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• How to write syntax highlighting?

  - by ML

  I am embarking on some learning and I want to write my own syntax highlighting for files in C++. Can anyone give me ideas on how to go about doing this? To me it seems that when a file is opened: 1. it would need to be parsed and decided what type of source file it is. Trusting the extension might not be full-proof a way to know what keywords/commands apply to what language a way to decide what color each keyword/command gets I want to do this on OS X, C++ or Objective-C Can anyone provide pointers on how I might get started with this?

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• Passing methods/functions as args in Objective C

  - by Baishampayan Ghose

  Hello, I am new to Objective C and I am trying to implement an async library which works with callbacks. I need to figure out a way to pass callback methods as args to my async methods so that the callback can be invoked when the task is finished. What is the best way to achieve this in Objective C? In Python, for example I could easily pass a function, but in Objective C it seems selectors are the way to go(?). Can anyone point me to an example from where I can get some ideas? Thanks in advance.

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• Cstom handler on IIS 7.5 doesn't work

  - by Amit

  Hi, I am new to IIS 7.5. I have an application in asp.net 2.0, which has its own custom URL rewriting mechanism. All the requests on the browser with .htm will be mapped to .aspx. It works fine on IIS 6, but somehow I could not get it working on IIS 7.5. On IIS 6, I go to Application PropertiesConfigurationMappings and add a new extension .htm with the executable as aspnet_isapi.dll On IIS 7.5 i added a handler mapping, with path as .htm and executable as aspnet_ispai.dll But the request does not even come to global.asax. If i try the URL with .aspx extension, pages load properly. Any idea how to set up custom mappings in iis 7.5?

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• Modifying setup file with PHP

  - by Paul Lammertsma

  I have an application that needs branding when downloaded in certain continents. When installed in North America, for instance, the application, when run, displays a different logo and company name than in Europe. The setup file is provided through a PHP script. Presently there is a Inno Setup executable for Windows and a DMG for Mac OS X. I have seen that when downloading Google Chrome, you can specify whether or not it should send usage statistics. A brief look at the JavaScript that controls it reveals that this is simply sent back to the server with &usagestats=0 or &usagestats=1. How would I go about influencing the installation based upon settings specified via the PHP download page?

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• JPEG image with alpha channel on website

  - by mikez302

  I would like to make a JPEG image file with some pixels that are partially transparent or fully transparent, similar to a PNG file with an alpha channel. Is this possible? If so, how would I go about doing this? I would like to use the image on a website. If I try to do this, would it work in any or all of the popular browsers (IE 7+, Firefox, Safari)? Assuming it is possible, will it just work, or are there any tricks or hacks required to make it work?

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• How to get use text columns in a trigger

  - by Jeremy

  I am trying to use an update trigger in sql 2000 so that when an update occurs, I insert a row into a history table, so I retain all history on a table: CREATE Trigger trUpdate_MyTable ON MyTable FOR UPDATE AS INSERT INTO [MyTableHistory] ( [AuditType] ,[MyTable_ID] ,[Inserted] ,[LastUpdated] ,[LastUpdatedBy] ,[Vendor_ID] ,[FromLocation] ,[FromUnit] ,[FromAddress] ,[FromCity] ,[FromProvince] ,[FromContactNumber] ,[Comment]) SELECT [AuditType] = 'U', D.* FROM deleted D JOIN inserted I ON I.[ID] = D.[ID] GO Of course, I get an error "Cannot use text, ntext, or image columns in the 'inserted' and 'deleted' tables." I tried joining to MyTable instead of deleted, but because the insert triger fires after the insert, it ends up inserting the new record into the history table, when I want the original record. How can I do this and still use text columns?

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• View Latest Comments Made

  - by Abs

  Hello all, I hope I can give feedback like this. It may be just me and others may have already suggested this but is there a way to view our recent comments in our account profiles? I mean I can see questions asked, questions answered etc. But there are loads of questions where I add a comment to the question asker and when I leave the site, I either have to remember what the question was to go back and check if anyone has posted anything. Simply, I think having a place where we can view our latest comments if not all our comments in the control panel/user area would be great! Thanks all

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• Get user-inputed file name from JFileChooser Save dialog box

  - by Anya

  This answer to this question may seem obvious, but I'm actually struggling with it quite a bit. I've searched through JFileChooser methods in the API, and I've looked at some of the questions already asked and answered here on stackoverflow. My question is this. In my program, I am to allow the user to type in a file name which I will then use to create a brand new file that I will write on. How do you get the text the user has entered in the textfield next to the label "Save As:" on the Save dialog box provided by JFileChooser? Is there a JFileChooser method that would allow me to get that user-inputed text? Or would I have to go through another class, or do something else to get that text? Thank you so much, to anyone who answers. It's very late for me now, and this program is due in a few hours (meaning I'll be having another sleepless night). Desperate may be too strong a word, but I'm something close enough.

