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• C# - Silverlight - CustomAttribute with Enum

  - by cmaduro

  I have the following class: [MetadataAttribute] [AttributeUsage(AttributeTargets.Property, AllowMultiple = false)] public class ModuleActivationButtonAttribute : ExportAttribute { public Enum TargetRegion { get; set; } public ModuleActivationButtonAttribute(Enum targetRegion) : base(typeof(IModuleActivationButton)) { TargetRegion = targetRegion; } } The class compiles fine, but when I decorate my property with it: [ModuleActivationButton(Regions.Tabs)] public IModuleActivationButton ModuleActivationButton { get { return new ModuleActivationButton() as IModuleActivationButton; } set { ModuleActivationButton = value; } } public enum Regions { Content, Tabs } The compiler spits out: Error 1 An attribute argument must be a constant expression, typeof expression or array creation expression of an attribute parameter type C:\...\Manpower4U.Modules.Home\HomeModule.cs 28 33 Manpower4U.Modules.Home

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• how to get trac to run with apache?

  - by ajsie

  i have some problems getting trac to be running with apache. have no idea of how to do and the tutorial i followed doesnt work. i have an empty /etc/apache2/httpd.conf. should it be empty? then i followed the tutorial (http://trac.edgewall.org/wiki/TracModPython) and typed in: LoadModule python_module modules/mod_python.so so now it contains one row. i have ubuntu and i installed mod_python with: apt-get install libapache2-mod-python libapache2-mod-python-doc however, when i run a2enmod mod_python it says: ERROR: Module mod_python does not exist! but i have checked that it exists in /usr/lib/apache2/modules/mod_python.so. so whats the problem?

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• How do I reduce number of redundant requests with mod_perl properly?

  - by rassie

  In a fairly big legacy project, I've refactored several hairy modules into Moose classes. Each of these modules requires database access to (lazy) fetch its attributes. Since those objects are used pretty heavily, I want to reduce the number of redundant requests, for example for unchanged data. Now, how do I do that properly? I've got several alternatives: Implement caching in my Moose classes via a role to store them in memcached with expiration of 5-10 minutes (probably not too difficult, but tricky with lazy attributes) update: KiokuDB could probably help here, have to read up about attributes Migrate to DBIx::Class (needs to be done anyway) and implement caching on this level (DBIC will probably take most of the pain away just by itself) Somehow make my objects persist inside the mod_perl process (no clue how to do this :() How would you do this and what do you consider a sane way? Is caching data preferred on object or the ORM level?

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• HttpModule Init method is called several times - why?

