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  • Bash script to keep last x number of files and delete the rest

    - by Brady
    I have this bash script which nicely backs up my database on a cron schedule: #!/bin/sh PT_MYSQLDUMPPATH=/usr/bin PT_HOMEPATH=/home/philosop PT_TOOLPATH=$PT_HOMEPATH/philosophy-tools PT_MYSQLBACKUPPATH=$PT_TOOLPATH/mysql-backups PT_MYSQLUSER=********* PT_MYSQLPASSWORD="********" PT_MYSQLDATABASE=********* PT_BACKUPDATETIME=`date +%s` PT_BACKUPFILENAME=mysqlbackup_$PT_BACKUPDATETIME.sql.gz PT_FILESTOKEEP=14 $PT_MYSQLDUMPPATH/mysqldump -u$PT_MYSQLUSER -p$PT_MYSQLPASSWORD --opt $PT_MYSQLDATABASE | gzip -c > $PT_MYSQLBACKUPPATH/$PT_BACKUPFILENAME Problem with this is that it will keep dumping the backups in the folder and not clean up old files. This is where the variable PT_FILESTOKEEP comes in. Whatever number this is set to thats the amount of backups I want to keep. All backups are time stamped so by ordering them by name DESC will give you the latest first. Can anyone please help me with the rest of the BASH script to add the clean up of files? My knowledge of BASH is lacking and I'm unable to piece together the code to do the rest.

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  • vim default save is no file type? default setting advisable?

    - by Brady Trainor
    I just came across a problem that I seemed to have found a solution, but was a little surprised by the issue. In gVim, when I save a new document (new from "within" gVim), ala :w afile I realized it saves with I guess no file format, and thus is not visible in iPhone's PlainText app. Solution seems to be, save using :w afile.txt then the problem seems solved. Is this a good way to solve it? Should I change a default somewhere, either in Windows or _gvimrc file? I may consider doing some TeX'ing in vim at some point, so perhaps a default that allows for overriding in saving, and doesn't force txt when opening "any of all" documents.

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  • Looking for suitable backup solution Mac OS X to offsite Centos 6 server 1TB of working data

    - by Brady
    I'll start by saying what we have in place currently: On site file server (Mac OS X Server) that is used by GFX designers and they have a working 1TB of data. Offsite server with 2TB available storage (Centos 6) Mac OS X server rsync data to offsite server every 6 hours (rsync -avz --delete --progress -e ssh ...) Mac OS X server does full data backup to LTO 4 tape on a 10 day recycle (Mon-Fri for 2 weeks) rsync pushes about 60GB of file changes a day. The problem: The onsite tape backup is failing as 1TB of graphics files don't compress well to fit onto a 800GB LTO4 tape. Backup is incredibly slow doing a full backup. Pain in the backside getting people to remember to change the tape. Often gets forgotten etc The quick solution: Buy LTO5 Drive and tapes. However this has been turned down because of the cost... What I would like: Something that works in the same way rysnc works. Only changed data is sent over the wire and can be scheduled to run multiple times during the day. Data that is sent is compressed and sent over SSH. Something that keeps a 14day retention but doesn't keep duplicate data So as an example if I have 1TB of working data and 60GB of changes are made each day then I expect around 1.84TB of data to be stored on the offsite server. To work with the Mac OS X server and Centos 6 server. Not cost an arm and a leg. Must be a cheaper solution than buying an LTO5 drive with tapes (around £1500). Be able to be setup to run autonomously. Have some sort of control panel that will allow an admin to easily restore a file/folder. Any recommendations?

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  • C# System.Data.SQLite Designer Code

    - by Nathan
    I've been messing around with the SQLite Designer in Visual Studio 2008 and I have noticed that when I use the generated Insert/Update statements they run extremely slow. Example: I have a data table with four columns and 5700 rows it took ~5 mins to insert the data into the database table However, I wrote my own database connection and insert methods using parameters and a single transaction and the same 5700 rows were inserted in under 1 second. Why is the generated code so slow and what is benefit to even using it? Thanks. Nathan

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  • Horizontal Scrolling Flash Game/Large Horizontal Scene

    - by Nathan
    Hello, I'm currently learning Flash (CS4, AS3) and am creating a game. I have currently 1 flv file with 4 scenes, I then move from left to right and then to scene 2 and go from left to right. This is the game where items pop up that need to be clicked on and you get points. Is there any way I can combine these onto 1 scene? Flash only allows you to have a maximum of 2880px wide. The reason for this is the transition between the scenes is RUBBISH and that my AS is not working correctly in between scenes (it loses values). Any help would be greatly appreciated! Nathan

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  • Can I check the validity of a single DataMapper property?

