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  • Performing an operation based on values within an array

    - by James W.
    I'm trying to figure out how to do operations based on values in an array. The values are taken from a string and inserted into the array e.g num = TextBox.Text.Split(' '); results = Convert.ToDouble(num[0]); for (int i = 0; i < num.Length - 1; i++) { if (num[i] == "+") { results += Convert.ToDouble(num[i++]); } ... } So based on this, let's say the TextBox string value was "1 + 2". So the array would be: ------------- | 1 | + | 2 | ------------- 0 1 2 (indexes) The part I'm having trouble with is Convert.ToDouble(num[i++]).. I've tried num[1] + 1, num[i + 1], etc I'm trying to figure out how to get it to perform the operation based on the first value and the value in the index after the operator. Which is the correct way to do something like this?

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  • How to avoid oscillation by async event based systems?

    - by inf3rno
    Imagine a system where there are data sources which need to be kept in sync. A simple example is model - view data binding by MVC. Now I intend to describe these kind of systems with data sources and hubs. Data sources are publishing and subscribing for events and hubs are relaying events to data sources. By handling an event a data source will change it state described in the event. By publishing an event the data source puts its current state to the event, so other data sources can use that information to change their state accordingly. The only problem with this system, that events can be reflected from the hub or from the other data sources, and that can put the system into an infinite oscillation (by async or infinite loop by sync). For example A -- data source B -- data source H -- hub A -> H -> A -- reflection from the hub A -> H -> B -> H -> A -- reflection from another data source By sync it is relatively easy to solve this issue. You can compare the current state with the event, and if they are equal, you don't change the state and raise the same event again. By async I could not find a solution yet. The state comparison does not work by async event handling because there is eventual consistency, and new events can be published in an inconsistent state causing the same oscillation. For example: A(*->x) -> H -> B(y->x) -- can go parallel with B(*->y) -> H -> A(x->y) -- so first A changes to x state while B changes to y state -- then B changes to x state while A changes to y state -- and so on for eternity... What do you think is there an algorithm to solve this problem? If there is a solution, is it possible to extend it to prevent oscillation caused by multiple hubs, multiple different events, etc... ? update: I don't think I can make this work without a lot of effort. I think this problem is just the same as we have by syncing multiple databases in a distributed system. So I think what I really need is constraints if I want to prevent this problem in an automatic way. What constraints do you suggest?

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  • Event 4098, 0x80070533 Logon failure: account currently disabled?

    - by Josh King
    Having started to upgrade our PCs to Windows 7 we have noticed that we are getting group policy warnings in Event Viewer such as: "The user 'Word.qat' preference item in the 'a_Office2007_Users {A084A37B-6D4C-41C0-8AF7-B891B87FC53B}' Group Policy object did not apply because it failed with error code '0x80070533 Logon failure: account currently disabled.' This error was suppressed." 15 of these warnings appear every two hours on every Windows 7 PC, most of which are to do with core office applications and two are for plug-ins to out document management system. These warnings aren't afecting the users, but it would be nice to track down the source of them before we rollout Win7 to the rest of the Organisation. Any ideas as to where the login issue could be comming from (All users are connecting to the domain and proxy, etc fine)?

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  • Photoshop batch image processing based on EXIF?

    - by davr
    I use Photoshop to batch convert my RAW files to JPG. I was wondering if there was a way to make it take different actions based on EXIF? With my particular camera lens, if I open it all the way to F1.7 there is noticeable vignetting, but stopping down smaller doesn't have that problem. What I'd like to do is have Photoshop batch process all my RAW files, and anything that is at F1.7 it should automatically apply vignette correction, but not on the others (applying correction to the others would over-brighten the corners of the image). Is anything like this possible? Should I use some other RAW processing tool instead? FYI they are RW2 files from a Panasonic GF1 camera.

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  • Event 4098, 0x80070533 Logon failure: account currently disabled?

    - by Windos
    Having started to upgrade our PCs to Windows 7 we have noticed that we are getting group policy warnings in Event Viewer such as: "The user 'Word.qat' preference item in the 'a_Office2007_Users {A084A37B-6D4C-41C0-8AF7-B891B87FC53B}' Group Policy object did not apply because it failed with error code '0x80070533 Logon failure: account currently disabled.' This error was suppressed." 15 of these warnings appear every two hours on every Windows 7 PC, most of which are to do with core office applications and two are for plug-ins to out document management system. These warnings aren't afecting the users, but it would be nice to track down the source of them before we rollout Win7 to the rest of the Organisation. Any ideas as to where the login issue could be comming from (All users are connecting to the domain and proxy, etc fine)?

