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  • git-p4 submit fails with "Not a valid object name HEAD~261"

    - by Harlan
    I've got a git repository that I'd like to mirror to a Perforce repository. I've downloaded the git-p4 script (the more recent version that doesn't give deprecation warnings), and have been working with that. I've figured out how to pull changes from Perforce, but I'm getting an error when I try to sync changes from the git repo back. Here's what I've done so far: git clone [email protected]:asdf/qwerty.git git-p4 sync //depot/path/to/querty git merge remotes/p4/master (there was a single README file...) So, I've copied the origin to a clean, new director, got a lovely looking merged tree of files, and git status shows I'm up-to-date. But: > git-p4 submit fatal: Not a valid object name HEAD~261 Command failed: git cat-file commit HEAD~261 This thread on the git mailing list seems to be relevant, but I can't figure out what they're doing with all the A, B, and Cs. Could someone please clarify what "Not a valid object name" means, and what I can do to fix the problem? All I want to do is to periodically snapshot the origin/master into Perforce; a full history is not required. Thanks.

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  • Hidden features of Perl?

    - by Adam Bellaire
    What are some really useful but esoteric language features in Perl that you've actually been able to employ to do useful work? Guidelines: Try to limit answers to the Perl core and not CPAN Please give an example and a short description Hidden Features also found in other languages' Hidden Features: (These are all from Corion's answer) C# Duff's Device Portability and Standardness Quotes for whitespace delimited lists and strings Aliasable namespaces Java Static Initalizers JavaScript Functions are First Class citizens Block scope and closure Calling methods and accessors indirectly through a variable Ruby Defining methods through code PHP Pervasive online documentation Magic methods Symbolic references Python One line value swapping Ability to replace even core functions with your own functionality Other Hidden Features: Operators: The bool quasi-operator The flip-flop operator Also used for list construction The ++ and unary - operators work on strings The repetition operator The spaceship operator The || operator (and // operator) to select from a set of choices The diamond operator Special cases of the m// operator The tilde-tilde "operator" Quoting constructs: The qw operator Letters can be used as quote delimiters in q{}-like constructs Quoting mechanisms Syntax and Names: There can be a space after a sigil You can give subs numeric names with symbolic references Legal trailing commas Grouped Integer Literals hash slices Populating keys of a hash from an array Modules, Pragmas, and command-line options: use strict and use warnings Taint checking Esoteric use of -n and -p CPAN overload::constant IO::Handle module Safe compartments Attributes Variables: Autovivification The $[ variable tie Dynamic Scoping Variable swapping with a single statement Loops and flow control: Magic goto for on a single variable continue clause Desperation mode Regular expressions: The \G anchor (?{}) and '(??{})` in regexes Other features: The debugger Special code blocks such as BEGIN, CHECK, and END The DATA block New Block Operations Source Filters Signal Hooks map (twice) Wrapping built-in functions The eof function The dbmopen function Turning warnings into errors Other tricks, and meta-answers: cat files, decompressing gzips if needed Perl Tips See Also: Hidden features of C Hidden features of C# Hidden features of C++ Hidden features of Java Hidden features of JavaScript Hidden features of Ruby Hidden features of PHP Hidden features of Python

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  • Need help modifying C++ application to accept continuous piped input in Linux

    - by GreeenGuru
    The goal is to mine packet headers for URLs visited using tcpdump. So far, I can save a packet header to a file using: tcpdump "dst port 80 and tcp[13] & 0x08 = 8" -A -s 300 | tee -a ./Desktop/packets.txt And I've written a program to parse through the header and extract the URL when given the following command: cat ~/Desktop/packets.txt | ./packet-parser.exe But what I want to be able to do is pipe tcpdump directly into my program, which will then log the data: tcpdump "dst port 80 and tcp[13] & 0x08 = 8" -A -s 300 | ./packet-parser.exe Here is the script as it is. The question is: how do I need to change it to support continuous input from tcpdump? #include <boost/regex.hpp> #include <fstream> #include <cstdio> // Needed to define ios::app #include <string> #include <iostream> int main() { // Make sure to open the file in append mode std::ofstream file_out("/var/local/GreeenLogger/url.log", std::ios::app); if (not file_out) std::perror("/var/local/GreeenLogger/url.log"); else { std::string text; // Get multiple lines of input -- raw std::getline(std::cin, text, '\0'); const boost::regex pattern("GET (\\S+) HTTP.*?[\\r\\n]+Host: (\\S+)"); boost::smatch match_object; bool match = boost::regex_search(text, match_object, pattern); if(match) { std::string output; output = match_object[2] + match_object[1]; file_out << output << '\n'; std::cout << output << std::endl; } file_out.close(); } } Thank you ahead of time for the help!

