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• How to re-arrange Excel database from 1 long row, into 3 short rows of unequal lengths and automatically repeat the process?

  - by user326884

  This question is an extension/continuation of my previous question at How to re-arrange Excel database from 1 long row, into 3 short rows and automatically repeat the process? which was answered by Jason Lewis of which I'm grateful. But being a dummy in "Indirect' Excel function, I need assistance again : For example :- In Sheet A, Row 1 has the following data in each cell (all together 72 cells occupied): A1 B1 C1 D1 E1 F1 G1 H1 I1 J1 K1 L1 M1 N1 O1 P1 Q1 R1 S1 T1 U1 V1 W1 X1 Y1 Z1 AA1 AB1 AC1 AD1 AE1 AF1 AG1 AH1 AI1 AJ1 AK1 AL1 AM1 AN1 AO1 AP1 AQ1 AR1 AS1 AT1 AU1 AV1 AW1 AX1 AY1 AZ1 BA1 BB1 BC1 BD1 BE1 BF1 BG1 BH1 BI1 BJ1 BK1 BL1 BM1 BN1 BO1 BP1 BQ1 BR1 BS1 BT1 To be re-arranged into Sheet B in the following format: Row 1 : A1 B1 C1 D1 E1 F1 G1 H1 I1 J1 K1 L1 M1 N1 O1 P1 Q1 R1 S1 T1 U1 V1 W1 X1 Y1 Z1 AA1 AB1 AC1 AD1 AE1 AF1 AG1 AH1 AI1 Row 2 : AJ1 AK1 AL1 AM1 AN1 AO1 AP1 AQ1 AR1 AS1 AT1 AU1 AV1 AW1 AX1 AY1 AZ1 BA1 BB1 BC1 BD1 BE1 BF1 BG1 BH1 BI1 BJ1 BK1 Row 3 : BL1 BM1 BN1 BO1 BP1 BQ1 BR1 BS1 BT1 The Sheet A (database sheet) has a lot of rows (example 3,000 rows, each rows has 72 cells occupied with data), hence the Sheet B (reformatted database) is estimated to have 9,000 rows (i.e. 3 x 3,000) of unequal lengths. Thanking you in anticipation of your speedy response.

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• Issue with kernel boot [OVH SERVER]

  - by Conner Stephen McCabe

  Trying to install OpenVZ kernel on Centos 6.3, Yes my kernel is installed i can see it in the /boot folder, yes it is Rhel6 and yes it is all up to date, i checked this with yum update. My issue comes when i reboot my server with that kernel set as the default, it doesn't load, below i shall put a copy of my grub.conf file and my menu.lst file. Grub.conf: default=0 timeout=5 title vzkernel (2.6.32-042stab057.1) root (hd0,0) kernel /boot/vmlinuz-2.6.32-042stab057.1 ro root=/dev/sda1 initrd /initramfs-2.6.32-042stab057.1.img title linux centos6_64 kernel /boot/bzImage-3.2.13-xxxx-grs-ipv6-64 root=/dev/sda1 ro root (hd0,0) Now i shall paste in Menu.lst; # grub.conf generated by anaconda # # Note that you do not have to rerun grub after making changes to this file # NOTICE: You have a /boot partition. This means that # all kernel and initrd paths are relative to /boot/, eg. # root (hd0,0) # kernel /vmlinuz-version ro root=/dev/mapper/vg_stock-lv_root # initrd /initrd-[generic-]version.img #boot=/dev/sda default=0 timeout=5 splashimage=(hd0,0)/grub/splash.xpm.gz hiddenmenu title Linux OpenVZ (vmlinuz-2.6.32-042stab057.1) root (hd0,0) kernel /boot/vmlinuz-2.6.32-042stab057.1 ro root=/dev/mapper/vg_stock-lv_root rd_LVM_LV=vg_stock/lv_root rd_LVM_LV=vg_stock/lv_swap rd_NO_LUKS rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=l$ initrd /initramfs-2.6.32-042stab057.1.img title CentOS (2.6.32-71.el6.x86_64) root (hd0,0) kernel /boot/bzImage-3.2.13-xxxx-grs-ipv6-64 ro root=/dev/mapper/vg_stock-lv_root rd_LVM_LV=vg_stock/lv_root rd_LVM_LV=vg_stock/lv_swap rd_NO_LUKS rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFO$ initrd /initramfs-2.6.32-71.el6.x86_64.img # dummy text Somebody mentioned something about OVH having added a script which changes the kernel settings or something, and suggested that we either remove the script or reinstall using a VNC, but we don't know how to go about doing either of these? Really would be great if you guys could help. Thanks in advance.

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• installing mod_wsgi giving 403 error