    - by Nathan Long
    In a custom DataMapper setter, I'd like to check whether the value I'm setting is valid or not. For instance: class ToastMitten include DataMapper::Resource property :id, Serial property :wearer, Enum['Chuck Norris', 'Jon Skeet'] property :first_worn_at, DateTime def wearer=(name) super if wearer.valid? # How can I do this? first_worn_at = Time.now end end end t = ToastMitten.new t.wearer = 'Nathan Long' # invalid value; do NOT set first_worn_at t.wearer = 'Jon Skeet' # valid value; set first_worn_at Can I check the validity of a single property like this without calling valid? on the object itself and looking through all the errors?

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  • Wix Custom Action problems

    - by Grandpappy
    I'm trying to create a custom action for my Wix install, and it's just not working, and I'm unsure why. Here's the bit in the appropriate Wix File: <Binary Id="INSTALLERHELPER" SourceFile=".\Lib\InstallerHelper.dll" /> <CustomAction Id="SQLHelperAction" BinaryKey="INSTALLERHELPER" DllEntry="CustomAction1" Execute="immediate" /> Here's the full class file for my custom action: using Microsoft.Deployment.WindowsInstaller; namespace InstallerHelper { public class CustomActions { [CustomAction] public static ActionResult CustomAction1(Session session) { session.Log("Begin CustomAction1"); return ActionResult.Success; } } } When I run the MSI, I get this error in the log: MSI (c) (08:5C) [10:08:36:978]: Connected to service for CA interface. MSI (c) (08:4C) [10:08:37:030]: Note: 1: 1723 2: SQLHelperAction 3: CustomAction1 4: C:\Users\NATHAN~1.TYL\AppData\Local\Temp\MSI684F.tmp Error 1723. There is a problem with this Windows Installer package. A DLL required for this install to complete could not be run. Contact your support personnel or package vendor. Action SQLHelperAction, entry: CustomAction1, library: C:\Users\NATHAN~1.TYL\AppData\Local\Temp\MSI684F.tmp MSI (c) (08:4C) [10:08:38:501]: Product: SessionWorks :: Judge Edition -- Error 1723. There is a problem with this Windows Installer package. A DLL required for this install to complete could not be run. Contact your support personnel or package vendor. Action SQLHelperAction, entry: CustomAction1, library: C:\Users\NATHAN~1.TYL\AppData\Local\Temp\MSI684F.tmp Action ended 10:08:38: SQLHelperAction. Return value 3. DEBUG: Error 2896: Executing action SQLHelperAction failed. The installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2896. The arguments are: SQLHelperAction, , Neither of the two error codes or messages it gives me is enough to tell me what's wrong. Or perhaps I'm just not understanding what they're saying is wrong. Any ideas on what I'm doing wrong?

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  • Understanding Column Properties for a SQL Server Table

    Designing a table can be a little complicated if you don’t have the correct knowledge of data types, relationships, and even column properties. In this tip, Brady Upton goes over the column properties and provides examples. "It really helped us isolate where we were experiencing a bottleneck"- John Q Martin, SQL Server DBA. Get started with SQL Monitor today to solve tricky performance problems - download a free trial

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  • Magento: Getting Product Url's for Products within a Grouped Product

    - by Nathan
    For a grouped product, I would like to display a link to the simple products it is composed of. For example, if I have a grouped product called Dining Set composed of plates, knives, forks, etc. I'd like each of the subproducts to have a link to that subproduct (click plates goes to the Simple Product for plates) <?php foreach ($_associatedProducts as $_item): ?> <tr> <td><?php echo $this->htmlEscape($_item->getName()) ?></td> <td class="a-right"> <?php echo $this->getPriceHtml($_item, true) ?> </td> <?php if ($_product->isSaleable()): ?> <td class="a-center"> <?php if ($_item->isSaleable()) : ?> <a href="<?php $_item->getProductUrl() ?>">View</a> <?php else: ?> <p class="availability"><span class="out-of-stock"><?php echo $this->__('Out of stock.') ?></span></p> <?php endif; ?> </td> <?php endif; ?> </tr> <?php endforeach; ?> This is a code snippet from the grouped.phtml file in app/design/frontend/blank/default/template/catalog/product/view/type/grouped.phtml In particular the line that has $_item-getProductUrl() This does not work, and I don't know the code needed to get the url for this associated product item. If anyone could help here it would be much appreciated. Also, where on earth can I find the method's available (and how they're used) for Products or Categories or $_item and the like? Thanks, Nathan

