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• Can you clear jquery ajax cache?

  - by chobo2

  Hi I am wondering is it possible to clear the cache from a particular ajax method? Say if I have this $.ajax({ url: "test.html", cache: true, success: function(html){ $("#results").append(html); } }); Now 99% of the time a cached result can be used since it should always be same content. However if a user updates this content it of course changes. If it is cached and it would still show the old content. So it would be cool if I could pick out this cache for this method and clear it and all other cached stuff would stay. Can this be done?

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• samsung HMX-H100P camcorder and video encoding with mencoder

  - by jskg

  Hi everyone, my background is totally not related to video stuff so pardon my newbie style. I own a samsung HMX-H100P camcorder and I'm trying to encode videos to be uploaded to Youtube and Vimeo. First problem: videos generated by the camera with no processing appear like this: http://www.youtube.com/watch?v=AANbl_DTuzE when I play them with Totem(Linux) or VideoLan. Second problem: When I try to encode the videos produced by the camera using mencoder I get the video at the resolution I chose but those ugly lines and lagging are still present. Here's the command I use: mencoder $inputFile -aspect 16:9 -of lavf -lavfopts format=psp -oac lavc -ovc lavc -lavcopts aglobal=1:vglobal=1:coder=0:vcodec=libx264:acodec=libfaac:vbitrate=4500:abitrate=128 -vf scale=1280:720 -ofps 25000/1001 -o $outputFile Any ideas? Thanks in advance

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• ANTLR parser hanging at proxy.handshake call

  - by Peter Boughton

  I am attempting to get a basic ECMAScript parser working, and found a complete ANTLR grammar for ECMAScript 3, which appears to compile ok and produces the appropriate Lexer/Parser/Walker Java files. (Running inside ANTLR IDE plugin for Eclipse 3.5) However, when actually trying to use it with some simple test code (following guide on ANTLR wiki), it just hangs when trying to create the parser: CharStream MyChars = new ANTLRFileStream(FileName); // FileName is valid ES3Lexer MyLexer = new ES3Lexer(MyChars); CommonTokenStream MyTokens = new CommonTokenStream(MyLexer); MyTokens.setTokenSource(MyLexer); ES3Parser MyParser = new ES3Parser( MyTokens ); // hangs here ES3Parser.program_return MyReturn = MyParser.program(); I've tracked down the problem to inside the ES3Parser constructor, where it's calling the function proxy.handshake() - before this line I can successfully do System.out.println("text") but after it I get nothing. So, how do I go about finding out why it's hanging, and stopping it - or even just bypassing this section (can/should I disable debugging?) - so long as that lets it work and allows me to get on with doing useful stuff.

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• Can't ping devices by IP address for devices allocated IPs by DHCP

  - by GiddyUpHorsey

  I have a home network with a Trendnet wireless router and a Windows Domain. The Domain Controller/DNS server is a Windows 2000 Server and is configured to forward queries to DNS servers provided by the ISP. The router provides DHCP and is configured with the Windows 2000 Server as the DNS server. The network has been set up for a couple of years and usually works fine. When I connect iPhones to the network over WiFi, the router can ping the iPhones through its browser based admin interface, but Windows machines that are part of the Windows Domain cannot. A laptop was connected to the network over WiFi that wasn't joined to the domain and it could see the iPhones. The router UI shows that the laptop has a reserved IP allocated via DHCP. All machines either have a static or DHCP allocated IP on the 192.168.0.* subnet. Router - 192.168.0.1 - Static - Wired Windows Domain Controller - 192.168.0.8 - Static - Virtual Windows 7 Workstation - 192.168.0.200 - DHCP Auto - Wired VMWare ESXi Host - 192.168.0.201 - Static? - Wired iPhone 1 - 192.168.0.202 - DHCP Auto - WiFi iPhone 2 - 192.168.0.203 - DHCP Auto - WiFi Windows Vista Laptop - 192.168.0.204 - DHCP Reserved - WiFi Using the Windows 7 machine (200), I try to ping each machine and the only DHCP machine that responds is itself. The other DHCP machines fail with Reply from 192.168.0.200: Destination host unreachable.. Using nslookup fails with *** domain.controller.name can't find 192.168.0.203: Non-existent domain. Using the Windows 2000 Domain Controller (8), I try to ping each machine and the only DHCP machine that responds is the Windows 7 machine (200). Pinging the other DHCP machines fails with Request timed out.. Using nslookup also fails with *** domain.controller.name can't find 192.168.0.203: Non-existent domain. Using the iPhone 2 (203), I try to ping (Network Ping Lite) the machines with static IP addresses and that works fine. When I try to ping the Windows 7 machine (200) it is unable to get a response. How do I configure the DNS server/Windows Domain/Router properly so that the Windows Domain machines can see the IPs allocated via DHCP?

