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• How to determine what user and group a Python script is running as?

  - by Chirael

  I have a CGI script that is getting an "IOError: [Errno 13] Permission denied" error in the stack trace in the web server's error log. As part of debugging this problem, I'd like to add a little bit of code to the script to print the user and (especially) group that the script is running as, into the error log (presumably STDERR). I know I can just print the values to sys.stderr, but how do I figure out what user and group the script is running as? (I'm particularly interested in the group, so the $USER environment variable won't help; the CGI script has the setgid bit set so it should be running as group "list" instead of the web server's "www-data" - but I need code to see if that's actually happening.)

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• Type problem when including tuple

  - by Person

  I'm using Visual Studio 2008 with Feature Pack 1. I have a typedef like this typedef std::tr1::tuple<std::string, std::string, int> tileInfo with a function like this const tileInfo& GetTile( int x, int y ) const. In the implementation file the function has the exact same signature (with the added class name qualifier) and I am getting a redefinition: different type modifiers error. It seems to be looking for an int& instead of a tileInfo& When I mouse over the type of the function in the header, i.e. tileInfo& it brings up a little bar saying static const int tileInfo. I think this may be the problem, but I'm not sure what to do. Any help is appreciated, thanks.

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• Powershell function that creates a array by input

  - by user2971548

  I'm quite new to Powershell and working on a little project with functions. What I'm trying to do is creating a function that takes 2 arguments. The first argument ($Item1) decides the size of the array, the second argument ($Item2) decides the value of the indexes. So if I write: $addToArray 10 5 I need the function to create a array with 10 indexes and the value 5 in each of them. The second argument would also have to take "text" as a value. This is my code so far. $testArray = @(); $indexSize = 0; function addToArray($Item1, $Item2) { while ($indexSize -ne $Item1) { $indexSize ++; } Write-host "###"; while ($Item2 -ne $indexSize) { $script:testArray += $Item2; $Item2 ++; } } Any help is appreciated. Kind regards Dennis Berntsson

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• ASP.NET JavaScript File Embeded In DLL With GZIP

  - by Lee Hesselden

  We have several fairly large JavaScript files embedded into a single script resources DLL. This is then consumed by multiple projects by way of a reference and page includes via the ASP.NET script manager. This keeps things nice and neat within our ASP.NET pages and requires very little work to integrate into new projects. The problem is that some of these script files are quite larger (approx 100KB) and take time to download. By running minify on them before embedding this is reduced down a lot (around 70KB) but not enough. What we would like to do is GZIP the files before they are embedded. However, just gzipping the files causes syntax errors as the content is not unzipped. There is a content type "text/javascript" applied in AssemblyInfo when the resource is embedded but we can't find a way to specify content-encoding. Is there any way to make this work without having to write a httpmodule/handler (which would mean changing the config for all consuming projects)?

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• Creating a foreign key in MySQL produces error:

  - by SnOrfus

  I'm trying to create a foreign key on a table in MySQL and I'm getting a strange error that there seems to be little info about in any of my searches. I'm creating the key with this (emitted from mysql workbench 5.2): ALTER TABLE `db`.`appointment` ADD CONSTRAINT `FK_appointment_CancellationID` FOREIGN KEY (`CancellationID` ) REFERENCES `db`.`appointment_cancellation` (`ID` ) ON DELETE NO ACTION ON UPDATE NO ACTION , ADD INDEX `FK_appointment_CancellationID` (`CancellationID` ASC) ; at which point I get the error: ERROR 1452: Cannot add or update a child row: a foreign key constraint fails (alarmtekcore., CONSTRAINT FK_lead_appointment_CancellationID FOREIGN KEY (CancellationID) REFERENCES lead_appointment_cancellation (`) I've checked here but there's no data in the table.

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• core-plot and NSDate (iPhone)

  - by Urizen

  I wish to plot a line graph where the x-axis is defined as a number of days between two dates and the y-axis is a value that varies on each of the days. I can plot the y values as an NSNumber but I have no idea how to set the ranges and the markup on the x-axis. I have looked at the date example in the "examples" directory of the core-plot distribution but have found it a little confusing. Does anyone know of a tutorial, or code sample, which might asist me in this regard? Thank you in advance.

