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  • What's is the point of PImpl pattern while we can use interface for same purpose in C++?

    - by ZijingWu
    I see a lot of source code which using PIMPL idiom in C++. I assume Its purposes are hidden the private data/type/implementation, so it can resolve dependence, and then reduce compile time and header include issue. But interface class in C++ also have this capability, it can also used to hidden data/type and implementation. And to hidden let the caller just see the interface when create object, we can add an factory method in it declaration in interface header. The comparison is: Cost: The interface way cost is lower, because you doesn't even need to repeat the public wrapper function implementation void Bar::doWork() { return m_impl->doWork(); }, you just need to define the signature in the interface. Well understand: The interface technology is more well understand by every C++ developer. Performance: Interface way performance not worse than PIMPL idiom, both an extra memory access. I assume the performance is same. Following is the pseudocode code to illustrate my question: // Forward declaration can help you avoid include BarImpl header, and those included in BarImpl header. class BarImpl; class Bar { public: // public functions void doWork(); private: // You doesn't need to compile Bar.cpp after change the implementation in BarImpl.cpp BarImpl* m_impl; }; The same purpose can be implement using interface: // Bar.h class IBar { public: virtual ~IBar(){} // public functions virtual void doWork() = 0; }; // to only expose the interface instead of class name to caller IBar* createObject(); So what's the point of PIMPL?

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  • Observing MVC, can/should the Model be instantiated in the ViewController? Or where?

    - by user19410
    I'm writing an experimental iPhone app to learn about the MVC paradigm. I instantiate my Model class in the ViewController class. Is this stupid? I'm asking because storing the id of the Model class, and using it works where it's initialized, but referring to it later (in response to an interface action) crashes. Seemingly, the pointer address of my Model class instance changes, but how can that be? The code in question: @interface Soundcheck_Tone_GeneratorViewController : UIViewController { IBOutlet UIPickerView * frequencyWheel; @public Sinewave_Generation * sineGenerator; } @property(nonatomic,retain) Sinewave_Generation * sineGenerator; @end @implementation Soundcheck_Tone_GeneratorViewController @synthesize sineGenerator; - (void)viewDidLoad { [super viewDidLoad]; [self setSineGenerator:[[Sinewave_Generation alloc] initWithFrequency:20.0]]; // using reference -> fine } // pickerView handling is omitted here... - (void)pickerView:(UIPickerView *)thePickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component { [[self sineGenerator] setFrequency:20.0]; // using reference -> crash } @end // the Sinewave_Generation class... only to be thorough. Works fine so far. @interface Sinewave_Generation : NSObject { AudioComponentInstance toneUnit; @public double frequency,theta; } @property double frequency; - (Sinewave_Generation *) initWithFrequency: (int) f; @end @implementation Sinewave_Generation @synthesize frequency; - (Sinewave_Generation *) initWithFrequency: (int) f { self = [super init]; if ( self ) { [self setFrequency: f]; } return self; } @end

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  • Should my game handle collisions in the Player object?

    - by user1264811
    I'm making a 2D platform game. Right now I'm just working on making a very generic Player class. I'm wondering if it would be more efficient/better practice to have an ActionListener within the Player class to detect collisions with Enemy objects (also have an ActionListener) or to handle all the collisions in the main world. Furthermore, I'm thinking ahead about how I will handle collisions with the platforms themselves. I've looked into the double boolean arrays to see which tiles players can go to and which they can't. I don't understand how to use this class and the player class at the same time.

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  • How should dependencies be managed across a modular application?

    - by bear
    Let's say that we have a structure like this: Application -- Modules --Module1 -- Controller -- PublicHelper --Module2 -- Controller -- PublicHelper Whereby a module's Public Helper can provide helper functions. In nearly every module helper, the helper needs to access another module's public helper methods. Let's say for instance, in a PHP application: Module1 provides functionality to create a sale, and as part of the class Module1PublicHelper extends AbstractModuleHelper { public function createSale($customerId, $param, $param) { $userPublicHelper = // grab an instance of the user public helper $currentUser = $userPublicHelper->getCurrentUser(); } } class Module2PublicHelper extends AbstractModuleHelper { public function getCurrentUser() { //do something return $user; } } In this situation, the method needs to obtain an instance, either new or whatever of the user public helper. Given that all of Module Public Helper classes are instantiated with a minimum set of constructor params, e.g. EntityManager, what would be the best way to get a copy of it? Obviously, we can't really inject the user public helper class into the class containing createSale One solution would be to use a service locator or registry, however, testing the application isn't exactly easy.

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  • From concept to reality. Teach me how to CSS style my divs [closed]

    - by unixman83
    I have the html layout of my simple web page below (commented). What css do I add to <div> classes to get the rendering that I want? I want to learn. Give me the CSS file for it please. <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>My Website</title> </head> <body> <div class="outer"> <!--Outer content box 750px wide--> <div class="header"> The heading of the page. </div> <div class="main"> <div class="leftbar"> A sidebar on the left with categories. </div> <div class="content"> The main content of the page. </div> </div> </div> </body> </html>

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  • How to parse many div's using Simple HTML DOM? [closed]

    - by user1892833
    I have this HTML code <div id="first" class="first"> One <div id="second" class="second"> Second <div id="third" class="third"> Third <div id="fourth" class="fourth"> Fourth <div id="fifth" clas="fifth"> Fifht <div id="sixth" class="sixth"> Sixth </div> </div> </div> </div> </div> This code is from an external website. I want to display 'Hi' using Simple HTML DOM from a URL. I'm sick of trying and thinking codes to make this possible. Thank you very much.