  - by John Smiith

  installing mod_wsgi giving 403 error httpd.conf i added code below WSGIScriptAlias /wsgi "C:/xampp/www/htdocs/wsgi_app/wsgi_handler.py" <Directory "C:/xampp/www/htdocs/wsgi_app/"> AllowOverride None Options None Order deny,allow Allow from all </Directory> wsgi_handler.py status = ‘200 OK’ output = ‘Hello World!’ response_headers = [('Content-type', 'text/plain'), ('Content-Length', str(len(output)))] start_response(status, response_headers) return [output] Note: localhost is my virtual host domain and it is working fine but when i request http://localhost/wsgi/ got 403 error. <VirtualHost *:80> ServerAdmin [email protected] DocumentRoot "C:/xampp/www/htdocs/localhost" ServerName localhost ServerAlias www.localhost ErrorLog "logs/localhost-error.log" CustomLog "logs/localhost-access.log" combined </VirtualHost> Error log [Wed Jul 04 06:01:54 2012] [error] [client 127.0.0.1] File does not exist: C:/xampp/www/htdocs/localhost/favicon.ico [Wed Jul 04 06:01:54 2012] [error] [client 127.0.0.1] client denied by server configuration: C:/xampp/Bin/apache [Wed Jul 04 06:01:58 2012] [error] [client 127.0.0.1] Options ExecCGI is off in this directory: C:/xampp/www/htdocs/wsgi_app/wsgi_handler.py [Wed Jul 04 06:01:58 2012] [error] [client 127.0.0.1] client denied by server configuration: C:/xampp/Bin/apache [Wed Jul 04 06:01:58 2012] [error] [client 127.0.0.1] File does not exist: C:/xampp/www/htdocs/localhost/favicon.ico [Wed Jul 04 06:01:58 2012] [error] [client 127.0.0.1] client denied by server configuration: C:/xampp/Bin/apache Note: My apache is not in c:/xampp/bin/apache it is in c:/xampp/bin/server-apache/

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• Is it possible to use rsync over sftp (without an ssh shell) ?

  - by Tom Feiner

  Rsync over ssh, works great every time. However, trying to rsync to a host which allows only sftp logins, but not ssh logins, provides the following error: rsync -av /source ssh user@remotehost:/target/ protocol version mismatch -- is your shell clean? (see the rsync man page for an explanation) rsync error: protocol incompatibility (code 2) at compat.c(171) [sender=3.0.6] Here's the relevant section from the rsync man page: This message is usually caused by your startup scripts or remote shell facility producing unwanted garbage on the stream that rsync is using for its transport. The way to diagnose this problem is to run your remote shell like this: ssh remotehost /bin/true > out.dat then look at out.dat. If everything is working correctly then out.dat should be a zero length file. If you are getting the above error from rsync then you will probably find that out.dat contains some text or data. Look at the contents and try to work out what is producing it. The most com- mon cause is incorrectly configured shell startup scripts (such as .cshrc or .profile) that contain output statements for non-interactive logins. Trying this on my system produced the following in out.dat: ssh-dummy-shell: Command not allowed. As I thought, the host is not allowing ssh logins. The following link shows that it is possible to accomplish this task using fuse with sshfs - however it is extremely slow, and not fit for production use. Is there any chance of getting rsync sftp to work?

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• How to setup a hyper-v domain with internet access

  - by fynnbob

  First off let me say that I'm not a network admin or server guy, I know very little about that stuff. What I'm trying to do is setup a virtualized domain using hyper-V. Here is the configuration: Physical Server: 4Mb RAM Windows Server 2008 R2 running Hyper-V Virtual Environment: One Domain Controller running Windows Server 2008 R2 One Client running Windows Server 2008 R2 I have been successful in setting up a virtual domain controller and adding a virtual client to that domain controller but I'm stuck at trying to give the virtual Environment Internet access. I can give the client VM Internet access if I remove them from the virtual domain but once I add them back to the virtual domain, Internet access is gone. I've read articles describing many different ways this can be done (using RRAS with NAT, using a wireless connection, etc...) but all of those articles only cover a small piece of the setup and also seem to be geared towards people who know there way around networking and servers which I don't. I'd like to know more but my thing is software development and I have my hands full trying to keep up with everything in that realm. I simply want to setup a virtual domain with Internet access for testing. Can anyone point me to any "for Dummy's" type information on how to setup this type of environment or can anyone provide this kind of step-by-step help. Any help would be very much appreciated.

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• Protect all XML-RPC calls with HTTP basic auth but one

  - by bodom_lx

  I set up a Django project for smartphone serving XML-RPC methods over HTTPS and using basic auth. All XML-RPC methods require username and password. I would like to implement a XML-RPC method to provide registration to the system. Obviously, this method should not require username and password. The following is the Apache conf section responsible for basic auth: <Location /RPC2> AuthType Basic AuthName "Login Required" Require valid-user AuthBasicProvider wsgi WSGIAuthUserScript /path/to/auth.wsgi </Location> This is my auth.wsgi: import os import sys sys.stdout = sys.stderr sys.path.append('/path/to/project') os.environ['DJANGO_SETTINGS_MODULE'] = 'project.settings' from django.contrib.auth.models import User from django import db def check_password(environ, user, password): """ Authenticates apache/mod_wsgi against Django's auth database. """ db.reset_queries() kwargs = {'username': user, 'is_active': True} try: # checks that the username is valid try: user = User.objects.get(**kwargs) except User.DoesNotExist: return None # verifies that the password is valid for the user if user.check_password(password): return True else: return False finally: db.connection.close() There are two dirty ways to achieve my aim with current situation: Have a dummy username/password to be used when trying to register to the system Have a separate Django/XML-RPC application on another URL (ie: /register) that is not protected by basic auth Both of them are very ugly, as I would also like to define a standard protocol to be used for services like mine (it's an open Dynamic Ridesharing Architecture) Is there a way to unprotect a single XML-RPC call (ie. a defined POST request) even if all XML-RPC calls over /RPC2 are protected?

