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  • removing duplicate strings from a massive array in java efficiently?

    - by Preator Darmatheon
    I'm considering the best possible way to remove duplicates from an (Unsorted) array of strings - the array contains millions or tens of millions of stringz..The array is already prepopulated so the optimization goal is only on removing dups and not preventing dups from initially populating!! I was thinking along the lines of doing a sort and then binary search to get a log(n) search instead of n (linear) search. This would give me nlogn + n searches which althout is better than an unsorted (n^2) search = but this still seems slow. (Was also considering along the lines of hashing but not sure about the throughput) Please help! Looking for an efficient solution that addresses both speed and memory since there are millions of strings involved without using Collections API!

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  • CodeIgniter's XSS Protection is removing <script> tags from user inputs... but I don't want it to!

    - by Jack W-H
    Hey folks, CodeIgniter is brilliant but I'm using it to develop a site where users need to be able to share their code for websites. Unfortunately, CodeIgniter has been doing the "right" thing by removing <script> tags from my user's inputs into the database, so when it's returned data looks like this: [removed] User's data [removed] However, I need my site to DISPLAY script tags but obviously not PARSE them. How can I get CodeIgniter or PHP to return <script> tags, but still sanitise them for the database and return them without them executing? Thanks! Jack EDIT: By the way, it's not an option to use stuff like Markdown, everything has to output to copy-pastable code that could work with no modification somewhere else

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  • Google Maps 3.0 - Sometimes after removing markers, they stay around...

    - by ewindsor
    Sometimes when I remove markers they stay around in a "ghost" fashion -- they are clickable but there's no more icon. This is not every time and usually only happens when I remove more than one at a time. Here's my code for removing markers: for(var i in markers) { google.maps.event.clearListeners(markers[i], "click"); markers[i].setMap(null); markers[i] = null; delete markers[i]; } The only way to guarantee that they get removed 100% of the time is to move the map to another position. Then when I move it back they are gone 100% of the time. Thanks for your help.

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  • How to raise an error, if the parsed number of a C++ stdlib stream is immediatly followed by a non whitespace character?

    - by Micha Wiedenmann
    In the following example, I didn't expect, that 1.2345foo would be parsed. Since I am reading data files, it is probably better to raise an error and notify the user. Is peek() the correct thing to do here? #include <iostream> #include <sstream> int main() { std::stringstream in("1.2345foo"); double x; in >> x; if (in) { std::cout << "good\n"; } else { std::cout << "bad\n"; } } Output good

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  • Algorithm: Removing as few elements as possible from a set in order to enforce no subsets.

    - by phimuemue
    Hello, I got a problem which I do not know how to solve: I have a set of sets A = {A_1, A_2, ..., A_n} and I have a set B. The target now is to remove as few elements as possible from B (creating B'), such that, after removing the elements for all 1 <= i <= n, A_i is not a subset of B'. For example, if we have A_1 = {1,2}, A_2 = {1,3,4}, A_3={2,5}, and B={1,2,3,4,5}, we could e.g. remove 1 and 2 from B (that would yield B'={3,4,5}, which is not a superset of one of the A_i). Does anybody know an algorithm for determining the (minimal number of) elements to be removed?

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  • Why is ColdFusion adding whitespace when I call a function in cfoutput?

    - by Kip
    If I do something like this in ColdFusion: <cfoutput>foo="#foo()#"</cfoutput> The resulting HTML has a space in front of it: foo=" BAR" However, if it is not a function call it works fine, i.e.: <cfset fooOut=foo() /> <cfoutput>foo="#fooOut#"</cfoutput> Gives this output: foo="BAR" Where is this extra space coming from and is there anything I can do about it?

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  • How do I browse a Websphere MQ message without removing it?

