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  • Ruby on Rails redirect_to not functioning in IF statement?

    - by Hard-Boiled Wonderland
    Hi, I am redirecting a POST request to ensure the URL is correct along with other things. The redirect worked fine before I added in the if statements for town below: if !params[:address].blank? town = Town.find(:all, :conditions => ["name = ?", params[:address]]) @towns = town if !town.blank? redirect_to '/town/' + params[:address] else @town_invalid = 'test' end end end I am sure it is something simple and that I simply cannot see it. Also if you see any glaring errors or code mishaps let me know as I am just starting out. EDIT: I should mention this is what I get back from Safari when a real town is entered: Safari can’t open the page.Safari can’t open the page “http://localhost:3000/” because the server unexpectedly dropped the connection. This sometimes occurs when the server is busy. Wait for a few minutes, and then try again. Thanks!

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  • Life Cycle Tools Suite

    - by pearcewg
    I am looking to replace the life cycle tools currently used by my development teams. Tools that I'm looking for: Version Control Defect/Issue Tracking Requirements Tracking Test Case Management (potentially) Project Management: Project Status, hours entry I have a new beefy server (Windows 2008 Server) to run all tools on. I'm looking at COTS and Open Source options, but haven't decided so far. Other factors: Distributed team (different physical sites) Some Windows Development, some Linux Development Software, Firmware, Technical Writing need to be able to use it Recommendations on a good suite that will work together? If Open Source, best approach to run on the Windows 2008 Server?

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  • Create PDF in memory instead of physical file using C#

    - by acadia
    Hello, How do one create PDF in memorystream instead of physical file using itextsharp. The code below is creating actual pdf file. Instead how can I create a byte[] and store it in the byte[] so that I can return it through a function using iTextSharp.text; using iTextSharp.text.pdf; Document doc = new Document(iTextSharp.text.PageSize.LETTER, 10, 10, 42, 35); PdfWriter wri = PdfWriter.GetInstance(doc, new FileStream("c:\\Test11.pdf", FileMode.Create)); doc.Open();//Open Document to write Paragraph paragraph = new Paragraph("This is my first line using Paragraph."); Phrase pharse = new Phrase("This is my second line using Pharse."); Chunk chunk = new Chunk(" This is my third line using Chunk."); doc.Add(paragraph); doc.Add(pharse); doc.Add(chunk); doc.Close(); //Close document

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  • CLI way of uninstalling a Windows update?

    - by radioact1ve
    Basically, what can be achieved by going to Control Panel Uninstall a Program View Installed Updates Right Click Uninstall, but through the command line? Looking for a way that works across the Windows platform but if (and according to my reading, most likely) it's version dependent so be it. Maybe something like: C:\command /uninstall "Security Update for Windows 7 for x64-based Systems (KB2705219)" Looks like using the KB would be great but wusa.exe works for the above example update but not for say "Security Update for Silverlight (KBXXXXXXXX)". Not much consistency. I'm really surprised there isn't much documentation on this. How does an app like WUInstall do it? Follow up question is how is that list of "View Installed Updates" populated? I've searched the registry like crazy hoping for an "UninstallString" or equivalent but only found references to the regular Add/Remove Programs list. Thought I would reference a StackOverflow question for another perspective.

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  • Better filesystem for ZODB and Plone.app.blob

    - by h2o
    I am interested to know which Linux file system is best for hosting Zope's Object Database (Data.fs) and Plone.app.blob (blobstorage). Various reviews from the Internet suggests that XFS is good for hosting both. XFS is fast and works well with large files. Anyone using XFS for Zope or Plone? What optimization flags, if any, do you use for XFS? Note that this is a repost. I originally asked this on StackOverflow and was given a suggestion to post on Severfault instead.