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  • ASP.NET MVC File Upload Error - "The input is not a valid Base-64 string"

    - by Justin
    Hey all, I'm trying to add a file upload control to my ASP.NET MVC 2 form but after I select a jpg and click Save, it gives the following error: The input is not a valid Base-64 string as it contains a non-base 64 character, more than two padding characters, or a non-white space character among the padding characters. Here's the view: <% using (Html.BeginForm("Save", "Developers", FormMethod.Post, new {enctype = "multipart/form-data"})) { %> <%: Html.ValidationSummary(true) %> <fieldset> <legend>Fields</legend> <div class="editor-label"> Login Name </div> <div class="editor-field"> <%: Html.TextBoxFor(model => model.LoginName) %> <%: Html.ValidationMessageFor(model => model.LoginName) %> </div> <div class="editor-label"> Password </div> <div class="editor-field"> <%: Html.Password("Password") %> <%: Html.ValidationMessageFor(model => model.Password) %> </div> <div class="editor-label"> First Name </div> <div class="editor-field"> <%: Html.TextBoxFor(model => model.FirstName) %> <%: Html.ValidationMessageFor(model => model.FirstName) %> </div> <div class="editor-label"> Last Name </div> <div class="editor-field"> <%: Html.TextBoxFor(model => model.LastName) %> <%: Html.ValidationMessageFor(model => model.LastName) %> </div> <div class="editor-label"> Photo </div> <div class="editor-field"> <input id="Photo" name="Photo" type="file" /> </div> <p> <%: Html.Hidden("DeveloperID") %> <%: Html.Hidden("CreateDate") %> <input type="submit" value="Save" /> </p> </fieldset> <% } %> And the controller: //POST: /Secure/Developers/Save/ [AcceptVerbs(HttpVerbs.Post)] public ActionResult Save(Developer developer) { //get profile photo. var upload = Request.Files["Photo"]; if (upload.ContentLength > 0) { string savedFileName = Path.Combine( ConfigurationManager.AppSettings["FileUploadDirectory"], "Developer_" + developer.FirstName + "_" + developer.LastName + ".jpg"); upload.SaveAs(savedFileName); } developer.UpdateDate = DateTime.Now; if (developer.DeveloperID == 0) {//inserting new developer. DataContext.DeveloperData.Insert(developer); } else {//attaching existing developer. DataContext.DeveloperData.Attach(developer); } //save changes. DataContext.SaveChanges(); //redirect to developer list. return RedirectToAction("Index"); } Thanks, Justin

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  • Custom RadioButton image not filling space

    - by Galip
    Hi guys, I have a custom radiobutton with a 9-patch image as background. I use a Selector to determine the background. I also have some text i want to put over the background of the image, but the text is aligning next to the button. This is the RadioGroup <LinearLayout android:id="@+id/segmented" android:layout_width="fill_parent" android:layout_height="50sp" android:gravity="center" android:layout_below="@+id/header"> <RadioGroup android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="horizontal" android:id="@+id/group1" android:gravity="center"> <RadioButton android:checked="false" android:layout_width="90sp" android:id="@+id/rbVerzekeringen" android:text="Verzekeringen" android:textSize="10sp" android:button="@drawable/checkbox_theme" /> <RadioButton android:checked="false" android:layout_width="90sp" android:id="@+id/rbPersoonlijk" android:text="Persoonlijk" android:textSize="10sp" android:button="@drawable/checkbox_theme" /> <RadioButton android:checked="false" android:layout_width="90sp" android:id="@+id/rbNotities" android:text="Notities" android:textSize="10sp" android:button="@drawable/checkbox_theme" /> </RadioGroup> </LinearLayout> This is the Selector: <?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:state_checked="true" android:state_window_focused="false" android:drawable="@drawable/bt_filter_active" /> <item android:state_checked="false" android:state_window_focused="false" android:drawable="@drawable/bt_filter" /> <item android:state_checked="true" android:state_pressed="true" android:drawable="@drawable/bt_filter_active" /> <item android:state_checked="false" android:state_pressed="true" android:drawable="@drawable/bt_filter" /> <item android:state_checked="true" android:state_focused="true" android:drawable="@drawable/bt_filter_active" /> <item android:state_checked="false" android:state_focused="true" android:drawable="@drawable/bt_filter" /> <item android:state_checked="false" android:drawable="@drawable/bt_filter" /> <item android:state_checked="true" android:drawable="@drawable/bt_filter_active" /> </selector> And this is what it lookes like: As you can figure out I want 3 large buttons with the text over it. How can I do this? EDIT: I set the selector at background in stead of button and set the button to null. The code looks like this now: <LinearLayout android:id="@+id/segmented" android:layout_width="fill_parent" android:layout_height="50sp" android:gravity="center" android:layout_below="@+id/header"> <RadioGroup android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="horizontal" android:id="@+id/group1" android:gravity="center"> <RadioButton android:checked="false" android:layout_width="100sp" android:layout_height="40sp" android:id="@+id/rbVerzekeringen" android:text="Verzekeringen" android:textSize="13sp" android:orientation="vertical" android:background="@drawable/checkbox_theme" android:button="@null" android:gravity="center"/> <RadioButton android:checked="false" android:layout_width="100sp" android:layout_height="35sp" android:id="@+id/rbPersoonlijk" android:text="Persoonlijk" android:textSize="35sp" android:background="@drawable/checkbox_theme" android:button="@null" android:gravity="center"/> <RadioButton android:checked="false" android:layout_width="100sp" android:layout_height="30sp" android:id="@+id/rbNotities" android:text="Notities" android:textSize="13sp" android:background="@drawable/checkbox_theme" android:button="@null" android:gravity="center"/> </RadioGroup> </LinearLayout> But now when I make the buttons larger or smaller the text in it just disappears like this (height of the first image is 40sp, the second is 35sp and the last one is 30sp): How can I make the background image smaller without cutting the text in it?

