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• Windows XP batch file concat

  - by dls

  I'm trying to accomplish the following ridiculous task: I have a text file containing a set of fully qualified filesnames. I want to iterate through the file and append each line to a common variable, that can be passed to a command line tool. For example, the file might be: C:\dir\test.txt C:\WINDOWS\test2.txt C:\text3.txt and I'd like to assign them to some variable 'a' such that: a = "C:\dir\test.txt C:\WINDOWS\test2.txt C:\text2.txt" A secondary question is - what is a good batch file reference? I'm finding some stuff in the Windows material, and a lot of home-grown websites, but nothing particularly complete. Thanks!

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• How to track down a Blue Screen of Death triggered by an (usermode) application

  - by mhenry1384

  We have a .Net application consisting of mixed managed and unmanaged code. We have a number of reports of users getting BSOD while using our application. These blue screens happen on different versions of Windows. Mostly XP but one user claims it happens on Windows 7. Some users see it happening when doing one thing, other see it happening when doing something completely different. Of course, we cannot reproduce the problem. Needless to say, I'm stumped. A user mode application shouldn't be able to blue screen the OS so we are running into a bug in a common kernel space application, perhaps buggy antivirus software? Does anyone have any tips on how to track something like this down? We don't have access to a computer where this is happening so we wouldn't be able to hook up a kernel debugger or anything like that.

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• Can Silverlight be linked with a C++ static library ?

  - by Niklaos

  Hi, I'm currently doing research to start a new project. This project will be in 2 parts a light Client (probably console) and an heavy one using silverlight. The light client must be cross-platform. However, they will both use the same Core (by the way, the core will need to use the sockets). I'd like to use C++ to build the light client but given that the core is common to both applications, it would be much appreciated if it's could be the same code. So the question is quite simple : Can Silverlight be compilated with a C++ static library ? And if it's possible, what about cross-platform issues (with moonlight) ? If it's not possible. Which language can i use to work with silverlight while being cross-platform ? Because of performance, a compilated language will be better ! Thanks for your expertise :)

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• Am I underestimating MySQL ?

  - by user281434

  Hi I'm about to implement a feature on my website that recommends content to users based on the content they already have in their library (a la Last.fm). A single table holds all the records of the content they have added, so a row might look something like: -------------------- | userid | content | -------------------- | 28 | a | -------------------- When I want to recommend some content for a user, I use a query to get all the user id's that have content a added in their library. Then, out of those user id's, I make another query that finds the next most common content among those users (fx. 'b'), and show that to the user. My problem is when I'm thinking about the big picture here. Say that eventually my site will hold something like 500.000 rows in the table, will this make the MySQL response very slow or am I underestimating MySQL here?

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• Multiple "If...then....else if...." problem ?

  - by bahamut100

  Hi, I'm new in ASP development. This is my source code : ident = request.Form("ident") pass=request.Form("passe") response.write(ident) response.write(pass) if pass= "m" and ident="m" Then Session("connect")="membre" response.redirect("../") else if pass= "g" and ident="g" Then Session("connect")="gest" response.redirect("../") else if pass= "a" and ident="a" Then Session("connect")="admin" response.redirect("../") else response.redirect("ident.asp") End If But, with this code, I get this : "Erreur de compilation Microsoft VBScript error '800a0401' Fin d'instruction attendue /iisHelp/common/500-100.asp, line 11 Dim objASPError, blnErrorWritten, strServername, strServerIP, strRemoteIP Dim strMethod, lngPos, datNow, strQueryString, strURL --------------------------------------------------------------------------^ Erreur de compilation Microsoft VBScript error '800a03f6' 'End' attendu /groupe2/stage23/TP3/verif_id.asp, line 18 "

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• can I debug my web project and wcf project on same vs 2008 instance ?

  - by dotnetcoder

  I have two projects in my solution   1- asp.net web project.   2- wcf serivce project.   3- other common projects between two listed above Current on the local dev machine I have to run two visual studio instance to run both projects in debug mode. That makes the system run out of resources as these projects share some other project in the soultion which are heavy in files. Is there a way i can hookup the wcf project on a sinlge visual stodio instance and also be able to debug my asp.net web project. ? I do not want to combine the web and wcf project in to one. Have already considred this option. thanks for sharing your thoughts in advance.