  - by MartinF

  I was creating a http module and while debugging I noticed something which at first (at least) seemed like weird behaviour. When i set a breakpoint in the init method of the httpmodule i can see that the http module init method is being called several times even though i have only started up the website for debugging and made one single request (sometimes it is hit only 1 time, other times as many as 10 times). I know that I should expect several instances of the HttpApplication to be running and for each the http modules will be created, but when i request a single page it should be handled by a single http application object and therefore only fire the events associated once, but still it fires the events several times for each request which makes no sense - other than it must have been added several times within that httpApplication - which means it is the same httpmodule init method which is being called every time and not a new http application being created each time it hits my break point (see my code example at the bottom etc.). What could be going wrong here ? is it because i am debugging and set a breakpoint in the http module? It have noticed that it seems that if i startup the website for debugging and quickly step over the breakpoint in the httpmodule it will only hit the init method once and the same goes for the eventhandler. If I instead let it hang at the breakpoint for a few seconds the init method is being called several times (seems like it depends on how long time i wait before stepping over the breakpoint). Maybe this could be some build in feature to make sure that the httpmodule is initialised and the http application can serve requests , but it also seems like something that could have catastrophic consequences. This could seem logical, as it might be trying to finish the request and since i have set the break point it thinks something have gone wrong and try to call the init method again ? soo it can handle the request ? But is this what is happening and is everything fine (i am just guessing), or is it a real problem ? What i am specially concerned about is that if something makes it hang on the "production/live" server for a few seconds a lot of event handlers are added through the init and therefore each request to the page suddenly fires the eventhandler several times. This behaviour could quickly bring any site down. I have looked at the "original" .net code used for the httpmodules for formsauthentication and the rolemanagermodule etc but my code isnt any different that those modules uses. My code looks like this. public void Init(HttpApplication app) { if (CommunityAuthenticationIntegration.IsEnabled) { FormsAuthenticationModule formsAuthModule = (FormsAuthenticationModule) app.Modules["FormsAuthentication"]; formsAuthModule.Authenticate += new FormsAuthenticationEventHandler(this.OnAuthenticate); } } here is an example how it is done in the RoleManagerModule from the .NET framework public void Init(HttpApplication app) { if (Roles.Enabled) { app.PostAuthenticateRequest += new EventHandler(this.OnEnter); app.EndRequest += new EventHandler(this.OnLeave); } } Do anyone know what is going on? (i just hope someone out there can tell me why this is happening and assure me that everything is perfectly fine) :) UPDATE: I have tried to narrow down the problem and so far i have found that the Init method being called is always on a new object of my http module (contary to what i thought before). I seems that for the first request (when starting up the site) all of the HttpApplication objects being created and its modules are all trying to serve the first request and therefore all hit the eventhandler that is being added. I cant really figure out why this is happening. If i request another page all the HttpApplication's created (and their moduless) will again try to serve the request causing it to hit the eventhandler multiple times. But it also seems that if i then jump back to the first page (or another one) only one HttpApplication will start to take care of the request and everything is as expected - as long as i dont let it hang at a break point. If i let it hang at a breakpoint it begins to create new HttpApplication's objects and starts adding HttpApplications (more than 1) to serve/handle the request (which is already in process of being served by the HttpApplication which is currently stopped at the breakpoint). I guess or hope that it might be some intelligent "behind the scenes" way of helping to distribute and handle load and / or errors. But I have no clue. I hope some out there can assure me that it is perfectly fine and how it is supposed to be?

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• A metaphor for Drupal module's inner workings

  - by PHP thinker

  What is the best application workflow metaphor for Drupal module? In PHP frameworks we think MVC-style. How do we think inside Drupal? Asumming I am writing some user-oriented module like Shop, Catalog or Forum. As far as I understand there are no or few MVC based modules. Should I generally treat Drupal modules (as sub-application) as a number of screens connected via forms and hyperlinks or there is a better way. My question may be a little bit speculative, but I hope someone will share my intent to think models, not just "scripts".

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• Maven SVN checkout example

  - by c0mrade

  Concerning my previous question - http://stackoverflow.com/questions/2622191/is-there-a-svn-maven , I went trough usage page - http://maven.apache.org/scm/maven-scm-plugin/usage.html didn't found quite what I was looking for, here what I would like to do : Checkout list of projects which I specify for ex : http://mysvnurl/myprojectname where I could parametrize the project name Then lets say if there is 3-4 or n number of sub-projects(modules)(for which I can specify the names as well) that I want to checkout, and that I could specify branch(trunk) and revision. To simplify : Checkout certain sub-projects(modules) trunk of myprojectname Ex : http://mysvnurl/myprojectname/project1/trunk/* // get everything http://mysvnurl/myprojectname/project2/trunk/* // get everything How would I do that with maven, can someone with more expirience explain how to do this or point me to somewhere where I can read how to, I've googled nothing specific to my needs. Thank you

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• Ejb lookup failing on WAS7.0 with NamingException

  - by Ayush

  Hi, I have an application developed on RAD using WAS 6.0. I migrated the code to WID 7.0. After making some changes in the EJB modules(Had to remove the bnd.xmi file from each ejb module to deploy the application on Application Server)the application is running fine, but the EJB modules give the following error: NamingException has Occured While Getting Local Home javax.naming.NameNotFoundException:nullName ejb/com/igcc not found in context "local:". I am not able to figure out what changes do it need to make to run the application on WID. Any help is appreciated. Thanks, Ayush

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• SWIG generated code fails to run on PHP 5.3.2 undefined symbol: zend_error_noreturn

  - by wookiebreath

  I have a library that I have been using successfully with PHP 5.1.6 with the help of some wrapper code generated by SWIG (v1.3.40). I have just upgraded to PHP 5.3.2 and I am seeing the following error: PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php/modules/myLib_php.so' - /usr/lib/php/modules/myLib_php.so: undefined symbol: zend_error_noreturn in Unknown on line 0 On investigation it appears that the wrapper code produced by SWIG (myLib_wrap.c) includes calls to the PHP function: zend_error_noreturn and that this function isn't available in PHP 5.3.2? Has anyone seen this issue before? Things seem to work if I manually update the generated code so that instead of calling zend_error_noreturn it just calls zend_error. Is this approach safe?