    - by jmgant
    I'm writing a .NET Windows Forms application that will post a message to a Websphere MQ queue and then poll a different queue for a response. If a response is returned, the application will partially process the response in real time. But the response needs to stay in the queue so that a daily batch job, which also reads from the response queue, can do the rest of the processing. I've gotten as far as reading the message. What I haven't been able to figure out is how to read it without removing it. Here's what I've got so far. I'm an MQ newbie, so any suggestions will be appreciated. And feel free to respond in C#. Public Function GetMessage(ByVal msgID As String) As MQMessage Dim q = ConnectToResponseQueue() Dim msg As New MQMessage() Dim getOpts As New MQGetMessageOptions() Dim runThru = Now.AddMilliseconds(CInt(ConfigurationManager.AppSettings("responseTimeoutMS"))) System.Threading.Thread.Sleep(1000) 'Wait for one second before checking for the first response' While True Try q.Get(msg, getOpts) Return msg Catch ex As MQException When ex.Reason = MQC.MQRC_NO_MSG_AVAILABLE If Now > runThru Then Throw ex System.Threading.Thread.Sleep(3000) Finally q.Close() End Try End While Return Nothing 'Should never reach here' End Function NOTE: I haven't verified that my code actually removes the message. But that's how I understand MQ to work, and that appears to be what's happening. Please correct me if that's not the default behavior.

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  • Removing HttpModule for specific path in ASP.NET / IIS 7 application?

    - by soccerdad
    Most succinctly, my question is whether an ASP.NET 4.0 app running under IIS 7 integrated mode should be able to honor this portion of my Web.config file: <location path="auth/windows"> <system.webServer> <modules> <remove name="FormsAuthentication"/> </modules> </system.webServer> </location> I'm experimenting with mixed mode authentication (Windows and Forms - I know there are other questions on S.O. about the topic). Using IIS Manager, I've disabled Anonymous authentication to auth/windows/winauth.aspx, which is within the location path above. I have Failed Request Tracing set up to trace various HTTP status codes, including 302s. When I request the winauth.aspx page, a 302 HTTP status code is returned. If I look at the request trace, I can see that a 401 (unauthorized) was originally generated by the AnonymousAuthenticationModule. However, the FormsAuthenticationModule converts that to a 302, which is what the browser sees. So it seems as though my attempt to remove that module from the pipeline for pages in that path isn't working. But I'm not seeing any complaints anywhere (event viewer, yellow pages of death, etc.) that would indicate it's an invalid configuration. I want the 401 returned to the browser, which presumably would include an appropriate WWW-Authenticate header. A couple of other points: a) I do have <authentication mode="Forms"> in my Web.config, and that is what the 302 redirects to; b) I got the "name" of the module I'm trying to remove from the inetserv\config\applicationHost.config file. Anyone had any luck removing modules in this fashion? Thanks much, Donnie

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  • Weird CSS behavior... removing a 1px border makes <DIV> move about 20px

    - by John
    I have the following: CSS #pageBody { height: 500px; padding:0; margin:0; /*border: 1px solid #00ff00;*/ } #pageContent { height:460px; margin-left:35px; margin-right:35px; margin-top:30px; margin-bottom:30px; padding:0px 0 0 0; } HTML <div id="pageBody"> <div id="pageContent"> <p> blah blah blah </p> </div> </div> </div> If I uncomment the border line in pageBody, everything fits sweetly... I had the border on to verify things were as expected. But removing the border, pageBody drops down the page about 20px, while pageContent does not appear to move at all. Now this is not the real page, but a subset. If nothing's obvious I can attempt to generate a working minimal sample, but I thought there might be an easy quick answer first. I see the same exact problem in Chrome and IE8, suggesting it's me not the browser. Any tips where to look? I wondered maybe the 1px border was some tipping point making the contents of a div just too big, but changing #pageContent height to e.g 400 makes no difference, other than clipping the bottom off that div.

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  • Why is this removing all elements from my LinkedList?

