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  • Which header files are necessary to run this code snippet?

    - by httpinterpret
    It's from here,but fails when compiling: int main(int argc, char **argv) { struct hostent { char *h_name; // main name char **h_aliases; // alternative names (aliases) int h_addrtype; // address type (usually AF_INET) int h_length; // length of address (in octets) char **h_addr_list; // alternate addresses (in Network Byte Order) }; #define h_addr h_addr_list[0] // First address of h_addr_list. struct hostent *info_stackoverflow; int i = 0; info_stackoverflow = gethostbyname( "www.stackoverflow.com" ); printf("The IP address of %s is %s", info_stackoverflow->h_name, inet_ntoa( * ((struct in_addr *)info_stackoverflow->h_addr ))); /* aliases */ while( *(pc_ip->h_aliases + i) != NULL ) { printf("\n\tAlias: %s", *(pc_ip->h_aliases + i) ); i++; } }

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  • Pre-populating Radio Buttons with Java

    - by Gary Deuces Rozanski
    Is it possible to pre-populate a radio button, using jsp, depending on the value in the database? If so, how? I have done research here at StackOverflow & Google but with no real solution. p.s. I hope somebody can help me out with a question. As you will see from previous questions, I am not a developer, but get loaded with questions being the most technical on my team. oh the joy. Any help will be appreciated & I apologize in advance if my question is dumb.

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  • ASP.NET MVC Generic Controllers and Spring.NET

    - by Jason
    Hello, I am creating an application using ASP.NET MVC (2) and Spring.NET. Since most of my Controller implementations just implement the similar CRUD operations, I would like to just create a single Generic controller, as explained here: http://stackoverflow.com/questions/848904/in-asp-net-mvc-is-it-possible-to-make-a-generic-controller However, the above example doesn't take DI frameworks into consideration. What I'm thinking is to create this (warning: this is an ugly mass of code I need help with): public SpringGenericControllerFactory : DefaultControllerFactory { public IController CreateController(RequestContext requestContext, string controllerName) { // Determine the controller type to return Type controllerType = Type.GetType("MyController").MakeGenericType(Type.GetType(controllerName)); // Return the controller return Activator.CreateInstance(controllerType) as IController; } } The entries in objects.xml would look something like this: <object id="controllerFactory" type="Application.Controllers.SpringGenericControllerFactory" /> <object id="DepartmentController" factory-method="CreateController" factory-object="controllerFactory" /> Can anyone pick through this and offer advice?

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  • Integrating my new program with Windows

    - by Carlos
    I've written a log parser, with some generous and insightful help from the SO community: http://stackoverflow.com/questions/2906630/keeping-the-ui-responsive-while-parsing-a-very-large-logfile Now, I'd like to be able to right click one of these logs, select "MyNewLogParser" from "Open With.." and see it open in my new program. This would require me to Change something about my XP installation to show my program in the dropdown list Change the program so that it knows to open the selected file and run the parsing. What do you call these things, and how is it done? I don't know what to search for...

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  • What's the requests/second standard for scraping websites?

    - by feydr
    This was the closest question to my question and it wasn't really answered very well imo: http://stackoverflow.com/questions/2022030/web-scraping-etiquette I'm looking for the answer to #1: How many requests/second should you be doing to scrape? Right now I pull from a queue of links. Every site that gets scraped has it's own thread and sleeps for 1 second in between requests. I ask for gzip compression to save bandwidth. Are there standards for this? Surely all the big search engines have some set of guidelines they follow in regards to this.

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  • (Pathinfo vs fnmatch part 2) Speed benchmark reversed on Windows and Mac

    - by zaf
    On a previous question the pathinfo and fnmatch functions were benchmarked and the answers all came out opposite to my benchmark results. You can read the different results with the benchmark code here: http://stackoverflow.com/questions/2693428/pathinfo-vs-fnmatch I couldn't work it out until I ran the same code on a machine running vista. The results then matched the other users. My main machine is a mac. So, my questions are: Why do we get these two different results? Could this apply to other functions?