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• How Does DotNetNuke Stack Up For SEO? E-Commerce?

  - by user326502

  I've heard that DotNetNuke takes a bit of a hit for Search Engine Optimization. I'm not criticizing the platform, by the way; I love DNN. This is just what I've heard. As I understand it, the impact is from repetitive content, table-based layouts, and lots of extra markup. I've got a friend who would like to start an e-commerce site using DNN and some modules from Snowcovered. I was just wondering whether DNN would be a good platform to choose. The idea is attractive because of the ease with which a DNN commerce system can be deployed. Search-engine friendly URLs aren't the problem - the modules do that, it's whether DNN as a whole would be a good platform for this. Thanks very much for any help or advice.

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• Why is Apache seg faulting?

  - by Jamie Howard

  We have a production server that seems to Seg Fault a few times every day. The fault is picked up by Apache and logged in the error log - but there seems to be no traffic around the time. If it's a request generating the fault then it looks like it happens before any other logging is made so I can't see how it's happening so it's very hard to debug. Our setup is Linux 64 bit Centos 5.3 Apache is loaded with the following modules apachectl -t -D DUMP_MODULES | more Loaded Modules: core_module (static) mpm_prefork_module (static) http_module (static) so_module (static) auth_basic_module (shared) auth_digest_module (shared) authn_file_module (shared) authn_alias_module (shared) authn_anon_module (shared) authn_dbm_module (shared) authn_default_module (shared) authz_host_module (shared) authz_user_module (shared) authz_owner_module (shared) authz_groupfile_module (shared) authz_dbm_module (shared) authz_default_module (shared) ldap_module (shared) authnz_ldap_module (shared) include_module (shared) log_config_module (shared) logio_module (shared) env_module (shared) ext_filter_module (shared) mime_magic_module (shared) expires_module (shared) deflate_module (shared) headers_module (shared) usertrack_module (shared) setenvif_module (shared) mime_module (shared) dav_module (shared) status_module (shared) autoindex_module (shared) info_module (shared) dav_fs_module (shared) vhost_alias_module (shared) negotiation_module (shared) dir_module (shared) actions_module (shared) speling_module (shared) userdir_module (shared) alias_module (shared) rewrite_module (shared) proxy_module (shared) proxy_balancer_module (shared) proxy_ftp_module (shared) proxy_http_module (shared) proxy_connect_module (shared) cache_module (shared) suexec_module (shared) disk_cache_module (shared) file_cache_module (shared) mem_cache_module (shared) cgi_module (shared) version_module (shared) security2_module (shared) unique_id_module (shared) fcgid_module (shared) php5_module (shared) proxy_ajp_module (shared) ssl_module (shared) Here's an exert from the Apache error log: [Mon Mar 15 06:39:25 2010] [error] [client 213.246.222.74] client sent HTTP/1.1 request without hostname (see RFC2616 section 14.23): /w00tw00t.at.ISC.SANS.DFind:) [Mon Mar 15 07:41:31 2010] [error] [client 213.246.222.74] client sent HTTP/1.1 request without hostname (see RFC2616 section 14.23): /w00tw00t.at.ISC.SANS.DFind:) [Mon Mar 15 08:24:16 2010] [error] [client 67.19.250.146] client sent HTTP/1.1 request without hostname (see RFC2616 section 14.23): /w00tw00t.at.ISC.SANS.DFind:) [Mon Mar 15 08:43:46 2010] [error] [client 213.246.222.74] client sent HTTP/1.1 request without hostname (see RFC2616 section 14.23): /w00tw00t.at.ISC.SANS.DFind:) [Mon Mar 15 08:54:02 2010] [error] [client 74.208.123.71] client sent HTTP/1.1 request without hostname (see RFC2616 section 14.23): /w00tw00t.at.ISC.SANS.DFind:) [Mon Mar 15 09:09:51 