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  • How to check if a generic type definition inherits from another generic type definition

    - by Anne
    I'm trying to check whether an open generic type definition implements some open generic interface. Look at the sample below: public interface IService<T> { } public class ServiceImpl<T> : IService<T> { } private static bool OpenGenericTypeImplementsOpenGenericInterface( Type derivedType, Type interfaceType) { return derivedType.GetInterfaces().Contains(interfaceType); } [TestMethod] public void Verify() { Type openGenericImplementation = typeof(ServiceImpl<>); Type expectedInterfaceType = typeof(IService<>); bool implDoesImplementInterface = OpenGenericTypeImplementsOpenGenericInterface( openGenericImplementation, expectedInterfaceType); // This assert fails. Why? Assert.IsTrue(implDoesImplementInterface); } I found out that the returned type from the Type.GetInterfaces() method does not match the type returned from typeof(IService<>). I can't figure out why that is and how to correctly validate whether some generic type definition inherits or implements some other generic type definition. What's going on here and how do I solve fix this problem?

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  • Loading a image and copying the metadata of a jpeg image.

    - by Ravi shankar
    I am trying to load a jpeg image and trying to copy metadata to new image, but the new image is created with out any metadata. Can some one help me out in solving above problem. I am using C++ CLI 3.5. if (System::IO::Stream ^jpegStreamIn = File::Open(FileMyPictures, FileMode::Open, FileAccess::ReadWrite, FileShare::None)) { decoder = gcnew System::Windows::Media::Imaging::JpegBitmapDecoder(jpegStreamIn, System::Windows::Media::Imaging::BitmapCreateOptions::PreservePixelFormat, System::Windows::Media::Imaging::BitmapCacheOption::OnLoad); jpegStreamIn->Close(); } bitmapFrame = decoder->Frames[0]; metadata = (System::Windows::Media::Imaging::BitmapMetadata^)bitmapFrame->Metadata;

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  • Apache + mod_php Ignores SUID?

    - by profitphp
    Does apache or mod_php cause a SUID flag to be ignored when using the shell_exec command from a web accessed PHP script? I'm trying to allow a web accessible PHP script to rename some files which the apache user does not have write access to. I don't want to give it access to write these, as I only want one controlled script to be able to do this. I'm trying to avoid SUDO and the config needed or the headache/insecurity of using a que called from a privileged users cron, and it seemed like I should be able to use SUID to accomplish this. If you need more info, I've got a similar question open over here, but I think its too detailed and people are not seeing what I'm asking. http://stackoverflow.com/questions/6432931/suid-issues-with-php-apache

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  • Detect and record a sound with python

    - by Jean-Pierre
    I'm using this program to record a sound in python: import pyaudio import wave import sys chunk = 1024 FORMAT = pyaudio.paInt16 CHANNELS = 1 RATE = 44100 RECORD_SECONDS = 5 WAVE_OUTPUT_FILENAME = "output.wav" p = pyaudio.PyAudio() stream = p.open(format = FORMAT, channels = CHANNELS, rate = RATE, input = True, frames_per_buffer = chunk) print "* recording" all = [] for i in range(0, RATE / chunk * RECORD_SECONDS): data = stream.read(chunk) all.append(data) print "* done recording" stream.close() p.terminate() write data to WAVE file data = ''.join(all) wf = wave.open(WAVE_OUTPUT_FILENAME, 'wb') wf.setnchannels(CHANNELS) wf.setsampwidth(p.get_sample_size(FORMAT)) wf.setframerate(RATE) wf.writeframes(data) wf.close() I want to change the program to start recording when sound is detected by the sound card input. Probably should compare the input sound level in Chunk, but how do this?

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  • Getting "Object is read only" error when setting ClientCredentials in WCF

    - by Paul Mrozowski
    I have a proxy object generated by Visual Studio (client side) named ServerClient. I am attempting to set ClientCredentials.UserName.UserName/Password before opening up a new connection using this code: InstanceContext context = new InstanceContext(this); m_client = new ServerClient(context); m_client.ClientCredentials.UserName.UserName = "Sample"; As soon as the code hits the UserName line it fails with an "Object is read-only" error. I know this can happen if the connection is already open or faulted, but at this point I haven't called context.Open() yet. I have configured the Bindings (which uses netTcpBinding) to use Message as it's security mode, and MessageClientCredentialType is set to UserName. Any ideas?