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  • using ghostscript in server mode to convert pdfs to pngs

    - by emh
    while i am able to convert a specific page of a PDF to a PNG like so: gs -dSAFER -dBATCH -dNOPAUSE -sDEVICE=png16m -dGraphicsAlphaBits=4 -sOutputFile=gymnastics-20.png -dFirstPage=20 -dLastPage=20 gymnastics.pdf i am wondering if i can somehow use ghostscript's JOBSERVER mode to process several conversions without having to incur the cost of starting up ghostscript each time. from: http://pages.cs.wisc.edu/~ghost/doc/svn/Use.htm -dJOBSERVER Define \004 (^D) to start a new encapsulated job used for compatibility with Adobe PS Interpreters that ordinarily run under a job server. The -dNOOUTERSAVE switch is ignored if -dJOBSERVER is specified since job servers always execute the input PostScript under a save level, although the exitserver operator can be used to escape from the encapsulated job and execute as if the -dNOOUTERSAVE was specified. This also requires that the input be from stdin, otherwise an error will result (Error: /invalidrestore in --restore--). Example usage is: gs ... -dJOBSERVER - < inputfile.ps -or- cat inputfile.ps | gs ... -dJOBSERVER - Note: The ^D does not result in an end-of-file action on stdin as it may on some PostScript printers that rely on TBCP (Tagged Binary Communication Protocol) to cause an out-of-band ^D to signal EOF in a stream input data. This means that direct file actions on stdin such as flushfile and closefile will affect processing of data beyond the ^D in the stream. the idea is to run ghostscript in-process. the script would receive a request for a particular page of a pdf and would use ghostscript to generate the specified image. i'd rather not start up a new ghostscript process every time.

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  • Advice for Future Programmers?

    - by Nate Zaugg
    I have a buddy that is going to be giving some presentations to high-schoolers. Specifically he asked: What would you be looking for if they approached you about work? Perhaps you are in that age group right now. What do you want to know? Perhaps you are just a few years into the workforce. What do you wish someone had told you but never did? Perhaps you have children, relatives or friends in or soon to be in that age group. What are you worried they don't know about? I'm sure there are other perspectives and questions I'm not even thinking about. I'd like to hear what you have to say about it. Here was my list: Don't be afraid to try! Don't let the perception that something is too difficult stop you from experimenting. Curiosity may have killed the cat, but an un-inquisitive person is mostly useless. Stolen from Einstein: You don't really understand something until you can explain it to your grandmother. It's never enough to be smart, you also have to work well with others. Before you can be really smart, you must learn how to learn. There will always be someone smarter than you are -- Become their buddy! Get to know great minds and learn all you can. Some knowledge can only be expressed this way. Communication, Communication, Communication! Projects rarely fail because of technical reasons and the difference between good programmers and outstanding programmers is how well they communicate. A good work ethic never goes unnoticed. Know when to ask for help and when to figure something out for yourself.

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  • How to map IDictionary<string, object> in Fluent NHibernate?

    - by user298221
    I am looking to persist user preferences into a collection of name value pairs, where the value may be an int, bool, or string. There are a few ways to skin this cat, but the most convenient method I can think of is something like this: public class User { public virtual IDictionary<string, object> Preferences { get; set; } } with its usage as: user.Preferences["preference1"] = "some value"; user.Preferences["preference2"] = 10; user.Preferences["preference3"] = true; var pref = (int)user.Preferences["preference2"]; I'm not sure how to map this in Fluent NHibernate, though I do think it is possible. Generally, you would map a simpler Dictionary<string, string> as: HasMany(x => x.Preferences) .Table("Preferences") .AsMap("preferenceName") .Element("preferenceValue"); But with a type of 'object', NHibernate doesn't know how to deal with it. I imagine a custom UserType could be created that breaks an 'object' down to a string representing its Type and a string representing the value. We would have a table that looks kind of like this: Table Preferences userId (int) preferenceName (varchar) preferenceValue (varchar) preferenceValueType (varchar) and the hibernate mapping would like this: <map name="Preferences" table="Preferences"> <key column="userId"></key> <index column="preferenceName" type="String" /> <element type="ObjectAsStringUserType, Assembly"> <column name="preferenceValue" /> <column name="preferenceValueType"/> </element> </map> I'm not sure how you would map this in Fluent NHibernate. Maybe there's a better way to do this, or maybe I should just suck it up and use IDictionary<string, string>. Any ideas?

