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  • Error while excuting a simple boost thread program

    - by Eternal Learner
    Hi All, Could you tell mw what is the problem with the below boost::thread program #include<iostream> #include<boost/thread/thread.hpp> boost::mutex mutex; class A { public: A() : a(0) {} void operator()() { boost::mutex::scoped_lock lock(mutex); } private: int a; }; int main() { boost::thread thr1(A()); boost::thread thr2(A()); thr1.join(); thr2.join(); } I get the error message: error: request for member 'join' in 'thr1', which is of non-class type 'boost::thread()(A ()())' BoostThread2.cpp:30: error: request for member 'join' in 'thr2', which is of non-class type 'boost::thread ()(A ()())'

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  • Simple haskell string manage

    - by paurullan
    Theres is a little problem I want to solve with Haskell: let substitute a function that change all of the wildcards in a string for one concrete parameter. The function has de signature of: subs :: String -> String -> String -> String -- example: -- subs 'x' "x^3 + x + sin(x)" "6.2" will generate -- "6.2^3 + 6.2 + sin(6.2)"

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  • [WCF] Simple login

    - by Tr?n Qu?c Bình
    Hi everybody, I have a WCF service like this: [ServiceContract( SessionMode=SessionMode.Required)] public interface IService { [OperationContract(IsInitiating = true, IsTerminating = false)] void login(string id); [OperationContract(IsInitiating = false, IsTerminating = false)] string getdata(); } public class Service : IService { public void login(string hashedid) { if (username != "someusername" || password != "somepassword") { // can not get data } else { // can get data } } public string getdata() { return "these are data"; } } How can I write the method login and create the client application? Thanks you.

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  • Simple ASP.NET MVC views without writing a controller

    - by Jake Stevenson
    We're building a site that will have very minimal code, it's mostly just going to be a bunch of static pages served up. I know over time that will change and we'll want to swap in more dynamic information, so I've decided to go ahead and build a web application using ASP.NET MVC2 and the Spark view engine. There will be a couple of controllers that will have to do actual work (like in the /products area), but most of it will be static. I want my designer to be able to build and modify the site without having to ask me to write a new controller or route every time they decide to add or move a page. So if he wants to add a "http://mysite.com/News" page he can just create a "News" folder under Views and put an index.spark page within it. Then later if he decides he wants a /News/Community page, he can drop a community.spark file within that folder and have it work. I'm able to have a view without a specific action by making my controllers override HandleUnknownAction, but I still have to create a controller for each of these folders. It seems silly to have to add an empty controller and recompile every time they decide to add an area to the site. Is there any way to make this easier, so I only have to write a controller and recompile if there's actual logic to be done? Some sort of "master" controller that will handle any requests where there was no specific controller defined?

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  • Old desktop programmer wants to create S+S project

    - by Craig
    I have an idea for a product that I want to be web-based. But because I live in Brasil, the internet is not always available so there needs to be a desktop component that is available for when the internet is down. Also, I have been a SQL programmer, a desktop application programmer using dBase, VB and Pascal, and I have created simple websites using HTML and website creation tools, such as Frontpage. So from my research, I think I have the following options; PHP, Ruby on Rails, Python or .NET for the programming side. MySQL for the DB. And Apache, or possibly IIS, for the webserver. I will probably start with a local ISP provider for the cloud servce. But then maybe move to something more "robust" and universal in the future, ie. Amazon, or Azure, or something along that line. My question then is this. What would you recommend for something like this? I'm sure that I have not listed all of the possibilities, but the ones I have researched and thought of. Thanks everyone, Craig

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  • SimpleXML SOAP response Namespace issues