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  • CakePHP - radio button not showing error message

    - by teepusink
    Hi, I'm unable to get the error message to show up when creating a radio form using the CakePHP form helper. This is what I have now. $options=array('active'=>'Active','inactive'=>'Inactive'); echo $form->input('Status', array( 'type' => 'radio', 'id' => 'EntryStatus', 'name' => 'data[Entry][status]', 'options' => $options )); What am I missing? I'm using CakePHP 1.2.7 and this is what I have in the validation 'status' = array( 'notempty' = array( 'rule' = 'notempty', 'required' = true, 'message' = 'yo' ) ) Tried the answer from http://stackoverflow.com/questions/1388823/form-helper-for-creating-radio-button-in-cakephp and it's giving me a select option form instead. Thanks, Tee

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  • blank space on google home page

    - by topgun_ivard
    2 questions, i was doing nothing productive, and tried selecting the google home page (a left click drag and select whole page) on google.com i see that beside the search box, on the left side, there is an empty space &nbsp; i looked up the source code and there indeed was a <td width=25%>&nbsp;</td> stupid as it may sound, but i was still curious to know why the blank space is out there..or is it just a simple typo?? :) also, any idea what window.lol&&lol() does? curious yet again, google search didnt get me any result and i thought i would turn to stackoverflow to enlighten me... thanks, ivar

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  • advanced python autovivification

    - by Zhang18
    This question is about implementing the full PERL autovivification in python. I know similary questions were asked before and so far the best answre is http://stackoverflow.com/questions/635483/what-is-the-best-way-to-implement-nested-dictionaries-in-python/652284#652284. However, I'm looking to do this: a['x']['y'].append('z') without declaring a['x']['y'] = [] first, or rather, not declaring a['x'] = {} either. I know dict and list classes sorta don't mix so this is hard, but I'm interested in seeing if someone has an ingenius solution probably involving creating an inherited class from dict but defined a new append method on it? I also know this might throw off some python purists who will ask me to stick with Perl. But even just for a challenge, I'd like to see something. thx!

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  • Variable collation with MySQL stored function?

    - by Chad Johnson
    I want to do something like this in a stored procedure: IF case_sensitive = FALSE THEN SET search_collation = "utf8_unicode_ci"; ELSE SET search_collation = "utf8_bin"; END IF; INSERT INTO TABLE1 (field1, field2) SELECT * FROM TABLE 2 WHERE some_field LIKE '%rarf%' collate search_collation; However, when I do this, I get ERROR 1273 (HY000): Unknown collation: 'search_collation' Also, if I do what's suggested at http://stackoverflow.com/questions/1680850/mysql-stored-procedures-use-a-variable-as-the-database-name-in-a-cursor-declara/2070021#2070021 I get Dynamic SQL is not allowed in stored function or trigger How can I use a dynamic collation?

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  • Best PHP framework for jQuery?

    - by Radagaisus
    I've read all the answers on stackoverflow for similar questions but no one really laid down an explanation: why is zend/symfony/kohana/cakePHP the best for jQuery? what is the difference? I'm writing a snazzy ultra-cool web 2.0 app with google maps and facebook connect integration plus a bunch of other APIs. Almost everything will be AJAX vis JSON. For me PHP is a burden, an unnecessary evil. I need database control, almost always via JSON. I need user authentication. This is all. Nothing fancy. And I need it to scale. Most of all I need it to work effortlessly with jQuery, I need it to be jQuery's BFF, and I need to know why it is so. Thank you very much EDIT: The candidates right now are Yii, CodeIgniter and MongoDB.

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  • Using finch first time. How to play mp3,ogg or other formats (wav files to big) ?

    - by Allisone
    My *.wav's work as expected. But wav files are to big, so I want to play *.mp3 or *.ogg but it doesn't work. I use this lines of code found in the finch Demo project engine = [[Finch alloc] init]; sitar = [[Sound alloc] initWithFile:RSRC(@"sitar.wav")]; [sitar play]; So I only change sitar.wav into my .mp3 filename. Note 1: It mustn't be mp3 or ogg, any file format not as huge as wav should be ok, but which ? Note 2: I didn't know how to use sound, so I searched and found finch here at stackoverflow. It looks easy, so I would like to use that, but if you know some other easy way to play that sound files (ambient + effects sound with compressed codec) I would also switch to that other technique.