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• setNeedsDisplayInRect: paints a white rectangle only

  - by Ion Tichy

  Hi, I'm still a little fresh to CoreGraphics programming, so please bear with me. I'm trying to write an application, which allows the user to rub stuff off an image with the finger. I have the basic functionality nailed down, but the result is sluggish since the screen is redrawn completely every time a touch is rendered. I did some research and found out that I can refresh only a portion of the screen using UIView's setNeedsDisplayInRect: method. This does call drawRect: as expected, however everything I draw in the drawRect: following the setNeedsDisplayInRect: is ignored. Instead, the area in the rect parameter is simply filled with white. No matter what I draw inside, all I end up with is a white rectangle. In essence, this is what I do: 1) when user touches screen, this touch is rendered into a mask 2) when the drawRect: is called, the image is masked with that mask There must be something simple I'm overlooking, surely?

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• How do you enable block folding for Python comments in TextMate?

  - by Dave Gallagher

  In TextMate 1.5.10 r1623, you get little arrows that allow you to fold method blocks: Unfortunately, if you have a multi-lined Python comment, it doesn't recognize it, so you can't fold it: def foo(): """ How do I fold these comments? """ print "bar" TextMate has this on their site on how to customize folding: http://manual.macromates.com/en/navigation_overview#customizing_foldings ...but I'm not skilled in regex enough to do anything about it. TextMate uses the Oniguruma regex API, and I'm using the default Python.tmbundle updated to the newest version via GetBundles. Does anyone have an idea of how to do this? Thanks in advance for your help! :)

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• Which rdfa parser for java that supports currently used rdfa attributes?

  - by lennyks

  I am building an app in Java using Jena for semantic information scraping. I am looking for a RDFa parser that would allow me to correctly extract all the rdfa statements. Specifically, one that extracts info about namespaces used and presuming that rdfa tags are correct in the page produces correct triples, ones that distinguish between object and data properties. I went through all rdfa parsers from the site http://rdfa.info/wiki/Consume for Java. They all struggle to extract any rdfa statements and if they do not crash, Jena RDFa parser shows plenty of errors and then dies a terrible death, the data is of little use as it is incorrectly processed and generally mixed up. I am newbie in this area so please be gentle:) I was also thinking of using a library written in different language but then again I don't really know how to plug it into Java code. Any suggestions?

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• CakePHP HABTM Plugin table naming conventions (for 1.3)

  - by Parris

  Hi everyone, I know naming conventions for tables used by plugins generally start with the name of the plugin and then the model pluralized. For example lets say I had a plugin called Poll, with a model also called PollPoll and another model called PollTag then the resulting table names would be poll_polls and poll_tags. They would also have a habtm relationship so what is the convention for that table name? I believe it would poll_poll_polls_poll_tags, although it is a little redundant it makes sense since the first poll_ represents the name of the plugin, while poll_polls and poll_tags relates to the models. Also have any naming conventions changed for plugins in 1.3? Is the above stated correct? Thanks!

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• List replies in a winform

  - by andrew

  In my C# app I get an xml from a server that contains some replies like in a forum thread (with elements like author, time, body, title, whatever). When I get this xml, I create a new form in which i want to display these replies, and a little text box with an "add reply" button. I'd also like some edit buttons on perhaps my own replies in the reply list displayed in the form. The simplest way that came to my mind to display the replies is to put a web browser control in the form, generate a full html page in a string from the xml, and throw it in that web browser control. And under it i can put the text box with the add reply button. Everything is ok, except that i have no idea of how i could implement the edit function on my own replies (i mean i could add a link in there... but link to what) I would like to know if there is a way to get that edit event from the web browser control (my guess is i can't) or another (maybe simple/easy) idea of displaying the replies in a winform using other controls

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• Should I include the binary in a Rails plugin or not?

  - by Nick Gorbikoff

  Hello. I'm trying to roll out a little Rails plugin that is basically is just a wrapper to a 7zip archiver. Should I include the 7zip binaries for windows, mac and linux with it or explain to user that it's a dependency and they need to get it working. I know it's not that difficult to install a 7zip, but what is the best practice in general. The reason I'm asking is cause I've ran so many times into gems that need some sort of dependency that doesn't compile properly or is not available in ready form for the OS in question and then I end up spending have a day hunting down for a binary or a way to compile the program. (Have happened to me both on Mac and Windows, not on Debian so far. )

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• Best anti boss tricks to hide your private page navigation from your desktop.