    - by Stu
    Hi. After spending SEVERAL frustrated hours on this I am asking for your help. I am trying to get the content of particular nodes from a SOAP response. The response is $XmlStr = <?xml version="1.0" encoding="UTF-8"?><env:Envelope xmlns:env="http://www.w3.org/2003/05/soap-envelope"<xmlns:ns1="http://soap.xxxxxx.co.uk/"><env:Body><ns1:PlaceOrderResponse><xxxxxOrderNumber></xxxxxOrderNumber><ErrorArray><Error><ErrorCode>24</ErrorCode><ErrorText>The+client+order+number+3002254+is+already+in+use</ErrorText></Error><Error><ErrorCode>1</ErrorCode><ErrorText>Aborting</ErrorText></Error></ErrorArray></ns1:PlaceOrderResponse></env:Body></env:Envelope> I am trying to get at the nodes and children of <ErrorArray. Because of the XML containing namespaces $XmlArray = new SimpleXMLElement($XmlStr); foreach ($XmlArray->env:Envelope->env:Body->ns1:PlaceOrderResponse->ErrorArray->Error as $Error) { echo $Error->ErrorCode."<br />";<br /> } doesn't work. I have read a number of articles such as http://www.sitepoint.com/blogs/2005/10/20/simplexml-and-namespaces/ htp://blog.stuartherbert.com/php/2007/01/07/using-simplexml-to-parse-rss-feeds/ and about 20 questions on this site which unfortunately are not helping. (the second link has htp:// as a newbie here I cannot post more than one link) Even writing, $XmlArray = new SimpleXMLElement($XmlStr); echo "<br /><br /><pre>\n"; print_r($XmlArray); echo "<pre><br /><br />\n"; gives SimpleXMLElement Object ( ) which makes me wonder if the soap response ($XmlStr) is actually a valid input for SimpleXMLElement. It seems that the line $XmlArray = new SimpleXMLElement($XmlStr); is not doing what I expect it to. Any help on how to get the nodes from the XML above would be very welcome. Obviously getting it to work (having a working example) is what I need in the short term, but if someone could help me understand what I am doing wrong would be better in the long term. Cheers. Stu

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  • Need a code snippet for backward paging...

    - by Ali
    Hi guys I'm in a bit on a fix here. I know how easy it is to build simple pagination links for dynamic pages whereby you can navigate between partial sets of records from sql queries. However the situation I have is as below: COnsider that I wish to paginate between records listed in a flat file - I have no problem with the retrieval and even the pagination assuming that the flat file is a csv file with the first field as an id and new reocrds on new lines. However I need to make a pagination system which paginates backwards i.e I want the LAST entry in the file to appear as the first as so forth. Since I don't have the power of sql to help me here I'm kinda stuck - all I have is a fixed sequence which needs to be paginated, also note that the id mentioned as first field is not necessarily numeric so forget about sorting by numerics here. I basically need a way to loop through the file but backwards and paginate it as such. How can I do that - I'm working in php - I just need the code to loop through and paginate i.e how to tell which is the offset and which is the current page etc.

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  • How can I add a plugin to the registry while using a Zend_Form?

    - by Mallika Iyer
    I have a zend form that I'm initializing as follows: $form = new Form_XYZ(); I have a display group in that form, which I'm calling like this: $form->addDisplayGroup($generalSettingsGroup, 'general', array( 'legend' => 'General', 'disableDefaultDecorators' => true, 'decorators' => array( 'FormElements', 'FieldSet', array('HtmlTag', array('tag' => 'div', 'class' => 'general') ) ) ) ); I get this error : ArrayObject Object ( [exception] => Zend_Loader_PluginLoader_Exception Object ( [message:protected] => Plugin by name 'FieldSet' was not found in the registry; used paths:Zend_Form_Decorator_: Zend/Form/Decorator/ [string:private] => [code:protected] => 0 [file:protected] => /usr/share/pear/PEAR/Zend/Loader/PluginLoader.php [line:protected] => 406 [trace:private] => Array ................... How can I add the FieldSet plugin to the registry? I'm using the default Zend_Form Fieldset decorator.

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  • Simple typemap example in swig java

    - by celil
    I am trying to wrap a native C++ library using swig, and I am stuck at trying to convert time_t in C, to long in Java. I have successfully used swig with python, but so far I am unable to get the above typemap to work in Java. In python it looks like this %typemap(in) time_t { if (PyLong_Check($input)) $1 = (time_t) PyLong_AsLong($input); else if (PyInt_Check($input)) $1 = (time_t) PyInt_AsLong($input); else if (PyFloat_Check($input)) $1 = (time_t) PyFloat_AsDouble($input); else { PyErr_SetString(PyExc_TypeError,"Expected a large number"); return NULL; } } %typemap(out) time_t { $result = PyLong_FromLong((long)$1); } I guess the in map from Java to C would be: %typemap(in) time_t { $1 = (time_t) $input; } How would I complete the out map from C to Java? %typemap(out) time_t ??? Would I need typemaps like the ones below? %typemap(jni) %typemap(jtype) %typemap(jstype) I need this in order to wrap C functions like this: time_t manipulate_time (time_t dt);

