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• Embeddable forum software

  - by Rented

  I am in the planning stages of a specific subject matter community web site, and one feature I feel is required is that of member discussions. However, not in a typical forum style. For example, I don't want the members to have to navigate away from their own "user space" in order to discuss a topic. I think it is best described with an analogous example. Lets say the site is for literature buffs, and each member has a set of pages for keeping notes, progress, questions, etc. on books they are studying/reading. So Joe will have one page for Great Expectations, another for Hamlet, a third for I, Robot, and so forth. Likewise, Jane will have a page for Don Quixote, Lord of the Flies, and also I, Robot. Now, wouldn't it be nice if Joe and Jane could discuss I, Robot from within their own respective pages? Now, at first thought, roll your own seems like the way to go. However, once we start getting into issues such as spam blocking, banning, ratings, pruning, archiving, flooding and so on, well "roll your own" doesn't sound too appealing anymore. Also, I have next to zero experience with forum software. So I'm looking for forum software that has an extensive API or is generally very integration-friendly. I would like to be able to create user groups, topics, permissions, etc. programmatically,as well as the obvious user authentication (most seem open in that respect). The site will most probably be built with Java. Tangler seems like a descent option, but it seems less mature than what I'd prefer.

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• Is it possible to make a non-nullable column nullable when used in a view? (sql server)

  - by Matt

  Hi, To start off I have two tables, PersonNames and PersonNameVariations. When a name is searched, it finds the closest name to one of the ones available in PersonNames and records it in the PersonNameVariations table if it's not already in there. I am using a stored proc to search the PersonNames for a passed in PersonNameVariationand return the information on both the PersonName found and the PersonNameVariation that was compared to it. Since I am using the Entity Framework, I needed return a complex type in the Import Function but for some reason it says my current framework doesn't support it. My last option was to use an Entity to return in my stored proc instead. The result that I needed back is the information on both the PersonName that was found and the PersonNameVariation that was recorded. Since I cannot return both entities, I created a view PersonSearchVariationInfo and added it into my Entity Framework in order to use it as the entity to return. The problem is that the search will not always return a Person Name match. It needs to be able to return only the PersonNameVariation data in some cases, meaning that all the fields in the PersonSearchVariationInfo pertaining to PersonName need to be nullable. How can I take my view and make some of the fields nullable? When I do it directly in the Entity Framework I get a mapping error: Error 4 Error 3031: Problem in mapping fragments starting at line 1202:Non-nullable column myproject_vw_PersonSearchVariationInfo.DateAdded in table myproject_vw_PersonSearchVariationInfo is mapped to a nullable entity property. C:\Users\Administrator\Documents\Visual Studio 2010\Projects\MyProject\MyProject.Domain\EntityFramework\MyProjectDBEntities.edmx 1203 15 MyProject.Domain Anyone have any ideas? Thanks, Matt

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• Problem creating simple "windows script components" on Windows 7.

  - by Bigtoe

  Hi folks, I'm trying to get a Windows Script Component working on and x64 development machine. Works fine on x32 bit. But can't seem to get it running, I have the same problem with both JScript and VBScript. Here's the most simple wsc component possible. All that it does it pop up "Hello" in a message box. If you save the snippit below to a file called test_lib.wsc, you'll then be able to right click and register it. It's now available as a COM Component. <?xml version="1.0"?> <component> <?component error="true" debug="true"?> <registration description="Test Script Library" progid="TestScript.Lib" version="1.00" classid="{314042ea-1c42-4865-956f-08d56d1f00a8}" > </registration> <public> <method name="Hello"> </method> </public> <script language="VBScript"> <![CDATA[ Option Explicit Function Hello() MsgBox("Hello.") End Function ]]> </script> </component> Next create the following sample vb-script and save it to a file called test.vbs dim o set o = createobject("TestScript.Lib") o.hello() When I run the test.vbs with cscript or wscript I always get the following. "C:\test.vbs(3, 1) Microsoft VBScript runtime error: ActiveX component can't create object: 'TestScript.Lib'" This works perfectly fine on a 32 bit XP. Anyone got any ideas about what could be wrong? Thanks a bunch Noel.