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  • Average of two strings in alphabetical/lexicographical order

    - by Bemmu
    Suppose you take the strings 'a' and 'z' and list all the strings that come between them in alphabetical order: ['a','b','c' ... 'x','y','z']. Take the midpoint of this list and you find 'm'. So this is kind of like taking an average of those two strings. You could extend it to strings with more than one character, for example the midpoint between 'aa' and 'zz' would be found in the middle of the list ['aa', 'ab', 'ac' ... 'zx', 'zy', 'zz']. Might there be a Python method somewhere that does this? If not, even knowing the name of the algorithm would help. I began making my own routine that simply goes through both strings and finds midpoint of the first differing letter, which seemed to work great in that 'aa' and 'az' midpoint was 'am', but then it fails on 'cat', 'doggie' midpoint which it thinks is 'c'. I tried Googling for "binary search string midpoint" etc. but without knowing the name of what I am trying to do here I had little luck.

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  • How to connect from ruby to MS Sql Server

    - by apetrov
    Hi Crowd! I'm trying to connect to the sql server 2005 database from *NIX machine: I have the following configuration: Linux 64bit ruby -v ruby 1.8.6 (2007-09-24 patchlevel 111) [x86_64-linux] important gems: dbd-odbc (0.2.4) dbi (0.4.1) active record sql server adapter - as plugin ruby-odbc 0.9996 (installed without any options.) unixODBC is installed freeTDS is installed cat /etc/odbcinst.ini [FreeTDS] Description = TDS driver (Sybase/MS SQL) Driver = /usr/lib/libtdsodbc.so Setup = /usr/lib/odbc/libtdsS.so CPTimeout = CPReuse = FileUsage = 1 DSN: DRIVER=FreeTDS;TDS_Version=8.0;SERVER=XXXX;DATABASE=XXX;Port=1433;uid=XXX;pwd=XXXX;" or DRIVER=/usr/lib/libtdsodbc.so;TDS_Version=8.0;SERVER=XXXX;DATABASE=XXX;Port=1433;uid=XXX;pwd=XXXX;" I receive the following error: >>ActiveRecord::Base.sqlserver_connection({"mode"=>"ODBC", "adapter"=>"sqlserver", "dsn"=>my_dns) DBI::DatabaseError: IM002 (0) [unixODBC][Driver Manager]Data source name not found, and no default driver specified from /usr/lib/ruby/1.8/DBD/ODBC/ODBC.rb:95:in `connect' from /usr/lib/ruby/1.8/dbi.rb:424:in `connect' from /usr/lib/ruby/1.8/dbi.rb:215:in `connect' from /opt/ublip/rails/current/vendor/plugins/activerecord-sqlserver-adapter/lib/active_record/connection_adapters/sqlserver_adapter.rb:47:in `sqlserver_connection' It looks like ODBC unable to find appropriate ODBC driver, but I have no ideas why. I had a problem with /usr/lib/libtdsodbc.so which is empty in default debian package free-tds dev, but i solved it with remove broken package and installation from sources. Will appreciate any thought! Thanks & Regards Note: I'm albe to connect using the same steps on mac 10.5

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  • Android HTTPClient not working inspite of giving permissions in manifest file.