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  • A simple factory_girl question

    - by gmile
    I have two factories (post_factory.rb, comment_factory.rb) in separate files. I'd like to create a bit complex factory, which will create a post with associated comments for me. I created a third file, called complex_factory.rb, and wrote the following code: Factory.define :post_with_comments, :parent => :post do |post| post.after_create { |p| Factory(:user_last_state, :post => p) } end But rake spec raises an error, stating that the file is unaware of post and comment factories. At the very next moment, I naïvely wrote requires at the top: require "post_factory.rb" require "comment_factory.rb" But that didn't gave any proper result. Maybe this requires actually looking the wrong direction? Or they pretty much don't matter (as registering factories for visibility might be more complex that I assume). Am I missing something? Any ideas?

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  • Understanding an interesting array update/replace function

    - by dave
    I'm a PHP amateur. This array function is an adaption of a function I noticed while reading this article. I thought this was an interesting type of array function, but I have a question about the way it works. my_func( array( 'sky' => 'blue' ) ); function my_func( array $settings = array() ) { $settings = $settings + array( 'grass'=>'green','sky'=>'dark' ); print_r( $settings ) ; // outputs: Array ( [sky] => blue [grass] => green ) } but..................... my_func( array( 'sky' => 'blue' ) ); function my_func( array $settings = array() ) { $settings = array( 'clock'=>'time' ) ; $settings = $settings + array( 'grass'=>'green','sky'=>'dark' ); print_r( $settings ) ; // outputs: Array ( [clock] => time [grass] => green [sky] => dark ) } Why does [sky] not equal 'blue' in the second instance? Thanks.

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  • Explaining persistent data structures in simple terms

    - by Jason Baker
    I'm working on a library for Python that implements some persistent data structures (mainly as a learning exercise). However, I'm beginning to learn that explaining persistent data structures to people unfamiliar with them can be difficult. Can someone help me think of an easy (or at least the least complicated) way to describe persistent data structures to them? I've had a couple of people tell me that the documentation that I have is somewhat confusing. (And before anyone asks, no I don't mean persistent data structures as in persisted to the file system. Google persistent data structures if you're unclear on this.)

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  • How do you implement a good profanity filter?

    - by Ben Throop
    Many of us need to deal with user input, search queries, and situations where the input text can potentially contain profanity or undesirable language. Oftentimes this needs to be filtered out. Where can one find a good list of swear words in various languages and dialects? Are there APIs available to sources that contain good lists? Or maybe an API that simply says "yes this is clean" or "no this is dirty" with some parameters? What are some good methods for catching folks trying to trick the system, like a$$, azz, or a55? Bonus points if you offer solutions for PHP. :) Edit: Response to answers that say simply avoid the programmatic issue: I think there is a place for this kind of filter when, for instance, a user can use public image search to find pictures that get added to a sensitive community pool. If they can search for "penis", then they will likely get many pictures of, yep. If we don't want pictures of that, then preventing the word as a search term is a good gatekeeper, though admittedly not a foolproof method. Getting the list of words in the first place is the real question. So I'm really referring to a way to figure out of a single token is dirty or not and then simply disallow it. I'd not bother preventing a sentiment like the totally hilarious "long necked giraffe" reference. Nothing you can do there. :)

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  • ASP.NET MVC vs. WebForms - a simple question

    - by Tony
    Hi, I'm wondering about one thing - as we know, the MVC pattern is stateless (it doesn't use the ViewState, so we use only HTML controls), but if we use them in WebForms as well, it'll become stateless too ? so, by doing this, we are getting closer to the MVC pattern ?