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• Protect all XML-RPC calls with HTTP basic auth but one

  - by bodom_lx

  I set up a Django project for smartphone serving XML-RPC methods over HTTPS and using basic auth. All XML-RPC methods require username and password. I would like to implement a XML-RPC method to provide registration to the system. Obviously, this method should not require username and password. The following is the Apache conf section responsible for basic auth: <Location /RPC2> AuthType Basic AuthName "Login Required" Require valid-user AuthBasicProvider wsgi WSGIAuthUserScript /path/to/auth.wsgi </Location> This is my auth.wsgi: import os import sys sys.stdout = sys.stderr sys.path.append('/path/to/project') os.environ['DJANGO_SETTINGS_MODULE'] = 'project.settings' from django.contrib.auth.models import User from django import db def check_password(environ, user, password): """ Authenticates apache/mod_wsgi against Django's auth database. """ db.reset_queries() kwargs = {'username': user, 'is_active': True} try: # checks that the username is valid try: user = User.objects.get(**kwargs) except User.DoesNotExist: return None # verifies that the password is valid for the user if user.check_password(password): return True else: return False finally: db.connection.close() There are two dirty ways to achieve my aim with current situation: Have a dummy username/password to be used when trying to register to the system Have a separate Django/XML-RPC application on another URL (ie: /register) that is not protected by basic auth Both of them are very ugly, as I would also like to define a standard protocol to be used for services like mine (it's an open Dynamic Ridesharing Architecture) Is there a way to unprotect a single XML-RPC call (ie. a defined POST request) even if all XML-RPC calls over /RPC2 are protected?

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• How to eliminate the domain suffix off my user profile folder when migrating to a new domain?

  - by Jerry Dodge

  We have just upgraded a decade old SBS 2003 server to a brand new SBS 2011 machine. During the process, over 30 other client/server machines on that domain also needed to be dis-joined and re-joined from the old domain to the new one. These domains have different names and is not migrated in any way. It's built from scratch. Since each client machine had very unique user profiles under this domain, we needed to make sure these were all backed up and migrated over to the new domain. For the most part, profiles were migrated with no hassle, just by renaming the user profile folder names. However, in one case, when I log in to my domain account, it creates a profile folder with a suffix of the new domain name. I have replaced all the files in the profile's root which begin with "ntuser" with the files of the new profile. The only problem is half the applications can't find their data, because the folder name is different. How can I change this folder name and maintain this profile on the new domain? I have deleted every user account (except admin), deleted their profiles/folders, removed them from the registry, and made sure every trace of this account was gone. The computer was basically a dummy with only an admin account. Then, I log into the machine under my new domain user account (same username as the old domain). It creates a profile folder with my username plus a suffix extension of the new domain name. The client machine is Windows 7 Ultimate, the old server was SBS 2003, and the new server is SBS 2011.

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• Setting up apache vhost for Icinga

  - by DKNUCKLES

  It's been a while since I've worked with Apache so please be kind - I'm also aware of this question but it hasn't been much help to me. I'd like to set up a simple vHost w/ Apache for my Icinga instance. Icinga is up and running and I can access it from x.x.x.x/icinga, however would like to be able to access it externally as well as internally. I have set up the /etc/hosts file and the following is my barebones vhost statement in httpd.conf <VirtualHost *:80> ServerAdmin [email protected] DocumentRoot /usr/share/icinga ServerName icinga.domain.com ErrorLog logs/icinga.com-error_log CustomLog logs/dummy-host.example.com-access_log common </VirtualHost> I also have the following in my .htaccess file <Directory> Allow From All Satisfy Any </Directory> An entry has been made for the instance in the Windows DNS server on my network, however when I try to access the site by URL I am greeted with Internal Server Error. Reviewing the /var/log/icinga.com-error_log I see the following entry. [Thu Dec 13 16:04:39 2012] [alert] [client 10.0.0.1] /usr/share/icinga/.htaccess: <Directory not allowed here Can someone help me spot the error of my ways?

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• Find which files an apache process is writing to?

  - by Haluk

  We have this apache process which becomes io-bound time to time. Using atop, we can see it is a write operation. Using lsof -p <PID> we can see a list of files open by the httpd process. First we thought "log" files must be the problem. So we turned them off just to test. However write operations still continues. We will continue testing a few other things. For instance we use php session variables a lot. Maybe php session files are getting all the writing. But is there a way to quickly identify files which get written to by the httpd process? This way we can focus our efforts on those files. UPDATE: We used the strace command as suggested. Here are two lines from the output. write(23, "\27\0\0\0\3SET CHARACTER SET utf8", 27) = 27 write(23, "\17\0\0\0\3SET NAMES utf8", 19) = 19 We do not have a mysql process on this server. So is strace also showing what is being written to an ethernet port? UPDATE2: During high io load, the process which consumes most of the write resources gives the following output to strace -e trace=write -p <PID>: --- SIGCHLD (Child exited) @ 0 (0) --- write(9, "!", 1) = 1 write(19, "OPTIONS * HTTP/1.0\r\nUser-Agent: Apache (internal dummy connection)\r\n\r\n", 70) = 70 However I cannot figure out where these are being written to.

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• Configure New Server for .htaccess

  - by Phil T

  I have a new LAMP CENTOS 5 server I am setting up and trying to copy the configuration from another web server I have. I am stuck with what I think is a mod_rewrite problem. If I go to http://old-server.com/any_page_name.php it correctly routes through some handling code in index.php and shows me a graceful "Page Cannot Be Displayed" message. But if I go to http://new-server.com/any_page_name.php I get an ugly Apache 404 Not Found error message. I looked in both httpd.conf files and they both have only one reference to mod_rewrite. LoadModule rewrite_module modules/mod_rewrite.so So it seems like that should be fine. At the bottom of httpd.conf I have the code: <VirtualHost *:80> ServerAdmin [email protected] DocumentRoot /var/www/html ServerName new-server.com ErrorLog logs/new-server.com-error_log CustomLog logs/new-server.com-access_log common </VirtualHost> Then in the root of /var/www/html I have the exact same .htaccess file that looks like this: RewriteEngine on Options +FollowSymlinks RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule . index.php [L] ErrorDocument 404 /page-unavailable/ <files ~ "\.tpl$"> order deny,allow allow from none deny from all </files> So I don't see why the page load at old-server.com works fine while new-server.com doesn't route through index.php like I want it to do. Thanks.