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  • how to multi-boot/upgrade linux from LVM-based partition

    - by kenny-bobby
    i currently have FC3 linux which installed itself on the hard disk using LVM partitioning, so it is basically all one big partition. i would like to try some other distributions and upgrade to something newer, but don't want to lose my current capabilities and data files, and i know nothing or less about LVM. Is it possible (and if so an example would be nice) to install a non-LVM-based distribution on the LVM disk and have multi-boot options? Or do i have to start over new and drop the LVM? My guess is that i should save my /home (data files and .rc files) on a backup device first, then somewhere/somehow create a new partion for installing another distribution. Any LVM experts out there that have tried anything like this--well i sure could use some pointers and advice...

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  • Inexpensive and Open replacement for Cisco Tunnel-based EasyVPN with Cisco VPN 3000 Series

    - by Shoaibi
    I have a scenario when i have to establish peer-to-peer preshared key based VPN to a vendor. This vendor uses Cisco EasyVPN with Cisco VPN 3000 as access concentrator. I check the compatibility of the type of VPN from http://www.cisco.com/en/US/prod/collateral/iosswrel/ps6537/ps6586/ps6635/ps7180/prod_brochure0900aecd80582078.pdf and it appears that it would only work on cisco hardware. I am looking for a less inexpensive and possibly and open replacement to this to save my cost and also recommend to them. I have tried OpenVPN and thinking about vyatta.

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  • SNMP based network discovery (switches), device (ports on switches) power management

    - by SaM
    In a enterprise network, what would be the right way to generate a list of switches (SNMP managed) Is it reasonable to ask the organization to supply a list such as this: Switch name IP Address of switch Location SNMP community strings Or are there standard ways to run discovery scans - UDP broadcasts? After having generated a repository such as the above; given a single switch, how to query it for the list of all devices attached to it? Finally, how to selectively power down/power up ports? (remotely - using SNMP) Platform is going to be .NET based (C#) and the library being used is SharpSNMP

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  • layout analysis of text based pdf without ocr

    - by fastrack
    Before recognizing a pdf, OCR software do document layout analysis to determine which parts are texts, tables or images, as shown in the picture below. ![papercrop]http://cache.gawkerassets.com/assets/images/17/2011/07/papercrop.jpg I want to use some parts of the text while leaving out the others. So having a software marking those zones comes in handy. Papercrop does a decent job, but it has a bug of now showing some of the text in the pdf file. And OCR software can also do layout analysis, marking out "zones" which I can add or delete. But you have to OCR to do that. Since my pdfs are already text based, I don't want to waste so much time OCRing. So my question is, is there any software that automatically mark out those zones and let me manually manipulate them, without having to OCR? Thanks! Waiting for your help.

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  • Event SRV error 2012 in Windows Server 2008 R2

    - by Natkeeran
    Error Warning "Event SRV error 2012 in Windows Server 2008 R2" is being logged with increasing frequency. NIC drivers were updated recently. There are some drops in the switches. This is the error: SRV 2012 While transmitting or receiving data, the server encountered a network error. Occassional errors are expected, but large amounts of these indicate a possible error in your network configuration. The error status code is contained within the returned data (formatted as Words) and may point you towards the problem.

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  • PIN based Login in Windows 8.1 Missing

    - by WiredPrairie
    I installed a fresh copy of Windows 8.1 Pro using Hyper-V, and updated with all updates via Windows Update. It's not domain joined. I cannot however activate a PIN based login for the installation and I'm not sure why. I'm using a Microsoft account to login (not just a local login). I have even manually enabled the feature using group policy (which apparently only should have mattered for a domain joined workstation anyway), rebooted, and it's still not available. As far as I can tell, everything else seems normal and is working as expected. For Sign-in options, I only see Password as a choice:

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  • Performance Alert Writing to event Log but not running program

    - by TooFat
    I followed the instructions here How to create and configure performance alerts in Windows Server 2003 to set up an alert if the available logical disk space on one of my drives goes below a certain number. I selected the option to write to the application event log and select the "run this program" option and put in the path to a script that sends me an email. If I copy the path to the script and run it everything works and I get the email. When I start the alert I can see that the limit I set is being exceeded and the logs are being written to the application log, but the email is never being sent. I have the runas user and pword set to a Domain Admin. If I make the "run this program path" to C:\Windows\System32\calc.exe" it also doesn't start up the calculator. The Performance Logs and alerts services is running as Local Admin with allow to interact with desktop. What am I doing wrong?

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  • web based open source FTP

    - by kwek-kwek
    I need help on looking for a best solution of a web based open source FTP client that has a progress bar, e-mail notifications and easy file sharing with others. I am looking to set up one for our print department, and you send it is really getting expensive. I've look into net2ftp.com but styling it, is a bit pain in the bumbum....Also, Uploadify is also an option but with my lack of PHP knowledge I can't make it to actually do what I want it to do. Let me know if you have buymp into and interesting tool like it.