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  • Simple Observation in Django: How Can I Correctly Modify The `attrs` sent to __new__ of a Django Mod

    - by DGGenuine
    Hello, I'm a strong proponent of the observer pattern, and this is what I'd like to be able to do in my Django models.py: class AModel(Model): __metaclass__ = SomethingMagical @post_save(AnotherModel) @classmethod def observe_another_model_saved(klass, sender, instance, created, **kwargs): pass @pre_init('YetAnotherModel') @classmethod def observe_yet_another_model_initializing(klass, sender, *args, **kwargs): pass @post_delete('DifferentApp.SomeModel') @classmethod def observe_some_model_deleted(klass, sender, **kwargs): pass This would connect a signal with sender = the decorator's argument and receiver = the decorated method. Right now my signal connection code all exists in __init__.py which is okay, but a little unmaintainable. I want this code all in one place, the models.py file. Thanks to helpful feedback from the community I'm very close (I think.) (I'm using a metaclass solution instead of the class decorator solution in the previous question/answer because you can't set attributes on classmethods, which I need.) I am having a strange error I don't understand. At the end of my post are the contents of a models.py that you can pop into a fresh project/application to see the error. Set your database to sqlite and add the application to installed apps. This is the error: Validating models... Unhandled exception in thread started by Traceback (most recent call last): File "/Library/Python/2.6/site-packages//lib/python2.6/site-packages/django/core/management/commands/runserver.py", line 48, in inner_run File "/Library/Python/2.6/site-packages/django/core/management/base.py", line 253, in validate raise CommandError("One or more models did not validate:\n%s" % error_text) django.core.management.base.CommandError: One or more models did not validate: local.myothermodel: 'my_model' has a relation with model MyModel, which has either not been installed or is abstract. I've indicated a few different things you can comment in/out to fix the error. First, if you don't modify the attrs sent to the metaclass's __new__, then the error does not arise. (Note even if you copy the dictionary element by element into a new dictionary, it still fails; only using the exact attrs dictionary works.) Second, if you reference the first model by class rather than by string, the error also doesn't arise regardless of what you do in __new__. I appreciate your help. I'll be githubbing the solution if and when it works. Maybe other people would enjoy a simplified way to use Django signals to observe application happenings. #models.py from django.db import models from django.db.models.base import ModelBase from django.db.models import signals import pdb class UnconnectedMethodWrapper(object): sender = None method = None signal = None def __init__(self, signal, sender, method): self.signal = signal self.sender = sender self.method = method def post_save(sender): return _make_decorator(signals.post_save, sender) def _make_decorator(signal, sender): def decorator(view): return UnconnectedMethodWrapper(signal, sender, view) return decorator class ConnectableModel(ModelBase): """ A meta class for any class that will have static or class methods that need to be connected to signals. """ def __new__(cls, name, bases, attrs): unconnecteds = {} ## NO WORK newattrs = {} for name, attr in attrs.iteritems(): if isinstance(attr, UnconnectedMethodWrapper): unconnecteds[name] = attr newattrs[name] = attr.method #replace the UnconnectedMethodWrapper with the method it wrapped. else: newattrs[name] = attr ## NO WORK # newattrs = {} # for name, attr in attrs.iteritems(): # newattrs[name] = attr ## WORKS # newattrs = attrs new = super(ConnectableModel, cls).__new__(cls, name, bases, newattrs) for name, unconnected in unconnecteds.iteritems(): _connect_signal(unconnected.signal, unconnected.sender, getattr(new, name), new._meta.app_label) return new def _connect_signal(signal, sender, receiver, default_app_label): # full implementation also accepts basestring as sender and will look up model accordingly signal.connect(sender=sender, receiver=receiver) class MyModel(models.Model): __metaclass__ = ConnectableModel @post_save('In my application this string matters') @classmethod def observe_it(klass, sender, instance, created, **kwargs): pass @classmethod def normal_class_method(klass): pass class MyOtherModel(models.Model): ## WORKS # my_model = models.ForeignKey(MyModel) ## NO WORK my_model = models.ForeignKey('MyModel')