2010] [notice] child pid 2138 exit signal Segmentation fault (11), possible coredump in /tmp [Mon Mar 15 09:45:27 2010] [error] [client 213.246.222.74] client sent HTTP/1.1 request without hostname (see RFC2616 section 14.23): /w00tw00t.at.ISC.SANS.DFind:) [Mon Mar 15 09:49:05 2010] [error] [client 190.12.113.196] File does not exist: /var/www/vhosts/default/htdocs/phpMyAdmin [Mon Mar 15 09:49:06 2010] [error] [client 190.12.113.196] File does not exist: /var/www/vhosts/default/htdocs/PMA And the Access log around the same time (09:09:51): 213.246.222.74 - - [15/Mar/2010:08:43:46 +0000] "GET /" 400 561 "-" "-" 208.80.193.28 - - [15/Mar/2010:08:52:20 +0000] "GET / HTTP/1.0" 301 313 "-" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; SU 2.009)" 74.208.123.71 - - [15/Mar/2010:08:54:02 +0000] "GET /w00tw00t.at.ISC.SANS.DFind:) HTTP/1.1" 400 298 "-" "-" 81.149.146.231 - - [15/Mar/2010:09:15:18 +0000] "GET /zabbix/ HTTP/1.1" 200 3565 "-" "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_2; en-us) AppleWebKit/531.21.8 (KHTML, like Gecko) Version/4.0.4 Safari/531.21.10" 81.158.71.196 - - [15/Mar/2010:09:16:06 +0000] "GET / HTTP/1.1" 301 313 "-" "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.4; en-US; rv:1.9.0.18) Gecko/2010020219 Firefox/3.0.18" 213.246.222.74 - - [15/Mar/2010:09:45:27 +0000] "GET /" 400 561 "-" "-" 213.246.222.74 - - [15/Mar/2010:09:45:27 +0000] "GET /w00tw00t.at.ISC.SANS.DFind:) HTTP/1.1" 400 298 "-" "-" 190.12.113.196 - - [15/Mar/2010:09:49:05 +0000] "GET /phpMyAdmin/main.php HTTP/1.0" 404 295 "-" "-" So As you can see, there's no access logged around the time of the fault!! How annoying :s I enabled core dumps and here is the backtrace: #0 0x00007f9c8c8a858b in memcpy () from /lib64/libc.so.6 No symbol table info available. #1 0x00007f9c8cfb066d in apr_pstrcat (a=<value optimized out>) at strings/apr_strings.c:165 cp = 0x1fa6b "\205¦H\211¦t`¦\003" argp = 0x7f9c9ad790e8 "Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Referer, Re"... res = 0x0 saved_lengths = {129643, 2, 43, 140310399395576, 0, 140310394592712} nargs = <value optimized out> len = <value optimized out> adummy = {{gp_offset = 16, fp_offset = 32668, overflow_arg_area = 0x7fff968a0ec0, reg_save_area = 0x7fff968a0de0}} #2 0x00007f9c8cfb1bf9 in apr_table_merge (t=0x7f9c8f83b148, key=0x7f9c85a465fe "Vary", val=0x7f9c9ad99070 "Referer, Referer, Referer, Referer, Referer") at tables/apr_tables.c:688 next_elt = (apr_table_entry_t *) 0x7f9c8f83b270 end_elt = (apr_table_entry_t *) 0x7f9c8f83b270 checksum = <value optimized out> hash = 22 #3 0x00007f9c85a42cfa in ?? () from /etc/httpd/modules/mod_rewrite.so No symbol table info available. #4 0x00007f9c85a44022 in ?? () from /etc/httpd/modules/mod_rewrite.so No symbol table info available. #5 0x00007f9c8e87bd1a in ap_run_fixups () from /usr/sbin/httpd No symbol table info available. #6 0x00007f9c8e88e8f8 in ap_process_request () from /usr/sbin/httpd No symbol table info available. #7 0x00007f9c8e88bb40 in ?? () from /usr/sbin/httpd No symbol table info available. #8 0x00007f9c8e887ca2 in ap_run_process_connection () from /usr/sbin/httpd No symbol table info available. #9 0x00007f9c8e892849 in ?? () from /usr/sbin/httpd No symbol table info available. #10 0x00007f9c8e892ada in ?? () from /usr/sbin/httpd No symbol table info available. #11 0x00007f9c8e892b90 in ?? () from /usr/sbin/httpd No symbol table info available. #12 0x00007f9c8e89387b in ap_mpm_run () from /usr/sbin/httpd No symbol table info available. #13 0x00007f9c8e86de48 in main () from /usr/sbin/httpd No symbol table info available. Can anyone shed any light on how to move forward with this? I can confirm that the server is operational and doesn't appear to be misbehaving - the failures are so infrequent that I haven't seen it do one while making a request myself. Really appreciate any help! Cheers!

