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• "No context-sensitive help installed" , "user32.dll" and "uxtheme.dll" AV errors on Delphi with no reason

  - by Javid

  This is very strange guys. I wrote a simple application. When I make my commands executed fast by moving mouse (event is on mouse move), I experience the following errors if I run my application without debugger (if I do, application just hangs and nothing happens): 1- "No context-sensitive help installed" however i haven't used help in my app. 2- Access violation errors from "uxtheme.dll" and "user32.dll" libraries! well, i think these errors happen when Windows Messages are sent quickly one after another. I came across these errors a while ago in a huge application. In both application I used SendMessage command, but what am i doing wrong? I'm now using Delphi 2010 Has anyone ever experienced this?!

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• From interpeted to native code: "dynamic" languages compiler support

  - by Daniel

  First, I am aware that dynamic languages is a term used mainly by a vendor; I am using it just to have a container word to include languages like Perl (a favorite of mine), Python, Tcl, Ruby, PHP and so on. They are interpreted but I am interested here to refer to languages featuring strong capability to support the programmer efficiency and the support for typical constructs of modern interpreted languages My question is: there are dynamic languages can be compiled efficiently in native executable code - typically for Windows platforms? Which ones? Maybe using some third part ad-hoc tools? I am not talking about huge executables carrying with them a full interpreter or some similar tricks nor some smart module able to include its own dependances or some required modules, but a honest, straight, standard, solid executable code. If not, there is some technical reason inhibiting the availability of such a best-of-both-world feature? Thanks! Daniel

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• WCF configuration setting information at a glance

  - by Newbie

  Is there any site from where I can get the most of the information about WCF configuration settings e.g. keyEntropyMode,maxStatefulNegotiations,sessionKeyRolloverInterval, negotiationTimeout etc. I have started recently working in wcf but is facing many troubles in understanding the terms. There are to be honest huge. And whenever I get stuck, it takes a long time for me to solve it (searching and searching in google and after spending sometime hours I may get the solution). Henceforth, I think it is better to know if not all astleast some of the terms and their usage and what they means. It would be great help if anyone can point such a link. I searched in the net with " wcf configuration file elements" but with not much luck. Thanks

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• recommended parser for XML in java(absolute beginner to xml)

  - by poeschlorn

  Hi Pro's, which parser (java) would you recommend for parsing GPX data? Im looking for a one that is very intuitive to use and should not need too much RAM (it seems that DOM requires too much, doesn't it?). I have no idea about parsing xml, so it is time for me to learn this ;-) My documents are not very huge and are always read twice(a point for DOM), but I don't want to keep as few things as possible in RAM. What would you do in this situation? Which one would you coose and why?

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• How to create a custom ADO Multi Demensional Catalog with no database

  - by Alan Clark

  Does anyone know of an example of how to dynamically define and build ADO MD (ActiveX Data Objects Multidimensional) catalogs and cube definitions with a set of data other than a database? Background: we have a huge amount of data in our application that we export to a database and then query using the usual SQL joins, groups, sums etc to produce reports. The data in the application is originally in objects and arrays. The problem is the amount of data is so large the export can take 2 hours. So I am trying to figure out a good way of querying the objects in memory, either by a custom OLAP algorithm or library, or ADO MD. But I haven't been able to find an example of using ADO MD without a database behind it. We are using Delphi 2010 so would use ADO ActiveX but I imagine the ADO.NET MD is similar. I realize that if the application data was already stored in a database the problem would solve itself. Also if Delphi had LINQ capability I could query the objects and arrays that way.

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• Customizing Hibernate Criteria - Adding conditions to a left join

  - by Douglas Ferguson

  I need to be able to do the following: Select * from Table1 left join Table2 on id1 = id2 AND i1 = ? Hibernate criteria doesn't allow be to specify the i1 = ? part. The existing code is using hibernate criteria and it would be a huge refactor to swap out for HQL Does anybody have any tips how I could implement this differently or any way to override the Hibernate Criteria? I'm not opposed to cracking open hibernate and modifying, but when I began to dig it, there seems to be layers upon layers of abstractions. I never found the the point where SQL is actually generated...