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  • Rails test db doesn't persist record changes

    - by nathan.f77
    I've been trying to solve a problem for a few weeks now. I am running rspec tests for my Rails app, and they are working fine except for one error that I can't seem get my head around. I am using MySQL with the InnoDB engine. I have set config.use_transactional_fixtures = true in spec_helper.rb I load my test fixtures manually with the command rake spec:db:fixtures:load. The rspec test is being written for a BackgrounDRb worker, and it is testing that a record can have its state updated (through the state_machine gem). Here is my problem: I have a model called Listings. The rspec test calls the update_sold_items method within a file called listing_worker.rb. This method calls listing.sell for a particular record, which sets the listing record's 'state' column to 'sold'. So far, this is all working fine, but when the update_sold_items method finishes, my rspec test fails here: listing = Listing.find_by_listing_id(listing_id) listing.state.should == "sold" expected: "sold", got: "current" (using ==) I've been trying to track down why the state change is not persisting, but am pretty much lost. Here is the result of some debugging code that I placed in the update_sold_items method during the test: pp listing.state # => "current" listing.sell! listing.save! pp listing.state # => "sold" listing.reload pp listing.state # => "current" I cannot understand why it saves perfectly fine, but then reverts back to the original record whenever I call reload, or Listing.find etc. Thanks for reading this, and please ask any questions if I haven't given enough information. Thanks for your help, Nathan B P.S. I don't have a problem creating new records for other classes, and testing those records. It only seems to be a problem when I am updating records that already exist in the database.

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  • Having trouble passing text from MySQL to a Javascript function using PHP

    - by Nathan Brady
    So here's the problem. I have data in a MySQL DB as text. The data is inserted via mysql_real_escape_string. I have no problem with the data being displayed to the user. At some point I want to pass this data into a javascript function called foo. // This is a PHP block of code // $someText is text retrieved from the database echo "<img src=someimage.gif onclick=\"foo('{$someText}')\">"; If the data in $someText has line breaks in it like: Line 1 Line 2 Line 3 The javascript breaks because the html output is <img src=someimage.gif onclick="foo('line1 line2 line3')"> So the question is, how can I pass $someText to my javascript foo function while preserving line breaks and carriage returns but not breaking the code? =========================================================================================== After using json like this: echo "<img src=someimage.gif onclick=\"foo($newData)\">"; It is outputting HTML like this: onclick="foo("line 1<br \/>\r\nline 2");"> Which displays the image followed by \r\nline 2");"

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  • What key on a keyboard can be detected in the browser but won't show up in a text input?

    - by Brady
    I know this one is going to sound weird but hear me out. I have a heart rate monitor that is hooked up like a keyboard to the computer. Each time the heart rate monitor detects a pulse it sends a key stroke. This keystroke is then detected by a web based game running in the browser. Currently I'm sending the following keystroke: (`) In the browser base game I'm detecting the following key fine and if when the user is on any data input screens the (`) character is ignored using a bit of JavaScript. The problem comes when I leave the browser and go back to using the Operating system in other ways the (`) starts appearing everywhere. So my question is: Is there a key that can be sent via the keyboard that is detectable in the browser but wont have any notable output on the screen if I switch to other applications. I'm kind of looking for a null key. A key that is detectable in the browser but has no effect to the browser or any other system application if pressed.

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  • How to display part of an image for the specific width and height?

    - by Brady Chu
    Recently I participated in a web project which has a huge large of images to handle and display on web page, we know that the width and height of images end users uploaded cannot be control easily and then they are hard to display. At first, I attempted to zoom in/out the images to rearch an appropriate presentation, and I made it, but my boss is still not satisfied with my solution, the following is my way: var autoResizeImage = function(maxWidth, maxHeight, objImg) { var img = new Image(); img.src = objImg.src; img.onload = function() { var hRatio; var wRatio; var Ratio = 1; var w = img.width; var h = img.height; wRatio = maxWidth / w; hRatio = maxHeight / h; if (maxWidth == 0 && maxHeight == 0) { Ratio = 1; } else if (maxWidth == 0) { if (hRatio < 1) { Ratio = hRatio; } } else if (maxHeight == 0) { if (wRatio < 1) { Ratio = wRatio; } } else if (wRatio < 1 || hRatio < 1) { Ratio = (wRatio <= hRatio ? wRatio : hRatio); } if (Ratio < 1) { w = w * Ratio; h = h * Ratio; } w = w <= 0 ? 250 : w; h = h <= 0 ? 370 : h; objImg.height = h; objImg.width = w; }; }; This way is only intended to limit the max width and height for the image so that every image in album still has different width and height which are still very urgly. And right at this minute, I know we can create a DIV and use the image as its background image, this way is too complicated and not direct I don't want to take. So I's wondering whether there is a better way to display images with the fixed width and height without presentation distortion? Thanks.