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  • adv. styling list with css

    - by Ayrton
    Hi I need to style a regular html list like the following picture: as you see each each list item has a padding on the sides and a top&bottom border. When hovered the border has a width of 100% of the <ul> item. Now the problem actually is: when you give each <li> element a top & bottom border I have a border of 2 px between each element (bottom border from the first element and the top border from the second element), I don't want that however I do not know any solution for this. my html: <div id="tab_top" class="tab"> <div class="bottom"> <div class="cont"> <ul> <li><a href="#">Here’s a Sample Post <span class="ct">32</span></a></li> <li><a href="#">Here’s a Sample Post <span class="ct">32</span></a></li> <li><a href="#">Here’s a Sample Post <span class="ct">32</span></a></li> <li><a href="#">Here’s a Sample Post <span class="ct">32</span></a></li> <li><a href="#">Here’s a Sample Post <span class="ct">32</span></a></li> <li><a href="#">Here’s a Sample Post <span class="ct">32</span></a></li> <li><a href="#">Here’s a Sample Post <span class="ct">32</span></a></li> </ul> </div> </div> </div> my css: #tabs .tab div.cont ul li a{line-height:30px; height:30px; color:#3ca097; display:block; padding-left:11px; padding-right:13px; width:259px;} #tabs .tab div.cont ul li a span.ct{float:right;background:url(images/count_comments.gif) no-repeat left top; height:13px; padding-left:16px; margin-top:10px; line-height:12px;} #tabs .tab div.cont ul li a:hover{color:#fff; background-color:#6fd2c8; border-top:1px solid #7db9b2; border-bottom:1px solid #7db9b2; height:28px; line-height:28px;} #tabs .tab div.cont ul li a:hover span.ct{background-position:left bottom; color:#23665f; margin-top:9px;} I would be pleased if you can help me Yours truthfully

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  • How to map an IDictionary<String, CustomCollectionType> in NHibernate

    - by devonlazarus
    Very close to what I'm trying to do but not quite the answer I think I'm looking for: How to map IDictionary<string, Entity> in Fluent NHibernate I'm trying to implement an IDictionary<String, IList<MyEntity>>and map this collection to the database using NHibernate. I do understand that you cannot map collections of collections directly in NHibernate, but I do need the functionality of accessing an ordered list of elements by key. I've implemented IUserCollectionType for my IList<MyEntity> so that I can use IDictionary<String, MyCustomCollectionType> but am struggling with how to get the map to work as I'd like. Details This is the database I'm trying to model: ------------------------ -------------------- | EntityAttributes | | Entities | ------------------------ ------------------ -------------------- | EntityAttributeId PK | | Attributes | | EntityId PK | <- | EntityId FK | ------------------ | DateCreated | | AttributeId FK | -> | AttributeId PK | -------------------- | AttributeValue | | AttributeName | ------------------------ ------------------ Here are my domain classes: public class Entity { public virtual Int32 Id { get; private set; } public virtual DateTime DateCreated { get; private set; } ... } public class EavEntity : Entity { public virtual IDictionary<String, EavEntityAttributeList> Attributes { get; protected set; } ... } public class EavAttribute : Entity { public virtual String Name { get; set; } ... } public class EavEntityAttribute : Entity { public virtual EavEntity EavEntity { get; private set; } public virtual EavAttribute EavAttribute { get; private set; } public virtual Object AttributeValue { get; set; } ... } public class EavEntityAttributeList : List<EavEntityAttribute> { } I've also implemented the NH-specific custom collection classes IUserCollectionType and PersistentList And here is my mapping so far: <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" ...> <class xmlns="urn:nhibernate-mapping-2.2" name="EavEntity" table="Entities"> <id name="Id" type="System.Int32"> <column name="EntityId" /> <generator class="identity" /> </id> ... <map cascade="all-delete-orphan" collection-type="EavEntityAttributeListType" name="EntityAttributes"> <key> <column name="EntityId" /> </key> <index type="System.String"> <column name="Name" /> </index> <one-to-many class="EavEntityAttributeList" /> </map> </class> </hibernate-mapping> I know the <map> tag is partially correct, but I'm not sure how to get NH to utilize my IUserCollectionType to persist the model to the database. What I'd like to see (and this isn't right, I know) is something like: <map cascade="all-delete-orphan" collection-type="EavEntityAttributeListType" name="EntityAttributes"> <key> <column name="EntityId" /> </key> <index type="System.String"> <column name="Name" /> </index> <list> <index column="DisplayOrder"> <one-to-many class="EntityAttributes"> </list> </map> Does anyone have any suggestions on how to properly map that IDictionary<String, EavEntityAttributeList> collection? I am using Fluent NH so I'll take examples using that library, but I'm hand mappings are just as helpful here.

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  • Jquery calendar and tab sliding div clash...