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• Using Website Information Without WebView

  - by Mr. Monkey

  I am very new to this, and I more looking for what information I need to study to be able to accomplish this. What I want to do is use my GUI I have built for my app, but pull the information from a website. If I have a website that looks like this: (Sorry, can't post pics yet) http:// dl.dropbox.com/u/7037695/ErrorCodeApp/FromWebsite.PNG (full website can be seen at http://www.atmequipment.com/Error-Codes) What would I need from the website so that if a user entered an error code here: http:// dl.dropbox.com/u/7037695/ErrorCodeApp/InApp.PNG It would use the search from the website, and populate the error description in my app? I know this is a huge question, I'm just looking for what is actually needed to accomplish this, and then I can start researching from there. -- Or is it even possible?

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• Can I see shader preprocessor output?

  - by GLaddict

  I am using #defines, which I pass runtime to my shader sources based on program state, to optimize my huge shaders to be less complex. I would like to write the optimized shader to a file so that next time I run my program, I do not have to pass the #defines again, but I can straight compile the optimized shaders during program startup because now I know what kind of shaders by program needs. Is there a way to get the result from shader preprocessor? I can of course store the #define values to a file and based on that compile the shaders during program startup but that would not be as elegant.

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• WeakReferences are not freed in embedded OS

  - by Carsten König

  I've got a strange behavior here: I get a massive memory leak in production running a WPF application that runs on a DLOG-Terminal (Windows Embedded Standard SP1) that behaves perfectly fine if I run it localy on a normal desktop (Win7 prof.) After many unsucessful attempts to find any problem I put one of those directly beside my monitor, installed the ANTs MemoryProfiler and did one hour test run simulating user operations on both the terminal and my development PC. Result is, that due to some strange reasons the embedded system piles up a huge amount of WeakReference and EffectiveValueEntry[] Objects. Here are are some pictures: Development (PC): And the terminal: Just look at the class list... Has anyone seen something like this before and are there known solutions to this? Where can I get help? (PS the terminals where installed with images prepared for .net4)

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• Home Pages in ASP.NET MVC

  - by Maxim Z.

  I'm trying out ASP.NET MVC, but, after reading a huge tutorial, I'm slightly confused. I understand how Controllers have Actions that URLs are routed to, but how do home pages work? Is the home page its own controller (e.g. "Home") that has no actions? This sounds correct, but how is it functionality implemented without Actions (no Actions means no methods that call the View Engine)? In other words, my question is this: how are home pages implemented (in terms of Controllers and Views)? Could you please provide sample code?

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• How do I do automatic data serialization of data objects in Haskell

  - by Adam Gent

  One of the huge benefits in languages that have some sort of reflection/introspecition is that objects can be automatically constructed from a variety of sources. For example in Java I can use the same objects for persisting to a db (with Hibernate) serializing to XML (with JAXB) or serializing to JSON (json-lib). You can do the same in Ruby and Python also usually following some simple rules for properties or annotations for Java. Thus I don't need lots "Domain Transfer Objects". I can concentrate on the domain I am working in. It seems in very strict FP like Haskell and Ocaml this is not possible. Particularly Haskell. The only thing I have seen is doing some sort of preprocessing or meta-programming (ocaml). Is it just accepted that you have to do all the transformations from the bottom upwards? In other words you have to do lot of boring work to turn a data type in haskell into JSON/XML/DB Row object and back again into a data object.

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• PHP Extension using libtidy compiles, but does not load

  - by ewokker

  I wrote an extension in C++ that uses libtidy, and it runs perfectly under PHP when I compile PHP --with-tidy. However, it would be nice to have the extension run on a vanilla PHP. When I try to use the extension, I get something like: PHP Warning: PHP Startup: Unable to load dynamic library 'extension.so': undefined symbol: tidyCleanAndRepair in Unknown on line 0 and the extension is not loaded. Obviously, the official tidy extension works fine. I have the relevant libtidy development packages installed on the system, and it compiles+links without a problem. I have tried to look through the code for the tidy extension, but it is a huge mass of macros - copying pieces at random felt like cargo code. Besides linking to the library with PHP_ADD_LIBRARY_WITH_PATH(tidy, $TIDY_LIBDIR, TIDY_SHARED_LIBADD), Is there a PHP extension or C statement that fixes this error? Thanks in advance!!

