like pinvoke.net?

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  • A few problems with Delphi involving Mail Merge, SQL + Databases.

    - by Daniel
    My first problem is with mail merge. I have created a a Data File and a table, yet I am not able to fill my table with information from my Data File. The << just seems to be inserted after wherever the cursor is on the page, which is not where the table is. All that is entered into the actual table is a '59'. Therefore I think I either need to to change the code or be able to move the cursor. Here is the code I am currently using: wrdDoc.Tables.Add(wrdSelection.Range, ADOTable1.FieldCount, 3); wrdDoc.Tables.Item(1).Columns.Item(1).SetWidth(51,wdAdjustNone); wrdDoc.Tables.Item(1).Columns.Item(2).SetWidth(20,wdAdjustNone); wrdDoc.Tables.Item(1).Columns.Item(3).SetWidth(100,wdAdjustNone); // Set the shading on the first row to light gray wrdDoc.Tables.Item(1).Rows.Item(1).Cells .Shading.BackgroundPatternColorIndex := wdGray25; // BOLD the first row wrdDoc.Tables.Item(1).Rows.Item(1).Range.Bold := True; // Center the text in Cell (1,1) wrdDoc.Tables.Item(1).Cell(1,1).Range.Paragraphs.Alignment := wdAlignParagraphCenter; // Fill each row of the table with data wrdDoc.Tables.Item(1).Cell(1, 1).Range.InsertAfter('Time'); wrdDoc.Tables.Item(1).Cell(1, 2).Range.InsertAfter(''); wrdDoc.Tables.Item(1).Cell(1, 3).Range.InsertAfter('Teacher'); For Count := 1 to (ADOTable1.FieldCount - 1) do begin wrdDoc.Tables.Item(1).Cell((Count + 1), 1).Range.InsertAfter(wrdSelection.Range,'Time' + IntToStr(Count)); wrdDoc.Tables.Item(1).Cell((Count + 1), 2).Range.InsertAfter(wrdSelection.Range,'THonorific' + IntToStr(Count)); wrdDoc.Tables.Item(1).Cell((Count + 1), 3).Range.InsertAfter(wrdSelection.Range,'TSurname' + IntToStr(Count)); end; My second problem is that I do not know what the correct SQL syntax is for editing the name of a column in the database (I am using Delphi 7 and Microsoft Jet Engine if that makes a difference). The third problem is that when I add a new column to my database manually (which I need to do) I get a 'violation' error in one of my units when I activate an ADOTable. This only happens on one unit and it happens when I add a column with any name anywhere in the table. I know that is vague but I can't seem to narrow down the problem any further than that. If you could help with me with any of those it would be great. Thanks.

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  • Create an Edit view similar to Contacts App

    - by Daniel Granger
    I have an edit view in my app which is a instance of UITableViewController and contains one cell with a textfield in a grouped table. At the moment this cell is at the top of the screen and is firstResponder so they keyboard is visible as well. But in all the Apples apps like the Contacts App when you edit a piece of information like an Email it buts both of its rows in the middle between the Nav Bar and the Keyboard not at the top of the screen. How do I achieve this effect? Many Thanks

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  • Copy an array backwards? Array.Copy?

    - by daniel
    I have a List<T> that I want to be able to copy to an array backwards, meaning start from List.Count and copy maybe 5 items starting at the end of the list and working its way backwards. I could do this with a simple reverse for loop; however there is probably a faster/more efficient way of doing this so I thought I should ask. Can I use Array.Copy somehow? Originally I was using a Queue as that pops it off in the correct order I need, but I now need to pop off multiple items at once into an array and I thought a list would be faster.

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  • jQuery Validate on form submitted by JavaScript

    - by Daniel
    My form is submitted by a link using JavaScript, but I am also trying to validate the from justing jQuery validate. The validation doesn't work when submitted by the link, but it does if I change the link to a submit button. What am I doing wrong? My form: <form id="findmatch" method="post" action="search"> <div> <label class="formlabel">Match Type <input type="text" name="matchtype" id="matchtype" class="forminput" /> </label> <label class="formlabel">Location (postcode) <input type="text" name="location" id="location" class="forminput" /> </label> <label class="formlabel">Radius (miles) <input type="text" name="Radius" id="Radius" class="forminput" /> </label> <label class="formlabel">Keywords <input type="text" onblur="javascript:usePointFromPostcode(document.getElementById('location').value, showCompleteLatLng)" onchange="javascript:usePointFromPostcode(document.getElementById('location').value, showCompleteLatLng)" name="keywords" id="keywords" class="forminput" /> </label> <input id="lat" class="hidden" name="lat" type="text" value="" /> <input id="lon" class="hidden" name="lon" type="text" value="" /> <a href="javascript:document.getElementById('findmatch').submit();" onmouseover="javascript:usePointFromPostcode(document.getElementById('location').value, showCompleteLatLng)" class="submit">Search</a> </div> </form> And my jQuery is <script type="text/javascript"> $(document).ready(function () { $("#findmatch").validate({ rules: { location: "required", Radius: { required: true, digits: true }, keywords: "required" }, messages: { location: "Please enter your postcode", Radius: { required: "Please enter a radius", digits: "Please only enter numbers" }, keywords: "Please enter the keywords you wish to search for" } }); }); </script>

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  • Consequences in PHP of implementing an interface through two different routes?

