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  • about Select algorithm

    - by matin1234
    Hi I have read about the select algorithm and I have a question maybe it looks silly!!! but why we consider the array as groups of 5 elements ?? can we consider it with 7 or 3 elements??thanks

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  • Strange php problem

    - by M28
    The following code: print_r($_GET); echo '<br />'; echo isset($_GET['logout'])?'yes':'no'; prints: Array ( [logoout] => ) no Why is it printing "no" instend of "yes"?

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  • How to halt only if shift is pressed?

    - by Joe
    Hi, in Pharo I'd like Object>>halt to halt only if shift is pressed, so that I don't break down my image. How do I do that? So, for example, I'd like to be able to add a self halt. into Array>>add:, without losing my image.

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  • Connection error with heroku db:push with postgresql

    - by Toby Hede
    I have suddenly started seeing this strange error when trying to push my database to heroku. > heroku db:push Auto-detected local database: postgres://infinity:infinity@localhost/infinity_development?encoding=utf8 Failed to connect to database: Sequel::DatabaseConnectionError -> TypeError wrong argument type String (expected Array) My app works fine - the credentials are all set locally.

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  • Assembly language 8086

    - by rkrahu
    I v porblem in assembly 8086, I can't use 2D array when I m using like this mov ar[cx][dx] then arising error and when I want to us SI and DI both in arrary then also find error. I need answer quickly thanks for your help

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  • Why doesn't XmlSerializer support Dictionary?

    - by theburningmonk
    Just curious as to why Dictionary is not supported by XmlSerializer? You can get around it easily enough by using DataContractSerializer and writing the object to a XmlTextWriter, but what are the characteristics of a Dictionary that makes it difficult for a XmlSerializer to deal with considering it's really an array of KeyValuePairs. In fact, you can pass an IDictionary<TKey, TItem> to a method expecting an IEnumerable<KeyValuePairs<TKey, ITem>>.

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  • How to format and add new numbers dynamically to hidden field?

    - by Bartek
    I get from server into client side only pure number IDs, how to add dynamically it to html hidden field so that looks like array or JSON format (I mean: ["32","33","34"]), so that in next step I can receive on serwer and parse? Hidden field contains on start only blank brackets []. My current code override hidden field from [] to e.g. "32": $("#myHiddenField").val(JSON.stringify(data.result[0].newid));

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  • extjs data store load data on fly

    - by CKeven
    I'm trying to create a data store that will load the data schema and records on fly. Here is the current code i have and I'm not sure how to setup the array reader properly since i don't have the schema before query returns. ds = new Ext.data.Store({ url: 'http://10.10.97.83/cgi-bin/cgiip.exe/WService=wsdev/majax/jsbrdgx.p', baseParams: { cr: Ext.util.JSON.encode(omgtobxParms) }, reader: new Ext.data.ArrayReader({ //root:data.value.records }, col_names) }); {"name": "tmp_buy_book", "schema": [ { "name": "a", "type": "C"}, { "name": "b", "type": "C"} "records": [["1", ""], ["1",""]]}

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  • C# datastructure

    - by Bi
    Hi Whats the best data structure for a 2D array of size unknown x 2. Which means one dimension is dynamic (list of grocery items) and the other is fixed (price and quantity). Thanks

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  • How do you display a binary search tree?

    - by fakeit
    I'm being asked to display a binary search tree in sorted order. The nodes of the tree contain strings. I'm not exactly sure what the best way is to attack this problem. Should I be traversing the tree and displaying as I go? Should I flatten the tree into an array and then use a sorting algorithm before I display? I'm not looking for the actual code, just a guide where to go next.

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  • How do I destruct data associated with an object after the object no longer exists?

    - by Phineas
    I'm creating a class (say, C) that associates data (say, D) with an object (say, O). When O is destructed, O will notify C that it soon will no longer exist :( ... Later, when C feels it is the right time, C will let go of what belonged to O, namely D. If D can be any type of object, what's the best way for C to be able to execute "delete D;"? And what if D is an array of objects? My solution is to have D derive from a base class that C has knowledge of. When the time comes, C calls delete on a pointer to the base class. I've also considered storing void pointers and calling delete, but I found out that's undefined behavior and doesn't call D's destructor. I considered that templates could be a novel solution, but I couldn't work that idea out. Here's what I have so far for C, minus some details: // This class is C in the above description. There may be many instances of C. class Context { public: // D will inherit from this class class Data { public: virtual ~Data() {} }; Context(); ~Context(); // Associates an owner (O) with its data (D) void add(const void* owner, Data* data); // O calls this when he knows its the end (O's destructor). // All instances of C are now aware that O is gone and its time to get rid // of all associated instances of D. static void purge (const void* owner); // This is called periodically in the application. It checks whether // O has called purge, and calls "delete D;" void refresh(); // Side note: sometimes O needs access to D Data *get (const void *owner); private: // Used for mapping owners (O) to data (D) std::map _data; }; // Here's an example of O class Mesh { public: ~Mesh() { Context::purge(this); } void init(Context& c) const { Data* data = new Data; // GL initialization here c.add(this, new Data); } void render(Context& c) const { Data* data = c.get(this); } private: // And here's an example of D struct Data : public Context::Data { ~Data() { glDeleteBuffers(1, &vbo); glDeleteTextures(1, &texture); } GLint vbo; GLint texture; }; }; P.S. If you're familiar with computer graphics and VR, I'm creating a class that separates an object's per-context data (e.g. OpenGL VBO IDs) from its per-application data (e.g. an array of vertices) and frees the per-context data at the appropriate time (when the matching rendering context is current).