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• How can I attach a Silverlight OOB to a Winforms panel?

  - by JohnMcCon

  Summary: I want the prettiness of Silverlight/WPF in part of my current Winforms application. The application can only have access to the full .NET Framework 2.0, no more and no less. The only possibility I can think of is a Silverlight OOB application that utilizes Com+ Automation but I can't figure out how to attach the Silverlight application to a panel within the parent Winforms application. Details: I currently have a winforms application, and want to take advantage of the improved GUI features in WPF but to many of my users are still running .Net Framework 2.0 and refuse to update to 3+. So WPF is not an option for me. I know Silverlight is just a subset of WPF, but it has most of the features I'm looking for and only requires the Silverlight plug-in. I've read about Silverlight 4's Com+ Automation, which would give me access to the full desktop .Net Framework 2.0 (which I need). In order for Com+ Automation to work in Silverlight I need elevated trust and the only way I can find to gain elevated trust is to make my Silverlight application Out-Of-Browser (OOB). My problem is that the OOB application seems to run in its own container window and I need the Silverlight application embedded inside a panel in my Winforms application. My Winforms application does not need to communicate with the Silverlight application and vice-versa, this is purely to have everything contained and displayed in one window. If there is another way to get my desired result that I have not thought of feel free to suggest it.

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• C# Menu Toolstrip Get Status

  - by Yeti

  So I have a project where there is some automatic initialization going on through some classes that are created automatically as global variables (deah they are static instances). At a point inside this (it has no relation with the C# GUI for the user, so it isn't derived from any C# class) I need to see if a flag is set or not. I use toolstrip menu with checked and unchecked status in order to set or unset the flag. The problem is that I have difficulties to see if the flag is checked or not from this static class. My class is inside a different project/namespace and a DLL is created what later is linked to the GUI of the application. The GUI depends from this Manager class so making the Manager class to depend from the GUI is not an option. Nevertheless, I should be able to see its state knowing its name or through some other means. I have tried the following: if(Application.OpenForms[1].Owner.Controls["useLocalImageForInitToolStripMenuItem"].Enabled) { }; Now the problem is that on the upper code snippet I get a nasty error. So how do I do this?

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• SCM for Xcode?

  - by Gregor

  I am developing an application for the Mac as a small team (me + another person) effort. We are located in different cities, and have started to see the need for solid source control management. None of us have any experience with this, and both of us are relatively new to Cocoa/Obj-C/Xcode (but do have C knowledge). Does anyone have any recommendations as to which SCM system to choose? I understand that a lot of people are using Subversion, which is also supported in Xcode 3.1. Does anyone have experience with using Subversion through Xcode? Or is it a better option to chose a stand alone GUI alternative, such as Versions? Grateful for any input on this. Gregor Tomasevic, Sweden Update/personal experiences: Since this post, we have tried Versions and Cornerstone (both of which are SVN GUI-clients), as well as Xcodes built-in support for SVN. We were not particularly pleased with Versions, which seemed to have some problems with committing unversioned files/build files. The built-in SVN support in Xcode works quite well, although it probably has limitations that we have still not run into. Cornerstone is both simple to use and powerful, and does not seem to suffer from the problems we encountered with Versions. So far, we have just tried committing, updating repo, checking out latest/previous versions of our files and worked some with file comparison. It might be a whole different ball game once you start working extensively with branching, an area which we have been told both these GUI clients might have some weaknesses in. For what it's worth (and with only days of evaluation) Cornerstone seems to be a somewhat better alternative, although for simpler SCM, Xcode works well too. Thanks for all the comments.