    - by Brian
    Why is my remove method removing every element from my Doubly Linked List? If I take out that if/else statements then I can successfully remove middle elements, but elements at the head or tail of the list still remain. However, I added the if/else statements to take care of elements at the head and tail, unfortunately this method now removes every element in my list. What am I do wrong? public void remove(int n) { LinkEntry<E> remove_this = new LinkEntry<E>(); //if nothing comes before remove_this, set the head to equal the element after remove_this if (remove_this.previous == null) head = remove_this.next; //otherwise set the element before remove_this equal to the element after remove_this else remove_this.previous.next = remove_this.next; //if nothing comes after remove_this, set the tail equal to the element before remove_this if (remove_this.next == null) tail = remove_this.previous; //otherwise set the next element's previous pointer to the element before remove_this else remove_this.next.previous = remove_this.previous; //if remove_this is located in the middle of the list, enter this loop until it is //found, then remove it, closing the gap afterwards. int i = 0; for (remove_this = head; remove_this != null; remove_this = remove_this.next) { //if i == n, stop and delete 'remove_this' from the list if (i == n) { //set the previous element's next to the element that comes after remove_this remove_this.previous.next = remove_this.next; //set the element after remove_this' previous pointer to the element before remove_this remove_this.next.previous = remove_this.previous; break; } //if i != n, keep iterating through the list i++; } }

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  • Unable to use "Manage Content and Structure" after removing Project server form the SharePoint farm.

    - by Brian
    We're no longer using Office Project Server, and I've removed it from the farm in which it was installed. However, now that it's been removed, I am unable to access the "Manage Content and Structure" link on some of our SharePoint sites. I get an error indicating that SharePoint Failed to find the XML file at location '12\Template\Features\PWSCommitments\feature.xml' Anyone have an idea how to fix this?

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  • Implications and benefits of removing NT AUTHORITY\SYSTEM from sysadmin role?

    - by Cade Roux
    Disclaimer: I am not a DBA. I am a database developer. A DBA just sent a report to our data stewards and is planning to remove the NT AUTHORITY\SYSTEM account from the sysadmin role on a bunch of servers. (The probably violate some audit report they received). I see a MSKB article that says not to do this. From what I can tell reading a variety of disparate information on the web, a bunch of special services/operations (Volume Copy, Full Text Indexing, MOM, Windows Update) use this account even when the SQL Server and Agent service etc are all running under dedicated accounts.

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  • Problem with apt-get [install, purge, autoremove, upgrade]

    - by Ark
    I am trying to install openvpn using apt-get, but I get an error during the process [As far as I understand the issue is with unattended-updates, which I could not upgrade due to apt-get porblem :/]. I cannot upgrade, install, autoremove or purge anything else [which I need to do since /boot is full. For upgrading I did update before trying].... Trace [on sudo apt-get autoremove]: 0 upgraded, 0 newly installed, 79 to remove and 421 not upgraded. 35 not fully installed or removed. Need to get 24.1 kB of archives. After this operation, 140 MB disk space will be freed. Do you want to continue [Y/n]? y Get:1 http://us.archive.ubuntu.com/ubuntu/ oneiric/main unattended-upgrades all 0.73ubuntu1 [24.1 kB] Fetched 24.1 kB in 0s (31.2 kB/s) Preconfiguring packages ... (Reading database ... 287206 files and directories currently installed.) Removing flashplugin-downloader:i386 ... Removing libasound2-plugins:i386 ... Removing libpulse0:i386 ... Removing libsndfile1:i386 ... Removing libvorbisenc2:i386 ... Removing libvorbis0a:i386 ... Processing triggers for libc-bin ... ldconfig deferred processing now taking place (Reading database ... 287174 files and directories currently installed.) Preparing to replace unattended-upgrades 0.73ubuntu1 (using .../unattended-upgrades_0.73ubuntu1_all.deb) ... Checking for running unattended-upgrades: Traceback (most recent call last): File "/usr/share/unattended-upgrades/unattended-upgrade-shutdown", line 27, in <module> import apt_pkg ImportError: No module named apt_pkg invoke-rc.d: initscript unattended-upgrades, action "stop" failed. dpkg: warning: subprocess old pre-removal script returned error exit status 1 dpkg - trying script from the new package instead ... Checking for running unattended-upgrades: Traceback (most recent call last): File "/usr/share/unattended-upgrades/unattended-upgrade-shutdown", line 27, in <module> import apt_pkg ImportError: No module named apt_pkg invoke-rc.d: initscript unattended-upgrades, action "stop" failed. dpkg: error processing /var/cache/apt/archives/unattended-upgrades_0.73ubuntu1_all.deb (--unpack): subprocess new pre-removal script returned error exit status 1 update-rc.d: warning: unattended-upgrades start runlevel arguments (2 3 4 5) do not match LSB Default-Start values (none) update-rc.d: warning: unattended-upgrades stop runlevel arguments (0 1 6) do not match LSB Default-Stop values (0 6) Checking for running unattended-upgrades: Traceback (most recent call last): File "/usr/share/unattended-upgrades/unattended-upgrade-shutdown", line 27, in <module> import apt_pkg ImportError: No module named apt_pkg invoke-rc.d: initscript unattended-upgrades, action "start" failed. dpkg: error while cleaning up: subprocess installed post-installation script returned error exit status 1 Errors were encountered while processing: /var/cache/apt/archives/unattended-upgrades_0.73ubuntu1_all.deb E: Sub-process /usr/bin/dpkg returned an error code (1) Maybe I missed something basic, but I would appreciate pointers on solving the issue. Thanks