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  • Win32 DLL importing issues (DllMain)

    - by brady
    I have a native DLL that is a plug-in to a different application (one that I have essentially zero control of). Everything works just great until I link with an additional .lib file (links my DLL to another DLL named ABQSMABasCoreUtils.dll). This file contains some additional API from the parent application that I would like to utilize. I haven't even written any code to use any of the functions exported but just linking in this new DLL is causing problems. Specifically I get the following error when I attempt to run the program: The application failed to initialize properly (0xc0000025). Clock on OK to terminate the application. I believe I have read somewhere that this is typically due to a DllMain function returning FALSE. Also, the following message is written to the standard output: ERROR: Memory allocation attempted before component initialization I am almost 100% sure this error message is coming from the application and is not some type of Windows error. Looking into this a little more (aka flailing around and flipping every switch I know of) I linked with /MAP turned on and found this in the resulting .map file: 0001:000af220 ??3@YAXPEAX@Z 00000001800b0220 f ABQSMABasCoreUtils_import:ABQSMABasCoreUtils.dll 0001:000af226 ??2@YAPEAX_K@Z 00000001800b0226 f ABQSMABasCoreUtils_import:ABQSMABasCoreUtils.dll 0001:000af22c ??_U@YAPEAX_K@Z 00000001800b022c f ABQSMABasCoreUtils_import:ABQSMABasCoreUtils.dll 0001:000af232 ??_V@YAXPEAX@Z 00000001800b0232 f ABQSMABasCoreUtils_import:ABQSMABasCoreUtils.dll If I undecorate those names using "undname" they give the following (same order): void __cdecl operator delete(void * __ptr64) void * __ptr64 __cdecl operator new(unsigned __int64) void * __ptr64 __cdecl operator new[](unsigned __int64) void __cdecl operator delete[](void * __ptr64) I am not sure I understand how anything from ABQSMABasCoreUtils.dll can exist within this .map file or why my DLL is even attempting to load ABQSMABasCoreUtils.dll if I don't have any code that references this DLL. Can anyone help me put this information together and find out why this isn't working? For what it's worth I have confirmed via "dumpbin" that the parent application imports the same DLL (ABQSMABasCoreUtils.dll), so it is being loaded no matter what. I have also tried delay loading this DLL in my DLL but that did not change the results.

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  • Looking for good Regex book

    - by Cyberherbalist
    I've been trying to get a good grounding with Regular Expressions, and am looking for a single book to do so. I've been going through Amazon.com's listings on this subject, and I've identified a few possibilities, but am unsure which would be best for a C# developer who can write very simple Regexs, but wants to learn more. On a scale of 0-9 where 0 is knowing how to spell "Regex" but nothing else, and 9 where I could write a book on the subject out of my own head, I would place myself at 2. Which of the following would be your choice: Mastering Regular Expressions by Jeffrey E F Friedl Regular Expressions Cookbook by Jan Goyvaerts and Steven Levithan Sams Teach Yourself Regular Expressions in 10 Minutes by Ben Forta Beginning Regular Expressions (Programmer to Programmer) by Andrew Watt Regular Expression Recipes for Windows Developers: A Problem-Solution Approach by Nathan A. Good Regular Expression Recipes: A Problem-Solution Approach by Nathan A. Good Now, according to Amazon, "Regular Expressions Cookbook" (REC) above is rated the highest according to user ratings, but only based on 20 reviews. The first one, "Mastering Regular Expressions" (MRE) is rated second based on 140 reviews. This alone suggests that MRE might be by far the best one. But is it best for a relative beginner? Would I perhaps be better getting "Beginning Regular Expressions" (BRE) instead, to start with? Please help me resolve my confusion!

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  • Why is clip space always referred to as "homogeneous clip space"?