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• UltiDev Cassini and <system.webServer> web.config settings

  - by Robert Koritnik

  MS Cassini Development Web Server is a nice product that executes web requests in a similar way that IIS7 does. Every request (event for static content) goes through the same .Net pipeline without exception. All custom HttpModule can handle any request. But sometimes you don't want these modules to execute for certain content (most often static content). In this regard, MS Cassini doesn't read/obey <system.webServer> web.config settings like IIS7 does. I'm particularly interested in these settings. <system.webServer> ... <handlers /> <modules /> </syste.webServer> Does UltiDev's Cassini (a separate payable product upgraded from MS Cassini) web server read these settings and execute as the web.config tells it to?

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• Including a pyd directly in a setup.py file

  - by Philippe Beaudoin

  I have a complex build process to generate a couple of python extension modules (.pyd). I want to include these in my setup.py for use with distutils. The distutils page talks in length about how to add extension modules from source, but I'd want to simply package these precompiled .pyd. What is the best practice to do this? Eventually, I'd also like to freeze everything in an executable with py2exe. Will I be able to do this if I directly specify the .pyd?

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• Module import error using IDLE

  - by Nimbuz

  I'm an absolute beginner using IDLE (Python 2.6.4) to learn the basics. I recently found a Python program that I want to run but it throws an error although the code looks fine (i.e all modules exist): from css.parse import parse data = """ em { padding: 2px; margin: 1em; border-width: medium; border-style: dashed; line-height: 2.4em; } p { color: red; font-size: 12pt } p:first-letter { color: green; font-size: 200% } p:first-line { color: blue }""" for rule in parse(data): print rule for decl in parse(data)[0]: print decl Error: ImportError: No module named parse How do I fix this? I'm using Snow Leopard. Edit: I guess its a PATH issue, where should I place the modules, which directory?

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• When using a package or framework is there a standard way to use version control?

  - by PurplePilot

  i.e. Do you put the whole package under VCS or just the components you are programming? Packages by there nature will get upgraded and that code will need to be added into the VCS, plus there is a lot of code that is static. Specifically I am going to be working on Joomla, adding and building modules, customising modules and the look and feel. Initially this will be just me but will expand to possibly two more developers as the project ramps up. My reaction would be just to VCS the lot, it means that i know it is all there and deployment via CI is easier(?). The alternative is to exclude the bulk of the code that is not being altered which could be error prone and laborious. As there is not a specific answer for this and i am looking for either experience or best practice advice i have marked it community wiki.

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• Why does a module compile by itself but fail when used from elsewhere?

  - by chrisribe

  I have a Perl module that appears to compile fine by itself, but is causing other programs to fail compilation when it is included: me@host:~/code $ perl -c -Imodules modules/Rebat/Store.pm modules/Rebat/Store.pm syntax OK me@host:~/code $ perl -c -Imodules bin/rebat-report-status Attempt to reload Rebat/Store.pm aborted Compilation failed in require at bin/rebat-report-status line 4. BEGIN failed--compilation aborted at bin/rebat-report-status line 4. The first few lines of rebat-report-status are ... 3 use Rebat; 4 use Rebat::Store; 5 use strict; ...