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  • How does 'binding' in JSF work?

    - by Roman
    I've created custom component which shows chart. Now I need to make binding support for this component i.e. generated chart-image should be available (as array of bytes) to backing bean via binding mechanism. I'd like to know some general info about binding implementation techniques. Any links and examples are welcome as well. Thanks in advance!

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  • How do i pass arraycollection to Advancedatagrid using HierarchicalData ?

    - by R.Vijayakumar
    Problem with passing arraycollection to Advance datagrid. My Arraycollection structure like `   private var groupList:ArrayCollection = new ArrayCollection([ {Country:'India', children:[ {Country:'Series1', children:[                                {Matches:'India Test series 1',isEnable:false,id:1,isSelected:true},                                {Matches:'India Test series 2',isEnable:false,id:2,isSelected:true},                                {Matches:'India Test series 3',isEnable:false,id:3,isSelected:true}]},              {Country:'Series2', children:[                                {Matches:'Australia Test series 1',isEnable:false,id:25,isSelected:true},                                {Matches:'Australia Test series 2',isEnable:false,id:26,isSelected:true},                                {Matches:'Australia Test series 3',isEnable:false,id:27,isSelected:true}]} ]}, {Country:'Austrila', children:[ {Country:'Series1', children:[                                {Matches:'Australia Test series 1',isEnable:false,id:46,isSelected:true},                                {Matches:'Australia Test series 2',isEnable:false,id:47,isSelected:true},                                {Matches:'Australia Test series 3',isEnable:false,id:48,isSelected:true}]}, {Country:'Series2', children:[                                {Matches:'Australia Test series 1',isEnable:false,id:49,isSelected:true},                                {Matches:'Australia Test series 2',isEnable:false,id:50,isSelected:true},                                {Matches:'Australia Test series 3',isEnable:false,id:51,isSelected:true}]}, {Country:'Series3', children:[                                {Matches:'Australia Test series 1',isEnable:false,id:52,isSelected:true},                                {Matches:'Australia Test series 2',isEnable:false,id:53,isSelected:true},                                {Matches:'Australia Test series 3',isEnable:false,id:54,isSelected:true}]} ]} passing AD in dataProvider="{new HierarchicalData(groupList)}" It's working fine. it's show two menu of tree and childrens based on country .But i tried dynamic xml convert to Arraycollection by below code private function convertXmlToArrayCollection( file:String ):ArrayCollection { var xml:XMLDocument = new XMLDocument( file ); //var decoder:SimpleXMLDecoder = new SimpleXMLDecoder(); var decoder1:SimpleXMLDecoder = new SimpleXMLDecoder(true); var data1:Object = decoder1.decodeXML( xml ); var array1:Array = ArrayUtil.toArray(data1); return new ArrayCollection( array1 ); } my xml structure is <Country Country="India "> <Country Country="Series "> <Matches Matches="BIndependiente-Colon" id="701536" isEnable="false" isSelected="true" startDate="2009-10-29 01:30:00" EndDate="2009-10-29 01:30:00"/> <Matches Matches="Boca Juniors-Chacarita Juniors" id="701633" isEnable="false" isSelected="true" startDate="2009-10-29 19:00:00" EndDate=""/> </Country> </Country> <Country Country="Australia"> <Country Country="series"> <Matches Matches="BIndependiente-Colon" id="701536" isEnable="false" isSelected="true" startDate="2009-10-29 01:30:00" EndDate="2009-10-29 01:30:00"/> <Matches Matches="Boca Juniors-Chacarita Juniors" id="701633" isEnable="false" isSelected="true" startDate="2009-10-29 19:00:00" EndDate=""/> </Country> </Country> So if i tried to convert this format of xml code to arryacollection , it converted the array collection but when will i pass to Advance data grid it not show any result . What did i wrong ? groupList1= convertXmlToArrayCollection(string1); Alert.show(groupList1[0].Country[0].Matches[0].id.toString());// output is =701536 Where did i mistake it ? Plz kindly any one refer me , What will i changed ?