    - by Nathan Ridley
    I've noticed in almost everything I've read so far that the term "clip space" is prepended with the word "homogeneous". Now I understand that it roughly means "all the same", but I don't understand why there is the express need to say "homogeneous clip space". When is clip space not homogeneous and why do we need to differentiate? And for that matter, what exactly does it mean that we're calling it "homogeneous clip space"? Homogenous in relation to what? In what way are the vertices "all the same"?

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  • DirectX11 Swap Chain RGBA vs BGRA Format

    - by Nathan
    I was wondering if anyone could elaborate any further on something that's been bugging me. In DirectX9 the main supported back buffer formats were D3DFMT_X8R8B8G8 and D3DFMT_A8R8G8B8 (Both being BGRA in layout). http://msdn.microsoft.com/en-us/library/windows/desktop/bb174314(v=vs.85).aspx With the initial version of DirectX10 their was no support for BGRA and all the textbooks and online tutorials recommend DXGI_FORMAT_R8G8B8A8_UNORM (being RGBA in layout). Now with DirectX11 BGRA is supported again and it seems as if microsoft recommends using a BGRA format as the back buffer format. http://msdn.microsoft.com/en-us/library/windows/apps/hh465096.aspx Are there any suggestions or are there performance implications of using one or the other? (I assume not as obviously by specifying the format of the underlying resource the runtime will handle what bits your passing through and than infer how to utilise them based on the format.)

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  • XAML Controls in WinForms

    - by Nathan Friesen
    We're considering converting our WinForms application to a WPF application. Part of the reason is that WPF/XAML seem to be the future. We are also using third party controls that we would like to be able to phase out. Making this conversion seems like a pretty big and time consuming undertaking, though. Would it make sense to develop XAML controls that could be used in our WinForms application as a first step in the process? My thinking is that the same controls would then be used in the WPF application and all of the look, feel, and functionality would be built into the controls in either environment.

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  • What should be tested in Javascript?

    - by Nathan Hoad
    At work, we've just started on a heavily Javascript based application (actually using Coffeescript, but still), of which I've been implementing an automated test system using JsTestDriver and fabric. We've never written something with this much Javascript, so up until now we've never done any Javascript testing. I'm unsure what exactly we should be testing in our unit tests. We've written JQuery plugins for various things, so it's quite obvious that they should be verified for correctness as much as possible with JsTestDriver, but everyone else in my team seems to think that we should be testing the page level Javascript as well. I don't think we should be testing page level Javascript as unit tests, but instead using a system like Selenium to verify everything works as expected. My main reasoning for this is that at the moment, page level Javascript tests are guaranteed to fail through JsTestDriver, because they're trying to access elements on the DOM that can't possibly exist. So, what should be unit tested in Javascript?

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  • Share an Interface between XAML and WinForms

    - by Nathan Friesen
    We're considering converting our WinForms application to a XAML application sometime in the future. Currently, our WinForms application uses lots of tabs, which we put use to display different User Control objects. All of these controls implement a specific Interface so we can make specific calls to them and not worry about what the actual control is (things like Save, Close, Clear, etc.) Would it be possible to create a WPF project that contains XAML User Controls that implement the same Interface and display those User Controls in the WinFroms project within a tab?

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  • Ubuntu Software Center starts, then crashes before fully loaded [closed]