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  • Detach many subdirectories into a new, separate Git repository

    - by prisonerjohn
    This question is based on http://stackoverflow.com/questions/359424/detach-subdirectory-into-separate-git-repository Instead of detaching a single subdirectory, I want to detach a couple. For example, my current directory tree looks like this: /apps /AAA /BBB /CCC /libs /XXX /YYY /ZZZ And I would like this instead: /apps /AAA /libs /XXX The --subdirectory-filter argument to git filter-branch won't work because it gets rid of everything except for the given directory the first time it's run. I thought using the --index-filter argument for all unwanted files would work (albeit tedious), but if I try running it more than once, I get the following message: Cannot create a new backup. A previous backup already exists in refs/original/ Force overwriting the backup with -f Any ideas? TIA

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  • Is there such a thing as too many tables?

    - by Stacey
    I've been searching stackoverflow for about an hour now and couldn't find any topics related, so I apologize if this is a duplicate question. My inquery is this. Is there a point at which there are too many tables in a database? Even if the structure is well organized, thought out, and perfectly facilitates the design intent? I have a database that is quickly approaching 40 tables - about 10 main ones, and over 30 ancillary tables (junction tables, 'enumeration' tables, etc). Am I just a bad developer - or should I be trying something different? It seems like so many to me, I'm really afraid at how it will impact the performance of the project. I have done a lot of condensing where possible, grouped similar things where possible, etc. The database is built in MS-SQL 2008.

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  • Extract a sentence out of sentences separated by delimitors

    - by Laura
    Below is a sample line I have extracted from a website: below a satisfactory level; &quot;an off year for tennis&quot;; &quot;his performance was off&quot; The output displays as: below a satisfactory level; "an off year for tennis"; "his performance was off" I want to get only the first sentence "below a satisfactory level"; Here is the code I have tried after exploring many stackoverflow posts: $data=explode('; ',$str); echo $data[0]; But somehow it is not working. Thanks in advance.

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  • OpenGL ES displaying HUD display Text can't be colored black on top of textured 3D objects

    - by ivanceras
    This is a follow-up of this question on here http://iphonedevelopment.blogspot.com/2010/02/drawing-hud-display-in-opengl-es.html It tackles on the HUD (heads up display) which is based on this tutorial http://stackoverflow.com/questions/2681102/opengl-es-displaying-hud-display-has-no-color-on-top-of-textured-3d-objects I wanted to set the "Text" in color BLACK, but it is more complicated than what I thought. Setting it to some other color other than black "glColor4f(0.0, 0.0, 0.0, 1.0);" is just fine. I assume that the culprit must be in the Blending function "glBlendFunc (GL_ONE, GL_ONE);" I experimented a lot of combinations with no luck. Has anyone experimented on this one on top of textured 3D in the backgrounds working?

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  • Javascript parent page redirection from iframe.

    - by Danil
    Hello to all. I need to implement parent page redirection from iframe. I know that it is impossible to do in different domains due to browsers security. However I found that links have target attribute and tried to use it in the following way: <a href="http://google.com" target="_top" id="testParentRedirect">someLink</a> It works fine if I click this link manually, but I couldn't find cross-browser solution to simulate it using javascript. document.getElementById('testParentRedirect').click(); This works fine in IE, however Firefox and Safary don't know click function :). I tried to work with jquery, but for some reason they don't simulate click event for links. (see following post) I couldn't find any appropriate solution on stackoverflow. Maybe someone could help me in it. I will appreciate it. :)

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  • Listing like appstore in firefox or any other browser for windows/desktop linux

    - by jenso
    A little question about the listing in iPhone OS and some other applications, and possibly in Android Market. When listing the apps, it fills the list in an automatic process, when reaching or is near to reach the end. My question is: How is that written in iPhone applications. But the main question is: Is that possible to make for Firefox users with Javascript, Ajax or possibly any other language? Been looking a little bit in documentation but havent found anything useful, maybe I just havent looked enough edit: Found it for Android - http://stackoverflow.com/questions/1917773/dynamic-listview-in-android-app Still looking for same futures for a Windows browser tho out

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  • Two tables side by side in one column LaTeX environment

    - by Gacek
    The question is similar to this one: http://stackoverflow.com/questions/1491717/how-to-display-a-content-in-two-column-layout-in-latex but about placing two tables side by side. I have two small tables looking like that: \begin{table}[t] \begin{tabular}{|c|l||r|r||r|r|} %content goes here \end{tabular} \caption{some caption} \end{table} \begin{table}[t] \begin{tabular}{|c|l||r|r||r|r|} %content goes here \end{tabular} \caption{some caption for second table} \end{table} I have one-column document and these tables are really narrow, so I would like to display them side by side (with separate captions) insted of one under another with a lot of unused, white space. I tried to do it with this \multicols but it seems that floats (tables here) cannot be placed inside of it. Any ideas?