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• [cli/linux] get plain text from raw emails (not attachments extraction)

  - by etuardu

  Hi, having a raw email as input (i.e. the text between "DATA" and "." sent by a smtp client) I need to extract the mail content (which I know is always text only) as plain text. This means decoding transfer encoding (if any: could be base64 or quoted-printable), merging mutiparts (if any), and stripping headers. I tried various tools that would do that: mewdecode, uudecode, uudeview... I only managed to get this last one to work, but it won't output anything if the mail is not MIME encoded and it stores its output in an unpredictable (nor forceable) filename, so it's hard to use it in a not-interactive shell script. Since this is a pretty common job (every mail client have to do that), it's weird it's so complicated. Do you have some hints? (Actually, forcing uudeview to output in a certain file would be good enough). Thank you!

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• Reserved Memory Addresses?

  - by Nate

  Is there a list of reserved memory addresses out there - a list of addresses that the memory of a user-space program could never be allocated to? I realize this is most likely per-OS or per-architecture, but I was hoping someone might know some of the more common OSes and Arches. I could only dig one up for a few versions of windows: for windows NT,2k and XP that would be: 0x00000000 - 0x0000ffff - lowest page is protected to simplify debugging 0x00001000 - 0x7ffeffff - memory area for your application 0x7fff0000 - 0x7fffffff - protected area to keep memory-functions from damaging the following part 0x80000000 - 0xffffffff - memory where the system including drivers and so on is located Anyone know about for Linux, or BSD (or anything else, for that matter)?

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• Project Reference added to one of the projects in the same solution appears broken in another solution

  - by CSharpLearner

  I have couple of solutions. In the first solution I have many projects. One of the project named 'A' has a project reference of another project 'B' of the same solution. In second solution, the project 'A' is added but not the project 'B'. Both the solutions build successfully. However, in second solution, reference of B added in the project A, appears broken. Why? Now, in first solution, instead of adding Project reference of B into A, i simply add a 'file reference' of B's DLL (which is copied at the common output directory created for all the projects) into A. Now the reference appears broken in both the solution even though both the solutions are built successfully. May I know what should I do when I have such a scenario?

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• How to do simultaneous builds in two Git branches?

  - by james creasy

  I've looked at git-new-workdir, but I don't want the history to be shared because the branches have a release-main relationship. That is, changes in the release branch I want to propagate to the main line, but changes in the main line I don't want in the release line. A common pattern for me is to fix a bug in the release line, integrate it to the main line, then start builds in both branches at the same time. Is there a way to do this with git-new-workdir, do I need to clone, or is there a better solution? Thanks

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• Can JavaScript be overused?

  - by ledhed2222

  Hello stackoverflow, I'm a "long time reader first time poster", glad to start participating in this forum. My experience is with Java, Python, and several audio programming languages; I'm quite new to the big bad web technologies: HTML/CSS/JavaScript. I'm making two personal sites right now and am wondering if I'm relying on JavaScript too much. I'm making a site where all pages have a bit of markup in common--stuff like the nav bar and some sliced background images--so I thought I'd make a pageInit() function to insert the majority of the HTML for me. This way if I make a change later, I just change the script rather than all the pages. I figure if users are paranoid enough to have JavaScript turned off, I'll give them an alert or something. Is this bad practice? Can JavaScript be overused? Thanks in advance.

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• SQL Server - how to determine if indexes aren't being used?

  - by rwmnau

  I have a high-demand transactional database that I think is over-indexed. Originally, it didn't have any indexes at all, so adding some for common processes made a huge difference. However, over time, we've created indexes to speed up individual queries, and some of the most popular tables have 10-15 different indexes on them, and in some cases, the indexes are only slightly different from each other, or are the same columns in a different order. Is there a straightforward way to watch database activity and tell if any indexes are not hit anymore, or what their usage percentage is? I'm concerned that indexes were created to speed up either a single daily/weekly query, or even a query that's not being run anymore, but the index still has to be kept up to date every time the data changes. In the case of the high-traffic tables, that's a dozen times/second, and I want to eliminate indexes that are weighing down data updates while providing only marginal improvement.