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  • Skia Decoder fails to decode remote Stream

    - by Samuh
    I am trying to open a remote Stream of a JPEG image and convert it into a Bitmap object: BitmapFactory.decodeStream( new URL("http://some.url.to/source/image.jpg") .openStream()); The decoder returns null and in the logs I get the following message: DEBUG/skia(xxxx): --- decoder->decode returned false Note: 1. the content length is non-zero and content type is image/jpeg 2. When I open the URL in browser I can see the image. What is that I am missing here? Please help. Thanks.

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  • Log centralization, display, transport and aggregation at scale v2

    - by Eric DANNIELOU
    This is a duplicate question of Log transport and aggregation at scale and http://stackoverflow.com/questions/1737693/whats-the-best-practice-for-centralised-logging, but the answers might differ now : The softwares described in 2009 may have changed since (for example Octopussy evolved from version 0.9 to 1.0.5). Rsyslog has become the default on most linux distro. Requirements have changed (security, software configuration management, ...). I'd like to ask the following questions : How do you centralize, display and archive system logs? How would you like to do it now if you had to? Most linux distro use rsyslog nowadays, which can provide reliable log transport. But some older unices, network devices and maybe windows box still use old udp rfc-style transport. How did you manage to get reliable transport? Storing logs for a few months can represent a huge amount of disk space. How do you store them? rdbms? Compressed and encrypted text files?

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  • pasenger does not start puppet master under nginx