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  • Removing grub and getting a dual boot of Linux Mint and Win 8.1 working after failed attempt

    - by ThroatOfWinter57
    I gave the details of my problem at reddit: http://www.reddit.com/r/linuxquestions/comments/27qrun/more_specific_questions_about_failed_win_81mint/ tl;dr: I deleted the /, /home, and swap partitions I made for mint after realizing my installation couldn't be booted into and gave the space back to my windows partition. Running boot-repair on my mint live session messed stuff up. Now I can't even boot to my live session usb because grub is left over. Windows 8.1 does work though.

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  • Why is Excel removing leading leading zeros when displaying CSV data?

    - by Velika Kudac
    I have a CSV text file with the following content: "Col1","Col2" "01",A "2",B "10", C When I open it up with Excel, it displays as shown here: Note that Cell 2A attempts to display "01" as a number without a leading 0. When I format rows 2 through 4 as "Text", it changes the display to ...but still the leading "0" is gone. Is there a way to open up a CSV file in XLS and be able to see all of the leading zeros in the file by flipping some option? I do not want to have to retype '01 in every cell that should have a leading zero. Furthermore, using a leading apostrophe necessitates that the changes be saved to a XLS format when CSV is desired. My goal is simply to use Excel to view the actual content of the file as text without Excel trying to do me any formatting favors.

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  • Removing "Transfer To..." and "Show Converted Files" from uTorrent's context menu

    - by kotekzot
    Under uTorrent version 3.1.3 (and possibly earlier), the context menu has taken on 2 new options, "Transfer To...", for moving a download to a mobile device, and "Show Converted Files", for built-in conversion. I prefer to do all my file management and conversions manually, and the options are, at best, annoying space wasters. In fact, I'm not sure these features are even available outside of uTorrent Plus, which is not something I run. Is it possible to remove them from the context menu?

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  • linux disk usage report inconsistancy after removing file. cpanel inaccurate disk usage report