    - by primal
    Hi, I was trying http-cleint tutorials from svn.apache.org. While running the application I am getting the following error in console. [2010-04-30 09:26:36 - HalloAndroid] ActivityManager: java.lang.SecurityException: Permission Denial: starting Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=com.org.example/.HalloAndroid } from null (pid=-1, uid=-1) requires android.permission.INTERNET I have added android.permission.INTERNET in AndroidManifest.xml. <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.org.example" android:versionCode="1" android:versionName="1.0"> <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:name=".HalloAndroid" android:label="@string/app_name" android:permission="android.permission.INTERNET"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> <uses-permission android:name="android.permission.INTERNET"></uses-permission> </manifest> The java code in HalloAndroid.java is as follows HttpClient httpclient = new DefaultHttpClient(); HttpGet httpget2 = new HttpGet("http://google.com/"); HttpResponse response2 = null; try { response2 = httpclient.execute(httpget2); } catch (ClientProtocolException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } catch (IOException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } HttpEntity entity = response2.getEntity(); if (entity != null) { long len = entity.getContentLength(); if (len != -1 && len < 2048) { try { Log.d(TAG, EntityUtils.toString(entity)); } catch (ParseException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } else { // Stream content out } Any help is much appreciated.

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  • ActivityThread exception in Android?

    - by Praveen Chandrasekaran
    My Log CAT Value: 05-17 15:16:30.572: ERROR/ActivityThread(17448): Activity com.example.brown.Bru_Maps has leaked IntentReceiver android.net.NetworkConnectivityListener$ConnectivityBroadcastReceiver@432e6360 that was originally registered here. Are you missing a call to unregisterReceiver()? 05-17 15:16:30.572: ERROR/ActivityThread(17448): android.app.IntentReceiverLeaked: Activity com.example.brown.Bru_Maps has leaked IntentReceiver android.net.NetworkConnectivityListener$ConnectivityBroadcastReceiver@432e6360 that was originally registered here. Are you missing a call to unregisterReceiver()? 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.app.ActivityThread$PackageInfo$ReceiverDispatcher.<init>(ActivityThread.java:748) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.app.ActivityThread$PackageInfo.getReceiverDispatcher(ActivityThread.java:576) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.app.ApplicationContext.registerReceiverInternal(ApplicationContext.java:770) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.app.ApplicationContext.registerReceiver(ApplicationContext.java:757) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.app.ApplicationContext.registerReceiver(ApplicationContext.java:751) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.content.ContextWrapper.registerReceiver(ContextWrapper.java:290) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.net.NetworkConnectivityListener.startListening(NetworkConnectivityListener.java:138) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at com.google.android.maps.MapActivity.onResume(MapActivity.java:232) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1225) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.app.Activity.performResume(Activity.java:3559) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2838) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2866) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1819) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.os.Handler.dispatchMessage(Handler.java:99) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.os.Looper.loop(Looper.java:123) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at android.app.ActivityThread.main(ActivityThread.java:4203) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at java.lang.reflect.Method.invokeNative(Native Method) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at java.lang.reflect.Method.invoke(Method.java:521) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:791) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:549) 05-17 15:16:30.572: ERROR/ActivityThread(17448): at dalvik.system.NativeStart.main(Native Method) What is the Activity Thread Exception in Android? Please Help.

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  • This is more a matlab/math brain teaser than a question

    - by gd047
    Here is the setup. No assumptions for the values I am using. n=2; % dimension of vectors x and (square) matrix P r=2; % number of x vectors and P matrices x1 = [3;5] x2 = [9;6] x = cat(2,x1,x2) P1 = [6,11;15,-1] P2 = [2,21;-2,3] P(:,1)=P1(:) P(:,2)=P2(:) modePr = [-.4;16] TransPr=[5.9,0.1;20.2,-4.8] pred_modePr = TransPr'*modePr MixPr = TransPr.*(modePr*(pred_modePr.^(-1))') x0 = x*MixPr Then it was time to apply the following formula to get myP , where µij is MixPr. I used this code to get it: myP=zeros(n*n,r); Ptables(:,:,1)=P1; Ptables(:,:,2)=P2; for j=1:r for i = 1:r; temp = MixPr(i,j)*(Ptables(:,:,i) + ... (x(:,i)-x0(:,j))*(x(:,i)-x0(:,j))'); myP(:,j)= myP(:,j) + temp(:); end end Some brilliant guy proposed this formula as another way to produce myP for j=1:r xk1=x(:,j); PP=xk1*xk1'; PP0(:,j)=PP(:); xk1=x0(:,j); PP=xk1*xk1'; PP1(:,j)=PP(:); end myP = (P+PP0)*MixPr-PP1 I tried to formulate the equality between the two methods and seems to be this one. To make things easier, I ignored from both methods the summation of matrix P. where the first part denotes the formula that I used, while the second comes from his code snippet. Do you think this is an obvious equality? If yes, ignore all the above and just try to explain why. I could only start from the LHS, and after some algebra I think I proved it equals to the RHS. However I can't see how did he (or she) think of it in the first place.