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  • mcrypt decoding errors

    - by Kyle Hudson
    Hi, I have a few issues with the following php functions (part of a bigger class). //encode public function acc_pw_enc($text, $key) { $text_num = str_split($text, 8); $text_num = 8 - strlen($text_num[count($text_num)-1]); for ($i=0; $i < $text_num; $i++) { $text = $text . chr($text_num); } $cipher = mcrypt_module_open(MCRYPT_TRIPLEDES, '', 'cbc', ''); mcrypt_generic_init($cipher, $key, 'fYfhHeDm'); $decrypted = mcrypt_generic($cipher, $text); mcrypt_generic_deinit($cipher); return base64_encode($decrypted); } //decode public function acc_pw_dec($encrypted_text, $key) { $cipher = mcrypt_module_open(MCRYPT_TRIPLEDES, '', 'cbc', ''); mcrypt_generic_init($cipher, $key, 'fYfhHeDm'); $decrypted = mdecrypt_generic($cipher, base64_decode($encrypted_text)); mcrypt_generic_deinit($cipher); $last_char = substr($decrypted, -1); for($i=0; $i < 8-1; $i++) { if(chr($i) == $last_char) { $decrypted = substr($decrypted, 0, strlen($decrypted)-$i); break; } } return rtrim($decrypted); //str_replace("?", "", $decrypted); } So for exampe if i encrypt the string 'liloMIA01' with the salt/key 'yBevuZoMy' i will get '7A30ZkEjYbDcAXLgGE/6nQ=='. I get liloMIA01 as the decrypted value, i tried using rtrim but it didn't work.

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  • How to gray out HTML form inputs?

    - by typoknig
    What is the best way to gray out text inputs on an HTML form? I need the inputs to be grayed out when a user checks a check box. Do I have to use JavaScript for this (not very familiar with JScript) or can I use PHP (which I am more familiar with)? EDIT: After some reading I have got a little bit of code, but it is giving me problems. For some reason I cannot get my script to work based on the state of the form input (enabled or disabled) or the state of my checkbox (checked or unchecked), but my script works fine when I base it on the values of the form inputs. I have written my code exactly like several examples online (mainly this one) but to no avail. None of the stuff that is commented out will work. What am I doing wrong here? <label>Mailing address same as residental address</label> <input name="checkbox" onclick="disable_enable() "type="checkbox" style="width:15px"/><br/><br/> <script type="text/javascript"> function disable_enable(){ if (document.form.mail_street_address.value==1) document.form.mail_street_address.value=0; //document.form.mail_street_address.disabled=true; //document.form.mail_city.disabled=true; //document.form.mail_state.disabled=true; //document.form.mail_zip.disabled=true; else document.form.mail_street_address.value=1; //document.form.mail_street.disabled=false; //document.form.mail_city.disabled=false; //document.form.mail_state.disabled=false; //document.form.mail_zip.disabled=false; } </script>

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  • Starting with versioning mysql schemata without overkill. Good solutions?

    - by tharkun
    I've arrived at the point where I realise that I must start versioning my database schemata and changes. I consequently read the existing posts on SO about that topic but I'm not sure how to proceed. I'm basically a one man company and not long ago I didn't even use version control for my code. I'm on a windows environment, using Aptana (IDE) and SVN (with Tortoise). I work on PHP/mysql projects. What's a efficient and sufficient (no overkill) way to version my database schemata? I do have a freelancer or two in some projects but I don't expect a lot of branching and merging going on. So basically I would like to keep track of concurrent schemata to my code revisions. [edit] Momentary solution: for the moment I decided I will just make a schema dump plus one with the necessary initial data whenever I'm going to commit a tag (stable version). That seems to be just enough for me at the current stage.[/edit] [edit2]plus I'm now also using a third file called increments.sql where I put all the changes with dates, etc. to make it easy to trace the change history in one file. from time to time I integrate the changes into the two other files and empty the increments.sql[/edit]

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  • Simple reduction (NP completeness)

    - by Allen
    hey guys I'm looking for a means to prove that the bicriteria shortest path problem is np complete. That is, given a graph with lengths and weights, I need to know if a there exists a path in the graph from s to t with total length <= L and weight <= W. I know that i must take an NP complete problem and reduce it to this one. We have at our disposal the following problems to choose from: 3-SAT, independent set, vertex cover, hamiltonian cycle, and 3-dimensional matching. Any ideas on which may be viable? thanks

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  • Android simple question

    - by Josemalive
    Hi, I have an android application that shows a grid view that shows: 1 2 3 4 GridView gridview=(GridView)findViewById(R.id.GridView_test); DataBaseHelper dbhelper=new DataBaseHelper(this); ArrayList<String> test=new ArrayList<String>(5); backlinksadapter.add("1"); backlinksadapter.add("2"); backlinksadapter.add("3"); backlinksadapter.add("4"); ArrayAdapter mAdapter=new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, test); gridview.setAdapter(mAdapter); By the moment is working, but i would like to show foreach line of the grid, 2 columns with the values of a 2 dimensional array (something like the GridView in ASP.Net - as datasource -). I would like to show: 1 | Person 1 2 | Person 2 3 | Person 3 4 | Person 4 Any idea? Thanks in advance. Jose.

