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• What is on the 68000 stack when classic MacOS enters a program?

  - by John Källén

  I'm trying to understand an old classic Mac application's entry point. I've disassembled the first CODE resource (not CODE#0, which is the jump table). The code refers to some variables off the stack: a word at 0004(A7), an array of long words of starting at 000C(A7) whose length is the value at 0004(A7), and a final long word beyond that array that seems to be a pointer to a character string. The array of long words looks like strings at first glance, so it looks superficially like we're dealing with an (int argc, char ** argv) situation, except the "argv" array is inline in the stack frame. What should a program be expecting on its stack / registers when it first gets called by the Mac OS?

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• Refresh the Parent form of "Call_form" after Child form is closed in Oracle 10g

  - by DotNetDan

  What I need is: what trigger to use and where to put it. I will give you an example of what I am doing. I have a Contract form that is fully editable except the contract financial areas, which is read only. I want the user to press a button called, “change rates” and that will have a trigger “When-Button-Pressed” and call_form(UpdateFinancials);. Now, in this screen, I have the user change the financial information such as increase the contract from 50k to 100k. Then the user saves and exits. This will then close the child form "UpdateFinancials" and show the parent form "ContractForm". The problem is, it still has all the old information on it. I need the information in the form to refresh when it gets back from the child form of the Call_Form function.

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• Why does this program require MSVCR80.dll?

  - by Runner

  #include <gtk/gtk.h> int main( int argc, char *argv[] ) { GtkWidget *window; gtk_init (&argc, &argv); window = gtk_window_new (GTK_WINDOW_TOPLEVEL); gtk_widget_show (window); gtk_main (); return 0; } I tried putting various versions of MSVCR80.dll under the same directory as the generated executable(via cmake),but none matched. Is there a general solution for this kinda problem? UPDATE Some answers recommend install the VS redist,but I'm not sure whether or not it will affect my installed Visual Studio 9, can someone confirm?

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• How can I use Perl to scrape a website that reveals its content with JavaScript?

  - by AmbroseChapel

  I need to write a Perl script to scrape a website. The website can only be scraped with JavaScript, and the user is on Windows. I got some way with Win32::IE::Mechanize on my work machine, which has IE6, but then I moved to my netbook which has IE8, and can't even get as far as fetching a simple page. Is Win32::IE::Mechanize up to date with the latest versions of IE? But, more to the point, given a recent WinXP machine, what's the quickest, easiest way to scrape a site which only reveals its content via JavaScript?

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• Hibernate entities stored as HttpSession attribute values

  - by njudge

  I'm dealing with a legacy Java application with a large, fairly messy codebase. There's a fairly standard 'User' object that gets stored in the HttpSession between requests, so the servlets do stuff like this at the top: HttpSession session = request.getSession(true); User user = (User)session.getAttribute("User"); The old user authentication layer (which I won't describe; suffice to say, it did not use a database) is being replaced with code mapped to the DB with Hibernate. So 'User' is now a Hibernate entity. My understanding of Hibernate object life cycles is a little fuzzy, but it seems like storing 'User' in the HttpSession now becomes a problem, because it will be retrieved in a different transaction during the next request. What is the right thing to be doing here? Can I just use the Hibernate Session object's update() method to reattach the User instance the next time around? Do I need to?

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• Stored procedure and trigger

  - by noober

  Hello all, I had a task -- to create update trigger, that works on real table data change (not just update with the same values). For that purpose I had created copy table then began to compare updated rows with the old copied ones. When trigger completes, it's neccessary to actualize the copy: UPDATE CopyTable SET id = s.id, -- many, many fields FROM MainTable s WHERE s.id IN (SELECT [id] FROM INSERTED) AND CopyTable.id = s.id; I don't like to have this ugly code in trigger anymore, so I has extracted it to a stored procedure: CREATE PROCEDURE UpdateCopy AS BEGIN UPDATE CopyTable SET id = s.id, -- many, many fields FROM MainTable s WHERE s.id IN (SELECT [id] FROM INSERTED) AND CopyTable.id = s.id; END The result is -- Invalid object name 'INSERTED'. How can I workaround this? Regards,

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• How to update a library in my application

  - by andho

  I have used a library like ZendFramework in my project which I have put in Subversion. Now I want to update the version that I have put in Subversion. What's the best way to do this? Copying, taking a svn diff and patching the working copy or just copying the new files over the old files? I have tried svn diff with svn diff but this doesn't output anything. Normal diff outputs some stuff but it also considers the .svn directories.

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• Constant template parameter class manages to link externally

  - by the_drow

  I have a class foo with an enum template parameter and for some reason it links to two versions of the ctor in the cpp file. enum Enum { bar, baz }; template <Enum version = bar> class foo { public: foo(); }; // CPP File #include "foo.hpp" foo<bar>::foo() { cout << "bar"; } foo<baz>::foo() { cout << "baz"; } I'm using msvc 2008, is this the standard behavior? Are only type template parameters cannot be linked to cpp files?