    - by StealthRT
    Hey all, i am trying my best to figure out another way around this problem i seem to have encountered. On my website i have a jquery calendar and also a jquery div tab slider (this: http://www.queness.com/resources/html/tabmenu/jquery-tabbed-menu-queness.html). The problem comes into play with the DIV tag. The calender loads up inside a DIV with a id of 'calender'. The CSS for the tabs have the DIV hidden: CSS: .boxBody div {display:none;} .boxBody div.show {display:block;} .boxBody #category a {display:block;} And because of that, the calender never shows on the page. However, if i comment out that css code above, it shows up but does not cover each section as it should. In other words, everything is shown when it should be hidden until the tabs are clicked on to revel it. code: <script type="text/javascript"> $(document).ready(function() { $('#tabMenu > li').click(function(){ $('#tabMenu > li').removeClass('selected'); $(this).addClass('selected'); $('.boxBody div').slideUp('1500'); $('.boxBody div:eq(' + $('#tabMenu > li').index(this) + ')').slideDown('1500'); }).mouseover(function() { $(this).addClass('mouseover'); $(this).removeClass('mouseout'); }).mouseout(function() { $(this).addClass('mouseout'); $(this).removeClass('mouseover'); }); $('.boxBody #category li').mouseover(function() { $(this).css('backgroundColor','#888'); $(this).children().animate({paddingLeft:"20px"}, {queue:false, duration:300}); }).mouseout(function() { $(this).css('backgroundColor',''); $(this).children().animate({paddingLeft:"0"}, {queue:false, duration:300}); }); $('.boxBody li').click(function(){ window.location = $(this).find("a").attr("href"); }).mouseover(function() { $(this).css('backgroundColor','#888'); }).mouseout(function() { $(this).css('backgroundColor',''); }); }); </script> <div align="center"> <div class="Mainbox"> <ul id="tabMenu"> <div id="theLogo"><[img] src="img/theLogo.png" width="415" height="146" /></div> <li class="stats"><[img] src="img/Stats.png" width="70" height="52" id="tab1" /></li> <li class="cal"><[img] src="img/cal.png" width="70" height="52" id="tab2" /></li> <li class="loyalty"><[img] src="img/Loyalty.png" width="70" height="52" id="tab3" /></li> <li class="Employees"><[img] src="img/Employees.png" width="70" height="52" id="tab4" /></li> <li class="txtemail"><[img] src="img/TxtEmail.png" width="70" height="52" id="tab5" /></li> </ul> <div class="boxTop"></div> <div class="boxBody"> <div id="stats" class="show"> Just a test here.... </div> <div id="cal"> <div id='calendar'></div> </div> <div class="boxBottom"></div> </div> </div> How can i change the tab javascript code so that it does not have to hide the DIV's so that the calendar will work? I've tried to replace all div's with 'span' or 'p' but that does not seem to work at all. Any help would be great as i am stuck on this and can not go any further without it being solved! :) David

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  • PHP behaves weird, mixing up HTML markup.

    - by adardesign
    Thanks for looking on this problem. I have a page that is totally valid page, and there is a PHP loop that brings in a <li> for each entry of the table. When i check this page locally it looks 100% OK, but when veiwing the page online the left side bar (which creates this markup is broken randomly mixing <div>'s and <li>'s and i have no clue what the problem is. See page (problem is on the left side) php code <?php do { ?> <li class="clear-block" id="<?php echo $row_Recordset1['penSKU']; ?>"> <a title="Click to view the <?php echo $row_Recordset1['penName']; ?> collection" rel="<?php echo $row_Recordset1['penSKU']; ?>"> <img src="prodImages/small/<?php echo $row_Recordset1['penSKU']; ?>.png" alt="" /> <div class="prodInfoCntnr"> <div class="basicInfo"> <span class="prodName"><?php echo $row_Recordset1['penName']; ?></span> <span class="prodSku"><?php echo $row_Recordset1['penSKU']; ?></span> </div> <div class="secondaryInfo"> <span>As low as .<?php echo $row_Recordset1['price25000']; ?>¢ <!--<em>(R)</em>--></span> <div class="colorPlacholder" rel="<?php echo $row_Recordset1['penColors']; ?>"></div> </div> </div> <div class="additPenInfo"> <div class="imprintInfo"><span>Imprint area: </span><?php echo $row_Recordset1['imprintArea']; ?></div> <div class="colorInfo"><span>Available in: </span><?php echo $row_Recordset1['penColors']; ?></div> <table border="0" cellspacing="0" cellpadding="0"> <tr> <th>Amount</th> <th>500</th> <th>1,000</th> <th>2,500</th> <th>5,000</th> <th>10,000</th> <th>20,000</th> </tr> <tr> <td>Price <span>(R)</span></td> <td><?php echo $row_Recordset1['price500'];?>¢</td> <td><?php echo $row_Recordset1['price1000'];?>¢</td> <td><?php echo $row_Recordset1['price2500'];?>¢</td> <td><?php echo $row_Recordset1['price5000'];?>¢</td> <td>Please Contact</td> <td>Please Contact</td> </tr> </table> </div> </a> </li> <?php } while ($row_Recordset1 = mysql_fetch_assoc($Recordset1)); ?>

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  • help needed on deciphering the g++ vtable dumps