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  • Perl, module export symbol

    - by Mike
    I'm having trouble understanding how to export a package symbol to a namespace. I've followed the documentation almost identically, but it seems to not know about any of the exporting symbols. mod.pm #!/usr/bin/perl package mod; use strict; use warnings; require Exporter; @ISA = qw(Exporter); @EXPORT=qw($a); our $a=(1); 1; test.pl $ cat test.pl #!/usr/bin/perl use mod; print($a); This is the result of running it $ ./test.pl Global symbol "@ISA" requires explicit package name at mod.pm line 10. Global symbol "@EXPORT" requires explicit package name at mod.pm line 11. Compilation failed in require at ./test.pl line 3. BEGIN failed--compilation aborted at ./test.pl line 3. $ perl -version This is perl, v5.8.4 built for sun4-solaris-64int

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  • Is there a better way to create a generic convert string to enum method or enum extension?

    - by Kelsey
    I have the following methods in an enum helper class (I have simplified it for the purpose of the question): static class EnumHelper { public enum EnumType1 : int { Unknown = 0, Yes = 1, No = 2 } public enum EnumType2 : int { Unknown = 0, Dog = 1, Cat = 2, Bird = 3 } public enum EnumType3 : int { Unknown = 0, iPhone = 1, Andriod = 2, WindowsPhone7 = 3, Palm = 4 } public static EnumType1 ConvertToEnumType1(string value) { return (string.IsNullOrEmpty(value)) ? EnumType1.Unknown : (EnumType1)(Enum.Parse(typeof(EnumType1), value, true)); } public static EnumType2 ConvertToEnumType2(string value) { return (string.IsNullOrEmpty(value)) ? EnumType2.Unknown : (EnumType2)(Enum.Parse(typeof(EnumType2), value, true)); } public static EnumType3 ConvertToEnumType3(string value) { return (string.IsNullOrEmpty(value)) ? EnumType3.Unknown : (EnumType3)(Enum.Parse(typeof(EnumType3), value, true)); } } So the question here is, can I trim this down to an Enum extension method or maybe some type of single method that can handle any type. I have found some examples to do so with basic enums but the difference in my example is all the enums have the Unknown item that I need returned if the string is null or empty (if no match is found I want it to fail). Looking for something like the following maybe: EnumType1 value = EnumType1.Convert("Yes"); // or EnumType1 value = EnumHelper.Convert(EnumType1, "Yes"); One function to do it all... how to handle the Unknown element is the part that I am hung up on.

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  • Average of two strings in alphabetical order

    - by Bemmu
    Suppose you take the strings 'a' and 'z' and list all the strings that come between them in alphabetical order: ['a','b','c' ... 'x','y','z']. Take the midpoint of this list and you find 'm'. So this is kind of like taking an average of those two strings. You could extend it to strings with more than one character, for example the midpoint between 'aa' and 'zz' would be found in the middle of the list ['aa', 'ab', 'ac' ... 'zx', 'zy', 'zz']. Might there be a Python method somewhere that does this? If not, even knowing the name of the algorithm would help. I began making my own routine that simply goes through both strings and finds midpoint of the first differing letter, which seemed to work great in that 'aa' and 'az' midpoint was 'am', but then it fails on 'cat', 'doggie' midpoint which it thinks is 'c'. Rather than invent a method I thought it better to ask. I tried Googling for "binary search string midpoint" etc. but without knowing the name of what I am trying to do here I had little luck.

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  • Automatically stashing

    - by Readonly
    The section Last links in the chain: Stashing and the reflog in http://ftp.newartisans.com/pub/git.from.bottom.up.pdf recommends stashing often to take snapshots of your work in progress. The author goes as far as recommending that you can use a cron job to stash your work regularly, without having to do a stash manually. The beauty of stash is that it lets you apply unobtrusive version control to your working process itself: namely, the various stages of your working tree from day to day. You can even use stash on a regular basis if you like, with something like the following snapshot script: $ cat <<EOF > /usr/local/bin/git-snapshot #!/bin/sh git stash && git stash apply EOF $ chmod +x $_ $ git snapshot There’s no reason you couldn’t run this from a cron job every hour, along with running the reflog expire command every week or month. The problem with this approach is: If there are no changes to your working copy, the "git stash apply" will cause your last stash to be applied over your working copy. There could be race conditions between when the cron job executes and the user working on the working copy. For example, "git stash" runs, then the user opens the file, then the script's "git stash apply" is executed. Does anybody have suggestions for making this automatic stashing work more reliably?