    - by Daniel Bingham
    What are the consequences of implementing the same interface through two different routes in PHP, are there any? What I mean, is something like this: interface baseInterface {} abstract class baseClass implements baseInterface { } interface myInterface extends baseInterface {} class myClass extends baseClass implements myInterface {} In this case myClass implements baseInterface from two different parents - myInterface and baseClass. Are there any consequences to this? My instinct is that PHP should handle this fine, but I just want to make sure. What exactly does PHP do in this case? Does it just check to see that the necessary functions are implemented for the interface each time it discovers it and call it a day or does it do something more?

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  • Which is the best pick?

    - by Daniel
    Hi, considering I have experience with Java SE: which language should I learn(and is best for that purpose) in order to build web applications some day with it? I have been contemplating PHP and Java EE. The latter does indeed seems as an obvious choice given my Java SE knowledge. But how does it fares in comparison with PHP and how good is it for the aforementioned purpose? If there is a better language for this purpose, feel free to recommend it. Thank you.

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  • As a Web Developer, how complicated is your average job? [closed]

    - by Daniel S
    Hey people, I'm 16 years old and I've recently started to do freelance jobs. I've been playing with PHP since I was 12 and I think that I can code reasonably well. So far, I've created a library for fetching info from LinkedIn profiles and some Wordpress plugins. Right now this client wants me to convert an HTML template into a Wordpress theme for using as a website. I feel this is a tad easy, so I wanted to ask, as professional web programmers, are most assignments harder than this?

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  • iPad Simulator View

    - by Daniel
    I am looking to increase the size of my iPad simulator when it is fired up on my mac, how would I go about doing this? The size of the simulator right now is very very small, I can't even see the text on it!

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  • Move to php in windows? Concern, hints, "please don't do!"?

    - by Daniel
    I am considering to move frome Microsoft languages to PHP (just for web dev) which has quite an interesting syntax, a perlish look (but a wider programmer base) and it allows me to reuse the web without reinventing it. I have some concerns too. I would be more than happy to gather some wisdom from stackoverflow community, (challenge to my opinions warmly welcome). Here are my doubts. Efficiency. Cgi are slow, what I am supposed to use? Fastcgi? Or what else? Efficiency + stability. Is PHP on windows really stable and a good choice in terms of performances? Database. I use very often MSSQL (I regret, i like it). Could I widely and efficiently interface PHP with MSSQL (using smartly stored pro, for example). XSLT + XML performance. I work quite a lot with XML and XSLT and I really find the MS xml parser a great software component. Are parser used in PHP fast, reliable and efficient (I am interested mainly in DOM, not SAX)? Objects. Is the PHP object programming model valid end efficient? 6 Regex. How efficient is PHP processing regexp? Many thanks for your advices.

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  • What books help one to learn to read code?

    - by Daniel
    Lion's Commentary on Unix Sixth Edition with Source Code is a wonderful book to learn how to read code. Reading code is important -- how does one learn how to write excellent code without having read excellent code? But, sadly, while great writers, of fiction and non-fiction, all spend a great deal of time reading stuff, we, programmers, seem to avoid it like the plague. Worse still, programming books usually go the same way. They might show a pattern or a style, but they often avoid showing good, complex code, and helping one go through it. There are exceptions, of course. I hope. So, with that in mind, what books are to be found which help one learn how to read code?

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  • ((System.Object)p == null)

    - by Daniel Bryars
    Why do this: // If parameter cannot be cast to Point return false. TwoDPoint p = obj as TwoDPoint; if ((System.Object)p == null) { return false; } Instead of this: // If parameter cannot be cast to Point return false. TwoDPoint p = obj as TwoDPoint; if (p == null) { return false; } I don't understand why you'd ever write ((System.Object)p)? Regards, Dan

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  • NHibernate : Root collection with an root object

    - by Daniel
    Hi, I want to track a list of root objects which are not contained by any element. I want the following pseudo code to work: IList<FavoriteItem> list = session.Linq<FavoriteItem>().ToList(); list.Add(item1); list.Add(item2); list.Remove(item3); list.Remove(item4); var item5 = list.First(i => i.Name = "Foo"); item5.Name = "Bar"; session.Save(list); This should automatically insert item1 and item2, delete item3 and item3 and update item5 (i.e. I don't want to call sesssion.SaveOrUpdate() for all items separately. Is it possible to define a pseudo entity that is not associated with a table? For example I want to define the class Favorites and map 2 collection properties of it and than I want to write code like this: var favs = session.Linq<Favorites>(); favs.FavoriteColors.Add(new FavoriteColor(...)); favs.FavoriteMovies.Add(new FavoriteMovie(...)); session.SaveOrUpdate(favs); FavoriteColors and FavoriteMovies are the only properties of the Favorites class and are of type IList and IList. I do only want to persist the these two collection properties but not the Favorites class. Any help is much appreciated.

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  • How can I write a file on an sftp-server with PHP?