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• How do I set up postfix to store e-mail in a file instead of relaying it?

  - by GomoX

  I want to run a staging copy of a production server on a local environment. The system runs a PHP application, which sends e-mail to customers in various scenarios and I want to make sure no e-mail is ever sent from the staging environment. I can tweak the code so it uses a dummy e-mail sender, but i'd like to run the exact same code as the production environment. I can use a different MTA (Postfix is just what we use in production), but I'd like something that is easy to set up under Debian/Ubuntu :) So, I'd like to set up the local Postfix install to store all e-mail in (one or more) files instead of relaying it. Actually, I don't really care how it's stored as long as it's feasible to check the e-mail that was sent. Even a set up option that tells postfix to keep the e-mail in the mail queue would work (I can purge the queue when I reload the staging server with a copy from production). I know this is possible, I just haven't found any good solution online for what seems like a fairly common need. Thanks!

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• Convert Public Folder to Shared Mailbox

  - by Lilienthal

  Due to a change in company policy, all existing Public Folders (PF) have to be phased out in favour of shared mailboxes. Unfortunately, they don't seem to have any procedures or guidelines for this migration and I can't find much online either. I've already migrated one of our public folders so far as a sort of test case. Because we still use Exchange 2003, we can't create real shared mailboxes as we would in 2007 or 2010 (With New-Mailbox -Shared ... in the Exchange Shell). Instead, I simply created a new account on the AD and assigned it a mailbox. I then set the PF's permissions to read-only to keep it in a consistent state and copied the entire folder to a local PST in Outlook 2010, from which the folder was in turn copied to the new mailbox. Permissions and Folder Visible were set for all users and the migration was successful. While this works, the whole procedure feels very hackish to me and not at all efficient. I'd welcome some input on automating or at least streamlining the process. Additionally, we are unsure of what to do with our mail-enabled Public Folders. Several of these are nested under other PFs, some of which are also mail-enabled. Preserving folder structure is a key requirement and this seems impossible at first glance. I've considered creating dummy accounts for all the email addresses from our mail-enabled PFs and then setting up automated rules to forward messages to a subfolder of the new shared mailboxes, but I am not familiar enough with Exchange to know if this is even possible. Further points of concern are the Calendars and Contact lists in our public folders. I suppose I'll be forced to create new mailboxes for every one of these we have as well, then set up share permissions for their Calendar and Contact items, but would be happy to be proven wrong.

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• New i7 is slower than old Core 2 Duo? Why? (BIOS programming)

  - by DrChase

  I've always wondered why the companies who make BIOS' either have terrible engineering psychologists or none at all. But without wasting your time further with random speculative questions, my real question is as follows: Why does my new computer run slower than my old computer? Old Computer: Intel Core 2 Duo CPU @ 3.0 Ghz (stock) 4GB OCZ DDR2 800 RAM Wolfdale E8400 mb nVidia GeForce 8600 GT New Computer: Intel Core i7 920 @ ~3.2 Ghz 6 GB OCZ DDR3 1066 RAM EVGA x58 SLI LE motherboard nVidia GeForce GTX 275 Vista x64 Home Premium on both. "Run slower" is defined as: - poorer FPS performance in the same games, applications - takes longer to start up - general desktop usage (checking email, opening up files, running exe's) is noticeably slower At first I thought I must've not set something up in the BIOS or something. But I have no idea how to set anything in the bios except for "Dummy O.C.", which brought me to ~3.2 Ghz. But beyond that I have no idea. I've been reading stuff about "ram timing" and voltages and the like but I really have no idea about that stuff. I'm a psychologist who has a basic understanding in building his own computers, not a computer scientist. Can someone give me some wisdom that might guide me to the reason my new computer is worse than my older one? I'm sorry if this is a bad question, or not appropriate to SO. I'm just pretty frustrated now and you all have helped me in the past so I figured I'd give it a shot. Thanks for your time.

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• Why is my Pre to Postfix code not working?