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  • XHTML editor wanted!

    - by stolsvik
    I need an editor that outputs clean HTML, and preferably strict XHTML with CSS, as I am going to display the resulting pages as help pages in a java application using xhmtlrenderer ("Flying Saucer") which apparently very much prefers XHTML with CSS 2.1. Having searched stackoverflow for HTML editor and XHTML editor, I've found several mentioned. Aptana is one, Eclipse's Web Tools is another, and KompoZer is a third. I am going to try these out. With this question, I ask whether there are other good options that would satisfy my requirements, and if there are any one of these mentioned or new ones that you'd recommend in particular, that I should focus a bit extra on?

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  • How to model dependency injection in UML ?

    - by hjo1620
    I have a Contract class. The contract is valid 1 Jan 2010 - 31 Dec 2010. It can be in state Active or Passive, depending on which date I ask the instance for it's state. ex. if I ask 4 July 2010, it's in state Active, but if I ask 1 Jan 2011, it's in state Passive. Instances are created using constructor dependency injection, i.e. they are either Active or Passive already when created, null is not allowed as a parameter for the internal state member. One initial/created vertex is drawn in UML. I have two arrows, leading out from the initial vertex, one leading to state Active and the other to state Passive. Is this a correct representation of dependency injection in UML ? This is related to http://stackoverflow.com/questions/2779922/how-model-statemachine-when-state-is-dependent-on-a-function which initiated the question on how to model DI in general, in UML.

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  • Rails - how do you create a user index page like stack overflows with multiple tabs whilst keeping t

    - by adam
    On stackoverflow in the users profile area there are many tabs which all display differing information such as questions asked and graphs. Its the same view though and im wondering hows its best to achieve this in rails whilst keeping the controller skinny and logic in the view to a minimum. def index @user = current_user case params[:tab_selected] when "questions" @data = @user.questions when "answers" @sentences = @user.answers else @sentences = @user.questions end respond_to do |format| format.html # index.html.erb nd end but how do i process this in the index view without a load of if and else statments. And if questions and answers are presented differently whats the best way to go about this.

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  • c# RichTextBox Tab size

    - by Bala R
    Hello, I'm using System.Windows.Forms.RichTextBox and by default the tab size is 8 spaces. The RichTextBox itself is not that big and 8 spaces leads to a lot of scrolling. Is there any way to make it 4 spaces. If it matters, the control is initially blank and the user starts entering stuff and the tabs have to shorter (4 spaces) as the user enters text with tabs. I tried http://stackoverflow.com/questions/154204/modifying-default-tab-size-in-richtextbox and a few variations of it but no luck.

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  • Transforming url with URI-module

    - by sid_com
    Do I gain something when I transform my $url like this: $url = URI-new( $url )? #!/usr/bin/env perl use warnings; use strict; use 5.012; use URI; use XML::LibXML; my $url = 'http://stackoverflow.com/'; $url = URI->new( $url ); my $doc = XML::LibXML->load_html( location => $url, recover => 2 ); my @nodes = $doc->getElementsByTagName( 'a' ); say scalar @nodes;

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  • JSP 2.0 SEO friendly links encoding

    - by victor hugo
    Currently I have something like this in my JSP <c:url value="/teams/${contact.id}/${contact.name}" /> The important part of my URL is the ID, I just put the name on it for SEO purposes (just like stackoverflow.com does). I was just wondering if there is a quick and clean way to encode the name (change spaces per +, latin chars removal, etc). I'd like it to be like this: <c:url value="/teams/${contact.id}/${supercool(contact.name)}" /> Is there a function like that out there or should I make my own?

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