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• How can I replace email alerts for system events with something more scalable?

  - by Dave Forgac

  I have a number of systems and services that send email alerts when some sort of event takes place. This works fine for a small number of systems but as the number of alerts grows the important message become less visible among the informational notices. Email filtering can only be effective to a point. What sort of solution can I use in place of emails that will allow me to send arbitrary alerts from various services and that will scale easily as the number of services grows?

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• assembler - understanding of some lines

  - by user1571682

  with the help of some tutorials, i wrote a little piece of code, to display me a string, after booting from my floppy. my problem is now, that dont understand some lines, were i hope u can help me, or just tell me, if im right. code: mov ax, 07C0h add ax, 288 ; (512 + 4096) / 16 = 288 mov ss, ax mov sp, 4096 mov ax, 07C0h mov ds, ax line: start the program @ the adress 07C0h (could i change this?) Add space for 288 paragraphs to ax ? Space of 4096 bytes for my program (to store variables and stuff?) Go to the start adress ? thanks for your help.

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• Problem creating site using Microsoft Visual Web Developer Express 2008

  - by Peter

  Hi, this is a very newbie question, sorry! I need to create an aspx website based con C# and am calling some webservices based on some DLL's I already have. Beforem purchasing Visual Studio, I decided to try Microsoft Visual Web Developer Express (is this ok?) creating a Web Application ASP.NET based on Visual C#. I created the form to enter the data which is submitted when clicking the process button. At this point I need to call stuff from the DLL, which I have added in the Solution Explorer via Add Reference, selecting the DLL from the COM list. But whenever I run the project, I always get the error "the type or namespace xxx cannot be found - maybe a using directive or assembler directive is missing" when trying to create the object. What is my stupid mistake? Thanks!

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• Using a database class in my user class

  - by Josh

  In my project I have a database class that I use to handle all the MySQL stuff. It connects to a database, runs queries, catches errors and closes the connection. Now I need to create a members area on my site, and I was going to build a users class that would handle registration, logging in, password/username changes/resets and logging out. In this users class I need to use MySQL for obvious reasons... which is what my database class was made for. But I'm confused as to how I would use my database class in my users class. Would I want to create a new database object for my user class and then have it close whenever a method in that class is finished? Or do I somehow make a 'global' database class that can be used throughout my entire script (if this is the case I need help with that, no idea what to do there.) Thanks for any feedback you can give me.

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• PHP: gethostbyname() suddenly no longer resolves names to IPs when run in Apache

  - by hurikhan77

  One of our older legacy servers which gets no further updates or reconfigurations suddenly stopped resolving hostnames to IPs when PHP is executed within Apache. However, it still works fine when executed from the CLI. From the RSS caches last modification time, I deduce that it stopped working on around Mar, 28th. To reproduce the problem, I created a script using fsockopen() and it said "connection failed (errno 2)". I further reduced the problem to being related with a failed name resolution: <?php $addr = gethostbyname("twitter.com"); echo "ADDR($addr)"; ?> When I run this through Apache, the output is ADDR(twitter.com), which is wrong. When I run this from the CLI, the output is ADDR(aaa.bbb.ccc.ddd) with varying IP addresses, as expected. Nothing on the server setup has changed. CLI and Apache module share the same php.ini. PHP is version v4.4.9 with Zend Optimizer v2.5.10. Apache is v1.3.31. I know the versions are old. But since nothing has been changed, a solution like "try to upgrade versions first" is no solution as the server's feature set/versioning is frozen and will be replaced soon. Still we need a solution. If I run dig through the script, it works in both environments (mod_php and CLI) but this is more than an ugly hack as it would involve many edits and testing throughout the whole script base which is also undesired as the PHP application on the server is frozen, too, and only receives security updates. It will be replaced by a complete rewrite (on the new server). But as the rewrite will take some time and successive replace parts of the legacy application, we need a fix for the resolver problem. I already googled a bit and while the problem is known, many did not find a fix. The fix to raise memory limits did not work. Restarts did not work. The resolver in mod_php just did stop working for no apparent reason. :-(

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• What is reverse DNS?