  - by Anthony Glyadchenko

  For a class assignment, I have to use two stacks in C++ to make an equation to be converted to its left to right equivalent: 2+4*(3+4*8) -- 35*4+2 -- 142 Here is the main code: #include <iostream> #include <cstring> #include "ctStack.h" using namespace std; int main (int argc, char * const argv[]) { string expression = "2+4*2"; ctstack *output = new ctstack(expression.length()); ctstack *stack = new ctstack(expression.length()); bool previousIsANum = false; for(int i = 0; i < expression.length(); i++){ switch (expression[i]){ case '(': previousIsANum = false; stack->cmstackPush(expression[i]); break; case ')': previousIsANum = false; char x; while (x != '('){ stack->cmstackPop(x); output->cmstackPush(x); } break; case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': cout << "A number" << endl; previousIsANum = true; output->cmstackPush(expression[i]); break; case '+': previousIsANum = false; cout << "+" << endl; break; case '-': previousIsANum = false; cout << "-" << endl; break; case '*': previousIsANum = false; cout << "*" << endl; break; case '/': previousIsANum = false; cout << "/" << endl; break; default: break; } } char i = ' '; while (stack->ltopOfStack > 0){ stack->cmstackPop(i); output->cmstackPush(i); cout << i << endl; } return 0; } Here is the stack code (watch out!): #include <cstdio> #include <assert.h> #include <new.h> #include <stdlib.h> #include <iostream> class ctstack { private: long* lpstack ; // the stack itself long ltrue ; // constructor sets to 1 long lfalse ; // constructor sets to 0 // offset to top of the stack long lmaxEleInStack ; // maximum possible elements of stack public: long ltopOfStack ; ctstack ( long lnbrOfEleToAllocInStack ) { // Constructor lfalse = 0 ; // set to zero ltrue = 1 ; // set to one assert ( lnbrOfEleToAllocInStack > 0 ) ; // assure positive argument ltopOfStack = -1 ; // ltopOfStack is really an index lmaxEleInStack = lnbrOfEleToAllocInStack ; // set lmaxEleInStack to max ele lpstack = new long [ lmaxEleInStack ] ; // allocate stack assert ( lpstack ) ; // assure new succeeded } ~ctstack ( ) { // Destructor delete [ ] lpstack ; // Delete the stack itself } ctstack& operator= ( const ctstack& ctoriginStack) { // Assignment if ( this == &ctoriginStack ) // verify x not assigned to x return *this ; if ( this -> lmaxEleInStack < ctoriginStack . lmaxEleInStack ) { // if destination stack is smaller than delete [ ] this -> lpstack ; // original stack, delete dest and alloc this -> lpstack = // sufficient memory new long [ ctoriginStack . lmaxEleInStack ] ; assert ( this -> lpstack ) ; // assure new succeeded // reset stack size attribute this -> lmaxEleInStack = ctoriginStack . lmaxEleInStack ; } // copy original to destination stack for ( long i = 0 ; i < ctoriginStack . lmaxEleInStack ; i ++ ) *( this -> lpstack + i ) = *( ctoriginStack . lpstack + i ) ; this -> ltopOfStack = ctoriginStack . ltopOfStack ; // reset stack position attribute return *this ; } long cmstackPush (char lplaceInStack ) { // Push Method if ( ltopOfStack == lmaxEleInStack - 1 ) // stack is full can't add element return lfalse ; ltopOfStack ++ ; // acquire free slot *(lpstack + ltopOfStack ) = lplaceInStack ; // add element return ltrue ; // any number other than zero is true } long cmstackPop (char& lretrievedStackEle ) { // Pop Method if ( ltopOfStack < 0 ) { // stack has no elements lretrievedStackEle = -1 ; // dummy element return lfalse ; } lretrievedStackEle = *( lpstack + ltopOfStack ) ; // stack has element -- return it ltopOfStack -- ; // stack is pop'd return ltrue ; // any number other than zero is true } long cmstackLookAtTop (char& lretrievedStackEle ) { // Pop Method if ( ltopOfStack < 0 ) { // stack has no elements lretrievedStackEle = -1 ; // dummy element return lfalse ; } lretrievedStackEle = *( lpstack + ltopOfStack ) ; // stack has element -- return it return ltrue ; // any number other than zero is true } long cmstackHasAnEle (char& lretrievedTopOfStack ) { // Has element method lretrievedTopOfStack = ltopOfStack ; return ltopOfStack < 0 ? lfalse : ltrue ; // 0 - false stack does not have any ele } // 1 - true stack has at least one element long cmstackMaxNbrOfEle (char& lretrievedMaxStackEle ) { // Maximum element method lretrievedMaxStackEle = lmaxEleInStack ; // return stack size in reference var return ltrue ; // Return Maximum Size of Stack } } ; Thanks, Anthony.

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• Linked List manipulation, issues retrieving data c++