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• Compile rt73 driver (serialmonkey) on Ubuntu

  - by Curro

  Hello. I'm trying to compile some WiFi drivers I downloaded from SerialMonkey: http://rt2x00.serialmonkey.com/wiki/index.php/Downloads It's about a driver for a Ralink rt73 chipset. I already got the build-essentials and the kernel-headers on my computer. When I try to compile the driver using the "make" command I get this error: root@curro-ubuntu:/usr/src/rt73-cvs-2009041204/Module# sudo make make[1]: Entering directory `/usr/src/linux-headers-2.6.31-20-generic' Building modules, stage 2. MODPOST 0 modules make[1]: Leaving directory `/usr/src/linux-headers-2.6.31-20-generic' rt73.ko failed to build! make: *** [module] Error 1 I've looked over the Internet and haven't found anything yet, I don't know why am I getting this error. I have Ubuntu 9.10 installed on this computer. I've seen some other persons having the same issue Any help would be greatly appreciated. Thanks in advance

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• Common Pitfalls in Python

  - by Anurag Uniyal

  Today I was bitten again by "Mutable default arguments" after many years. I usually don't use mutable default arguments unless needed but I think with time I forgot about that, and today in the application I added tocElements=[] in a pdf generation function's argument list and now 'Table of Content' gets longer and longer after each invocation of "generate pdf" :) My question is what other things should I add to my list of things to MUST avoid? Mutable default arguments Import modules always same way e.g. from y import x and import x are different things, they are treated as different modules. Do not use range in place of lists because range() will become an iterator anyway, the following will fail: myIndexList = [0,1,3] isListSorted = myIndexList == range(3) # will fail in 3.0 isListSorted = myIndexList == list(range(3)) # will not same thing can be mistakenly done with xrange: `myIndexList == xrange(3)`. Catching multiple exceptions try: raise KeyError("hmm bug") except KeyError,TypeError: print TypeError It prints "hmm bug", though it is not a bug, it looks like we are catching exceptions of type KeyError,TypeError but instead we are catching KeyError only as variable TypeError, use this instead: try: raise KeyError("hmm bug") except (KeyError,TypeError): print TypeError

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• Why can you reference an imported module using the importing module in python

  - by noam

  I am trying to understand why any import can be referenced using the importing module, e.g #module master.py import slave and then >>>import master >>>print master.slave gives <module 'slave' from 'C:\Documents and Settings....'> What is the purpose of the feature? I can see how it can be helpful in a package's __init__.py file, but nothing else. Is it a side effect of the fact that every import is added to the module's namespace and that the module's namespace is visible from the outside? If so, why didn't they make an exception with data imported from other modules (e.g don't show it as part of the module's namespace for other modules)?

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• Which web application modular structure is better ?

  - by simple

  backend/ module1 module2 module3 frontend/ module1 module2 module3 or modules/ module1/ frontend backend module2/ frontend backend module3/ frontend backend

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• .Net Array or IList<T> from NumPy array in IronPython?

  - by Barry Wark

  Imagine I have a .Net application that supports user extensions in the form of Python modules by embedding IronPython. Using Ironclad, I can allow users to make use of the NumPy and SciPy packages from within their modules. How good is the interop provided by Ironclad? My question is: can I use a NumPy array of type T provided by the user's module in the rest of my app that requires an IList<T>? Edit To clarify, IronPython exposes any Python enumerable of objects of type T as an IEnumerable<T> or an IList<T>. I'm not sure if NumPy arrays fit in this category. I would rather not have to call .tolist() on the NumPy array as the arrays may be quite large.

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• Maven multi-module project with many reports: looking for an example

  - by hstoerr

  Is there an open source project that can serve as a good example on how to use the maven site plugin to generate reports? I would prefer it to consist of many modules, possibly hierarchically structured use as many plugins as possible (surefire, jxr, pmd, findbugs, javadoc, checkstyle, you name it) the reports should be aggregated: if some tests fail you want to have a single page that shows all modules with failing tests, not only a gazillion individual pages to check include enterprisey stuff (WAR, EAR etc), but this is not so important. The idea is to have something where you can gather ideas on how it is done and what is possible.