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• PHP OOP problem

  - by Isis

  Hello <?php class Templater { var $params = array(); public static function assign($name, $value) { $this->params[] = array($name => $value); } public static dunction draw() { return $this->params; } } <?php $test = Templater::assign('key', 'value')->draw(); print_r($test); I need to function "assign" was static, but $params was common for the whole class.. BUt this code is not working(( Fatal error: Using $this when not in object context Any ideas?

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• End marker for command line arguments

  - by rwallace

  I'm writing a program which takes filenames and options on the command line in the usual way, and also can be directed to read arguments from a file. I'm implementing the semi-standard -- to turn off special treatment of subsequent arguments, and # as comment marker. I also want to implement a marker for 'disregard all arguments from here on', i.e. an end marker. Is there a common/semi-standard way to indicate this? Or, what way would people find least surprising?

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• Adobe After Efects Plugin With Cocoa (Overriding malloc)

  - by mustISignUp

  Messing about a bit, i have a working Adobe After Effects plugin with a bit of Obj-c / Cocoa in it (NSArray and custom objects - not ui stuff). The SDK guide states:- Always use After Effects memory allocation functions. In low-memory conditions (such as during RAM preview), it’s very important that plug-ins not compete with After Effects for OS memory, and deal gracefully with out-of-memory conditions. Failing to use our functions can cause lock-ups, crashes, and tech support calls. Don’t do that. If you’re wrapping existing C++ code, overloading new and delete to use our functions will save substantial reimplementation. On Windows, derive all classes from a common base class which implements new and delete. so my question.. is something compatible with the above statement possible in Obj-c?

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• Yet another URL prefix regex question (to be used in C#).

  - by Hamish Grubijan

  Hi, I have seen many regular expressions for Url validation. In my case I want the Url to be simpler, so the regex should be tighter: Valid Url prefixes look like: http[s]://[www.]addressOrIp[.something]/PageName.aspx[?] This describe a prefix. I will be appending ?x=a&y=b&z=c later. I just want to check if the web page is live before accessing it, but even before that I want to make sure that it is properly configured. I want to treat bad url and host is down conditions differently, although when in doubt, I'd rather give a host is down message, because that is an ultimate test anyway. Hopefully that makes sense. I guess what I am trying to say - the regex does not need be too aggressive, I just want it to cover say 95% of the cases. This is C# - centric, so Perl regex extensions are not helpful to me; let's stick to the lowest common denominator. Thanks!

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• Best way to get photoshop to optimise 35 related pictures for fast transmission

  - by thenerd

  I have 35 pictures taken from a stationary camera aimed at a lightbox in which an object is placed, rotated at 10 degrees in each picture. If I cycle through the pictures quickly, the image looks like it is rotating. If I wished to 'rotate' the object in a browser but wanted to transmit as little data as possible for this, I thought it might be a good idea to split the picture into 36 pictures, where 1 picture is any background the images have in common, and 35 pictures minus the background, just showing the things that have changed. Do you think this approach will work? Is there a better route? How would I achieve this in photoshop?

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• Do preconditions ALWAYS have to be checked?

  - by Pin

  These days I'm used to checking every single precondition for every function since I got the habit from an OS programming course back at uni. On the other hand, at the software engineering course we were taught that a common precondition should only be checked once, so for example, if a function is delegating to another function, the first function should check them but checking them again in the second one is redundant. I do see the redundancy point, but I certainly feel it's safer to always check them, plus you don't have to keep track of where they were checked previously. What's the best practice here?

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• Fonts in a multi-platform environment

  - by Stephen Burke

  What is the best way to deal with fonts in a multi-platform distributed system? If I want to use a common font across all systems to show to the user, what's the best way to do this. From the little I've been reading each platform looks to have fonts that are of the same family (ie serif, sans-serif) but with different names. CSS looks to have the functionality baked in where it will make the best selection it can of font on the users machine. Is there similar functionality either in system libraries or external libraries for Windows & Linux. I'm using C++ mainly? Can someone point me in the right direction for documentation as well? Thanks

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• Any way to make GetTypes() less brittle.