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  • SSLCipherSuite - disable weak encryption, cbc cipher and md5 based algorithm

    - by John
    A developer recently ran a PCI Scan with TripWire against our LAMP server. They identified several issues and instructed the following to correct the issues: Problem: SSL Server Supports Weak Encryption for SSLv3, TLSv1, Solution: Add the following rule to httpd.conf SSLCipherSuite ALL:!aNULL:!eNULL:!LOW:!EXP:RC4+RSA:+HIGH:+MEDIUM Problem: SSL Server Supports CBC Ciphers for SSLv3, TLSv1 Solution: Disable any cipher suites using CBC ciphers Problem: SSL Server Supports Weak MAC Algorithm for SSLv3, TLSv1 Solution: Disable any cipher suites using MD5 based MAC algorithms I tried searching google for a comprehensive tutorial on how to construct an SSLCipherSuite directive to meet my requirements, but I didn't find anything I could understand. I see examples of SSLCipherSuite directives, but I need an explanation on what each component of the directive does. So even in the directive SSLCipherSuite ALL:!aNULL:!eNULL:!LOW:!EXP:RC4+RSA:+HIGH:+MEDIUM, I dont understand for example what the !LOW means. Can someone either a) tell me the SSLCipherSuite directive that will meet my needs or b) show me a resource that clearly explains each segment of a SSLCipherSuite is and how to construct one?

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  • excel chart dynamic range based on values

    - by andrewk
    I'm trying to create a chart that auto updates itself from a data provided. The range of the chart is always fixed/locked. The issue I'm facing is that when a value for a certain month is 0, I want it to skip to the last non-zero month . Meaning the ranges selected forming the chart should exclude the month with the value zero. Which in most cases is the top month. The image below should clear it up. Is there a way to have the chart range be dynamic based on certain values?

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  • Create a playlist in iTunes based on a hard drive folder

    - by Electrons_Ahoy
    I'd like to be able to base playlists in iTunes on a folder on my hard drive. For example, say I have this directory structure: C:\MP3s\Doctor Who Music C:\MP3s\Star Wars Music Importing all those MP3s into iTunes is really simple - at the bare bones version you can just drag the MP3 folder into the iTunes window and it does the rest. But, having done that, what I'd like to be able to do is point iTunes at each of those directories and have it turn them into their own playlists, so I end up with a Doctor Who Music and a Star Wars Music playlist based on the MP3s locations on the hard drive. Does iTunes have a way to do this, or is there a way to trick it into this with some other program? (I'm on Windows, but I'm sure Mac users would also appreciate answers to this as well.)

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  • activesync not working with forms based authentication

    - by Chad
    I have an Exchange 2003 SP2 single backend server with an SSL cert. I was having trouble getting OMA to work so I found a MS article about making a reg hack and creating a new Exchange-OMA virtual directory. I am able to connect and access content from my mailbox by using secure mail.domainname.com/oma and using my credentials. ActiveSync was not working on a Windows mobile phone or iPhone. I found another article about using Forms Based Authenication and SSL on a single Exchange server environment and the fix was to elliminate FBA and SSL for the Exchange virtual directory. That allows ActiveSync to now work. I have very few mobile users, but they are management, so I need to make ActiveSync work but I would like to get back to using SSL. http://support.microsoft.com/kb/817379 Any ideas about this setup? Thanks.

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  • Apache2 conditional section based on port

    - by Waleed Hamra
    I don't know much about if statements in apache configuration, and I'm wondering if I can have a section of the configuration applied only if the request is received on a certain port. In short, this is about SSL. I have name based virtual hosts, I can make a configuration for port 80, then duplicate it all for port 443, and add the relevant SSL configurations. But this seems redundant. I was wondering if i can have something like: <VirtualHost *:80 *:443> and then I can put: <IfModule mod_ssl.c> SSLEngine on SSLCertificateFile ... SSLCertificateKeyFile ... SSLCACertificateFile ... </IfModule> inside an if statement that checks if connection is on port 443... or is such thing impossible? the server supports SNI, and I don't have any worries from non-SNI compliant browsers.

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  • MAC OS for Intel based PCs

    - by Maven
    I have an Intel dual core PC with 4GB of RAM and Graphics card. For on of my student Assignment I need to install Latest possible MAC OS on my system as a secondary OS. Like on boot it asks me that which OS i want to boot with Win 8.1 or Mac Os.. I searched on the internet and found two conflicting opinion some people said there are few MAC OS Version which can be directly installed on Intel PCs some says there aren't? I am here to get rid of the confusion that is an official latest possible MAC OS version for Intel based PCs? If not what are my options if I want to run MAC OS on my PC. Please not that Virtualization options won’t work for me, it has to be working as full OS not an os inside another.

