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• What does "Flush the Firewall" mean?

  - by Qasim

  I know this is a real newbie question but what does it mean when someone says they "flushed the firewall". I got locked out of my server a few times due to the enhanced security configuration I had done and when I contacted my server management company, they said both times that they flushed the firewall and I was allowed back in. I hope "flushing the firewall" doesn't mean they reduced the security settings at all.

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• DNS MX record workaround

  - by onemach

  I use a tk domain name and another web host to host my blog site. I redirect DNS query to xxxhost.[myhost].com and tell my web host my domain name. (since my web host is virtual one) This works OK. But now I want to use an email service provided by third party, which requires adding a MX record to my DNS service. But this cannot be done on my web host management pages. Is there any workaround for this?

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• Lenovo Thinkpad X201 Unwanted Brightness Change

  - by tamberg

  My Lenovo Thinkpad X201 automatically changes display brightness from time to time. The specs do not mention an ambient light sensor. Power management settings are on Presentation (timers off). Any ideas on how to turn this behavior off?

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• accidentally deleted a volume in windows

  - by Buddy Casino

  Hi! I accidentally deleted a volume in windows disk management. Is there an easy way to undo that action? Or do I have to use a file recovery tool? Thanks a lot!

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• SQL server text

  - by Nick P

  I will be taking an independent study class on SQL server management. I will have to configure SQL Server 2008 on a Windows Server 2008 system. I was wondering if anyone could suggest decent text for configuration/administration of SQL Server 2008. The Murach text doesn't look like it will take me far.

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• What do you use RightScale for?

  - by npt

  I'm currently evaluating whether to use RightScale to manage a production environment in EC2. I intend to use Puppet for configuration management either way (the declarative approach seems far better than running scripts), am running a somewhat nonstandard stack (e.g. MongoDB), and am uncertain about how much value RightScale would add relative to Puppet + Amazon's auto-scaling + another hosted monitoring system. Those who use RightScale, what features do you find important? Is its auto-scaling support (including keeping single instances running) more powerful than Amazon's?

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• How can I tell if I'm behind a portal or proxy

  - by user19269

  I'm testing out a Content management system on my computer and have emailed their support for a problem regarding login.. They've replied back and asked if my CMS is behind a portal or proxy. I feel kind of stupid for not knowing this, but how do I find out? Everything is local (eg, hosted on my computer, etc). Thanks in advance!

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• Recovery partition is 'visible' while hidden

  - by jroeleveld

  For some reason the recovery partition of windows is appearing while it is hidden. With hidden I mean hidden in Disk management and Diskpart. This partition causes the screen to flicker sometimes, as it is continuously switching between being visible and hidden. Sometimes however, it is just visible. In the attached screenshots you can see the configuration. Translation: partitie=partition, In orde = OK, Verborgen = hidden, Lokale schijf = local disk, Herstelpartitie = recovery partition

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• Web based Apache VHost config dump

  - by childno.de

  Is there a native way to get a simple HTML / XML & XSD output for Apache VHost and Directives? On console I write: apachectl -S If there is no native one, is there an (open) Script / Tool (php, perl, etc.) managing this. I'm NOT looking for server management but just for a "server config overview" which might be (iframe) included in a wiki page for references on different development machines.

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• Multi-line strings in objective-c localized strings file

  - by chrispix

  I have a template for an email that I've put in a localized strings file, and I'm loading the string with the NSLocalizedString macro. I'd rather not make each line its own string with a unique key. In Objective-C, I can create a human-readable multiline string like so: NSString *email = @"Hello %@,\n" "\n" "Check out %@.\n" "\n" "Sincerely,\n" "\n" "%@"; I tried to put that in a .strings file with: "email" = "Hello %@,\n" "\n" "Check out %@.\n" "\n" "Sincerely,\n" "\n" "%@"; But I get the following error at build time: CFPropertyListCreateFromXMLData(): Old-style plist parser: missing semicolon in dictionary. email-template.strings: Unexpected character " at line 1 Command /Developer/Library/Xcode/Plug-ins/CoreBuildTasks.xcplugin/Contents/Resources/copystrings failed with exit code 1 I can concatenate it all together like this: "email" = "Hello %@,\n\nCheck out %@.\n\nSincerely,\n\n%@"; But that will be a mess to maintain, particularly as the email gets longer. Is there a way to do this in a localized strings file? I've already tried adding backslashes at the end of each line, to no avail.

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• Can I create a custom plist structure definition?

  - by Ed Marty

  When editing plist files in XCode, it can detect the type of plist and show human-readable strings to make it more easy to edit the file. The Info.plist, for example. Thanks to This question, I found the (or a) place where it stores that structure definition, as InfoPlistStructDefs.xcodeplugin. If I put my own file in there, however, nothing interesting happens. That is, it doesn't show up in the list of possible property list types. So does anybody know how to make XCode or the external property list editor application recognize a custom plist structure definition?