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• Command /Developer/usr/bin/dsymutil failed with exit code 10

  - by Evan Robinson

  I am getting the above error message randomly (so far as I can tell) on iPhone projects. Occasionally it will go away upon either: Clean Restart XCode Reboot Reinstall XCode But sometimes it won't. When it won't the only solution I have found is to take all the source material, import it into a new project, and then redo all the connections in IB. Then I'm good until it strikes again. Anybody have any suggestions? [update 20091030] I have tried building both debug and release versions, both full and lite versions. I've also tried switching the debug symbols from DWARF with external dSYM file to DWARF and to stabs. Clean builds in all formats make no differences. Permission repairs change nothing. Setting up a new user has no effect. Same error on the builds. Thanks for the suggestions! [Update 20091031] Here's an easier and (apparently) reliable workaround. It hinges upon the discovery that the problem is linked to a target not a project In the same project file, create a new target Option-Drag (copy) all the files from the BAD target 'Copy Bundle Resources' folder to the NEW target 'Copy Bundle Resources' folder Repeat (2) with 'Compile Sources' and 'Link Binary With Libraries' Duplicate the Info.plist file for the BAD target and name it correctly for the NEW target. Build the NEW target! [Update 20100222] Apparently an IDE bug, now apparently fixed, although Apple does not allow direct access to the original bug of a duplicate. I can no longer reproduce this behaviour, so hopefully it is dead, dead, dead.

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• Contact-to-hire from the perspective of the headhunter agency?

  - by jamieb

  I operate a small IT consulting firm. One of my clients has expressed an interest in having an ASP.Net programmer on-site at their location for a six-month contract, with an option to hire. I've never really operated my company as a body shop (renting out talent for the long term) and an unfamiliar with how to price my quote. Assume I were to bring on a new developer as a 1099'ed contractor and then contract that person out to my client for the duration of the project. If I'm billing my client $X per hour for this developer's time, what should I be compensating this developer? $X/2 per hour? What's the typical ratio? If the client decides to hire this person at the end of the contract, what should I be compensated? Is it a flat finders fee, or maybe a function of the developer's annual salary? Would there be any advantage to actually hiring the person as a 1040'd employee rather than a 1099 contractor even if I can't offer him benefits? I know other body shops (like Robert Half) do this and never understood why.

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• Display HTML page in Office 2003 or 2007 task pane via VBA

  - by Malcolm

  Is it possible to display an HTML page in an Office 2003 and/or 2007 task pane via VBA? Background: We have a complicated configuration file that our users maintain in Word (using a real editor is not an option for our audience). We would like to create several toolbar buttons that display a basic HTML page in a task pane as a form of online help for our users. The reason we want to use a task pane to display help (vs. an external browser or traditional help engine) is so that the help content is "embedded" in Word vs. displayed via a seperate application. The problem with using a regular browser or help engine to display help is that users have to manually size and position both applications so that they can see them simultaneously and its very easy to "lose" one application when togging between many applications. We don't want to go down the route of writing a VisualStudio based task pane component - we want to keep things simple (KISS) and encapsulate everything in an easy to distribute Word template file (.dot or dotx.). Suggestions?

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• JSF: How to get the selected item from selectOneMenu if its rendering is dynamic?

  - by Dzmitry Zhaleznichenka

  At my view I have two menus that I want to make dependent, namely, if first menu holds values "render second menu" and "don't render second menu", I want second menu to be rendered only if user selects "render second menu" option in the first menu. After second menu renders at the same page as the first one, user has to select current item from it, fill another fields and submit the form to store values in database. Both the lists of options are static, they are obtained from the database once and stay the same. My problem is I always get null as a value of the selected item from second menu. How to get a proper value? The sample code of view that holds problematic elements is: <h:selectOneMenu id="renderSecond" value="#{Bean.renderSecondValue}" valueChangeListener="#{Bean.updateDependentMenus}" immediate="true" onchange="this.form.submit();" > <f:selectItems value="#{Bean.typesOfRendering}" /> </h:selectOneMenu><br /> <h:selectOneMenu id="iWillReturnYouZeroAnyway" value="#{Bean.currentItem}" rendered="#{Bean.rendered}" > <f:selectItems value="#{Bean.items}" /> </h:selectOneMenu><br /> <h:commandButton action="#{Bean.store}" value="#Store" /> However, if I remove "rendered" attribute from the second menu, everything works properly, except for displaying the menu for all the time that I try to prevent, so I suggest the problem is in behavior of dynamic rendering. The initial value of isRendered is false because the default item in first menu is "don't render second menu". When I change value in first menu and update isRendered with valueChangeListener, the second menu displays but it doesn't initialize currentItem while submitting. Some code from my backing bean is below: public void updateDependentMenus(ValueChangeEvent value) { String newValue = (String) value.getNewValue(); if ("render second menu" == newValue){ isRendered = true; } else { isRendered = false; } } public String store(){ System.out.println(currentItem); return "stored"; }

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• Custom Installer class , rollback method never called.