    - by Ganesh Kundapur
    Hi, for the fallow class hierarchy class W { public: virtual void f() { cout << "W::f()" << endl; } virtual void g() { cout << "W::g()" << endl; } }; class AW : public virtual W { public: void g() { cout << "AW::g()" << endl; } }; class BW : public virtual W { public: void f() { cout << "BW::f()" << endl; } }; class CW : public AW, public BW { }; g++ -fdump-class-hierarchy is Vtable for W W::_ZTV1W: 4u entries 0 (int ()(...))0 4 (int ()(...))(& _ZTI1W) 8 W::f 12 W::g Class W size=4 align=4 base size=4 base align=4 W (0xb6e3da50) 0 nearly-empty vptr=((& W::_ZTV1W) + 8u) Vtable for AW AW::_ZTV2AW: 7u entries 0 0u 4 0u 8 0u 12 (int ()(...))0 16 (int ()(...))(& _ZTI2AW) 20 W::f 24 AW::g VTT for AW AW::_ZTT2AW: 2u entries 0 ((& AW::_ZTV2AW) + 20u) 4 ((& AW::_ZTV2AW) + 20u) Class AW size=4 align=4 base size=4 base align=4 AW (0xb6dbf6c0) 0 nearly-empty vptridx=0u vptr=((& AW::_ZTV2AW) + 20u) W (0xb6e3da8c) 0 nearly-empty virtual primary-for AW (0xb6dbf6c0) vptridx=4u vbaseoffset=-0x00000000000000014 Vtable for BW BW::_ZTV2BW: 7u entries 0 0u 4 0u 8 0u 12 (int ()(...))0 16 (int ()(...))(& _ZTI2BW) 20 BW::f 24 W::g VTT for BW BW::_ZTT2BW: 2u entries 0 ((& BW::_ZTV2BW) + 20u) 4 ((& BW::_ZTV2BW) + 20u) Class BW size=4 align=4 base size=4 base align=4 BW (0xb6dbf7c0) 0 nearly-empty vptridx=0u vptr=((& BW::_ZTV2BW) + 20u) W (0xb6e3dac8) 0 nearly-empty virtual primary-for BW (0xb6dbf7c0) vptridx=4u vbaseoffset=-0x00000000000000014 Vtable for CW CW::_ZTV2CW: 14u entries 0 0u 4 0u 8 4u 12 (int ()(...))0 16 (int ()(...))(& _ZTI2CW) 20 BW::_ZTv0_n12_N2BW1fEv 24 AW::g 28 4294967292u 32 4294967292u 36 0u 40 (int ()(...))-0x00000000000000004 44 (int ()(...))(& _ZTI2CW) 48 BW::f 52 0u Construction vtable for AW (0xb6dbf8c0 instance) in CW CW::_ZTC2CW0_2AW: 7u entries 0 0u 4 0u 8 0u 12 (int ()(...))0 16 (int ()(...))(& _ZTI2AW) 20 W::f 24 AW::g Construction vtable for BW (0xb6dbf900 instance) in CW CW::_ZTC2CW4_2BW: 13u entries 0 4294967292u 4 4294967292u 8 0u 12 (int ()(...))0 16 (int ()(...))(& _ZTI2BW) 20 BW::f 24 0u 28 0u 32 4u 36 (int ()(...))4 40 (int ()(...))(& _ZTI2BW) 44 BW::_ZTv0_n12_N2BW1fEv 48 W::g VTT for CW CW::_ZTT2CW: 7u entries 0 ((& CW::_ZTV2CW) + 20u) 4 ((& CW::_ZTC2CW0_2AW) + 20u) 8 ((& CW::_ZTC2CW0_2AW) + 20u) 12 ((& CW::_ZTC2CW4_2BW) + 20u) 16 ((& CW::_ZTC2CW4_2BW) + 44u) 20 ((& CW::_ZTV2CW) + 20u) 24 ((& CW::_ZTV2CW) + 48u) Class CW size=8 align=4 base size=8 base align=4 CW (0xb6bea2d0) 0 vptridx=0u vptr=((& CW::_ZTV2CW) + 20u) AW (0xb6dbf8c0) 0 nearly-empty primary-for CW (0xb6bea2d0) subvttidx=4u W (0xb6e3db04) 0 nearly-empty virtual primary-for AW (0xb6dbf8c0) vptridx=20u vbaseoffset=-0x00000000000000014 BW (0xb6dbf900) 4 nearly-empty lost-primary subvttidx=12u vptridx=24u vptr=((& CW::_ZTV2CW) + 48u) W (0xb6e3db04) alternative-path what are each entries in Vtable for AW AW::_ZTV2AW: 7u entries 0 0u // ? 4 0u // ? 8 0u // ? Vtable for CW CW::_ZTV2CW: 14u entries 0 0u // ? 4 0u // ? 8 4u // ? 12 (int ()(...))0 16 (int ()(...))(& _ZTI2CW) 20 BW::_ZTv0_n12_N2BW1fEv // ? 24 AW::g 28 4294967292u // ? 32 4294967292u // ? 36 0u // ? 40 (int ()(...))-0x00000000000000004 // some delta 44 (int ()(...))(& _ZTI2CW) 48 BW::f 52 0u // ? Thanks, Ganesh

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  • Which part of this simple script is breaking internet explorer?