  - by systempuntoout

  This question is slightly related to programming and it's kinda lame, i know; but i saw many funny things in these years and i'm looking for new tricks from you. I'm talking about methods to fast-hide\camouflage not job related web pages on your desktop when boss arrives like a ghost\ninja behind your shoulders. I know how much can be frustrating, programming hard for ten hours and then been caught by your boss watching XKCD during a 2 minutes break. I think the most common anti boss trick is the evergreen CTRL+TAB, but you have to be fast and your left hand has to be near the keyboard. I saw pitch black brightness on Lcd (how can you pretend to program on that?) or custom sized browser to fit a little space just below the IDE. My favourite one at the moment is using fire gesture plugin with FF; with a micro gesture you can hide FF to your tray in a blink of an eye. Do you have any trick to share?

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• W3C Web Content Accessibility Guidelines 1.0, which technology could I use?

  - by vtortola

  Hi, I've a project where one of the requirements is fullfil the "W3C Web Content Accessibility Guidelines 1.0 (WCAG 1.0)". I'm now considering wich technology could I use to acomplish it, but I'm a little bit confused. Silverlight would be the easiest way, but I cannot find conclusive information about if silverlight is or isn't compilant. I've seen controls pack done in javascript that looks very nice, like DHTMLX, but again the same problem, I don't know for sure. Besides, I've always read that a website should work wihthout javascript, and use it just for improve the user experience. Thanks.

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• This PHP/Smarty doesn't work in IE

  - by Kyle Sevenoaks

  I'm starting to get sick of IE's random problems. Page link. (Add things to the cart with the kjøp button and handlevogn) I have this little tiny code here, {foreach $cart.taxes.$currency as $tax} <div id="subTotalCaption2"><p style="width:100px;">{$tax.name_lang}:</p></div> <div id="taxAmount2"><p>{$tax.formattedAmount}</p></div> {/foreach} That's meant to display the amount of total tax for each of the items in the basket. (MVA 25%) This works in every other browser but not IE. Why? Why not? Just why? Any help at all would be very much appreciated.

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• Creating matrix of maximum values indices in MATLAB

  - by Gacek

  Using MATLAB, I have an array of values of size 8 rows x N columns. I need to create a matrix of the same size, that counts maximum values in each column and puts 1 in the cell that contains maximum value, and 0 elsewhere. A little example. Lets assume we have an array of values D: D = 0.0088358 0.0040346 0.40276 0.0053221 0.017503 0.011966 0.015095 0.017383 0.14337 0.38608 0.16509 0.15763 0.27546 0.25433 0.2764 0.28442 0.01629 0.0060465 0.0082339 0.0099775 0.034521 0.01196 0.016289 0.021012 0.12632 0.13339 0.11113 0.10288 0.3777 0.19219 0.005005 0.40137 Then, the output matrix for such matrix D would be: 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 Is there a way to do it without catching vector of indices from max function and then putting ones in the right place using for loop?

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• OpenAL device, buffer and context relationship

  - by Markus

  I'm trying to create an object oriented model to wrap OpenAL and have a little problem understanding the devices, buffers and contexts. From what I can see in the Programmer's Guide, there are multiple devices, each of which can have multiple contexts as well as multiple buffers. Each context has a listener, and the alListener*() functions all operate on the listener of the active context. (Meaning that I have to make another context active first if I wanted to change it's listener, if I got that right.) So far, so good. What irritates me though is that I need to pass a device to the alcCreateContext() function, but none to alGenBuffers(). How does this work then? When I open multiple devices, on which device are the buffers created? Are the buffers shared between all devices? What happens to the buffers if I close all open devices? (Or is there something I missed?)

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• Javascriptlibrary more efficient than Rickshaw for realtime visualizations

  - by dan kutz

  I want to visualize data as time-series graphs on mobile devices(tablets) and therefore stumbled upon rickshaw, which is based on D3. First I must say I was a little bit confused when I realized that realtime in web design is defined totally different to realtime in engineering which has fixed(and often very short) timeframes. Anyway my aim is to visualize the data as fast as possible, and on older tablets visualization with rickshaw is quite slow. Can anybody recommend another library, which may be more efficient in rendering? Or is there no way out and I have to go native? regards Dan.

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• iPhone stretchableImageWithLeftCapWidth only makes "D"s.

  - by Jill

  UIImage *aImage = [[UIImage imageNamed:@"Gray_Button.png"] stretchableImageWithLeftCapWidth:25 topCapHeight:0]; Trying to make a "glass pill button". What does "stretch" do if the image is bigger... and the button I'm trying to use it on... is smaller? Does the image 'stretch' and 'shrink'? The reason I ask... is because all my images end up look like a "D" shape. The left side is squared-off... and the right side is rounded. What would a D-shape tell you that I'm doing wrong? Too much.. or too little... "leftCap setting"? Too large an image?