  - by yossi1981

  Hi guys. I am having an installer class , Here is a snippet: [RunInstaller(true)] public partial class ServerWrapInstaller : Installer { public override void Install(IDictionary stateSaver) { EventLog.WriteEntry("Installer", "Install", EventLogEntryType.Information); base.Install(stateSaver); } public override void Commit(IDictionary savedState) { EventLog.WriteEntry("Installer", "Commit", EventLogEntryType.Information); base.Commit(savedState); } public override void Rollback(IDictionary savedState) { EventLog.WriteEntry("Installer", "Rollback", EventLogEntryType.Information); base.Rollback(savedState); } public override void Uninstall(IDictionary savedState) { EventLog.WriteEntry("Installer", "UnInstall", EventLogEntryType.Information); base.Uninstall(savedState); } } Now i start the installation in full GUI mode and then click the "Cancel" button in the middle of the process causing the installation to roll back. The problem is that the RollBack method is not called. I don't see the expected entry in the event log. I want to mention that if i let the installation to complete , I do see the "Install" message in the event log and If i then uninstall , I see the "uninstall" message in the event log. But if stop the installtion process in the middle , by pressing the "cancel" button , I do see the progress bar going backward , but the rollback method is not called. what am I doing wrong ? thanks in advance for any help. Edit: Providing more details... The installer is an MSI package. The package is built in vs2009 using a setup project. The installer class is used as a custom action by the setup project. Since this is a MSI Package I have an option to run it in silent mode or in user-interactive more . When I wrote "Full GUI mode" , I ment User-Interactive mode.

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• Bulk Copy from one server to another

  - by Joseph

  Hi All, I've one situation where I need to copy part of the data from one server to another. The table schema are exactly same. I need to move partial data from the source, which may or may not be available in the destination table. The solution I'm thinking is, use bcp to export data to a text(or .dat) file and then take that file to the destination as both are not accessible at the same time (Different network), then import the data to the destination. There are some conditions I need to satisfy. 1. I need to export only a list of data from the table, not whole. My client is going to give me IDs which needs to be moved from source to destination. I've around 3000 records in the master table, and same in the child tables too. What I expect is, only 300 records to be moved. 2. If the record exists in the destination, the client is going to instruct as whether to ignore or overwrite case to case. 90% of the time, we need to ignore the records without overwriting, but log the records in a log file. Please help me with the best approach. I thought of using BCP with query option to filter the data, but while importing, how do I bypass inserting the existing records? If I need to overwrite, how to do it? Thanks a lot in advance. ~Joseph

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• Obtaining MAC address

  - by rink.attendant.6

  According to Obtain client MAC address in ASP.NET Application, it is not possible. I am not entirely convinced because whenever I connect to Tim Hortons WiFi, my MAC address is known. Occasionally, the network is slow and I see this URL like this before being redirected to the Connect page: http://timhortonswifi.com/cp/tdl3/index.asp ?cmd=login &switchip=172.30.129.73 &mac=60:6c:66:17:1a:83 &ip=10.40.66.229 &essid=Tim%20Hortons%20WiFi &apname=TDL-ON-NEP-02177-WAP1 &apgroup=02177 &url=http%3A%2F%2Fweather%2Egc%2Eca%2Fcity%2Fpages%2Fon-72_metric_e%2Ehtml So according to this URL, the site knows the IP address of the router, my MAC address, the IP address assigned to my device by the router, the network SSID, some other pieces of information, and the URL I was trying to access prior to connecting. There's two options: Tim Hortons WiFi Basic and Tim Hortons WiFi Plus, where the "Plus" option allows me to connect to any Tim Hortons WiFi access point in Canada automatically with this device. Registration requires an email address, so I'm assuming this is possible by checking the MAC address and storing it in a database that routers ping upon connection. More info here. According to the extension of this page, I can safely assume it is ASP. How are they obtaining this information?