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• Creating a notification system using a firefox extension

  - by user303052

  I am creating a firefox extension that should give a notification when the user hits specific sites. I do not want the same kind of notification that firefox gives for pop-ups. I don't want the user to have to go through the hassle of clicking the X in order to close the notification. Instead, I would like it to look like what happens when a normal firefox download is completed - a notification comes up, and automatically goes after a few seconds. On a mac, it looks like a growl notification, and I love the way it looks. Is there an easy way to implement this feature? Thanks

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• Curser control using Masked Text Box in C#

  - by George

  I seem to have asked this question twice ! I kept getting a message saying New Members can only add a new Question every 20 minutes, try again later !!! Sorry for the duplication ! Please ignore this one !! Thanks. In my app in C# I have several input fields that I need to capture. I need them to be of specific sizes and type and I have used masked Text Boxes for these. I have fields like name which is 20 text charachters long, and a certificate number which is 5 numeric characters with a preceding C etc. This works fine except with I click on a field with the mouse, the cursor does not go to the begining of the fild, or the end of any input text. Is there a way of allowing this to happen using Masked Text Box or will I have to use normal Text Box and do all the field validation manually ?

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• Access SDExplorer (System Folder) from my C# app

  - by Søren

  Hello everyone I am trying out Windows Live SkyDrive, and I installed SDExplorer (http://www.cloudstorageexplorer.com/) It works by adding my SkyDrive folder to Windows Explorer, but it does not get a drive name or anything, so how can I access that drive/folder from my C# application? When I go into the folder and look at the address bar it says "Computer\SDExplorer". Directory.GetDirectories(@"\Computer\SDExplorer") does not work, because it translates to "C:\Computer\SDExplorer". I would like to be able to create a small application that can create folders and upload files to my SkyDrive account. Anybody know how these special folder/drives work? - I noticed MozyHome appears in the same way in my Windows Explorer.

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• Does android support playlists for video files?

  - by DanJ

  I'm and android beginner, so go easy on me ;-) I'm trying to play a sequence of video files which I'm downloading from a server. The challenge is that I want to have a smooth transition from one file to another. My thought is to have two MediaPlayer instances each preparing and then playing in turn. It is not clear to me if they can both share the same SurfaceView? Or maybe, I should be using different views and swapping between them? Or, the idea is a bad idea all together? When I try to run configure the MediaPlayer instance with a view that isn't visible it seems to crash my emulator.

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• Installing unsigned x64 driver to work with libusbdotnet

  - by user216194

  Hi all- I am currently in a Windows 7 dev. environment working to get a device to initialize with libusbdotnet. The device (a USB mass storage device) connects and runs using the default USB-MASS Storage driver for Windows. I want to replace this driver with the one created by the .INF Wizard in libusbdotnet. The operating system is a 64-bit, and by default the INF Wizard produces this driver, but I am unable to selected it because it is "unsigned" I believed, when I go to "Pick from a list of drivers" and point to the directory where the newly created device drivers are. I have enabled "TEST MODE" using DESO but I'm still unable to select this file. Anyone familiar with libusbdotnet, or directing devices to work with a specific driver that is unsigned in Window (do I need the .inf file? or the .sys???) do you have any advice about where I'm going wrong? Thanks!

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• Facebook Graph API with Rails and Authlogic - preferred methodology?

  - by decabear

  There are lots of Facebook + Rails solutions, most notably Facebooker, but this and many others are not compatible with Rails 3. I'm currently using Authlogic for authentication with my app, and I want to give users the option of Facebook to sign in. I want to find the best way to have FB and Authlogic go together; right now I'm just writing my own Authlogic add-on for Facebook but if this has already been done then I don't want to redo someone else's work. Does anyone know of anything like this?