  - by Pitto

  *.in-addr.arpa domains: lot of requests in my OpenDNS account. I know this should be normal and it's about reverse DNS. I've been reading here and there but still I can't really get how it works and why I get so much requests (higher number than www.google.com). I'd just need someone that, like Einstein suggested, could explain to me what this reverse dns is used for like he would explain it to his grandmother :) Thanks a lot!

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• Read only bind-mount?

  - by depesz

  I use mount -o bind to mount directories inside chroots, which works really well. The problem is that I'd like some of these bind-mounted directories to be read only in chroot. Is it possible? If not - any other way to achieve it? I was thinking about using NFS for localhost mounts, but it looks like overkill.

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• NetDom at Startup

  - by m4tty

  Hi, We have a Bat file running on a pc login to migrate a pc from Domain A to Domain B this works brill but. @ECHO OFF cmd /c netdom move /domain:B %computername% /OU:"OU=Computers" /ud:B Admin /pd:***** /uo:%computername%\administrator /po:***** /uf:A admin /pf:****** We need this to be able to run at PC startup rather than user login. It looks like it runs but doesnt actually do anything. Any help would be brilliant. Thanks

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• How to import modules that are used in both the main code and a module correctly?

  - by Deniz

  Let's assume I have a main script, main.py, that imports another python file with 'import coolfunctions' and another: 'import chores' Now, suppose coolfunctions also uses stuff from chores, hence I declare 'import chores' inside coolfunctions. Since both main.py, and coolfunctions import chores ~ is this redundant? Is there any other way of doing this? Am I doing it correctly? I'm confused about how python projects should be structured in general. I have a "conf.py" file, that I import for a bunch of variables ~ is this a module or not? I load this conf file in multiple places as well.

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• WPF: Sort of inconsistence in the visual appearence of WPF controls derived by Selector class

  - by msfanboy

  Hello, focused items == selected items but selected items != focused items. Have you ever wondered about that? Do you specially style the backcolor of a focused/selected item ? I ask this question because a user has an enabled button because some customer items are selected. The user is wondering now "why the heck can I delete this customers (button is enabled...) when I have just clicked on the orders control selecting some orders ready to delete (button is enabled too). The thing is the selected customer items are nearly looking grayed out in the default style... Well its sort of inconsistence to the user NOT to the programmer because WE know the behavior. Do you cope with stuff like that?

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• Umbraco or ASP.NET MVC

  - by StupidBoy

  I'm about to create a site that will act as public front site of company that sells furniture, but after user log in, he'll see much more options. Internal news, files to download, customized pricings, newsletters, etc. - stuff for wholesale clients. I want to make it quickly and maintain/extend it easily. I'm asp.net developer and while I could write it in python, php, whatever else (I know these too), I still prefer asp.net. I was thinking about umbraco, since it gives a real productivity boost and that I familiar with it ( and extending it). I've had a short romance with ASP.NET MVC, so I know what it's all about, but I would still spend some time learning it (but what a fun!). Of course, there's also webforms, but that's my last choice here. Last but not least to mention is the SEO. The question is, have anyone of you had similiar dilemma and what was your final choice?

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• Streaming Netflix through Wifi kills all other devices

  - by maleki

  I have a "Belkin N150" Router. My current setup is wired connection to my personal tv and xbox with wireless going to the Wii and Bedroom laptop. Anytime I try streaming Netflix Instant Queue on the Wii, every other device has problems. The Wii works fine but everything else's connection is destroyed. Streaming through the Xbox doesn't create any issues for other devices. What kind of issue is occurring and how can I fix it?

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• WPF Application Hang

  - by Karim

  Hi, I'm using Windows 7 Professional (x64) and having installed .NET 4.0 RTM on my machine. Since 2 days I'm noticing that every WPF application that I'm trying to run hangs and becomes non responsive (a not responding text is appended to it's title bar) and it's painted white. There is no info regarding any exception, no error message. Nothing. Even the Event Log shows that there was "application hang" event (code 1002) and nothing more. This problem is for everything that is written in WPF, even for products like NHibernate Profiler and other stuff that I was using on a regular basis without any issues. Tried to reinstall .NET 4.0 and nothing changed. Any ideas why this might be happening?