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• Prevent full table scan for query with multiple where clauses

  - by Dave Jarvis

  A while ago I posted a message about optimizing a query in MySQL. I have since ported the data and query to PostgreSQL, but now PostgreSQL has the same problem. The solution in MySQL was to force the optimizer to not optimize using STRAIGHT_JOIN. PostgreSQL offers no such option. Here is the explain: Here is the query: SELECT avg(d.amount) AS amount, y.year FROM station s, station_district sd, year_ref y, month_ref m, daily d LEFT JOIN city c ON c.id = 10663 WHERE -- Find all the stations within a specific unit radius ... -- 6371.009 * SQRT( POW(RADIANS(c.latitude_decimal - s.latitude_decimal), 2) + (COS(RADIANS(c.latitude_decimal + s.latitude_decimal) / 2) * POW(RADIANS(c.longitude_decimal - s.longitude_decimal), 2)) ) <= 50 AND -- Ignore stations outside the given elevations -- s.elevation BETWEEN 0 AND 2000 AND sd.id = s.station_district_id AND -- Gather all known years for that station ... -- y.station_district_id = sd.id AND -- The data before 1900 is shaky; insufficient after 2009. -- y.year BETWEEN 1980 AND 2000 AND -- Filtered by all known months ... -- m.year_ref_id = y.id AND m.month = 12 AND -- Whittled down by category ... -- m.category_id = '001' AND -- Into the valid daily climate data. -- m.id = d.month_ref_id AND d.daily_flag_id <> 'M' GROUP BY y.year It appears as though PostgreSQL is looking at the DAILY table first, which is simply not the right way to go about this query as there are nearly 300 million rows. How do I force PostgreSQL to start at the CITY table? Thank you!

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• Sharepoint OLE DB - field not updateable

  - by Pandincus

  I need to write a simple C# .NET application to retrieve, update, and insert some data in a Sharepoint list. I am NOT a Sharepoint developer, and I don't have control over our Sharepoint server. I would prefer not to have to develop this in a proper sharepoint development environment simply because I don't want to have to deploy my application on the Sharepoint server -- I'd rather just access data externally. Anyway, I found out that you can access Sharepoint data using OLE DB, and I tried it successfully using some ADO.NET: var db = DatabaseFactory.CreateDatabase(); DataSet ds = new DataSet(); using (var command = db.GetSqlStringCommand("SELECT * FROM List")) { db.LoadDataSet(command, ds, "List"); } The above works. However, when I try to insert: using (var command = db.GetSqlStringCommand("INSERT INTO List ([HeaderName], [Description], [Number]) VALUES ('Blah', 'Blah', 100)")) { db.ExecuteNonQuery(command); } I get this error: Cannot update 'HeaderName'; field not updateable. I did some Googling and apparently you cannot insert data through OLE DB! Does anyone know if there are some possible workarounds? I could try using Sharepoint Web Services, but I tried that initially and was having a heck of a time authenticating. Is that my only option?

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• apache: cgi links lead to a "you have chosen to open foo.cgi", although scriptalias is set

  - by Xiong Chiamiov

  Following this guide on CentOS 5.2, just getting nagios set up for the first time. The main page shows up just fine, but when I try to view any of the pages that should be generated by a cgi process, firefox prompts me to save the .cgi instead, so apache's obviously not understanding that it needs to run the cgi and get back some html from it. The odd thing is, though, that, as far as I can tell, apache should be running these files as cgi. nagios.conf: # SAMPLE CONFIG SNIPPETS FOR APACHE WEB SERVER # Last Modified: 11-26-2005 # # This file contains examples of entries that need # to be incorporated into your Apache web server # configuration file. Customize the paths, etc. as # needed to fit your system. ScriptAlias /nagios/cgi-bin/ "/usr/lib/nagios/cgi/" # SSLRequireSSL Options +ExecCGI AddHandler cgi-script .cgi AllowOverride None Order allow,deny Allow from all # Order deny,allow # Deny from all # Allow from 127.0.0.1 AuthName "Nagios Access" AuthType Basic AuthUserFile /etc/nagios/htpasswd.users Require valid-user Alias /nagios "/usr/share/nagios/" # SSLRequireSSL DirectoryIndex index.php Options None AllowOverride None Order allow,deny Allow from all # Order deny,allow # Deny from all # Allow from 127.0.0.1 AuthName "Nagios Access" AuthType Basic AuthUserFile /etc/nagios/htpasswd.users Require valid-use Either the ScriptAlias directive or ExecCGI option should be triggering this, but neither of them seems to have any effect. This config file is being parsed by apache, because if I move it out of conf.d, /nagios gives a 404. The .cgi files are indeed in the /nagios/cgi-bin/ directory, so I didn't specify the incorrect directory. Searching seemed to only provide people who had difficulty with permissions, which is not the issue here. This seems to me to be a pretty basic thing, but even with the excellent apache documentation, I'm at a bit of a loss (been using cherokee too much lately :) ).