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• Python string manipulation

  - by paradox

  I'm trying to split a string into a int list for further processing. But somehow I can't remove certain whitespaces in between elements of the list. The string x is supposed to have a length of 1000 instead of 1019. I tried reading the documentation for python and saw the function strip() for stripping whitespaces from strings. However, it only works for trailing and leading whitespaces. How should I go about removing these whitespaces and also how do I convert a str list to a int list? My code is as follows : import array x = """73167176531330624919225119674426574742355349194934 96983520312774506326239578318016984801869478851843 85861560789112949495459501737958331952853208805511 12540698747158523863050715693290963295227443043557 66896648950445244523161731856403098711121722383113 62229893423380308135336276614282806444486645238749 30358907296290491560440772390713810515859307960866 70172427121883998797908792274921901699720888093776 65727333001053367881220235421809751254540594752243 52584907711670556013604839586446706324415722155397 53697817977846174064955149290862569321978468622482 83972241375657056057490261407972968652414535100474 82166370484403199890008895243450658541227588666881 16427171479924442928230863465674813919123162824586 17866458359124566529476545682848912883142607690042 24219022671055626321111109370544217506941658960408 07198403850962455444362981230987879927244284909188 84580156166097919133875499200524063689912560717606 05886116467109405077541002256983155200055935729725 71636269561882670428252483600823257530420752963450""" y=[] for i in range(0,len(x)): #String is now in a string list if x[i]!='': y.append(x[i]) print(y[i]) print(len(x))

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• actionscript calling javascript with Security Exception

  - by Jeffrey Chee

  I have a swf hosted at domain A, and I have a html at domain B My swf is able to be loaded from accessing the html at domain B. However, the swf gets a SecurityError: Error #2060: Security sandbox violation: ExternalInterface caller http://domainA.com/TrialApp.swf cannot access http://DomainB.com/. The as3 is just the below: ExternalInterface.call("javascript:_invite();"); I've also loaded the crossdomain policy file from Domain B during initialization. Security.loadPolicyFile( "http://DomainB/crossdomain.xml" ); How do I go about solving this? in my html, I have allowscriptaccess='always' Thanks in Advance

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• Embedding Facebook in an IFrame

  - by Matthew Kruskamp

  I have an app that has an IFrame with a page flash overly allowing you to draw on webpages. When I go to Facebook with the application, an overlay pops up covering everything at 50% opacity (Which is fine). The problem is that the overlay is all black in some installations of IE7. Can anyone advise on how to get around this? Here is the code that they have that does this. <div style="z-index: 1000001; position: absolute; filter: alpha(opacity = 50); WIDTH: 9999px; background: black; height: 9999px; top: 0px; left: 0px; opacity: 0.5;" onclick="top.location.href=window.location.href"/> Is there something I can do with meta tags or something to get the filter alpha to work correctly?

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• Which collection interface should I use in .NET for COM-interop?

  - by jhominal

  That is a followup from my previous question, but you don't need to read it to understand that one. I'm designing an interface in .NET that would be consumed from COM applications (mainly VB6, but Visual C++ 6 is also a possibility) and I would like to use Collection types as argument and return types for the methods in the interface. Questions: What happens to the VB6 built-in collection types (arrays, collections, dictionaries) when they go through interop? My current guess is that: arrays - System.Array collections - Microsoft.VisualBasic.Collection dictionaries - System.Collections.Hashtable Is that correct? Which interfaces should I use as return types? IEnumerable, ICollection, IList, IDictionary? Would I be able to do a For Each in VB6 to iterate over these interfaces? Should I use the generic or non-generic variants of the interfaces?

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• Faking a dynamic schema in Core Data?

  - by Gouldsc

  From reading the Apple Docs on Core Data, I've learned that you should not use Core Data when you need a dynamic schema. If I wanted to provide the user the ability to create their own properties, in a core data model would it work if I created some "dummy" attributes like "custom decimal 1", "custom decimal 2", "custom text 1", "custom text 2" etc that the user could name and use for their own purposes? Obviously this won't work for relationships, but for simple properties it seems like a reasonable workaround. Will creating a bunch of dummy attributes on my entities that go unused by most users noticeably decrease performance for them? Have any of you tried something like this? Thanks!