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• Issues with ACTION_HEADSET_PLUG broadcast in Android

  - by Denis M

  I've tried these phones: Moto Backflip 1.5, Nexus One 2.1 Basically I register BroadcastReceiver to get ACTION_HEADSET_PLUG broadcast and look on 3 extras that come in intent: state name microphone Here is the description from API: * state - 0 for unplugged, 1 for plugged. * name - Headset type, human readable string * microphone - 1 if headset has a microphone, 0 otherwise Issue #1: Broadcast comes when activity is started (not expected), when screen rotation happens (not expected) and when headset/headphones plugged/unplugged (expected). Issue #2: Backflip phone sends null for state + microphone, 'No Device' as name when headset/headphones unplugged, and sends null for state + microphone, 'Stereo HeadSet'/'Stereo HeadPhones' as name when headset/headphones plugged. Nexus even worse, it always sends null for state + microphone, 'Headset' as name when headset/headphones plugged or unplugged. Question: How it can be explained that API is broken so much on both 1.5 and 2.1 versions and different devices, manufactures?

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• Workflow Foundation 4 WorkflowServiceHost Message Correlation

  - by Lygpt

  I have 2 methods on a workflow service hosted in WorkflowServiceHost. The first method is called and starts the regular workflow sequence - talking to other web services, database work etc but on some occassions will pause and persist to db (as-in the delay activity) and wait for some human action to take place before continuing. I need my second method to be able to hook into this persisted workflow, change a local variable and then continuing processing. I have looked at message based correlation in workflow but can only seem to find examples where some kind of infinite while loop keeps the workflow instance active so that the second service method call can arrive whilst it's still running. Because my workflow instance will be delayed/persisted, the second service call doesn't seem to get anywhere (I can't have an infinite while loop keeping the workflow instance active). I hope this makes sense - cheers!

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• RESTful API Documentation

  - by PartlyCloudy

  I'm going to design a RESTful API soon, thus I need to describe it in order to enable other people to start implementing clients using it. I've looked around a bit, but unfortunately, I've not found any standardized form of describing web-based RESTful services. What I'am looking for is something like JavaDoc, although it don't have to be generated out of any sort of code. I'm also not talking about something like WADL, I rather want to have some human-readable documentation I can hand out. Due to the nature of RESTful web-based services, it should be quite easy to standardize a documentation. It should just list available ressources, corresponding URIs, allowed methods, content-types and describe the availabe actions. Do you have any suggestions therefore? Thanks in advance & Greets

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• Can I use a class as an object in C# to create instances of that class?

  - by Troy

  I'm writing a fairly uncomplicated program which can "connect" to several different types of data sources including text files and various databases. I've decided to implement each of these connection types as a class inherited from an interface I called iConnection. So, for example, I have TextConnection, MySQLConnection, &c... as classes. In another static class I've got a dictionary with human-readable names for these connections as keys. For the value of each dictionary entry, I want the class itself. That way, I can do things like: newConnection = new dict[connectionTypeString](); Is there a way to do something like this? I'm fairly new to C# so I'd appreciate any help.

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• How to track humans, but not spiders?

  - by johnnietheblack

  I am writing a nice little PHP/MySQL/JS ad system for my site - charging by impression. Therefore, my clients would like to be sure that they aren't paying for impressions caused by robots / spiders / etc. Is there a decently effective way to decipher between human and robot, without doing something obstructive like a captcha, or requesting "no index" or something? Basically, is there some sort of "name tag" that legit spiders have on so that my site knows their presence, therefore letting me react accordingly? And, if there isn't...how do ad companies like Google defend against this?

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• Excel parsing (xls) date error

  - by tau-neutrino

  I'm working on a project where I have to parse excel files for a client to extract data. An odd thing is popping up here: when I parse a date in the format of 5/9 (may 9th) in the excel sheet, I get 39577 in my program. I'm not sure if the year is encoded here (it is 2008 for these sheets). Are these dates the number of days since some sort of epoch? Does anyone know how to convert these numbers to something meaningful? I'm not looking for a solution that would convert these properly at time of parsing from the excel file (we already have thousands of extracted files that required a human to select relevant information - re-doing the extraction is not an option).

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• binary protocols v. text protocols

  - by der_grosse

  does anyone have a good definition for what a binary protocol is? and what is a text protocol actually? how do these compare to each other in terms of bits sent on the wire? here's what wikipedia says about binary protocols: A binary protocol is a protocol which is intended or expected to be read by a machine rather than a human being (http://en.wikipedia.org/wiki/Binary_protocol) oh come on! to be more clear, if I have jpg file how would that be sent through a binary protocol and how through a text one? in terms of bits/bytes sent on the wire of course. at the end of the day if you look at a string it is itself an array of bytes so the distinction between the 2 protocols should rest on what actual data is being sent on the wire. in other words, on how the initial data (jpg file) is encoded before being sent. any coments are apprecited, I am trying to get to the essence of things here. salutations!