  - by floatfil

  I'm trying to implement some functions to manipulate a linked list. The implementation is a template typename T and the class is 'List' which includes a 'head' pointer and also a struct: struct Node { // the node in a linked list T* data; // pointer to actual data, operations in T Node* next; // pointer to a Node }; Since it is a template, and 'T' can be any data, how do I go about checking the data of a list to see if it matches the data input into the function? The function is called 'retrieve' and takes two parameters, the data and a pointer: bool retrieve(T target, T*& ptr); // This is the prototype we need to use for the project "bool retrieve : similar to remove, but not removed from list. If there are duplicates in the list, the first one encountered is retrieved. Second parameter is unreliable if return value is false. E.g., " Employee target("duck", "donald"); success = company1.retrieve(target, oneEmployee); if (success) { cout << "Found in list: " << *oneEmployee << endl; } And the function is called like this: company4.retrieve(emp3, oneEmployee) So that when you cout *oneEmployee, you'll get the data of that pointer (in this case the data is of type Employee). (Also, this is assuming all data types have the apropriate overloaded operators) I hope this makes sense so far, but my issue is in comparing the data in the parameter and the data while going through the list. (The data types that we use all include overloads for equality operators, so oneData == twoData is valid) This is what I have so far: template <typename T> bool List<T>::retrieve(T target , T*& ptr) { List<T>::Node* dummyPtr = head; // point dummy pointer to what the list's head points to for(;;) { if (*dummyPtr->data == target) { // EDIT: it now compiles, but it breaks here and I get an Access Violation error. ptr = dummyPtr->data; // set the parameter pointer to the dummy pointer return true; // return true } else { dummyPtr = dummyPtr->next; // else, move to the next data node } } return false; } Here is the implementation for the Employee class: //-------------------------- constructor ----------------------------------- Employee::Employee(string last, string first, int id, int sal) { idNumber = (id >= 0 && id <= MAXID? id : -1); salary = (sal >= 0 ? sal : -1); lastName = last; firstName = first; } //-------------------------- destructor ------------------------------------ // Needed so that memory for strings is properly deallocated Employee::~Employee() { } //---------------------- copy constructor ----------------------------------- Employee::Employee(const Employee& E) { lastName = E.lastName; firstName = E.firstName; idNumber = E.idNumber; salary = E.salary; } //-------------------------- operator= --------------------------------------- Employee& Employee::operator=(const Employee& E) { if (&E != this) { idNumber = E.idNumber; salary = E.salary; lastName = E.lastName; firstName = E.firstName; } return *this; } //----------------------------- setData ------------------------------------ // set data from file bool Employee::setData(ifstream& inFile) { inFile >> lastName >> firstName >> idNumber >> salary; return idNumber >= 0 && idNumber <= MAXID && salary >= 0; } //------------------------------- < ---------------------------------------- // < defined by value of name bool Employee::operator<(const Employee& E) const { return lastName < E.lastName || (lastName == E.lastName && firstName < E.firstName); } //------------------------------- <= ---------------------------------------- // < defined by value of inamedNumber bool Employee::operator<=(const Employee& E) const { return *this < E || *this == E; } //------------------------------- > ---------------------------------------- // > defined by value of name bool Employee::operator>(const Employee& E) const { return lastName > E.lastName || (lastName == E.lastName && firstName > E.firstName); } //------------------------------- >= ---------------------------------------- // < defined by value of name bool Employee::operator>=(const Employee& E) const { return *this > E || *this == E; } //----------------- operator == (equality) ---------------- // if name of calling and passed object are equal, // return true, otherwise false // bool Employee::operator==(const Employee& E) const { return lastName == E.lastName && firstName == E.firstName; } //----------------- operator != (inequality) ---------------- // return opposite value of operator== bool Employee::operator!=(const Employee& E) const { return !(*this == E); } //------------------------------- << --------------------------------------- // display Employee object ostream& operator<<(ostream& output, const Employee& E) { output << setw(4) << E.idNumber << setw(7) << E.salary << " " << E.lastName << " " << E.firstName << endl; return output; } I will include a check for NULL pointer but I just want to get this working and will test it on a list that includes the data I am checking. Thanks to whoever can help and as usual, this is for a course so I don't expect or want the answer, but any tips as to what might be going wrong will help immensely!

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• logparser not matching on a LIKE pattern

  - by user79339

  Hi I seem to have the strangest problem. I am using logparser to search an event log for some text that I know is there (i copied and pasted the string from the event into the sql search string). But the sql LIKE statement is returning a empty results. But other LIKE statments seem to be working file. I have even tried using two '%' symbols in case the shell was trying to replace the search pattern with an environment variable '%%NavigationOccuredEventHandler%%', escaping the % with a \ and with a ' but all these just give me "No valid LIKE mask" error My logparser command - C:\Program Files\Log Parser 2.2LogParser.exe "select * from D:\Temp\07i132ppa1_app.evt where Message like '%NavigationOccuredEventHandler%' " -i:EVT -o:Datagrid The Entry in event log (found using "Select * from D:\Temp\07i132ppa1_app.evt" and doing a copy paste of relevant row) - 'D:\Temp\07i132ppa1_app.evt 5976788 2010-03-09 11:53:23 2010-03-09 11:53:23 2 1 Error event 0 None ICP Timestamp: 9/03/2010 1:53:23 AM Message: Error # 068464030040-07I132PPA1 System.Web.HttpUnhandledException: Exception of type 'System.Web.HttpUnhandledException' was thrown. ---> System.NullReferenceException: Object reference not set to an instance of an object. at ClientRegistration.Controller.ContactDetailsController.NavigationOccuredEventHandler(Object sender, NavigateEventArgs e) at Microsoft.ApplicationBlocks.UIProcess.UIPManager.NavigateEventHandler.Invoke(Object sender, NavigateEventArgs e) at Microsoft.ApplicationBlocks.UIProcess.UIPManager.InvokeEventHandlers(State state) in . . . Truncated for brevity ' output Statistics: Elements processed: 240993 Elements output: 0 Execution time: 59.47 seconds But if i searched for the pattern '%object reference not set%' it works fine, returns results. I copied and pasted the string into a dummy sql table and ran the sql query there and it works fine. Just doesn't seem to work in logparser. Very baffling. Any help would be much appreciated

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• FaultException<T>() exception thrown by the service is not caught by the client catch(FaultException

  - by Ashish Gupta

  Ok, I know I am missing something here. I have the following operation contract: public double DivideByZero(int x, int y) { if (y == 0) { throw new FaultException<ArgumentException> (new ArgumentException("Just some dummy exception") ,new FaultReason("some very bogus reason"), new FaultCode("007")); } return x / y; } And following is taken from the client:- Console.WriteLine("Enter the x value"); string x = Console.ReadLine(); Console.WriteLine("Enter the Y value"); string y = Console.ReadLine(); try { double val = client.DivideByZero(Convert.ToInt32(x), Convert.ToInt32(y)); Console.WriteLine("The result is " + val.ToString()); } catch(FaultException<ArgumentException> exp) { Console.WriteLine("An ArgumentException was thrown by the service "+ exp.ToString()); } catch (Exception exp) { Console.WriteLine(exp.ToString()); } In the above case catch(FaultException exp) (the first catch block with ArgumentException in the client code) block does not get executed. However, when I remove ArgumentException to have catch(FaultException exp), the same catch block gets executed. I am not sure about this as I am throwing FaultException from my operation contract. Am I missing anything here. Appreciate your help, Ashish

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• how does scrolling in android listview work?