  - by scope-creep

  I'm iterating through all the types in GAC, GAC_32 and GAC_MSIL looking for specific types, fundamentally to match those using clauses in my source code, so when I compile the source. I'll know exactly what assembly dll's to provide. I'm getting all the file names from each of those directory and applying GetTypes to each assembly in turn and comparing the returned types against my using list. But the problem I have is that GetTypes() keeps crapping out with an exception, when it can't load the types from a loaded assembly. Is their any way to make GetTypes() less brittle. For instance, when parsing this assembly on my box, {blbmmc, Version=6.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35}, it craps out. Any suggestions welcome. I know this is a fairly lengthly process, but I figure i'll eventually use a subset of common assemblies to search, or possibly cache the list of types-assembly dll name at program start. Thanks.

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• CodeIgniter won't run in a subdirectory

  - by Tim Piele

  I have a CodeIgniter install running in our root web directory that I copied into a subdirectory called /dev... I edited the config/config.php file to reflect the change so it is now like this: $config['base_url'] = 'http://mysite.com/dev'; $config['sbase_url'] = 'https://mysite.com/dev'; $config['default_email'] = '[email protected]'; $config['site_url'] = 'http://mysite.com/dev'; This is my .htaccess file: <IfModule mod_rewrite.c> RewriteEngine On RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*)$ index.php/$1 [L] </IfModule> When I hover over any links on the site they are correct, for example the contact us page link reads www.mysite.com/dev/contact but when I click any of the links I get a 404 error... Is there something common I am missing?

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• Working with sets of rows in (My)SQL and comparing values

  - by Pep.

  Hello, I am trying to figure out the SQL for doing some relatively simple operations on sets of records in a table but I am stuck. Consider a table with multiple rows per item, all identified by a common key. For example: serial model color XX1 A blue XX2 A blue XX3 A green XX5 B red XX6 B blue XX1 B blue What I would for example want to do is: Assuming that all model A rows must have the same color, find the rows which dont. (for example, XX3 is green). Assuming that a given serial number can only point to a single type of model, find out the rows which that does not occur (for example XX1 points both to A and B) These are all simple logically things to do. To abstract it, I want to know how to group things by using a single key (or combination of keys) and then compare the values of those records. Should I use a join on the same table? should i use some sort of array or similar? thanks for your help

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• Referencing invalid memory locations with C++ Iterators

  - by themoondothshine

  I am a big fan of GCC, but recently I noticed a vague anomaly. Using __gnu_cxx::__normal_iterator (ie, the most common iterator type used in libstdc++, the C++ STL) it is possible to refer to an arbitrary memory location and even change its value without causing an exception! Is this expected behavior? If so, isn't a security loophole? Here's an example: #include <iostream> using namespace std; int main() { basic_string<char> str("Hello world!"); basic_string<char>::iterator iter = str.end(); iter += str.capacity() + 99999; *iter = 'x'; cout << "Value: " << *iter << endl; }

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• JBoss 4.0.5 startup takes 15 minutes deploying a single war file

  - by dkblinux98

  This instance of JBoss deploys several war files. The rest of the JBoss startup takes about 5 minutes or less. But when it gets to one particular war file, startup just hangs with no further output to the jboss log. It waits there for about 15 minutes and then suddenly the war starts deploying. The rest of the JBoss startup is then fine. What I want to know is what steps do you recommend I take to diagnose the cause of this condition? It is not possible to upgrade this site to a newer version of JBoss nor java (currently 1.5.0.7). It is running on 32-bit CentOS 5.3 Linux on 3 xen-based virtual servers in a load balanced configuration. The code is common to all three servers via an nfs share. This same issue was seen, however, when the 3 servers were physical and the code was local to each server. The servers are each 2 cpu, 4GB RAM servers.

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• Python: What's a correct and good way to implement __hash__()?

  - by random-name

  What's a correct and good way to implement hash()? I am talking about the function that returns a hashcode that is then used to insert objects into hashtables aka dictionaries. As hash() returns an integer and is used for "binning" objects into hashtables I assume that the values of the returned integer should be uniformly distributed for common data (to minimize collisions). What's a good practice to get such values? Are collisions a problem? In my case I have a small class which acts as a container class holding some ints, some floats and a string.

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