    - by Anadi Misra
    On the server [root@bangvmpllDA02 logs]# ruby -v ruby 1.8.7 (2011-06-30 patchlevel 352) [x86_64-linux] [root@bangvmpllDA02 logs]# puppet --version 3.0.1 and [root@bangvmpllDA02 logs]# service nginx configtest nginx: the configuration file /apps/nginx/nginx.conf syntax is ok nginx: configuration file /apps/nginx/nginx.conf test is successful [root@bangvmpllDA02 logs]# service nginx status nginx (pid 25923 25921 25920 25917 25908) is running... [root@bangvmpllDA02 logs]# however none of my agents are able to connect to the master, they all fail with errors like so [amisr1@blramisr195602 ~]$ puppet agent --test --verbose --server bangvmpllda02.XXX.com Info: Creating a new SSL certificate request for blramisr195602.XXX.com Info: Certificate Request fingerprint (SHA256): 26:EB:08:1F:82:32:E4:03:7A:64:8E:30:A3:99:93:26:E6:66:B9:B0:49:B6:08:F9:67:CA:1B:0C:00:B9:1D:41 Error: Could not request certificate: Error 405 on SERVER: <html> <head><title>405 Not Allowed</title></head> <body bgcolor="white"> <center><h1>405 Not Allowed</h1></center> <hr><center>nginx</center> </body> </html> Exiting; failed to retrieve certificate and waitforcert is disabled when I check logs on puppet master [root@bangvmpllDA02 logs]# tail puppet_access.log [05/Dec/2012:17:45:18 +0530] "GET /production/certificate/ca? HTTP/1.1" 404 162 "-" "Ruby" [05/Dec/2012:18:32:23 +0530] "PUT /production/certificate_request/sl63anadi.XXX.com HTTP/1.1" 405 166 "-" "-" [05/Dec/2012:18:33:33 +0530] "GET /production/certificate/sl63anadi.XXX.com? HTTP/1.1" 404 162 "-" "-" [05/Dec/2012:18:33:33 +0530] "GET /production/certificate_request/sl63anadi.XXX.com? HTTP/1.1" 404 162 "-" "-" [05/Dec/2012:18:33:33 +0530] "PUT /production/certificate_request/sl63anadi.XXX.com HTTP/1.1" 405 166 "-" "-" and the error logs show that nginx is not really able to process the request well 2012/12/05 18:33:33 [error] 25920#0: *23 open() "/etc/puppet/rack/public/production/certificate/sl63anadi.XXX.com" failed (2: No such file or directory), client: 10.209.47.26, server: , request: "GET /production/certificate/sl63anadi.XXX.com? HTTP/1.1", host: "bangvmpllda02.XXX.com:8140" 2012/12/05 18:33:33 [error] 25920#0: *24 open() "/etc/puppet/rack/public/production/certificate_request/sl63anadi.XXX.com" failed (2: No such file or directory), client: 10.209.47.26, server: , request: "GET /production/certificate_request/sl63anadi.XXX.com? HTTP/1.1", host: "bangvmpllda02.XXX.com:8140" 2012/12/05 18:47:56 [error] 25923#0: *27 open() "/etc/puppet/rack/public/production/certificate/ca" failed (2: No such file or directory), client: 10.209.47.31, server: , request: "GET /production/certificate/ca? HTTP/1.1", host: "bangvmpllda02.XXX.com:8140" 2012/12/05 18:47:56 [error] 25923#0: *28 open() "/etc/puppet/rack/public/production/certificate_request/blramisr195602.XXX.com" failed (2: No such file or directory), client: 10.209.47.31, server: , request: "GET /production/certificate_request/blramisr195602.XXX.com? HTTP/1.1", host: "bangvmpllda02.XXX.com:8140" Passenger does not show any application groups either [root@bangvmpllDA02 nginx]# passenger-status ----------- General information ----------- max = 15 count = 0 active = 0 inactive = 0 Waiting on global queue: 0 ----------- Application groups ----------- [root@bangvmpllDA02 nginx]# here's my nginx configuration [root@bangvmpllDA02 logs]# cat ../nginx.conf user puppet; worker_processes 4; #error_log logs/error.log; #error_log logs/error.log notice; error_log logs/error.log info; #pid logs/nginx.pid; events { use epoll; worker_connections 1024; } http { include mime.types; default_type application/octet-stream; log_format main '$remote_addr - $remote_user [$time_local] "$request" ' '$status $body_bytes_sent "$http_referer" ' '"$http_user_agent" "$http_x_forwarded_for"'; access_log logs/access.log main; sendfile on; #tcp_nopush on; server_tokens off; #keepalive_timeout 0; keepalive_timeout 120; gzip on; gzip_http_version 1.1; gzip_disable "msie6"; gzip_vary on; gzip_min_length 1100; gzip_buffers 64 8k; gzip_comp_level 3; gzip_proxied any; gzip_types text/plain text/css application/x-javascript text/xml application/xml; server { listen 80; server_name bangvmpllda02.XXXX.com; charset utf-8; #access_log logs/http.access.log main; location / { root html; index index.html index.htm index.php; } #error_page 404 /404.html; # redirect server error pages to the static page /50x.html # error_page 500 502 503 504 /50x.html; location = /50x.html { root html; } # proxy the PHP scripts to Apache listening on 127.0.0.1:80 # #location ~ \.php$ { # proxy_pass http://127.0.0.1; #} # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000 # location ~ \.php$ { root html; fastcgi_pass unix:/var/run/php-fpm/php-fpm.sock; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; fastcgi_param SCRIPT_NAME $fastcgi_script_name; include fastcgi_params; } # deny access to .htaccess files, if Apache's document root # concurs with nginx's one # location ~ /\.ht { access_log off; log_not_found off; deny all; } location ~* \.(jpg|jpeg|gif|png|css|js|ico|xml)$ { access_log off; log_not_found off; expires 2d; } } # Passenger needed for puppet passenger_root /usr/lib/ruby/gems/1.8/gems/passenger-3.0.18; passenger_ruby /usr/bin/ruby; passenger_max_pool_size 15; server { ssl on; listen 8140 default ssl; server_name bangvmpllda02.XXXX.com; passenger_enabled on; passenger_set_cgi_param HTTP_X_CLIENT_DN $ssl_client_s_dn; passenger_set_cgi_param HTTP_X_CLIENT_VERIFY $ssl_client_verify; passenger_min_instances 5; access_log logs/puppet_access.log; error_log logs/puppet_error.log; root /etc/puppet/rack/public; ssl_certificate /var/lib/puppet/ssl/certs/bangvmpllda02.XXX.com.pem; ssl_certificate_key /var/lib/puppet/ssl/private_keys/bangvmpllda02.XXX.com.pem; ssl_crl /var/lib/puppet/ssl/ca/ca_crl.pem; ssl_client_certificate /var/lib/puppet/ssl/certs/ca.pem; ssl_ciphers SSLv2:-LOW:-EXPORT:RC4+RSA; ssl_prefer_server_ciphers on; ssl_verify_client optional; ssl_verify_depth 1; ssl_session_cache shared:SSL:128m; ssl_session_timeout 5m; } } and the puppet.conf [main] # The Puppet log directory. # The default value is '$vardir/log'. logdir = /var/log/puppet # Where Puppet PID files are kept. # The default value is '$vardir/run'. rundir = /var/run/puppet dns_alt_names = devops.XXXX.com,devops confdir = /etc/puppet vardir = /var/lib/puppet storeconfigs = true storeconfigs_backend = puppetdb thin_storeconfigs = false async_storeconfigs = false ssl_client_header = SSL_CLIENT_S_D ssl_client_verify_header = SSL_CLIENT_VERIFY # Where SSL certificates are kept. # The default value is '$confdir/ssl'. ssldir = $vardir/ssl any ideas where am I going wrong? I checkthe directory permissions; /usr/share/puppet, /etc/puppet and /var/lib/puppet (and files inside them) are owned by puppet user.