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• DEADLOCK_WRAP error when using Berkeley Db in python (bsddb)

  - by JiminyCricket

  I am using a berkdb to store a huge list of key-value pairs but for some reason when i try to access some of the data later i get this error: try: key = 'scrape011201-590652' contenttext = contentdict[key] except: print the error <type 'exceptions.KeyError'> 'scrape011201-590652' in contenttext = contentdict[key]\n', ' File "/usr/lib64/python2.5/bsddb/__init__.py", line 223, in __getitem__\n return _DeadlockWrap(lambda: self.db[key]) # self.db[key]\n', 'File "/usr/lib64/python2.5/bsddb/dbutils.py", line 62, in DeadlockWrap\n return function(*_args, **_kwargs)\n', ' File "/usr/lib64/python2.5/bsddb/__init__.py", line 223, in <lambda>\n return _DeadlockWrap(lambda: self.db[key]) # self.db[key]\n'] I am not sure what DeadlockWrap is but there isnt any other program or process accessing the berkdb or writing to it (as far as i know,) so not sure how we could get a deadlock, if its referring to that. Is it possible that I am trying to access the data to rapidly? I have this function call in a loop, so something like for i in hugelist: #try to get a value from the berkdb #do something with it I am running this with multiple datasets and this error only occurs with one of them, the largest one, not the others.

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• ASP.NET MVC - separating large app

  - by marc_s

  I've been puzzled by what I consider a contradiction in terms: ASP.NET MVC claims to be furthering and supporting the "separation of concern" motto, which I find a great idea. However, it seems there's no way of separating out controllers, model or views into their own assembly, or separating areas into assemblies. With the fixed Controller, Model and View folders in your ASP.NET MVC, you're actually creating a huge hodge podge of things. Is that the separation of concerns, really?? Seems like quite the contrary to me. So what I'm wondering: how can I create an ASP.NET MVC solution that will either separate out controllers, the model, and the folders full of views, into separate assemblies? how can I put areas of ASP.NET MVC 2 into separate assemblies? or how else do you manage a large ASP.NET MVC app - which has several dozen or even over a hundred controllers, lots of model and viewmodel classes, and several hundred views?

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• Hierarchical Data in MySQL is fast to retrieve?

  - by ajsie

  i've got a list of all countries - states - cities (- subcities/villages etc) in a XML file and to retrieve for example a state's all cities it's really quick with XML (using xml parser). i wonder, if i put all this information in mysql, is retrieving a state's all cities as fast as with XML? cause XML is designed to store hierarchical data while relational databases like mysql are not. the list contains like 500 000 entities. so i wonder if its as fast as XML using either of: Adjacency list model Nested Set model And which one should i use? Cause (theoretically) there could be unlimited levels under a state. And which is fastest for this huge dataset? Thanks!

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• How to convert a gi-normous integer (in string format) to hex format? (C#)

  - by eviljack

  Given a potentially huge integer value (in c# string format), I want to be able to generate it's hex equivalent. Normal methods don't apply here as we are talking arbitrarily large numbers, 50 digits or more. The techniques I've seen which use a technique like this: // Store integer 182 int decValue = 182; // Convert integer 182 as a hex in a string variable string hexValue = decValue.ToString("X"); // Convert the hex string back to the number int decAgain = int.Parse(hexValue, System.Globalization.NumberStyles.HexNumber); won't work because the integer to convert is too large. For example I need to be able to convert a string like this: 843370923007003347112437570992242323 to it's hex equivalent. these don't work: http://stackoverflow.com/questions/1139957/c-convert-int-to-hex-and-back-again http://stackoverflow.com/questions/74148/how-to-convert-numbers-between-hex-and-decimal-in-c

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• what happens to, the controls or the iframe or the div, which is

  - by user287745

  hidden:- does it get transferred to the user side? disabled:- does it get transferred to the user side? what i want is, a aspx page will be having many iframes to display different different pages, there will be many div tags to display css formatted information to understand the what i mean by many:- i have to transfer a complete website with 30 aspx pages into one single page! have simply combined every thing resulting in one extremely huge page my concern is the on local host it works loads fast, but when on online server accessed by numerous people for education purposes, the site ( ONE PAGE ) WILL SLOW DOWN terribly to overcome this i thought of using hidden and disable options. can any one help and possible suggest an improved way of achieving the above yes it sounds silly but this is the requirement thank you

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• Using custom scrollbar on jquery lightbox

  - by Bhupi

  Hi, I need to use a custom scrollbar on jquery lightbox. My requirement is that when user clicks on a link then a popup appears and the popup contains 2 or 3 tabs, user can click on any tab to see it's content. In one of those tabs I need scrollbar to show huge content but the scrollbar should not be default it should be custom with any color. Currently I am using "JQuery's JScrollPane" plugin http://jscrollpane.kelvinluck.com to achieve the functionality, but this is not working on IE 6,7 and 8, mean scrollbar does not appear on IE. It works fine on Firefox and Chrome. Note: the same plugin works fine on IE also when I use it on page's element which is available while page load but not while the element is shown dynamically on lightbox. Thanks

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• Mac-native text editor that can syntax-highlight diff files?