    - by Nathan Weisser
    Possible Duplicate: Software center not opening I am brand new to Linux and Ubuntu, and I couldn't install GIMP without the software center. I looked up earlier how to fix it, and it said to fix my sources list, and I did, but now i get a new error in the terminal. 2012-08-14 15:29:08,941 - softwarecenter.ui.gtk3.app - INFO - setting up proxy 'None' 2012-08-14 15:29:08,954 - softwarecenter.db.database - INFO - open() database: path=None use_axi=True use_agent=True 2012-08-14 15:29:09,407 - softwarecenter.ui.gtk3.app - INFO - building local database 2012-08-14 15:29:09,408 - softwarecenter.db.pkginfo_impl.aptcache - INFO - aptcache.open() 2012-08-14 15:29:17,308 - softwarecenter.db.update - WARNING - Problem creating rebuild path '/var/cache/software-center/xapian_rb'. 2012-08-14 15:29:17,309 - softwarecenter.db.update - WARNING - Please check you have the relevant permissions. 2012-08-14 15:29:17,309 - softwarecenter.db.database - INFO - open() database: path=None use_axi=True use_agent=True 2012-08-14 15:29:18,039 - softwarecenter.backend.reviews - WARNING - Could not get usefulness from server, no username in config file 2012-08-14 15:29:18,431 - softwarecenter.ui.gtk3.app - INFO - show_available_packages: search_text is '', app is None. 2012-08-14 15:29:19,153 - softwarecenter.db.pkginfo_impl.aptcache - INFO - aptcache.open() Traceback (most recent call last): File "/usr/bin/software-center", line 176, in <module> app.run(args) File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 1422, in run self.show_available_packages(args) File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 1352, in show_available_packages self.view_manager.set_active_view(ViewPages.AVAILABLE) File "/usr/share/software-center/softwarecenter/ui/gtk3/session/viewmanager.py", line 154, in set_active_view view_widget.init_view() File "/usr/share/software-center/softwarecenter/ui/gtk3/panes/availablepane.py", line 136, in init_view SoftwarePane.init_view(self) File "/usr/share/software-center/softwarecenter/ui/gtk3/panes/softwarepane.py", line 215, in init_view self.icons, self.show_ratings) File "/usr/share/software-center/softwarecenter/ui/gtk3/views/appview.py", line 69, in __init__ self.helper = AppPropertiesHelper(db, cache, icons) File "/usr/share/software-center/softwarecenter/ui/gtk3/models/appstore2.py", line 109, in __init__ softwarecenter.paths.APP_INSTALL_PATH) File "/usr/share/software-center/softwarecenter/db/categories.py", line 255, in parse_applications_menu category = self._parse_menu_tag(child) File "/usr/share/software-center/softwarecenter/db/categories.py", line 444, in _parse_menu_tag query = self._parse_include_tag(element) File "/usr/share/software-center/softwarecenter/db/categories.py", line 402, in _parse_include_tag xapian.Query.OP_AND) File "/usr/share/software-center/softwarecenter/db/categories.py", line 341, in _parse_and_or_not_tag operator_elem, xapian.Query(), xapian.Query.OP_OR) File "/usr/share/software-center/softwarecenter/db/categories.py", line 385, in _parse_and_or_not_tag q = self.db.xapian_parser.parse_query(s, File "/usr/share/software-center/softwarecenter/db/database.py", line 174, in xapian_parser xapian_parser = self._get_new_xapian_parser() File "/usr/share/software-center/softwarecenter/db/database.py", line 200, in _get_new_xapian_parser xapian_parser.set_database(self.xapiandb) File "/usr/share/software-center/softwarecenter/db/database.py", line 166, in xapiandb self._db_per_thread[thread_name] = self._get_new_xapiandb() File "/usr/share/software-center/softwarecenter/db/database.py", line 179, in _get_new_xapiandb xapiandb = xapian.Database(self._db_pathname) File "/usr/lib/python2.7/dist-packages/xapian/__init__.py", line 3666, in __init__ _xapian.Database_swiginit(self,_xapian.new_Database(*args)) xapian.DatabaseOpeningError: Couldn't detect type of database I'm not sure how to fix the errors, and I couldn't find a topic on them anywhere. Be nice, because I am a two-day old Linux user :/ Tell me if you need my Sources list

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  • C# coding standards” Use the const directive only on natural constants

    - by Nathan Wilfert
    I've seen these 2 guidelines in coding c# standard and I’m not sure the what the 2nd one means. With the exception of zero and one, never hard-code a numeric value; always declare a constant instead. Use the const directive only on natural constants such as the number of days of the week. 1st what is the definition of a natural constants and if the number is not a natural constants given the 1st rule how does one declare a constant in c# without the const directive? See http://www.scribd.com/doc/10731655/IDesign-C-Coding-Standard-232 for reference.

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  • DirectX11 Swap Chain Format

    - by Nathan
    I was wondering if anyone could elaborate any further on something thats been bugging be me. In DirectX9 the main supported back buffer formats were D3DFMT_X8R8B8G8 and D3DFMT_A8R8G8B8 (Both being BGRA in layout). http://msdn.microsoft.com/en-us/library/windows/desktop/bb174314(v=vs.85).aspx With the initial version of DirectX10 their was no support for BGRA and all the textbooks and online tutorials recommend DXGI_FORMAT_R8G8B8A8_UNORM (being RGBA in layout). Now with DirectX11 BGRA is supported again and it seems as if microsoft recommends using a BGRA format as the back buffer format. http://msdn.microsoft.com/en-us/library/windows/apps/hh465096.aspx Is their any suggestions or are their performance implications of using one or the other. (I assume not as obviously by specifying the format of the underlying resource the runtime will handle what bits your passing through and than infer how to utilise them based on the format). Any feedback is appreciated.

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