    - by Daniel
    Hi, I hope someone here could help me, because I couldn't find any solution with Google. What I have to do is to generate a XML-string (that works) an save that directly into a file on an sftp-server. So far, so good... I used the following code with ftp and it works to, but not with ftps. So I either need another options-configuration for the stream or a different way to solve that task. Here my current code: $host = 'ftp.example.com'; $port = 22; $user = 'xxxxxx'; $pass = 'xxxxxx'; $file = 'test_' . time() . '.txt'; $ftpPath = sprintf('ftp://%s:%s@%s:%d/%s', $user, $pass, $host, $port, $file); $context = stream_context_create(array('ftp' = array('overwrite' = true))); file_put_contents($ftpPath, 'test', 0, $context);

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  • I have a serious problem to use 'happle' in xcode project.

    - by Daniel K
    Hello. I am a korean student, and I'm trying to develop a iphone application. I want to make the application which will shows contents of Web board, which is belong to some website. I will use 'UITableViewController", and the names of contents have to be displayed on table view. I heard that if I want to scrap the text on webpage, I have to use 'parser'. However, Iphone SDKs provide only the parser for xml webpage, NSXmlParser. In my acknowledges, NSXmlParser is not for HTML webpage, so it doesn't provide HTML parsing. If there is any way to parse HTML page with NSXmlParser, I want to know how to use that. Anyway, I found a simple and good HTML parser, 'happle', through searching on google. I tried to add the sources of happle on my xcode project, and I also add the libxml2.2.dylib, and I even set up 'Header search paths' and 'Other Linker Flags'. However It doesn't work. The Compiler show a error message : "No such file in dictionary". In my opinion, there is no frameworks file in my computer, so I tried to set up 'libxml2 frameworks' many times, but I coundn't success. please help me how to parse HTML page and how to set up libxml2... It really urgent. p.s. please forgive my ugly English

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  • Re-authentication required for registered-path links (to ASP.NET site) coming to IE from PowerPoint

    - by Daniel Halsey
    We're using URL routing based on Phil Haack's example, with config modifications based on MSDN Library article #CC668202, to provide "shareable" links for a ASP.NET forms site, and have run into a strange issue: For users attempting to open links from PowerPoint presentations, and who have IE set as their default browser, using one of these links forces (forms-based) re-authentication, even in the same browser instance with a live session. Info: We know the session is still alive. (Page returns information for the currently logged-in user; confirmed via debug watches) This doesn't happen with other browsers (FF, Chrome) or with other programs (Notepad++) as the URL source. We do not have a default path set, as this caused issues with root path handling at initial login. This primarily happens with PowerPoint, but will also happen in Word and OCS. On some machines, even after changing the default browser, Office apps will continue to use IE for these links, forcing this error. (A potential registry fix for this failed, but even if it had worked, we can't control default browser choice for our users.) We can't figure out if this is an Office oddity or is being caused by our decision to use app-level URL routing (rather than IIS rewriting). Has anyone else encountered this and found a solution?

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  • Making uppercase of std::string

    - by Daniel K.
    Which implementation do you think is better? std::string ToUpper( const std::string& source ) { std::string result; result.reserve( source.length() ); std::transform( source.begin(), source.end(), result.begin(), std::ptr_fun<int, int>( std::toupper ) ); return result; } and... std::string ToUpper( const std::string& source ) { std::string result( source.length(), '\0' ); std::transform( source.begin(), source.end(), result.begin(), std::ptr_fun<int, int>( std::toupper ) ); return result; } Difference is that the first one uses reserve method after the default constructor, but the second one uses the constructor accepting the number of characters.

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  • Forwarding HTTP Request with Direct Server Return

    - by Daniel Crabtree
    I have servers spread across several data centers, each storing different files. I want users to be able to access the files on all servers through a single domain and have the individual servers return the files directly to the users. The following shows a simple example: 1) The user's browser requests http://www.example.com/files/file1.zip 2) Request goes to server A, based on the DNS A record for example.com. 3) Server A analyzes the request and works out that /files/file1.zip is stored on server B. 4) Server A forwards the request to server B. 5) Server B returns file1.zip directly to the user without going through server A. Note: steps 4 and 5 must be transparent to the user and cannot involve sending a redirect to the user as that would violate the requirement of a single domain. From my research, what I want to achieve is called "Direct Server Return" and it is a common setup for load balancing. It is also sometimes called a half reverse proxy. For step 4, it sounds like I need to do MAC Address Translation and then pass the request back onto the network and for servers outside the network of server A tunneling will be required. For step 5, I simply need to configure server B, as per the real servers in a load balancing setup. Namely, server B should have server A's IP address on the loopback interface and it should not answer any ARP requests for that IP address. My problem is how to actually achieve step 4? I have found plenty of hardware and software that can do this for simple load balancing at layer 4, but these solutions fall short and cannot handle the kind of custom routing I require. It seems like I will need to roll my own solution. Ideally, I would like to do the routing / forwarding at the web server level, i.e. in PHP or C# / ASP.net. However, I am open to doing it at a lower level such as Apache or IIS, or at an even lower level, i.e. a custom proxy service in front of everything.

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