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• Apache Modrewrite & 301 redirect- Dynamic URLs with characters.

  - by Ben Chesters

  I've been trying for weeks, literally, to rename these URLs and also ensure the old one is 301 redirected to the new one: www.example.com/?mod=11&p=215 - www.example.com/clean-url-section www.example.com/?mod=96&tab=6 - www.example.com/clean-url-section-2 Does anyone have any idea why I am having no luck, I got 500 server errors or nothing at all! Is it because of the question marks and characters? I'd be grateful for any help. I have tried this (below) and it seems to be redirecting to the http:// www.example.com/new-page (this page doesn't exist, as I only want it to rename the page BUT use a 301 so that search engines continue you to value it) RewriteCond %{query_string} mod=96&tab=6 RewriteRule (.*) http:// www. example.com/new-page? [R=301,L] Scratching my head!

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• Equivalent for Java's System.getProperty("java.io.tmpdir") in C ?

  - by B_

  As the title says, the java.io.tmpdir property in Java is really nice, and I can't find an equivalent for C. I'm writing for Windows and in Visual Studio. I don't want to just use something like C:\Temp because in later versions of windows the appropriate directory could be something like C:\Users\[UserName]\AppData\Local\Temp and a way to retrieve this would be much easier. I want a directory and not just a temp file because I'm downloading and executing a file from the internet. As a side note, if anyone can give me tips about how to better google for C stuff it would be much appreciated :)

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• Form with target="_blank" will produce empty POST data in IE6

  - by Seeker

  I have an iframe containing a form. I want the form to point to a new window when the user submits it. Basically, the following code should do the trick: <?php var_dump($_POST); ?> <form method="post" action="test_post_to_blank.php" target="_blank"> <input type="text" name="test" value="test" /> <input type="submit" /> </form> The problem is that in IE6 a new window is opened with empty POST data. Is there any other way I can get the job done? This does not occur in newer versions of IE. Thanks in advance ;).

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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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• Inheritance policy when designing the base class

  - by Xaqron

  I have a base class and a derived class both in design phase. The base class will remain one but many derived class will inherit from it. So it's very costly to make change to derived classes in the future and I'm looking for the best design to prevent this. In fact derived class only needs a few methods to override (if needed) but it's tempting to reveal more details to it. My question is about the policy which is extensible in future. Can I minimize the inherited methods/properties to derived class and reveal more in the next versions if needed without any change to derived classes ? Or I should reveal anything that maybe used by derived classes in the future and let them to choose if they need them or not ? Thanks

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• Find all those columns which have only null values, in a MySQL table

  - by Robin v. G.

  The situation is as follows: I have a substantial number of tables, with each a substantial number of columns. I need to deal with this old and to-be-deprecated database for a new system, and I'm looking for a way to eliminate all columns that have - apparently - never been in use. I wanna do this by filtering out all columns that have a value on any given row, leaving me with a set of columns where the value is NULL in all rows. Of course I could manually sort every column descending, but that'd take too long as I'm dealing with loads of tables and columns. I estimate it to be 400 tables with up to 50 (!) columns per table. Is there any way I can get this information from the information_schema? EDIT: Here's an example: column_a column_b column_c column_d NULL NULL NULL 1 NULL 1 NULL 1 NULL 1 NULL NULL NULL NULL NULL NULL The output should be 'column_a' and 'column_c', for being the only columns without any filled in values.

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• 2D Engine scrolling on OpenGL via hardware?

  - by drudru

  hi, I'm using OpenGL as the bottom end for a 2D tiling engine. When everything is 2D, it is simple to optimize certain issues. For example, scrolling. If I know a certain section of the screen needs to scroll off the bottom, then I can just blit over that portion. I'm evening moving more than 1 pixel at a time. Without explicit hardware support (think old nintendo hw), this requires a lot of pixel writes. An on chip bitblt would be the next best thing. Essentially, I'm looking at how I can optimize my GL calls to use VRAM texture renders as efficient hardware blits. Is it possible to have GL scroll the framebuffer, or should I just resign myself to double-buffering and re-rendering an entire scene for each frame? Thx

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• Get rid of all user data of Android application after bigger update

  - by Johe Green

  Hi, I completely revamped an app. Tested it for a while on my device and emulator. The app worked fine. However when I updated the app through the Android market, my users experienced crashes. Since there is no way to properly debug this procedure I asume the crash is caused by old data which is not being removed from the device (probably from the onsavedstate bundle?!). Is there a way to do a "clean/total" reinstall without having the user to do it manually? Best Regards Johe

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• jquery javascript error using $(...) selector

  - by waitinforatrain

  Hi, I'm migrating some old code to jquery: xmlHttp.onreadystatechange = function() { if (xmlHttp.readyState == 4) { $("#" + ajaxArea).html (xmlHttp.responseText); $("#" + ajaxArea).attr('title', 'Login'); $("#" + ajaxArea).dialog({ height : 140, modal : true }); } }; where ajaxArea is the ID of a DIV in the HTML. The dialog bit is basically adapted from the jQuery example here: http://jqueryui.com/demos/dialog/#modal All of it works fine up until the last line. Firefox throws an error that simply says "$(" for that line. Anyone know what might be causing this?