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• M2Crypto doesn't install in venv, or swig doesn't define __x86_64__ which breaks compiling against OpenSSL

  - by Lorin Hochstein

  I'm trying to install the Python M2Crypto package into a virtualenv on an x86_64 RHEL 6.1 machine. This process invokes swig, which fails with the following error: $ virtualenv -q --no-site-packages venv $ pip install -E venv M2Crypto==0.20.2 Downloading/unpacking M2Crypto==0.20.2 Downloading M2Crypto-0.20.2.tar.gz (412Kb): 412Kb downloaded Running setup.py egg_info for package M2Crypto Installing collected packages: M2Crypto Running setup.py install for M2Crypto building 'M2Crypto.__m2crypto' extension swigging SWIG/_m2crypto.i to SWIG/_m2crypto_wrap.c swig -python -I/usr/include/python2.6 -I/usr/include -includeall -o SWIG/_m2crypto_wrap.c SWIG/_m2crypto.i /usr/include/openssl/opensslconf.h:31: Error: CPP #error ""This openssl-devel package does not work your architecture?"". Use the -cpperraswarn option to continue swig processing. error: command 'swig' failed with exit status 1 Complete output from command /home/lorin/venv/bin/python -c "import setuptools;__file__='/home/lorin/venv/build/M2Crypto/setup.py';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --single-version-externally-managed --record /tmp/pip-BFiNtU-record/install-record.txt --install-headers /home/lorin/venv/include/site/python2.6: I've got OpenSSL 1.0.0 installed via RPM packages from RedHat. The part of /usr/include/openssl/opensslconf.h that causes the error looks like this: #if defined(__i386__) #include "opensslconf-i386.h" #elif defined(__ia64__) #include "opensslconf-ia64.h" #elif defined(__powerpc64__) #include "opensslconf-ppc64.h" #elif defined(__powerpc__) #include "opensslconf-ppc.h" #elif defined(__s390x__) #include "opensslconf-s390x.h" #elif defined(__s390__) #include "opensslconf-s390.h" #elif defined(__sparc__) && defined(__arch64__) #include "opensslconf-sparc64.h" #elif defined(__sparc__) #include "opensslconf-sparc.h" #elif defined(__x86_64__) #include "opensslconf-x86_64.h" #else #error "This openssl-devel package does not work your architecture?" #endif gcc has the right variable defined: $ echo | gcc -E -dM - | grep x86_64 #define __x86_64 1 #define __x86_64__ 1 But apparenty swig doesn't, since this is the line that's failing: swig -python -I/usr/include/python2.6 -I/usr/include -includeall -o \ SWIG/_m2crypto_wrap.c SWIG/_m2crypto.i Is there a way to fix this by changing something in my system configuration? M2Crypto gets installed in a virtualenv as part of a larger script I don't control, so avoiding mucking around with the M2Crypto files would be a good thing.

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• How to disable Power off/Power on sound on Android phone? [closed]

  - by yvolk

  My Android phone (Android v.2.1) produces loud sound both before Power off and after Power on (boot) is being completed. I don't want to turn the sound off before reboot/powering it off and to turn sound on after reboot every time I'm restarting my phone. I just want to get rid of these sounds forever :-) How can I do this (maybe executing some script, changing some properties... preferably without rooting my phone)? Update: Thank you Christopher Orr! I've also found some information that partially allows to achieve what I'm looking for (on androidforums.com): "if you are going into SettingsSound & displayNotification ringtone that sets your notification tone for app updates, power on (rebooting) etc. If you want to change notification for messages you would have to go into messaging and then hit the menu key for notification option. You can do the same for email accounts as well." So I disabled Power on/off sounds (plus something else... but I didn't notice undesired side effect yet...) with built-in settings.