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  • Showing recent post from a specific category

    - by kwek-kwek
    I wanted to show post from just recent post from a specific categories so far this is what I have but: <ul> <?php $number_recents_post = 5; $recent_posts = wp_get_recent_posts($number_recents_post); foreach($recent_posts as $post){ echo '<li><a href="' . get_permalink($post["ID"]) . '" title="Look '.$post["post_title"].'" >' . $post["post_title"].'</a> </li> '; } ?> </ul> I tried turning it into this but not working <ul> <?php $number_recents_post = 5; $recent_posts = wp_get_recent_posts($number_recents_post . 'cat=3,4,5'); foreach($recent_posts as $post){ echo '<li><a href="' . get_permalink($post["ID"]) . '" title="Look '.$post["post_title"].'" >' . $post["post_title"].'</a> </li> '; } ?> </ul> Please let me know what am I doing wrong....

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  • How to route all subdomains to a single host using mDNS?

    - by John Mee
    I have a development webserver hosting as "myhost.local" which is found using Bonjour/mDNS. The server is running avahi-daemon. The webserver also wants to handle any subdomains of itself. Eg "cat.myhost.local" and "dog.myhost.local" and "guppy.myhost.local". Given that myhost.local is on a dynamic ip address from dhcp, is there still a way to route all requests for the subdomains to myhost.local? I'm starting to think it not currently possible... http://marc.info/?l=freedesktop-avahi&m=119561596630960&w=2 You can do this with the /etc/avahi/hosts file. Alternatively you can use avahi-publish-host-name. No, he cannot. Since he wants to define an alias, not a new hostname. I.e. he only wants to register an A RR, no reverse PTR RR. But if you stick something into /etc/avahi/hosts then it registers both, and detects a collision if the PTR RR is non-unique, which would be the case for an alias.

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  • can't properly shutdown ubuntu and sound problem on HP mini 311 netbook

    - by Viele
    hi, I recently bought a HP mini 311 netbook. I replaced its harddrive and installed ubuntu 10.04. Since then, I have encountered some very strange problem with its sound and shutdown/reboot. At times, when I start the computer, it will have no sound, on the GUI the sound is at max, but no sound is available. This sometimes also happen after after upgrades, hibernate, and toggling the wireless radio button. Strangely, when the sound is out the device will also refuse to be shutdown. If I shutdown the computer using the GUI, it will simply go back to the log in screen without actually shutting down. If I use "sudo shutdown 0", the computer will hang on the loading screen of the shut down process. I had to force the pc to shutdown by holding the power button down. usually (probably always) after I force a turn-off then start off again. the sound and shutdown become normal. I wonder if anyone have clues regarding to the cause of this problem. This the info about the computer: 1) installed ubuntu 10.04LTS RC, later upgraded to formal released version. 2) cat /proc/asound/version == "Advanced Linux Sound Architecture Driver Version 1.0.21." however, when doing 'alsaconf' the version displayed is 1.0.23 any help is appreciated. Thanks

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  • Is there a way to get YQL to return HTML?

    - by Joe Shaw
    I am trying to use YQL to extract a portion of HTML from a series of web pages. The pages themselves have slightly different structure (so a Yahoo Pipes "Fetch Page" with its "Cut content" feature does not work well) but the fragment I am interested in always has the same class attribute. If I have an HTML page like this: <html> <body> <div class="foo"> <p>Wolf</p> <ul> <li>Dog</li> <li>Cat</li> </ul> </div> </body> </html> and use a YQL expression like this: SELECT * FROM html WHERE url="http://example.com/containing-the-fragment-above" AND xpath="//div[@class='foo']" what I get back are the (apparently unordered?) DOM elements, where what I want is the HTML content itself. I've tried SELECT content as well, but that only selects textual content. I want HTML. Is this possible?