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• Print "1 followed by googolplex number of zeros" [closed]

  - by Rajan

  Assuming we are not concerned about running time of the program (which is practically infinite for human mortals), we want to print out in base 10, the exact value of 10^(googolplex), one digit at a time (mostly zeros). Describe an algorithm (which can be coded on current day computers), or write a program to do this. Since we cannot practically check the output, so we will rely on collective opinion on the correctness of the program. NOTE : I do not know the solution, or whether a solution exists or not. The problem is my own invention. To those readers who think this is not a CS question... kindly reconsider. This is difficult and bit theoretical but definitely CS.

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• How to get descriptive error messages from DB2?

  - by tangens

  When I call a SQL statement via JDBC on the DB2 and the statement fails, I catch an SQLException with the following message text: com.ibm.db2.jcc.a.nn: DB2 SQL Error: SQLCODE=-206, SQLSTATE=42703, SQLERRMC=O.METADATENSATZ, DRIVER=3.52.95 I tried an automatic translation of the message according to the error list published by IBM, but there are placeholders inside the messages referencing other elements of the exception. While looking for these elements inside the exception, I found the DB2ExceptionFormatter and tried to use it to access the missing elements. But here I stopped, because the DB2ExceptionFormatter gave me a clue: Error occurred while trying to obtain message text from server. Only message tokens are available. So my question is: What do I have to configure to get the correct messages from the DB2 server? If I can get a human readable message from the server, I could use it directly and wouldn't have to translate it by myself.

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• Spring Webflow in Grails keeping plenty of hibernate sessions open

  - by Pavel P

  Hi, I have an Internet app running on Grails 1.1.2 and it integrates Spring WebFlow mechanism. The problem is that there are some bots ignoring robots.txt and are entering the flow quite often. Because second step of the flow needs some human intelligence, the bot leaves open flow after the first step. This causes a lot of open flows which leades to a lot of abandoned open hibernate sessions. Do you know some common clean-up mechanism for this kind of unattended flows (plus hibernate sessions) in Grails+Spring WebFlow? Thanks, Pavel

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• Extracting information from PDFs of research papers

  - by Christopher Gutteridge

  I need a mechanism for extracting bibliographic metadata from PDF documents, to save people entering it by hand or cut-and-pasting it. At the very least, the title and abstract. The list of authors and their affiliations would be good. Extracting out the references would be amazing. Ideally this would be an open source solution. The problem is that not all PDF's encode the text, and many which do fail to preserve the logical order of the text, so just doing pdf2text gives you line 1 of column 1, line 1 of column 2, line 2 of column 1 etc. I know there's a lot of libraries. It's identifying the abstract, title authors etc. on the document that I need to solve. This is never going to be possible every time, but 80% would save a lot of human effort.

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• Kink detection in drawn polylines

  - by David Rutten

  Users can sketch in my app using a very simple tool (move mouse while holding LMB). This results in a series of mousemove events and I record the cursor location at each event. The resulting polyline curve tends to be rather dense, with recorded points almost every other pixel. I'd like to smooth this pixelated polyline, but I don't want to smooth intended kinks. So how do I figure out where the kinks are? The image shows the recorded trail (red pixels) and the 'implied' shape as a human would understand it. People tend to slow down near corners, so there is usually even more noise here than on the straight bits.

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• Any tutorial for Python PalmDB library?

  - by roddik

  Hello, I've downloaded the Python PalmDB lib, but can't find any info on how to use it. I've tried reading docstrings and so far I've been able to come up with the following code: from pprint import pprint from PalmDB.PalmDatabase import PalmDatabase pdb = PalmDatabase() with open('testdb.pdb','rb') as data: pdb.fromByteArray(data.read()) pprint(dir(pdb)) pprint(pdb.attributes) print pdb.__doc__ #print pdb.records print pdb.records[10].toXML() which gives me the xml representation of a record (?) with some nasty long payload attribute, which doesn't resemble any kind of human-readable text to me. I just want to read the contents of the pdb file. Is there a guide/tutorial for this library? What would you do to figure out the proper way to make things done in my situation?

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• Teach Perl as a first language?

  - by yossale

  I need to teach a non-programmer the basics of computer programming + some basic programming skills (- He's going to be in a position between the clients and the programmers , so the company requires him to learn the basic concepts of programming). I thought of Perl - You can teach it without getting into typing and pointers and it's syntax is very close to human (precious "bless" :) ) - but I'm a bit troubled because I feel like I'm going to "spoil" him for other languages in the future (C,C++,Java - What some people call "Real" languages) - exactly because of the reasons mentioned above. What do you think?

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