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  • jump to page of a pdf in google docs / drive / apps

    - by Aaron - Solution Evangelist
    i want to jump to a specific page of a pdf file via the google docs via the editor url https://docs.google.com/file/d/xxx/edit or the embed url https://docs.google.com/file/d/xxx/preview i am not looking to use the http://docs.google.com/gview?url= referenced in the stackoverflow question how to open specific page on Google's docs viewer as i want to do this for documents where authentication is required the the document is not available via public url. is there some way of appending an anchor (i would have expected it to be https://docs.google.com/file/d/xxx/preview#10) or a query (e.g. https://docs.google.com/file/d/xxx/preview?page=10) to the google docs / drive / apps viewer?

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  • GRUB Problem or Hardware Problem?

    - by Nikit Batale
    I have Windows XP Professional and Ubuntu Karmic Koala 9.10 on dual boot. I often get a GRUB loading failed error during boot-up. Or sometimes, when I try to boot into either Ubuntu or XP, I get a Could not read from source error. Now this is funny. After getting one of the above errors, if I simply unplug the SATA cable from Hard Drive end and plug it again, the problem gets solved. So what and whose problem is it? GRUB or My Hardware ? P.S.: I was suggested on StackOverflow that ServerFault is the right place for this question.

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  • How to Practice Unix Programming in C?

    - by danben
    After five years of professional Java (and to a lesser extent, Python) programming and slowly feeling my CS education slip away, I decided I wanted to broaden my horizons / general usefulness to the world and do something that feels more (to me) like I really have an influence over the machine. I chose to learn C and Unix programming since I feel like that is where many of the most interesting problems are. My end goal is to be able to do this professionally, if for no other reason than the fact that I have to spend 40-50 hours per week on work that pays the bills, so it may as well also be the type of coding I want to get better at. Of course, you don't get hired to do things you haven't dont before, so for now I am ramping up on my own. To this end, I started with K&R, which was a great resource in part due to the exercises spread throughout each chapter. After that I moved on to Computer Systems: A Programmer's Perspective, followed by ten chapters of Advanced Programming in the Unix Environment. When I am done with this book, I will read Unix Network Programming. What I'm missing in the Stevens books is the lack of programming problems; they mainly document functionality and provide examples, with a few end-of-chapter questions following. I feel that I would benefit much more from being challenged to use the knowledge in each chapter ala K&R. I could write some test program for each function, but this is a less desirable method as (1) I would probably be less motivated than if I were rising to some external challenge, and (2) I will naturally only think to use the function in the ways that have already occurred to me. So, I'd like to get some recommendations on how to practice. Obviously, my first choice would be to find some resource that has Unix programming challenges. I have also considered finding and attempting to contribute to some open source C project, but this is a bit daunting as there would be some overhead in learning to use the software, then learning the codebase. The only open-source C project I can think of that I use regularly is Python, and I'm not sure how easy that would be to get started on. That said, I'm open to all kinds of suggestions as there are likely things I haven't even thought of.