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  • How to use JQUERY to filter table rows dynamically using multiple form inputs

    - by tresstylez
    I'm displaying a table with multiple rows and columns. I'm using a JQUERY plugin called uiTableFilter which uses a text field input and filters (shows/hides) the table rows based on the input you provide. All you do is specify a column you want to filter on, and it will display only rows that have the text field input in that column. Simple and works fine. I want to add a SECOND text input field that will help me narrow the results down even further. So, for instance if I had a PETS table and one column was petType and one was petColor -- I could type in CAT into the first text field, to show ALL cats, and then in the 2nd text field, I could type black, and the resulting table would display only rows where BLACK CATS were found. Basically, a subset. Here is the JQUERY I'm using: $("#typeFilter").live('keyup', function() { if ($(this).val().length > 2 || $(this).val().length == 0) { var newTable = $('#pets'); $.uiTableFilter( theTable, this.value, "petType" ); } }) // end typefilter $("#colorFilter").live('keyup', function() { if ($(this).val().length > 2 || $(this).val().length == 0) { var newTable = $('#pets'); $.uiTableFilter( newTable, this.value, "petColor" ); } }) // end colorfilter Problem is, I can use one filter, and it will display the correct subset of table rows, but when I provide input for the other filter, it doesn't seem to recognize the visible table rows that are remaining from the previous column, but instead it appears that it does an entirely new filtering of the original table. If 10 rows are returned after applying one filter, the 2nd filter should only apply to THOSE 10 rows. I've tried LIVE and BIND, but not working. Can anyone shed some light on where I'm going wrong? Thanks!

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  • Sending wordpress title-value across PHP-pages

    - by VoodooBurger
    I recently made this wordpress blog, where you can sign up a team for an event, when clicking a link under the event post. This link takes you to a sign-up form on another php-page. The link is added in the loop of the events-template like this: <?php query_posts('cat=8');?> <?php if (have_posts()) : while (have_posts()) : the_post(); ?> <div class="post" id="post-<?php the_ID(); ?>"> <h2><a href="<?php the_permalink() ?>"><?php the_title(); ?></a></h2> <div id="tilmeldknap"><?php wp_list_pages("title_li=&depth=1&include=63"); ?></div> <?php include (TEMPLATEPATH . '/inc/meta.php' ); ?>... So every upcoming event will have the same sign-up button. All I need now is to somehow send the specific event-post-title along to the sign-page, so that the following form-submit action will contain that title aswell. But since I'm not very good at php it seems like a mystery, altho I bet it's very simple! I'm guessing it's something like: $event=$_POST['single_post_title()'] But how to get the value to the next php-page I have no idea... please help, anyone :) An eksample can be seen throught this link: http://gadebold.dk/events/ The link sais: 'Tilmeld Hold'

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  • log4j vs. System.out.println - logger advantages?

    - by wishi_
    Hi! I'm newly using log4j in a project. A fellow programmer told me that using System.out.println is considered bas style and that log4j is something like standard for logging matters nowadays. We do lots of JUnit testing - System.out stuff turns out to be harder to test. Therefore I began utilizing log4j for a Console controller class, that's just handling commandline parameters. // some logger config org.apache.log4j.BasicConfigurator.configure(); Logger logger = LoggerFactory.getLogger(Console.class); Category cat = Category.getRoot(); Seems to work: logger.debug("String"); Produces: 1 [main] DEBUG project.prototype.controller.Console - String I got two questions regarding this: From my basic understanding using this logger should provide me comfortable options to write a logfile with timestamps - instead of spamming the console - if debug mode is enabled at the logger? Why is System.out.println harder to test? I searched stackoverflow and found a testing recipe. So I wonder what kind of advantage I really get by using log4j.