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• maven: multi-module project assembly into single jar

  - by Jeroen

  I have a multi-module project and want to create a single jar containing the classes of all my modules. Inside my parent POM, I declared the following plugin: <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-assembly-plugin</artifactId> <configuration> <descriptorRefs> <descriptorRef>bin</descriptorRef> </descriptorRefs> </configuration> </plugin> However, when running mvn assembly:assembly, only the source from the parent folder (empty) are included. How do I include the sources from my modules into the archive?

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• Having trouble getting MEF imports to be resolved

  - by Dave

  This is sort of a continuation of one of my earlier posts, which involves the resolving of modules in my WPF application. This question is specifically related to the effect of interdependencies of modules and the method of constructing those modules (i.e. via MEF or through new) on MEF's ability to resolve relationships. First of all, here is a simple UML diagram of my test application: I have tried two approaches: left approach: the App implements IError right approach: the App has a member that implements IError Left approach My code behind looked like this (just the MEF-related stuff): // app.cs [Export(typeof(IError))] public partial class Window1 : Window, IError { [Import] public CandyCo.Shared.LibraryInterfaces.IPlugin Plugin { get; set; } [Export] public CandyCo.Shared.LibraryInterfaces.ICandySettings Settings { get; set; } private ICandySettings Settings; public Window1() { // I create the preferences here with new, instead of using MEF. I wonder // if that's my whole problem? If I use MEF, and want to have parameters // going to the constructor, then do I have to [Export] a POCO (i.e. string)? Settings = new CandySettings( "Settings", @"c:\settings.xml"); var catalog = new DirectoryCatalog( "."); var container = new CompositionContainer( catalog); try { container.ComposeParts( this); } catch( CompositionException ex) { foreach( CompositionError e in ex.Errors) { string description = e.Description; string details = e.Exception.Message; } throw; } } } // plugin.cs [Export(typeof(IPlugin))] public class Plugin : IPlugin { [Import] public CandyCo.Shared.LibraryInterfaces.ICandySettings CandySettings { get; set; } [Import] public CandyCo.Shared.LibraryInterfaces.IError ErrorInterface { get; set; } [ImportingConstructor] public Plugin( ICandySettings candy_settings, IError error_interface) { CandySettings = candy_settings; ErrorInterface = error_interface; } } // candysettings.cs [Export(typeof(ICandySettings))] public class CandySettings : ICandySettings { ... } Right-side approach Basically the same as the left-side approach, except that I created a class that inherits from IError in the same assembly as Window1. I then used an [Import] to try to get MEF to resolve that for me. Can anyone explain how the two ways I have approached MEF here are flawed? I have been in the dark for so long that instead of reading about MEF and trying different suggestions, I've added MEF to my solution and am stepping into the code. The part where it looks like it fails is when it calls partManager.GetSavedImport(). For some reason, the importCache is null, which I don't understand. All the way up to this point, it's been looking at the part (Window1) and trying to resolve two imported interfaces -- IError and IPlugin. I would have expected it to enter code that looks at other assemblies in the same executable folder, and then check it for exports so that it knows how to resolve the imports...

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• Basics for implementing SSL on PHP Website

  - by KoolKabin

  Hi guys, I am here as a developer of a website. My website got different modules among which one function is to process credit card. In order to process credit card I need to implement SSL layer and process the pages. For rest of modules the SSL is optional. Now my points are: 1.) Is the location of file for http and https same? 2.) Can the session of http and https be shared? this is required as i need user login information and cart item information.

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• Best way to deal with session handling in Zend Framework

  - by JACK IN THE CRACK

  So I'm starting up in Zend framework and looking to implement a site-wide "User" session.... something I can easily access from ALL modules/controllers in the application. I'm like, should I make a new namespace in the library and extend the controller, like: MyLib_Controller_Action extends Zend_Controller_Action { protected $_userSession; function preDispatch(Zend_Controller_Request_Abstract $req) { $this->_userSession = new Zend_Session_Namespace('user'); } } ANd then have all my controllers/modules/etc extend from that? Or should I create a Plugin or what? How would you go about making this plugin to pass the user session to the controller? Or do I do it in the bootstrap?? Again how to pass to controller? Also should I use Zend_Session_Namespace or Zend_Http_Cookie and also how do I encrypt and xss clean the cookie or is that did automagically?

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