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  • Simple Java Applet not loading in FireFox / Safari on MacOS

    - by Sleepless
    Hello all, I'm probably missing something very basic here. I'm trying to get my first applet to run inside a local HTML page in Firefox 3.6 on Mac OS 10.5.8. Here's the applet's code: package SimpleApplet; import java.applet.Applet; import java.awt.*; public class MyApplet extends Applet { private static final long serialVersionUID = 1L; public void init() { } public void stop() { } public void paint(Graphics g) { g.drawString("Tweedle-Dee!",20,40); } } Here's the HTML page: <html> <body> Here's the applet: <br/> <applet code="MyApplet.class" width="300" height="150"> </applet> </body> </html> Both files (.class and .html) are in the same folder on my local machine. Now when I load the .html file into Firefox, a rectangle with a red X gets displayed. The applet works when started from Eclipse (using JRE 1.5 BTW). Also, it's not a general problem with my browser, as several pages with applets (e.g. http://java.sun.com/applets/jdk/1.4/demo/applets/Blink/example1.html) work. This is also difficult to troubleshoot because there is no output at all on the Java console... Any suggestions are appreciated!

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  • Counting multiple entries in a MySQL database?

    - by Aaron
    Hi all, I'm trying to count multiple entries in a MySQL database, I know how to use COUNT(), but the exact syntax I want to get the results I need eludes me. The problem: Table structure: ID, CODE, AUTHOR, COUNTRY, TIMESTAMP. Code, Author and Country overlap many times in the table. I am trying to discover if there is one simple query that can be ran to return (using WHERE clause on COUNTRY) the author field, the code field, and then a final field that counts the number of times the CODE was present in the query result. So, theoretically I could end up with an array like: array('author', 'code', 'codeAppearsNTimes'); Authors also have varying codes associated with them, so I don't want the results merged. I suppose the end result would be: 'This author is associated with this code this many times'. Is this possible with MySQL? Thanks in advance.

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  • How To create a Simple NDK Program in Android NDK

    - by Rakesh
    Hi I am new to android Programming and NDK.Yet i am not clear with working in NDK.I just downloaded android ndk r4.If i want to develop appln using NDK,and i refered http://marakana.com/forums/android/android_examples/49.html for reference,But still not clear how to create the header file and implementation,I did nt have any previuos exp in c language.And they asked for run javah tool to create the JNI header file. I dont know how to use javah tool,but i found it in java bin directory and i tried using cmd javah -jni com.pathname.classname is this correct syntax? if so i tried doing it in android bin directory.I want to know ,what classname represents,is this name of header file class that i try to create Regards Rakesh Shankar.P

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  • Getting mysql row that doesn't conflict with another row

    - by user939951
    I have two tables that link together through an id one is "submit_moderate" and one is "submit_post" The "submit_moderate" table looks like this id moderated_by post 1 James 60 2 Alice 32 3 Tim 18 4 Michael 60 Im using a simple query to get data from the "submit_post" table according to the "submit_moderate" table. $get_posts = mysql_query("SELECT * FROM submit_moderate WHERE moderated_by!='$user'"); $user is the person who is signed in. Now my problem is when I run this query, with the user 'Michael' it will retrieve this 1 James 60 2 Alice 32 3 Tim 18 Now technically this is correct however I don't want to retrieve the first row because 60 is associated with Michael as well as James. Basically I don't want to retrieve that value '60'. I know why this is happening however I can't figure out how to do this. I appreciate any hints or advice I can get.

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  • How to prevent multiple registrations?

    - by GG.
    I develop a political survey website where anyone can vote once. Obviously I have to prevent multiple registrations for the survey remains relevant. Already I force every user to login with their Google, Facebook or Twitter account. But they can authenticate 3 times if they have an account on each, or authenticate with multiple accounts of the same platform (I have 3 accounts on Google). So I thought also store the IP address, but they can still go through a proxy... I thought also keep the HTTP User Agent with PHP's get_browser(), although they can still change browsers. I can extract the OS with a regex, to change OS is less easier than browsers. And there is also geolocation, for example with the Google Map API. So to summarize, several ideas: 1 / SSO Authentication (I keep the email) 2 / IP Address 3 / HTTP User Agent 4 / Geolocation with an API Have you any other ideas that I did not think? How to embed these tests? Execute in what order? Have you already deploy this kind of solution?

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