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  • Qmail: relay only from selected servers based on rDNS

    - by Frank
    I'm looking for a way to disable Qmail relaying for everyone, but allow one certain group of hosts to do so. These hosts all use the same identifying rDNS entry. In Exchange 2003, Postfix, Exim and cPanel this can be achieved pretty easily. However, the only to do this with Qmail is to do this based on IP's. The IP's however tend to change. These changes can occur at any time, and it is impossible to keep all the servers up-to-date to the new IP's. Running a script that resolves the hostname and whitelists them accordingly is my last-resort option, but this is not fool-proof. Does anyone know whether this is possible and if so, how? Thanks!

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  • Rewrite request URI based on Host header in HAProxy

    - by DorinC
    I would like to set up HAProxy to forward HTTP requests to some backend servers but I need it to also rewrite the URI part based on the Host. I've read through the doc but it seems that reqirep isn't suitable for this purpose. Any idea if this is even possible with HAProxy? Here are the details of what I'm trying to accomplish: Requests that come in on: http://www.original-domain.com/ would be balanced between: http://server1/domains/www.original-domain.com/ ... http://serverN/domains/www.original-domain.com/ The proxy should be able to handle this for any number of domains (original-domain.com can be anything, it's not limited to a fixed set of values). For this to work HAProxy would need to rewrite a request like this: GET /original-uri HTTP/1.1 Host: original-domain.com to: GET /domains/original-domain.com/original-uri HTTP/1.1 Host: serverN and forward that request to one of the internal servers.

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  • Debian based OS: Show system notification on clipboard copy/paste events

    - by ifischer
    When working with Linux (Debian based), I often experience problems in relation to the copy paste commands: I copy something with Ctrl+C or by selecting it with the mouse, but when I try to paste it somewhere else, the clipboard is empty and nothing happens - whatever reason caused this. This annoys me, as I have to switch to the source application again and again copy the text. So to really be sure if something was copied into the clipboard I would like it if the window manager (be it Gnome, KDE, etc) would show a Desktop Notification (for example powered by libnotify) as soon as anything is copied into the clipboard, showing the content that has been copied into the clipboard. Is that possible by using one of the many clipboard managers out there (glippy, clipit, ...)? If not, can I write a (DBus?)-hook, which is triggered during copy-to-clipboard-actions, showing the content which is to copy inside the Desktop Notification? (The latter approach would be more interesting, since I'm interested in hooking into system events in general)

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  • Redirect email based on Source IP / Hostname

    - by PostMan
    So, we have a situation where we would like to be able to redirect (ignoring original destination) emails coming through out exchange server (locally sent) to a different email address. The situation is as follows: Testing a new server, this hosts a lot of our custom applications / scheduled tasks (as does the production version of this server). Instead of changing config files / parameters for these applications we'd rather leave them as they are, as we want to be as close to production as possible, however we don't want the emails go to the staff they would normally go to, we'd rather they were sent to a test email address where we are able to confirm the results. The emails look exactly like the production emails (same from / to / cc / bcc) except their source, hence why we'd like to know if the ability to redirect based on hostname exists. Cheers.

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  • Sharepoint Server 2007 generates event log entry every 5 minutes - "The SSP Timer Job Distribution L

    - by Teevus
    I get the following error logged into the Event Log every 5 minutes: The SSP Timer Job Distribution List Import Job was not run. Reason: Logon failure: the user has not been granted the requested logon type at this computer In addition, OWSTimer.exe periodically gets into a state where its consuming almost all the CPU and only killing the process or restarting the Sharepoint services fixes it (although I'm not sure if this is a related or seperate issue). I have tried the following (based on various suggestions floating around the web), all to no avail: iisreset (no affect) Added the Sharepoint and Sharepoint Search service accounts to Log on as a batch job and Log on as a service policies in the Group Policies for the domain. I went into the Local Computer Policy on the Sharepoint server and verified that those policies had actually been applied Verified that the Sharepoint and Sharepoint Search service accounts are both in the WSS_WPG group Verified in dcomcnfg that the WSS_WPG group (and indeed the Sharepoint and Sharepoint search service accounts) has local activation rights for SPSearch. Any more suggestions would be valued. Thanks

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  • Rewrite URL based off of IP on OpenWRT

    - by Scott
    We are running OpenWRT on a WRT54GL. I have been looking for an answer to this, but I can't seem to figure out what to search for, if its possible, or what combination of programs to use. I want to be able to redirect a HTTP request from a WiFi device based off of their MAC address. This should all be transparent to the device. Basically we are trying to redirect any non-registered devices to a website to register the device (at this point, we would push a new config to the router that would allow this MAC address "full access"). Once a device is registered, it will be redirected to a transparent squid proxy server on another machine for caching/blocking certain sites. I looked at tinyproxy - popilo which redirects but I won't have the MAC address to know if its registered or not. Any help (google suggestions, programs, anything!) would be very much appreciated!

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