    - by brando
    relevant software: Red Hat Enterprise Linux Server release 6.3 (Santiago) cpanel installed 11.34.0 (build 7) background and problem: I was getting a disk usage warning (via cpanel) because /var seemed to be filling up on my server. The assumption would be that there was a log file growing too large and filling up the partition. I recently removed a large log file and changed my syslog config to rotate the log files more regularly. I removed something like /var/log/somefile and edited /etc/rsyslog.conf. This is the reason I was suspicious of the disk usage report warning issued by cpanel that I was getting because it didn't seem right. This is what df was reporting for the partitions: $ [/var]# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda2 9.9G 511M 8.9G 6% / tmpfs 5.9G 0 5.9G 0% /dev/shm /dev/sda1 99M 53M 42M 56% /boot /dev/sda8 883G 384G 455G 46% /home /dev/sdb1 9.9G 151M 9.3G 2% /tmp /dev/sda3 9.9G 7.8G 1.6G 84% /usr /dev/sda5 9.9G 9.3G 108M 99% /var This is what du was reporting for /var mount point: $ [/var]# du -sh 528M . clearly something funky was going on. I had a similar kind of reporting inconsistency in the past and I restarted the server and df reporting seemed to be correct after that. I decided to reboot the server to see if the same thing would happpen. This is what df reports now: $ [~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda2 9.9G 511M 8.9G 6% / tmpfs 5.9G 0 5.9G 0% /dev/shm /dev/sda1 99M 53M 42M 56% /boot /dev/sda8 883G 384G 455G 46% /home /dev/sdb1 9.9G 151M 9.3G 2% /tmp /dev/sda3 9.9G 7.8G 1.6G 84% /usr /dev/sda5 9.9G 697M 8.7G 8% /var This looks more like what I'd expect to get. For consistency this is what du reports for /var: $ [/var]# du -sh 638M . question: This is a nuisance. I'm not sure where the disk usage reports issued by cpanel get their info but it clearly isn't correct. How can I avoid this inaccurate reporting in the future? It seems like df reporting wrong disk usage is a strong indicator of the source problem but I'm not sure. Is there a way to 'refresh' the filesystem somehow so that the df report is accurate without restarting the server? Any other ideas for resolving this issue?

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  • only removing index.php rule works on my NginX and CodeIgniter as rewrite. Why?

    - by Atomei Cosmin
    I am very new in rewriting in nginx but although I've spent 2 days reading on forums, I still can't get some Codeigniter rewrites working ... server { listen *:80; server_name artademy.com www.artademy.com; root /var/www/artademy.com/web; index index.html index.htm index.php index.cgi index.pl index.xhtml; if (!-e $request_filename) { rewrite ^/(.*)$ /index.php?/$1; } if (!-e $request_filename) { rewrite ^/(index.php\?)/(.*)$ /$1/mobile_app last; break; } error_log /var/log/ispconfig/httpd/artademy.com/error.log; access_log /var/log/ispconfig/httpd/artademy.com/access.log combined; ## Disable .htaccess and other hidden files location ~ /\. { deny all; access_log off; log_not_found off; } location = /favicon.ico { log_not_found off; access_log off; } location = /robots.txt { allow all; log_not_found off; access_log off; } location /stats { index index.html index.php; auth_basic "Members Only"; auth_basic_user_file /var/www/clients/client0/web3/.htpasswd_stats; } location ^~ /awstats-icon { alias /usr/share/awstats/icon; } location ~ \.php$ { try_files $uri =404; include /etc/nginx/fastcgi_params; fastcgi_pass 127.0.0.1:9012; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; fastcgi_param PATH_INFO $fastcgi_script_name; fastcgi_intercept_errors on; } } Codeigniter settings are: well for uri_protocol: REQUEST_URI; What i noticed is that from this rule: rewrite ^/(.)$ /index.php?/$1; it works ever if i write it like this: rewrite ^/(.)$ /index.php?; It might be a wild guess but it stops at the question mark... Anyhow what I need are rules as these from .htaccess: RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{QUERY_STRING} ^lang=([a-z]{2})$ RewriteRule ^([a-z]{2})$ index.php?/home_page?lang=$1 [L,QSA] RewriteRule ^([a-z]{2})$ index.php?/home_page?lang=$1 [L,QSA] #how_it_works RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^how-it-works/(en)$ index.php?/how_it_works?lang=en [L,QSA] #order_status RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^order-status/(en)$ index.php?/order_status?lang=en [L,QSA] Can anyone tell me what i'm doing wrong and show me a proper way for at least one rule? It would be more than helpful. Thank you in advance! ^^ PS: I made it work on apache by using Path_info for uri_protocol.. if this info is of any help, and i remember having kind of the same problem there too but switching to path_info made it all good.

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