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• In WPF using a ListView is there an elegant way to auto resize items?

  - by Justin

  I recently wrote, my first, WPF application that has a list of items that are polled from a web-serivce. The items are displayed/data-bound in a ListView via a GridView. A background thread periodically polls the web-serivce and updates the list. If, say, I had three items initially bound to the ListView that simply display a description and the three descriptions where something like: - ProjectA - ProjectB - ProjectC Later a new item is added with a description of 'AReallyReallyLongProjectName', I would end up with a list like: - ProjectA - ProjectB - ProjectC - AReallyR The GridViewColumn would not update it's width and would subsequently cut off any new items that extended the original width. I added this bit of code which forces the column to resize, but it just seems a little hacky. (Just seems weird to set a width just to set it back to nothing to force the resize) if(gridView != null) { foreach(var column in gridView.Columns) { if (double.IsNaN(column.Width) column.Width = column.ActualWidth; column.Width = double.NaN; } } Is there a better, more elegant solution, to accomplish this same thing?

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• does a switch idiom make sense in this case?

  - by the ungoverned

  I'm writing a parser/handler for a network protocol; the protocol is predefined and I am writing an adapter, in python. In the process of decoding the incoming messages, I've been considering using the idiom I've seen suggested elsewhere for "switch" in python: use a hash table whose keys are the field you want to match on (a string in this case) and whose values are callable expressions: self.switchTab = { 'N': self.handleN, 'M': self.handleM, ... } Where self.handleN, etc., are methods on the current class. The actual switch looks like this: self.switchTab[selector]() According to some profiling I've done with cProfile (and Python 2.5.2) this is actually a little bit faster than a chain of if..elif... statements. My question is, do folks think this is a reasonable choice? I can't imagine that re-framing this in terms of objects and polymorphism would be as fast, and I think the code looks reasonably clear to a reader.

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• iPhone Web Appication development and deployment

  - by yakub_moriss

  Hi,All I haven't develop any iPhone Web Application ever...so i am little bit confuse about that. I want to build a Web Application for iPhone which will be made using(CSS+JavaScript). I read some where that no approval is required for iPhone Web Application. is it correct ? And if i have made my iPhone Web Application (using CSS+JavaScript)and uploaded at my server. and if i want to open it in UIWebView using iPhone SDK simply... is this Application is valid for iPhone Web Application portal https://adcweb.apple.com/iphone/index.php or not ? how can end users get the Application on their iPhone after submiting to the portal... Thanks in advance...

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• Creating Dynamic variables from json response

  - by c0mrade

  My JSON response looks like this : {"sample":[{"id":"2","name":"branch name"},{"id":"3","name":"branch name 2"}]} My function looks like this : function getJSONObjects(){ $.getJSON("http://localhost/api/branches", function(data){ $.each(data.sample, function(i,item){ var loc = "branch"; eval("var " + loc + item.id + "=123;"); alert(loc + item.id); }); }); } The idea is to create branch + id object so I can do something with it(create marker on a map), so I tried to assign it any value to see if this was working. I wanted both branch2 and branch3 to alert 123 so I have something to start with. But currently this alerts branch2 and branch3 instead of 123. I have little experience with creating dynamic variables/objects can someone tell me what I'm doing wrong or maybe another approach towards solving this?

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• Browser loading strategy, <head>...<body>

  - by Bin Chen

  I am inspecting some interesting behaviors of browser, I don't know it's in standard or not. If I put everythin inside <head></head>, the browser will only begin to render the page after all the resouces in head is retrieved. So I am thinking that put as little as possible things into head is one of the important website optimization techniques, is it right? My question is: If I put script/css in body or other parts of the html, how can I know that script has been loaded successfully so that I will not be calling a undefined function?

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• Best solution for language documentation.

  - by Simone Margaritelli

  I'm developing a new object oriented scripting language and the project itself is quite ready for audience now, so i'm starting to think about a serious (not as "drafty" as it is right now) way of document its grammar, functions from standard library and standard library classes. I've looked a bit around and almost every language hash its own web application for the documentation, Python uses Sphinx for instance. Which is the best PHP (don't have the time/will to install mod_who_knows_what on my server) application to accomplish this? I've used mediawiki a bit but i found its tag system a little bit hard to use in this context. Thanks for your answers.

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