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  • Regex for multi-line HTML comments (preg_match_all)

    - by Ben
    I have an html document with multiple commented-out PHP arrays, e.g.: <!-- Array ( [key] => 0 ) --> Using PHP, I need to somehow parse the HTML for only these comments (there are other comments that will need to be ignored) and extract the contents. I've been trying to use preg_match_all but my regex skills aren't up to much. Could anyone point me in the right direction? Any help is much appreciated!

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  • Try-Catch or Check Length? C# XNA

    - by Shaded
    I was just wondering which would be cheaper, using a try catch block for index out of bounds or checking the length of a multi dimensional array and comparing values? I have a feeling it's the length, since I can store the length in a variable and then just do if's which are relatively cheap. I'm just not sure how expensive try-catch is. Thanks!

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  • java double[][] - display as image

    - by joe_shmoe
    Hi all, just wondering if there is a simple way in java to display the contents of say 16x16 array of doubles [0..1] as a greyscale image (ala matlab)? using an unfamiliar matrix library, so I'd like to check that I'm on the right track. don't really care if it is slow or ugly, or if it requires external library - it's just there for a quick look, so as long as it works, I'm fine.

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  • Injecting the mailer service, got "The service definition 'mailer' does not exist"?

    - by Gremo
    This is the class where the service mailer should be injected: namespace Gremo\SkebbyBundle\Transport; use Swift_Mailer; use Gremo\SkebbyBundle\Message\AbstractSkebbyMessage; class MailerTransport extends AbstractSkebbyTransport { /** * @var \Swift_Mailer */ private $mailer; public function __construct(Swift_Mailer $mailer) { $this->mailer = $mailer; } /** * @param \Gremo\SkebbyBundle\Message\AbstractSkebbyMessage $message * @return void */ public function executeTransport(AbstractSkebbyMessage $message) { /* ... */ } } Service id is gremo_skebby.transport.mailer, placed inside mailer.xml file: <parameters> <parameter key="gremo_skebby.converter.swift_message.class"> Gremo\SkebbyBundle\Converter\SwiftMessageConverter </parameter> <parameter key="gremo_skebby.transport.mailer.class"> Gremo\SkebbyBundle\Transport\MailerTransport </parameter> </parameters> <services> <service id="gremo_skebby.converter.swift_message" class="%gremo_skebby.converter.swift_message.class%" public="false" /> <service id="gremo_skebby.transport.mailer" class="%gremo_skebby.transport.mailer.class%" public="false" parent="gremo_skebby.tranport.abstract_transport"> <argument type="service" id="mailer" /> </service> </services> When i try to inject the gremo_skebby.transport.mailer into another service (an helper) i get: Symfony\Component\DependencyInjection\Exception\InvalidArgumentException : The service definition "mailer" does not exist. That is strange, because command php app/console container:debug shows that the mailer service actually exists: mailer container Swift_Mailer I'm loading mailer.xml file dynamically by the extension: if(in_array($configs['transport'], array('http', 'rest', 'mailer'))) { $loader->load('transport.xml'); $loader->load($configs['transport'] . '.xml'); $container->setAlias('gremo_skebby.transport', 'gremo_skebby.transport.' . $configs['transport']); } $loader->load('skebby.xml'); ... and gremo_skebby.transport service is injected into gremo_skebby.skebby service (skebby.xml): <parameters> <parameter key="gremo_skebby.skebby.class"> Gremo\SkebbyBundle\Skebby </parameter> </parameters> <services> <service id="gremo_skebby.skebby" class="%gremo_skebby.skebby.class%"> <argument type="service" id="gremo_skebby.transport" /> </service> </services> A quick test is giving me the same InvalidArgumentException: public function testSkebbyWithMailerTransport() { $loader = new GremoSkebbyExtension(); $container = new ContainerBuilder(); $config = $this->getEmptyConfiguration(); $loader->load(array($config), $container); $this->assertTrue($container->hasDefinition('gremo_skebby.transport.mailer')); $this->assertTrue($container->hasDefinition('gremo_skebby.skebby')); $this->assertInstanceOf('Gremo\SkebbyBundle\Skebby', $container->get('gremo_skebby.skebby')); }

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  • C# asynchronous beginsend method

    - by Jatin
    I am a newbie in socket programming. I am developing a server client application. And I am using Asynchronous tcp ip socket. But now I am facing a problem. In my client side I am receiving my data by a 2kb byte array by beginReceive method. Its working perfectly if data size below or equals to 2 kb, but problem occurring when data size exceeding 2kb range. Please give me some solution.

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