  - by strawtarget

  I do something like "svn diff /mystuff/current.diff". I want to view this .diff file with syntax highlighting. jEdit does it, but it's a huge beast and it takes a while to start up. I want something lightweight/native. Smultron/Fraise, TextWrangler, TextEdit, Dashcode don't seem to highlight .diff files. FileMerge seems to want to generate diff files, not show you existing ones. TextMate does the trick, but it's not free. I'd feel happier dropping $50 US if I was going to take advantage of it for anything more than a diff viewer. Are there any alternatives to jEdit or TextMate that I should consider?

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• Deleting orphans with JPA

  - by homaxto

  I have a one-to-one relation where I use CascadeType.PERSIST. This has over time build up a huge amount of child records that has not been deleted, to such an extend that it is reflected in the performance. Now I wish to add some code that cleans up the database removing all the child records that are not referenced by a parent. At the moment we are talking 400K+ records, at I need to run the code on all customer installations just to be sure they do not run into the same problem. I think the best solution would be to run a named query (because we support two databases) that deletes the necessary records, and this is where I get into problems, because how should I write it in JPQL? The result I want can be defined like the following sql statement, which unfortunaltely does not run on MySQL. DELETE FROM child c1 WHERE c1.pk NOT IN (SELECT DISTINCT p.pk FROM child c2 JOIN parent p ON p.child = c2.pk);

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• JRuby 1.7.0 will not install bundler given plenty of memory

  - by user678615

  I installed jruby with rvm install jruby-1.7.0 and it ran out of memory when it tried to create the gemsets so I started by trying to install bundler with the new version and this is what I get ~>gem install bundler Error: Your application used more stack memory than the safety cap of 2048K. Specify -J-Xss####k to increase it (#### = cap size in KB). Specify -w for full StackOverflowError stack trace So I moved up the memory and I still got nothing with a huge chunk of memory ~>JRUBY_OPTS=-J-Xss1024m gem install bundler Error: Your application used more stack memory than the safety cap of 1024M. Specify -J-Xss####k to increase it (#### = cap size in KB). Specify -w for full StackOverflowError stack trace How the hell can that not be enough I run applications on less than that

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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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• How to visually represent file size

  - by Keith Williams

  This will be a bit subjective, I'm afraid, but I'd value the advice of the Collective. Our web application lists documents that users can download; standard file navigator stuff: Type Name Created Size ----------------------------------- PDF Doc 1 01/04/2010 15 KB PDF Doc 2 01/04/2010 15 MB Currently we list the file size as text, but I'd like to improve this by having some way of showing visually whether the file is tiny, normal or huge. The reason for this is so that users can scan the list quickly and spot files that are likely to take a long time downloading. My options currently are: Bigger font sizes for bigger files (drawback: the layout can become untidy) Icons (like a wi-fi signal strength indicator; drawback: harder to scan) Keep all sizes in KB so the number of zeroes indicates size (drawback: users have to calculate the "friendly" size in their heads) I know this is quite a minor thing, but I'd appreciate anyone's thoughts on the matter!

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• Double Negation in C++ code.

  - by Brian Gianforcaro

  I just came onto a project with a pretty huge code base. I'm mostly dealing with C++ and a lot of the code they write uses double negation for their boolean logic. if (!!variable && (!!api.lookup("some-string"))) { do_some_stuff(); } I know these guys are intelligent programmers, it's obvious they aren't doing this by accident. I'm no seasoned C++ expert, my only guess at why they are doing this is that they want to make absolutely positive that the value being evaluated is the actual boolean representation. So they negate it, then negate that again to get it back to its actual boolean value. Is this a correct? or am I missing something else? Thanks, Brian Gianforcaro

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• how to work with javascript typed arrays without using for

  - by ramesh babu

  var sendBuffer = new ArrayBuffer(4096); var dv = new DataView(sendBuffer); dv.setInt32(0, 1234); var service = svcName; for (var i = 0; i < service.length; i++) { dv.setUint8(i + 4, service.charCodeAt(i)); } ws.send(sendBuffer); how to workout this wihout using for loop. for loop decreasing performance while works with huge amount of data.

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