    - by user961627
    I'm writing a simple virtual keyboard for Arabic (indic) digits. Just links that, when clicked, produce the corresponding Unicode Indic character. The following is my HTML, in the body tag: <a href="#" id='start'>Start</a> <div id='vkb' style='padding:20px;font-size:16pt; border:2px solid #eee; width:250px' dir='ltr'> <a class='key' href='#' id='0'>&#1632;</a> <a class='key' href='#' id='1'>&#1633;</a> <a class='key' href='#' id='2'>&#1634;</a> <a class='key' href='#' id='3'>&#1635;</a> <a class='key' href='#' id='4'>&#1636;</a><br /> <a class='key' href='#' id='5'>&#1637;</a> <a class='key' href='#' id='6'>&#1638;</a> <a class='key' href='#' id='7'>&#1639;</a> <a class='key' href='#' id='8'>&#1640;</a> <a class='key' href='#' id='9'>&#1641;</a> <br /> <a href="#" id='stop'>Stop</a> </div> <div id='output' /></div> This is my CSS: a { text-decoration:none; } .key { padding:7px; background-color:#fff; margin:5px; border:2px solid #eee; display:inline-block; } .key:hover { background-color:#eee; } And this is my javascript: <script type="text/javascript" src="js/jquery.js"></script> <script> $(document).ready(function(){ var toprint = ""; $('#vkb').hide(); $('#start').click(function(e){ toprint = ""; $('#vkb').show(); }); $('#stop').click(function(e){ $('#vkb').hide(); ret = ar2ind(toprint); $('#output').text(ret); toprint = ""; }); $('#vkb').click(function(e){ var $key = $(e.target).closest('.key'); var pressed = $key.attr('id'); if(pressed === undefined){ pressed = ""; } toprint = toprint + pressed; }); }); function ar2ind(str) { str = str.replace(/0/g, "?"); str = str.replace(/1/g, "?"); str = str.replace(/2/g, "?"); str = str.replace(/3/g, "?"); str = str.replace(/4/g, "?"); str = str.replace(/5/g, "?"); str = str.replace(/6/g, "?"); str = str.replace(/7/g, "?"); str = str.replace(/8/g, "?"); str = str.replace(/9/g, "?"); return str; } </script> It seems simple enough but it's crashing in IE9. (Might be crashing in earlier versions too but haven't been able to check.)

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  • Cannot find Package fop ( Ithink)

    - by efendioglu
    Hello friends I try to use fop engine programatically I search for an example and I find this class import java.io.File; import java.io.IOException; import java.io.OutputStream; import javax.xml.transform.Transformer; import javax.xml.transform.TransformerFactory; import javax.xml.transform.TransformerException; import javax.xml.transform.Source; import javax.xml.transform.Result; import javax.xml.transform.stream.StreamSource; import javax.xml.transform.sax.SAXResult; import org.apache.avalon.framework.ExceptionUtil; import org.apache.avalon.framework.logger.ConsoleLogger; import org.apache.avalon.framework.logger.Logger; import org.apache.fop.apps.Driver; import org.apache.fop.apps.FOPException; import org.apache.fop.messaging.MessageHandler; public class Invokefop { public void convertXML2PDF(File xml, File xslt, File pdf) throws IOException, FOPException, TransformerException { Driver driver = new Driver(); Logger logger = new ConsoleLogger(ConsoleLogger.LEVEL_INFO); driver.setLogger(logger); MessageHandler.setScreenLogger(logger); driver.setRenderer(Driver.RENDER_PDF); OutputStream out = new java.io.FileOutputStream(pdf); try { driver.setOutputStream(out); TransformerFactory factory = TransformerFactory.newInstance(); Transformer transformer = factory.newTransformer(new StreamSource(xslt)); Source src = new StreamSource(xml); Result res = new SAXResult(driver.getContentHandler()); transformer.transform(src, res); } finally { out.close(); } } public static void main(String[] args) { try { System.out.println("JAVA XML2PDF:: FOP ExampleXML2PDF\n"); System.out.println("JAVA XML2PDF:: Preparing..."); File base = new File("../"); File baseDir = new File(base, "in"); File outDir = new File(base, "out"); outDir.mkdirs(); File xmlfile = new File(baseDir, args[0]); File xsltfile = new File(baseDir, args[1]); File pdffile = new File(outDir, args[2]); System.out.println("JAVA XML2PDF:: Input: XML (" + xmlfile + ")"); System.out.println("JAVA XML2PDF:: Stylesheet: " + xsltfile); System.out.println("JAVA XML2PDF:: Output: PDF (" + pdffile + ")"); System.out.println(); System.out.println("JAVA XML2PDF:: Transforming..."); Invokefop app = new Invokefop(); app.convertXML2PDF(xmlfile, xsltfile, pdffile); System.out.println("JAVA XML2PDF:: Success!"); } catch (Exception e) { System.err.println(ExceptionUtil.printStackTrace(e)); System.exit(-1); } } } All the Libs from Fop are in the Classpath including the fop.jar in build directory. After I run thejavac Invokefop.java I get this error: > C:\....\fop>javac Invokefop.java Invokefop.java:21: cannot find symbol symbol : class Driver location: package org.apache.fop.apps import org.apache.fop.apps.Driver; ^ Invokefop.java:23: package org.apache.fop.messaging does not exist import org.apache.fop.messaging.MessageHandler; ^ Invokefop.java:31: cannot find symbol symbol : class Driver location: class Invokefop Driver driver = new Driver(); ^ Invokefop.java:31: cannot find symbol symbol : class Driver location: class Invokefop Driver driver = new Driver(); ^ Invokefop.java:36: cannot find symbol symbol : variable MessageHandler location: class Invokefop MessageHandler.setScreenLogger(logger); ^ Invokefop.java:39: cannot find symbol symbol : variable Driver location: class Invokefop driver.setRenderer(Driver.RENDER_PDF); ^ 6 errors I am relatively new to Java, but with this approach I try to execute the fop engine in c++ using this java class.. Have anybody some Idea, how to solve this errors... Thanx in advance..