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• Is this error caused by a 64-bit library being accessed by a Java program running in a 32-bit JVM?

  - by Mike

  I'm trying to create a simple Java app that uses JNI to call some native functions. I've followed the examples in the JNI Programming Guide and can't seem to get them to work. I have the following Hello World program, written in Java: class HelloWorld { private native void print(); public static void main(String [] args) { new HelloWorld().print(); } static { System.load("/home/mike/Desktop/libHelloWorld.so"); } } I compile it using javac HelloWorld.java, just like normal. Then I run javah -jni HelloWorld, and finally the following: gcc34 -shared -fpic -o libHelloWorld.so -I/<path to JDK>/include -I/<path to JDK>/include/linux HelloWorld.c gcc34 is the name of the GCC program on my machine here at work (I don't control that) and I obviously place the real path to the JDK in that command. When I run my program, using the standard java HelloWorld, I get an error saying the following: Exception in thread "main" java.lang.UnsatisfiedLinkError: /home/mike/Desktop/libHelloWorld.so: /home/mike/Desktop/libHelloWorld.so: wrong ELF class: ELFCLASS64 (Possible causes: architecture word width mismatch) at java.lang.ClassLoader$NativeLibrary.load(Native Method) at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1778) at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1674) at java.lang.Runtime.load0(Runtime.java:770) at java.lang.System.load(System.java:1003) at HelloWorld.<clinit>(HelloWorld.java:8) Could not find the main class: HelloWorld. Program will exit. I know I'm running a 32-bit JVM (and unfortunately, as of right now, I'm not allowed to get a 64-bit JVM). I tried telling GCC to compile in 32-bit mode using the "-m32" option, but we don't have (and again, can't get) what we need for that. Does this sound like a 32/64-bit conflict or something else?

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• MSI wrapper for msdeploy?

  - by Nate

  Just moved to vs2010 and found that deployment is quite different. The old way I did things (vs2008) was as follows: 1) I right-click on my web app and "Add web deployment project" 2) Start a web setup project, dump that web deployment project output in it, and add any custom installer actions (connection strings or other user input) as necessary using the custom installer class. Easy! Now that I don't have the "Add web deployment project" option (or can't find it!?!?), msdeploy seems to be the thing to do. I have successfully got this to work via command line, but I still need some custom actions. In this example, we have separated our web services deployment from our UI deployment (Silverlight) so that they can be hosted separately or together. So... during/after install I need to know from the user where the web services are located. So I tried this: 1) Start a web setup project, and include all of the deploy package files (.deploy.cmd, /setparameters.xml, etc) 2) Gather user input in my custom installer class, and shell execute the deploy.cmd. Problem is... the deploy fails on deleting the zip file since it's use by another process (I assume it's my installer). Anyone have any ideas on how to get around this? Or is there a better way to accomplish this task? Any input would be appreciated! Nate

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• Suggestions for entering mobile development -- pure iPhone SDK, Android SDK, Mono Touch or Titanium

  - by Tom Cabanski

  I am entering mobile development. I have been working primarily in .NET since 1.0 came out in beta. Before that, I was mostly a C++ and Delphi guy and still dabble in C++ from time to time. I do web apps quite a bit so I am reasonably proficient with Javascript, JQuery and CSS. I have also done a few Java applications. I started web programming with CGI and live mostly in the ASP.NET MVC world these days. I am trying to decide on which platform/OS and tool to select. I am concerned with the size of the market available for my applications as well as the marketibility of the skills I will pick up. The apps I have in mind would work on both phones and pads. Some aspects of what I have in mind will play better on the bigger screens that will be available on pads. Here are the options I am considering: Apple iPhone/iPad using pure Apple SDK (Objective-C) Apple iPhone/iPad using Mono Touch (C#) Android using pure Android SDK (Java) Multiple platforms using something like Titanium to generate native apps from web technologies (HTML, CSS and Javascript) Multiple platforms using HTML5 web applications that run in the browser (HTML, CSS and Javascript). Which option would you choose? Do you have a different suggestion? What are the pros and cons?