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• ASP.Net security using Operations Based Security

  - by Josh

  All the security stuff I have worked with in the past in ASP.Net for the most part has been role based. This is easy enough to implement and ASP.Net is geared for this type of security model. However, I am looking for something a little more fine grained than simple role based security. Essentially I want to be able to write code like this: if(SecurityService.CanPerformOperation("SomeUpdateOperation")){ // perform some update logic here } I would also need row level security access like this: if(SecurityService.CanPerformOperation("SomeViewOperation", SomeEntityIdentifier)){ // Allow user to see specific data } Again, fine grained access control. Is there anything like this already built? Some framework that I can drop into ASP.Net and start using, or am I going to have to build this myself?

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• few question about linux [closed]

  - by oneat

  Can I execute assembly files with all privileges (using ports)? Does the newest DSL (damn small Linux) works with winXP. (makes bootloader for it) And does it support downloading applications automatically ?

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• In SQL Server can I insert multiple nodes into XML from a table?

  - by tpower

  I want to generate some XML in a stored procedure based on data in a table. The following insert allows me to add many nodes but they have to be hard-coded or use variables (sql:variable): SET @MyXml.modify(' insert <myNode> {sql:variable("@MyVariable")} </myNode> into (/root[1]) ') So I could loop through each record in my table, put the values I need into variables and execute the above statement. But is there a way I can do this by just combining with a select statement and avoiding the loop? Edit I have used SELECT FOR XML to do similar stuff before but I always find it hard to read when working with a hierarchy of data from multiple tables. I was hoping there would be something using the modify where the XML generated is more explicit and more controllable.

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• Can django's auth_user.username be varchar(75)?

  - by perrierism

  Django's auth_user.username field is 30 characters. That means you can't have auth_user.username store an email address. If you want to have users authenticate based on their email address it would seem you have to do some wonky stuff like writing your own authentication backend which authenticates based on (email, password) instead of (username, password) and furthermore, figuring out what you're going to put in the username field since it is required and it is a primary key. Do you put a hash in there, do you try to put the id in there... bleh! Why should you have to write all this code and consider edge cases simply because username is too small for your (farily common) purposes? Is there anything wrong with running alter table on auth_user to make username be varchar(75) so it can fit an email? What does that break if anything?

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• Need to parse HTML document for links-- use a library like html5lib or something else?

  - by Luinithil

  I'm a very newbie webpage builder, currently working on creating a website that needs to change link colours according to the destination page. The links will be sorted into different classes (e.g. good, bad, neutral) by certain user input criteria-- e.g. links with content the user would find of interest is colored blue, stuff that the user (presumably) doesn't want to see is colored as normal text, etc. I reckon I need a way to parse the webpage for links to the content (stored in MySQL database), change the colors for all the links on the page (so I need to be able to change the link classes in the HTML as well) before outputting the adapted page to the user. I read that regex is not a good way to find those links-- so should I use a library, and if so, is html5lib good for what I'm doing?

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• Zyxel P-320W: How to connect to my web server using public IP

  - by hvtuananh

  My company's router is Zyxel P-320W and I have a public static IP. I registered a few domains name and point to this IP address. I already setup Virtual Hosts and configured port-forwarding to my internal server and it works well. I can connect to all domains from outside The problem is I cannot connect to my domains from inside One workaround way is modify hosts file to add internal IP for those domains, but my company have many computers and I don't want to setup all PC manually

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• Zyxel P-320W: How to connect to my web server using public IP

  - by hvtuananh

  My company's router is Zyxel P-320W and I have a public static IP. I registered a few domains name and point to this IP address. I already setup Virtual Hosts and configured port-forwarding to my internal server and it works well. I can connect to all domains from outside The problem is I cannot connect to my domains from inside One workaround way is modify hosts file to add internal IP for those domains, but my company have many computers and I don't want to setup all PC manually

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• WPF: Get Property that a control is Bound to in code behind

  - by Richard

  Hi all, I am trying to find a way to get the Property to which a control is bound (in c#). If I have the following: <dxe:ComboBoxEdit DisplayMember="Name" ItemsSource="{Binding Path=NameOptions, Mode=OneTime}" SelectedItem="{Binding Path=Name, UpdateSourceTrigger=PropertyChanged}" /> I am now trying to get the location to which the SelectedItem is bound to, i.e. the result should be "Name". Then in code I need to do some stuff with that ViewModel Property. Issue is that I can't just hard code this as it is a generic method that needs to work with each control on the form. Thanks, Richard

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