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  • CSS Parser - Insert mtimes

    - by brad
    What command line tool can I use to automatically insert mtimes into urls in my css files for the purposes of breaking the cache? /* before */ .example { background: url(example.jpg); } /* after */ .example { background: url(example.jpg?1271298451); } Also, I would like this tool to spit out the latest mtime as the css files mtime. (If the css file is still cached then the new urls will not get to the client.) In searching the web, I have found very few tools that can do this. I am even considering rolling my own, but have found very little in the way of css parsers that are actively maintained. A candidate should be: fast (I don't want to wait 30 seconds on deployment) command line accessible (something like "cat foo.css bar.css | cssmtime out.css") What I've found so Far yui compressor - initially I thought I would extend the yui compressor to do this, but found that it is implemented as a bunch of regex's and not a parser. csstidy - last release was in 2007 and development has been suspended, but does have an option for inserting mtimes (also written in php, something I have no experience in) cssutils - python sac implementation - seems to be actively maintained, but also seems like overkill for my needs. Also, written in python which I have experience with csspool - ruby sac implementation - I don't know much ruby, but would like to learn other sac implementations - There are several java implementations, and a c implementation neither of which I know much about What's your experience? Have you used any of these libraries? Was the experience positive? Would you recommend I go with them for my purposes?

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  • sqrt(int_value + 0.0) -- Does it have a purpose?

    - by Earlz
    Hello, while doing some homework in my very strange C++ book, which I've been told before to throw away, had a very peculiar code segment. I know homework stuff always throws in extra "mystery" to try to confuse you like indenting 2 lines after a single-statement for-loop. But this one I'm confused on because it seems to serve some real-purpose. basically it is like this: int counter=10; ... if(pow(floor(sqrt(counter+0.0)),2) == counter) ... I'm interested in this part especially: sqrt(counter+0.0) Is there some purpose to the +0.0? Is this the poormans way of doing a static cast to a double? Does this avoid some compiler warning on some compiler I do not use? The entire program printed the exact same thing and compiled without warnings on g++ whenever I left out the +0.0 part. Maybe I'm not using a weird enough compiler? Edit: Also, does gcc just break standard and not make an error for Ambiguous reference since sqrt can take 3 different types of parameters? [earlz@EarlzBeta-~/projects/homework1] $ cat calc.cpp #include <cmath> int main(){ int counter=0; sqrt(counter); } [earlz@EarlzBeta-~/projects/homework1] $ g++ calc.cpp /usr/lib/libstdc++.so.47.0: warning: strcpy() is almost always misused, please use strlcpy() /usr/lib/libstdc++.so.47.0: warning: strcat() is almost always misused, please use strlcat() [earlz@EarlzBeta-~/projects/homework1] $

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  • Filtering Wikipedia's XML dump: error on some accents

    - by streetpc
    I'm trying to index Wikpedia dumps. My SAX parser make Article objects for the XML with only the fields I care about, then send it to my ArticleSink, which produces Lucene Documents. I want to filter special/meta pages like those prefixed with Category: or Wikipedia:, so I made an array of those prefixes and test the title of each page against this array in my ArticleSink, using article.getTitle.startsWith(prefix). In English, everything works fine, I get a Lucene index with all the pages except for the matching prefixes. In French, the prefixes with no accent also work (i.e. filter the corresponding pages), some of the accented prefixes don't work at all (like Catégorie:), and some work most of the time but fail on some pages (like Wikipédia:) but I cannot see any difference between the corresponding lines (in less). I can't really inspect all the differences in the file because of its size (5 GB), but it looks like a correct UTF-8 XML. If I take a portion of the file using grep or head, the accents are correct (even on the incriminated pages, the <title>Catégorie:something</title> is correctly displayed by grep). On the other hand, when I rectreate a wiki XML by tail/head-cutting the original file, the same page (here Catégorie:Rock par ville) gets filtered in the small file, not in the original… Any idea ? Alternatives I tried: Getting the file (commented lines were tried wihtout success): FileInputStream fis = new FileInputStream(new File(xmlFileName)); //ReaderInputStream ris = ReaderInputStream.forceEncodingInputStream(fis, "UTF-8" ); //(custom function opening the stream, reading it as UFT-8 into a Reader and returning another byte stream) //InputSource is = new InputSource( fis ); is.setEncoding("UTF-8"); parser.parse(fis, handler); Filtered prefixes: ignoredPrefix = new String[] {"Catégorie:", "Modèle:", "Wikipédia:", "Cat\uFFFDgorie:", "Mod\uFFFDle:", "Wikip\uFFFDdia:", //invalid char "Catégorie:", "Modèle:", "Wikipédia:", // UTF-8 as ISO-8859-1 "Image:", "Portail:", "Fichier:", "Aide:", "Projet:"}; // those last always work

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