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• ASP.NET MVC 4 async child action

  - by ShadowChaser

  I have an ASP.NET MVC 4 application targeting .NET 4.5. One of our child actions makes a call out to a web service using HttpClient. Since we're blocking on IO waiting for the HttpClient response, it makes a great deal of sense to convert the code to the async/await pattern. However, when MVC 4 attempts to execute the child action, we get the following error message: HttpServerUtility.Execute blocked while waiting for an asynchronous operation to complete. At first glance, it appears as though MVC 4 does not support async/await within a child action. The only remaining option is to run using synchronous code and force a "Wait" on the async task. As we all know, touching .Result or .Wait() on an async task in an ASP.NET context will cause an immediate deadlock. My async logic is wrapped in a class library, so I can't use the "await blah.ConfigureAwait(false)" trick. Remember, tagging "async" on the child action and using await causes an error, and that prevents me from configuring the await. I'm painted into a corner at this point. Is there any way to consume async methods in an MVC 4 child action? Seems like a flat out bug with no workarounds.

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• linking to boost regex in gcc

  - by rboorgapally

  i am trying to compile my program which uses regex on linux. I built the boost library in the libs/regex/build by typing make -fgcc.mak which created a directory gcc which contains the following four files boost_regex-gcc-1_35 boost_regex-gcc-d-1_35 libboost_regex-gcc-1_35.a libboost_regex-gcc-d-1_35.a Now I want to use regex from my program which is in some arbitrary directory. I #included boost/regex.hpp I got the error which stated that regex.hpp is not found. Then I gave the -I option in the g++ compiler. I didn't get that error. But I get the following error undefined reference to `boost::re_detail::perl_matcher<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, std::allocator<boost::sub_match<__gnu_cxx::__normal_iterator<char const*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >, boost::regex_traits<char, boost::cpp_regex_traits<char> > >::construct_init(boost::basic_regex<char, boost::regex_traits<char, boost::cpp_regex_traits<char> > > const&, boost::regex_constants::_match_flags)' I googled and found that I need to somehow link one of the above 4 libraries to my program. How can I do it. Which one should I link and why?

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• gnuplot: display only the roots.

  Hi, Gnuplot, a great package ... I'm in love with it. But we can have our tiffs as well, as any couple :-) This time, I wanted to simply plot the roots of an equation: say a quadratic to keep things simple. However, I only want two nice round dots appearing on the x-axis representing the point where the quadratic crosses the x-axis or y=0 axis. In other words the roots (when they are real that is). I don't want to do this with datafile ... I want gnuplot to calculate the roots and plot them. First off, my attempts: single points aren't really what gnuplot would have you plot, it likes a good wide range of values. Preferably filling up the whole width of your canvas. It's possible to locate a rectangle at a certain coordinate on your plot, but I wanted a round point. Currently I'm chasing up how to do a tiny filled polygon at that point. I have tried the "samples" option bu it doesn't seem useful. Also though about defining a dirac-delta function so that only one point would be highlighted (though two would be needed). ANy suggestions welcome, thanks.

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• jquery slideshow/cycle with easing not working

  - by Blankman

  Here is my code, for some reason it isn't working when I add the easing option. It works fine with 'fade'. <script src="jquery.easing.1.3.js" type="text/javascript"></script> <script src="jquery.cycle.all.min.js" type="text/javascript"></script> <style> .pics { height: 383px; width: 582px; padding: 0; margin: 0; } .pics img { padding: 15px; border: 1px solid #ccc; background-color: #eee; width: 550px; height: 350px; top: 0; left: 0 } </style> <div id="cycle" class="pics"> <img src="/images/1.png" width="550" height="350" /> <img src="/images/2.jpg" width="550" height="350"/> </div> <script type="text/javascript"> $().ready(function() { $('#cycle').cycle({ fx: 'scrollDown', easing: 'bounceout', delay: -2000 }); }); </script> Is there something else I have to do, to tell the cycle plugin I have easing?

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