  - by gartenkralleb

  hi, i have an android-app with a listview in an activity. the listview has, if i call it so, three data states. no data loaded from inet - only one dummy item is visible, saying that data is loading data is loaded and shown in list one listitem is clicked and now shows more information for this listitem (so it is increased in its height) on every state change (1 - 2, 2 - 3) i call notifyDataSetChanged() on this ListAdapater. this causes the listview to scroll down to the last item. this is ugly in the first transition and even more ugly in the second because the clicked list item is now out of focus. as i can see, this happens with a google g1 with android 1.6. a htc touch with the same sdk acts like desired (i try to figure it out with some more devices). to avoid this i tried to read out getScrollY() and set this value back. but this returns 0. the reason for this return value i already found on stackoverflow in other qutestions. does anyone else comes along with my problem so far? why does the listview scrolls to the last item? it was mentioned, that listview does keep track on the scroll position. but it seems that it does not in my case. or may i call the wrong refresh method? is notifyDataSetChanged the correct one?

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• Model validation with enumerable properties in Asp.net MVC2 RTM

  - by Robert Koritnik

  I'm using DataAnnotations attributes to validate my model objects. My model class looks similar to this: public class MyModel { [Required] public string Title { get; set; } [Required] public List<User> Editors { get; set; } } public class User { public int Id { get; set; } [Required] public string FullName { get; set; } [Required] [DataType(DataType.Email)] public string Email { get; set; } } My controller action looks like: public ActionResult NewItem(MyModel data) { //... } User is presented with a view that has a form with: a text box with dummy name where users enter user's names. For each user they enter, there's a client script coupled with ajax that creates an <input type="hidden" name="data.Editors[0].Id" value="userId" /> for each user entered (enumeration index is therefore not always 0 as written here), so default model binder is able to consume and bind the form without any problems. a text box where users enter the title Since I'm using Asp.net MVC 2 RTM which does model validation instead of input validation I don't know how to avoid validation errors. The thing is I have to use BindAttribute on my controller action. I would have to either provide a white or a black list of properties. It's always a better practice to provide a white list. It's also more future proof. The problem My form works fine, but I get validation errors about user's FullName and Email properties since they are not provided. I also shouldn't feed them to the client (via ajax when user enters user data), because email is personal contact data and is not shared between users. If there was just a single user reference on MyModel I would write [Bind(Include = "Title, Editor.Id")] But I have an enumeration of them. How do I provide Bind white list to work with my model?

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• Combobox with collection view itemssource does not update selection box item on changes to the Model

  - by Vinit Sankhe

  Hello, Sorry for the earlier lengthy post. Here is my concise (!) description. I bind a collection view to a combobox as a itemsSource and also bind its selectedvalue with a property from my view model. I must keep IsSynchronizedWithCurrentItem="False". I change the source list ofr the view and then refresh the view. The changed (added, removed, edited) items appear correctly in the item list of the combo. But problem is with the selected item. When I change its property which is also the displaymember path of the combo, the changed property value does not reflect back on the selecton box of the combo. If you open the combo dropdown it appears correctly on the item list but not on the selection box. Now if I change the combobox tag to Listbox in my XAML (keeping all attributes as it is) then when selected item's displaymember property value is updated, the changes reflect back on the selected item of the list box . Why this issue? Just FYI: My View Model has properties EmployeeCollectionView and SelectedEmployeeId which are bound to combo as ItemsSource and SelectedValue resp. This VM implements the INotifyPropertyChanged interface. My core employee class (list of which is the source for the EmployeeCollectionView) is simply a Model class without INotifyPropertyChanged. DisplayMemberPath is "Name" property of employee Model class. I change this by some means and expect the combo selection box to update the value. I tried refreshing ther SelectedEmployeeId by setting it 0 (where it correctly selects the dummy "-- Select All --" employee entry from itemsSource) and old selected value back. But no use. The old value takes me back to the old label. Items collection has latest entry though. When I make combobox's IsEditable=True before the view's refresh and after refresh I make IsEditable=False then the things work out correctly! But this is a patch and is unnecessary. Thx Vinit Sankhe

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• Table element in CSS table-cell offsets other table-cell contents

  - by Matt Joiner

  The following table element in the "center" div causes the contents in the "left" divs to be offset by several pixels from the top (8 in my browser). Adding some text prior to the table removes this offset. Why? How do I stop this from happening without requiring a "dummy" line of text before my table? <html> <head> <style type="text/css"> #left { display: table-cell; background-color: blue; } #menu { background-color: green; } #center { background-color: red; display: table-cell; } </style> <body> <div id="left"> <div id="menu"> Menu 1<br> Menu 2<br> </div> </div> <div id="center"> <table><tr><td>This is the main contents.</tr></td></table> </div> <div id="left"> <div id="menu"> Menu 1<br> Menu 2<br> </div> </div> </body> </html>

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• Using Fancybox with Google Static Maps