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• Custom Icon for Marker Clusterer

  - by Nyxynyx

  I am using Marker Clusterer library for Google Maps API V3. Now that I have the clusterer working, I want to change the default icon to a custom one. Prorblem: When I try to set the style property of the marker clusterer, the default icon still appears. Where did I go wrong? JS Code // Marker Clusterer var styles = {styles: [{ height: 53, url: "http://localhost/mywebsite/images/template/markers/cluster.png", width: 53 }, { height: 56, url: "http://google-maps-utility-library-v3.googlecode.com/svn/trunk/markerclusterer/images/m2.png", width: 56 }, { height: 66, url: "http://google-maps-utility-library-v3.googlecode.com/svn/trunk/markerclusterer/images/m3.png", width: 66 }, { height: 78, url: "http://google-maps-utility-library-v3.googlecode.com/svn/trunk/markerclusterer/images/m4.png", width: 78 }, { height: 90, url: "http://google-maps-utility-library-v3.googlecode.com/svn/trunk/markerclusterer/images/m5.png", width: 90 }]}; var mcOptions = {gridSize: 50, maxZoom: 15, styles: styles[styles]}; mc = new MarkerClusterer(map, [], mcOptions);

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• File version maintainence via PHP FTP?

  - by Michael

  Currently I'm working on a "plugin" that will be installed on many different sites and I was wondering on the best way for me to maintain the file version of this "plugin". Here's what I was thinking. Have a "master copy" of the plugin on a server, then connect via FTP to the target sites and upload the copy to their site overwriting whatever files they may have. I was wondering the best way to go about this. The "plugin" will have many different folders and files so transferring one file at a time will be too tedious. Is there a way to copy an entire folder over at a time? Or even better, is there a way to recurse through the folders and checking for file difference before uploading the new file? This is to make sure we are uploading a new file and not just the same one.

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• Perl: catch error without die

  - by Pmarcoen

  I'm playing around with error handling and got a little problem. I connect with a database using the DBI module. I do my own error handling by using a subroutine that I call upon an error. I can catch my own dies and handle them just fine but when my database connection fails, the DBI module apparently prints out it's own die : DBI connect(...) failed: ORA-12154: TNS:could not resolve the connect identifier specified (DBD ERROR: OCIServerAttach) at ... How would I go about catching this ? I tried using $SIG{DIE} like so : local $SIG{__DIE__} = sub { my $e = shift; print "Error: " .$e; }; This is on the bottom of my main file, in this file I also call the connect subroutine that is available in a module of my own. I also tried putting this piece of code on the bottom of my module but it still prints the error without the "Error:" in front of it.

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• How do you implement Software Transactional Memory?

  - by Joseph Garvin

  In terms of actual low level atomic instructions and memory fences (I assume they're used), how do you implement STM? The part that's mysterious to me is that given some arbitrary chunk of code, you need a way to go back afterward and determine if the values used in each step were valid. How do you do that, and how do you do it efficiently? This would also seem to suggest that just like any other 'locking' solution you want to keep your critical sections as small as possible (to decrease the probability of a conflict), am I right? Also, can STM simply detect "another thread entered this area while the computation was executing, therefore the computation is invalid" or can it actually detect whether clobbered values were used (and thus by luck sometimes two threads may execute the same critical section simultaneously without need for rollback)?

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• how to bind selected users

  - by kumar

  I used this code to select top 5 users from jquery grid on button click.. $('#myButton').click(function() { $('#Grid input[type=checkbox]:lt(5)').attr('checked','checked'); }); its working fyn if I click the button its checking the check boxes.. my work is after checkin any box if I click other button send the selected user need to go to other page.if not pop up message to selct atleast one user.. the above code I implemented its checking fyn but if i click send its saying pop up mesage is that do i need to bind again to the grid? or what do i need to do? thanks

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• "Disabled use of AcceptEx() WinSock2 API" error on Windows 7 using Tomcat

  - by Richard

  When starting Tomcat 6 on Windows 7 Enterprise with JRE 6 using C:\Program Files\Apache Software Foundation\Tomcat 6.0\bin\tomcat6.exe the application does not open and my event viewer has the message: "Disabled use of AcceptEx() WinSock2 API." The same installer of Tomcat worked on Windows Vista before I upgraded my operating system. Can anyone please suggest a way to fix this? The only site I can find mentioning this is http://www.apachelounge.com/viewtopic.php?p=4418 which suggests using this config setting "Win32DisableAcceptEx" - but it's for Apache, not Tomcat, and I have no idea where in what config file it might need to go in Tomcat.

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