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• Why does this page look different between IE, Firefox & Chrome

  - by ripper234

  In Firefox it looks just like I want it to look, in IE it looks "a bit weird", and in Chrome it's all twisted. What non-standard HTML I am using that makes it looks so different between browsers? Specifically, how can I fix the Chrome & IE versions to look more like Firefox? Note that Chrome only goes haywire if all or almost all columns have the yellow stickies. If one or two columns are empty, then Chrome displays the page just like Firefox. The full HTML is at this pastebin.

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• Can we view objets in the JVM memory?

  - by Sebastien Lorber

  Hey, At work we found that on some instances (particulary the slow ones) we have a different behaviour, acquired at the reboot. We guess a cache is not initialized correctly, or maybe a concurrency problem... Anyway it's not reproductible in any other env than production. We actually don't have loggers to activate... it's an old component... Thus i'd like to know if there are tools that can help us to see the different objets present in the JVM memory in order to check the content of the cache... Thank you!

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• Design guidelines for cache mechanism

  - by Delashmate

  Hi All, I got assignment to write design for cache mechanism (this is work assignment, not homework), This is my first time writing a design document, Our program display images for doctors, and we want to reduce the parsing time of the images So we want to save the parsed data in advance (in files or inside database) Currently I have several design key ideas: Handle locks - each shared data structure should be handled, also files Test - add test to verify the data from the cache is equal to the data from the files To decouple the connection to the database- not to call directly to the database Cleanup mechanisem- to delete old files if the cahce directory exceed configurable threshold Support config file Support performance tool in the feature I will also add class diagram, data flow charts, and workflow What do you think I should add to the key ideas? Do you know good link to atricales about design? Thanks in advance, Dan

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• ext-js update params dynamically

  - by jeffkolez

  I'm building a search using ext-js. I have an event that fires on keyup. I want to be able to change either the URL I'm searching, or the params. I've had luck with neither. Here's my snippit of code: Ext.get("search").on('keyup', function() { proxy.url = '/customer/list?key=' + $('search').value; store.load(); }); But, no love for me. The store loads, but the proxy.url is the old value. Is what I'm trying to do possible? Thanks in advance!

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• gprof and execl() - is it possible?

  - by Chris

  Background: I have a game (an old-school-esque MUD) which I've been attempting to profile with gprof. The documentation of gprof (on Linux 2.6) states that The profiled program must call "exit"(2) or return normally for the profiling information to be saved in the gmon.out file. Now, if I kill the server with the shutdown command, the application "returns normally" (i.e., main() returns) and I get a gmon.out to analyze. However, it's far more common to reboot the server. The reboot command does the following: Writes usernames and socket FD numbers to disc. Makes a call to execl(). The new process looks for the stored data, picks up the FDs, and moves on. I see the following error on the command line, as the whole process fails: Profiling timer expired ./program Question: Is it possible to get a gmon.out file from the execl()-calling process? Perhaps some environmental parameter to execl(), or else perhaps a different, gprof-friendly, system call to achieve the same effect (beginning a new process while preserving file descriptors)?

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• C# Generic List constructor gives me a MethodAccessException

  - by evilfred

  Hi, I make a list in my code like so: List<IConnection> connections = new List<IConnection>(); where IConnection is my own interface. This is in a .NET 2.0 executable. If I run the code on my machine (with lots of .Net versions installed) it works fine. If I run it on my test machine (which only has .NET 3.5 SP1 installed) then I get a MethodAccessException in the System.Collections.Generic.List constructor. Any ideas what could be going wrong?

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• How to change the looks or improve the looks of the VB.NET application?

  - by Nitz

  Hey Guys We are very much bored with use of very powerful but very dirty looks of VB.Net Controls. We made application in VB.NET 2005. Now we want to change the look and filed of the application. we had tried to change with by changing colors and font but it still looks like very dirty. So how we change that, I had heard about WPF but never had used it. what you recommended me to change the look and field of the application. Dirty means, very old style. [ for me ]

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• What is the best way to inject a javascript script from another domain into a page? (without using a

  - by lowellk

  Here is a snippet of javascript for loading a script onto a given page asynchronously. I was wondering if there was anything wrong with it? Can it be improved? I haven't played with this yet, but some things I'm worried about are: - cross browser support - when script.readyState is true, will the old version of that function get clobbered? - can i always count on there being a head or body element? Here it is: function injectScript(url, callback){ var script = document.createElement('script'); script.type = "text/javascript"; script.setAttribute('async', 'true'); script.src = url; (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(script); if (callback) { if (script.readyState){ script.onreadystatechange = function(){ if(script.readyState === "loaded" || script.readyState === "complete"){ script.onreadystatechange = null; callback(); } }; }else{ script.onload = function() { callback(); } } } }

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