  - by Levi Hackwith

  Setup I have multiple links on a page with the class location_link Each Links rel attribute is equal to a city state combo (i.e.,Omaha, NE) Once the page is loaded, a JavaScript function loops through all of the location_link items and binds a click event to them using jQuery. This click event fires a call to the Fancybox constructor that is supposed to show a Google Map of the location that link is associated with The Problem: Whenever I click on one of the "location links", I get the following error message: The requested content cannot be loaded. Please try again later. Code I've Already Written: function setUpLocationLinks() { locationLinks = $("a.location_link"); locationLinks.click( function() { var me = $(this); console.log(me.attr("href")); $.fancybox( { "showCloseButton" : true, "hideOnContentClick" : true, "titlePosition" : "inside", "title" : me.attr("rel"), "type" : "image" } ) return false; } ); } Research I've Already Done: The Google Static Map API no longer requires an API Key. The following is from the Google Static Maps API Page Note: The Google Static Maps API no longer requires a Maps API key! (Google Maps API Premier customers should instead sign their URLs using a new cryptographic key which will be sent to you. See the Premier documentation for more information.) The The Image URL I'm using does resolve and pulls back the data I need When I put the above mentioned URL into a standard <img> tag, the map shows up just fine. I'd like to pull this off without having to create some sort of dummy <img> tag that I'm constantly switching the src attribute out of. Hopefully, you'll find this information helpful. Please let me know if you have any other questions.

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• Zend Studio Debugger returns Application Error

  - by Keyne

  When I run debug for my public/index.php I got an application error as output. I've seen that it occurs at this line: foreach($feed->findFeedEntries($entriesLimit) as $entry) If I put a breakpoint before this, all works as expected, I mean, the error is after the line above. If I remove findFeedEntries() method, I can perform debugging without erros. To clarify, this method is in my row object as described bellow: This is the error <?php class Model_DbTable_FeedEntries extends Zf_Db_Table { public function fetchNewEntries($feed_id) { $Feeds = new Model_DbTable_Feeds(); $Feed = $Feeds->getById($feed_id); // ERROR IS HERE! The colum doesn't exists! // And this is only on zend-debugger!!! var_dump($Feed->link) // ... } } I'm completely lost about what's happening, once my application has no errors, the problem is with zend-debugger. The error is: An error occurred Application error Exception information: Message: Specified column "link" is not in the row Stack trace: #0 C:\Program Files\xampp\htdocs\desenvolvimentistas\application\models\DbTable\FeedEntries.php(75): Zend_Db_Table_Row_Abstract->__get('link') #1 C:\Program Files\xampp\htdocs\desenvolvimentistas\application\models\DbTable\FeedEntries.php(50): Model_DbTable_FeedEntries->fetchNewEntries('1') #2 C:\Program Files\xampp\htdocs\desenvolvimentistas\application\models\DbTable\Row\Feed.php(15): Model_DbTable_FeedEntries->getAllByFeedId('1', 1) #3 C:\Program Files\xampp\htdocs\desenvolvimentistas\application\modules\default\controllers\IndexController.php(41): Model_DbTable_Row_Feed->findFeedEntries(1) #4 C:\Program Files\xampp\htdocs\ZendFramework-1.10.0-minimal\library\Zend\Controller\Action.php(513): IndexController->indexAction() #5 C:\Program Files\xampp\htdocs\ZendFramework-1.10.0-minimal\library\Zend\Controller\Dispatcher\Standard.php(289): Zend_Controller_Action->dispatch('indexAction') #6 C:\Program Files\xampp\htdocs\ZendFramework-1.10.0-minimal\library\Zend\Controller\Front.php(954): Zend_Controller_Dispatcher_Standard->dispatch(Object(Zend_Controller_Request_Http), Object(Zend_Controller_Response_Http)) #7 C:\Program Files\xampp\htdocs\ZendFramework-1.10.0-minimal\library\Zend\Application\Bootstrap\Bootstrap.php(97): Zend_Controller_Front->dispatch() #8 C:\Program Files\xampp\htdocs\ZendFramework-1.10.0-minimal\library\Zend\Application.php(366): Zend_Application_Bootstrap_Bootstrap->run() #9 C:\Program Files\xampp\htdocs\desenvolvimentistas\public\index.php(54): Zend_Application->run() #10 C:\Users\RAPOSO\AppData\Local\Temp\dummy.php(1): include('C:\Program File...') #11 {main} I've notice that when I get the row object my colums names are not right. Instead of have "title", "link", ... I have "feeds", "desenvolvimentistas" (projectname), and so on...

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• What's slowing for loops/assignment vs. C?

  - by Lee

  I have a collection of PHP scripts that are extremely CPU intensive, juggling millions of calculations across hundreds of simultaneous users. I'm trying to find a way to speed up the internals of PHP variable assignment, and looping sequences vs C. Although PHP is obviously loosely typed, is there any way/extension to specifically assign type (assign, not cast, which seems even more expensive) in a C-style fashion? Here's what I mean. This is some dummy code in C: #include <stdio.h> int main() { unsigned long add=0; for(unsigned long x=0;x<100000000;x++) { add = x*59328409238; } printf("x is %ld\n",add); } Pretty self-explanatory -- it loops 100 million times, multiples each iteration by an arbitrary number of some 59 billion, assigns it to a variable and prints it out. On my Macbook, compiling it and running it produced: lees-macbook-pro:Desktop lee$ time ./test2 x is 5932840864471590762 real 0m0.266s user 0m0.253s sys 0m0.002s Pretty darn fast! A similar script in PHP 5.3 CLI... <?php for($i=0;$i<100000000;$i++){ $a=$i*59328409238; } echo $a."\n"; ?> ... produced: lees-macbook-pro:Desktop lee$ time /Applications/XAMPP/xamppfiles/bin/php test3.php 5.93284086447E+18 real 0m22.837s user 0m22.110s sys 0m0.078s Over 22 seconds vs 0.2! I realize PHP is doing a heck of a lot more behind the scenes than this simple C program - but is there any way to make the PHP internals to behave more 'natively' on primitive types and loops?

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