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  • How can I exceed the 60% Memory Limit of IIS7

    - by evilknot
    Pardon if this is more stackoverflow vs. serverfault. It seems to be on the border. We have an application that caches a large amount of product data for an e-commerce application using ASP.NET caching. This is a dictionary object with 65K elements, and our calculations put the object's size at ~10GB. Problem: The amount of memory the object consumes seems to be far in excess of our 10GB calculation. BIGGEST CONCERN: We can't seem to use over 60% of the 32GB in the server. What we've tried so far: In machine.config/system.web (sf doesn't allow the tags, pardon the formatting): processModel autoConfig="true" memoryLimit="80" In web.config/system.web/caching/cache (sf doesn't allow the tags, pardon the formatting): privateBytesLimit = "20000000000" (and 0, the default of course) percentagePhysicalMemoryUsedLimit = "90" Environment: Windows 2008R2 x64 32GB RAM IIS7 Nothing seems to allow us to exceed the 60% value. See attached screenshot of taskman.

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  • Google Chrome - Disable Location auto-detection also for google sites

    - by Michael
    I have read how to disable the location auto-detection here and also in Stackoverflow questions asked before: Google Chrome - Auto Detect Location and more... But it seems that it has no influence on the Google relates sites, e.g. Google translate, Google analytic, and even Google it self as a search engine. I have updated Google chrome to 21.0.1180.89 and then all my problems started, i am breaking my hand since i need to translate every word Google presents in their webpages of their products (or simply use their automatic translator). So i started to use Firefox again, but i really want to return back to Google, what can I do?

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  • C# How to set source path of image within html pages to show in webbrowser control

    - by Royson
    Hi in my application there is web browser control to show some static html pages. The pages are displayed properly. but images are not displayed.. I tried with changing src-path but no success. my htmlpages folder is located at bin folder. And i am assigning it as. FileStream source = new FileStream(@"..\HtmlPages\supportHtml.html", FileMode.Open, FileAccess.Read); if i open html files in browser, the images are displayed properly.. So, What is the correct path for images..?? If i set full path to src attribute of <img> tag..it works. but i think its not a proper way. :(

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  • C# How to set source path of image within html pages to show in webbrowser control

    - by Royson
    Hi in my application there is web browser control to show some static html pages. The pages are displayed properly. but images are not displayed.. I tried with changing src-path but no success. my html file is located at bin folder. And i am assigning it as. FileStream source = new FileStream(@"..\HtmlPages\supportHtml.html", FileMode.Open, FileAccess.Read); if i open html files in browser, the images are displayed properly.. So, What is the correct path for images..?? If i set full path to src attribute of <img> tag..it works. but i think its not a proper way. :(

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  • Creating cookieless application on development machine with asp.net

    - by zaladane
    I am thinking about setting up a new domain to host static content on my website and have it cookieless just like Stackoverflow with their static domain. So before going ahead and buying the domain and setting it up I wanted to test it on my developement machine first under localhost (I have to mention that i am planning on having IIS running on my new domain for the static files). I therefore created a new application under IIS and disabled session state and forms authentication. When my main application needs resources like css, images and js , I use the path to the "static" application where they are hosted. The problem is that when I look at the request and the response for the requested files, they still have the session_id cookie defined as well as the asp.net authentication cookie. Is it at all possible to accomplish what i am trying to do on a development machine or do i have to just go ahead and purchase the new domain which hopefully with make things right? I tried to read about cookieless domain but can't figure out what i might be missing.

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  • What does the C compiler error "looks like a function definition, but there is no parameter list;" m

    - by user312309
    #include <iostream> #include <fstream> using namespace std; int main { int num1, num2; ifstream infile; ostream outfile; infile.open("input.dat"); outfile.open("output.dat"); infile >> num 1 >> num 2; outfile << "Sum = " << num1 + num2 << endl; infile.close() outfile.close() return 0; } this is what i did and when i compile it, i got this error that said error C2470: 'main' : looks like a function definition, but there is no parameter list; skipping apperent body please dont hate me :( i am new at this computer science....

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