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  • Trying to write a std::iterator : Compilation error

    - by Naveen
    I am trying to write an std::iterator for the CArray<Type,ArgType> MFC class. This is what I have done till now: template <class Type, class ArgType> class CArrayIterator : public std::iterator<std::random_access_iterator_tag, ArgType> { public: CArrayIterator(CArray<Type,ArgType>& array_in, int index_in = 0) : m_pArray(&array_in), m_index(index_in) { } void operator++() { ++m_index; } void operator++(int) { ++m_index; } void operator--() { --m_index; } void operator--(int) { --m_index; } void operator+=(int n) { m_index += n; } void operator-=(int n) { m_index -= n; } typename ArgType operator*() const{ return m_pArray->GetAt(m_index); } typename ArgType operator->() const { return m_pArray->GetAt(m_index); } bool operator==(const CArrayIterator& other) const { return m_pArray == other.m_pArray && m_index == other.m_index; } bool operator!=(const CArrayIterator& other) const { return ! (operator==(other)); } private: CArray<Type,ArgType>* m_pArray; int m_index; }; I also provided two helper functions to create the iterators like this: template<class Type, class ArgType> CArrayIterator<Type,ArgType> make_begin(CArray<Type,ArgType>& array_in) { return CArrayIterator<Type,ArgType>(array_in, 0); } template<class Type, class ArgType> CArrayIterator<Type,ArgType> make_end(CArray<Type,ArgType>& array_in) { return CArrayIterator<Type,ArgType>(array_in, array_in.GetSize()); } To test the code, I wrote a simple class A and tried to use it like this: class A { public: A(int n): m_i(n) { } int get() const { return m_i; } private: int m_i; }; struct Test { void operator()(A* p) { std::cout<<p->get()<<"\n"; } }; int main(int argc, char **argv) { CArray<A*, A*> b; b.Add(new A(10)); b.Add(new A(20)); std::for_each(make_begin(b), make_end(b), Test()); return 0; } But when I compile this code, I get the following error: Error 4 error C2784: 'bool std::operator <(const std::_Tree<_Traits &,const std::_Tree<_Traits &)' : could not deduce template argument for 'const std::_Tree<_Traits &' from 'CArrayIterator' C:\Program Files\Microsoft Visual Studio 9.0\VC\include\xutility 1564 Vs8Console Can anybody throw some light on what I am doing wrong and how it can be corrected? I am using VC9 compiler if it matters.

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  • (static initialization order?!) problems with factory pattern

    - by smerlin
    Why does following code raise an exception (in createObjects call to map::at) alternativly the code (and its output) can be viewed here intererestingly the code works as expected if the commented lines are uncommented with both microsoft and gcc compiler (see here), this even works with initMap as ordinary static variable instead of static getter. The only reason for this i can think of is that the order of initialization of the static registerHelper_ object (factory_helper_)and the std::map object (initMap) are wrong, however i cant see how that could happen, because the map object is constructed on first usage and thats in factory_helper_ constructor, so everything should be alright shouldnt it ? I am even more suprised that those doNothing() lines fix the issue, because that call to doNothing() would happen after the critical section (which currently fails) is passed anyway. EDIT: debugging showed, that without the call to factory_helper_.doNothing(), the constructor of factory_helper_ is never called. #include <iostream> #include <string> #include <map> #define FACTORY_CLASS(classtype) \ extern const char classtype##_name_[] = #classtype; \ class classtype : FactoryBase<classtype,classtype##_name_> namespace detail_ { class registerHelperBase { public: registerHelperBase(){} protected: static std::map<std::string, void * (*)(void)>& getInitMap() { static std::map<std::string, void * (*)(void)>* initMap = 0; if(!initMap) initMap= new std::map<std::string, void * (*)(void)>(); return *initMap; } }; template<class TParent, const char* ClassName> class registerHelper_ : registerHelperBase { static registerHelper_ help_; public: //void doNothing(){} registerHelper_(){ getInitMap()[std::string(ClassName)]=&TParent::factory_init_; } }; template<class TParent, const char* ClassName> registerHelper_<TParent,ClassName> registerHelper_<TParent,ClassName>::help_; } class Factory : detail_::registerHelperBase { private: Factory(); public: static void* createObject(const std::string& objclassname) { return getInitMap().at(objclassname)(); } }; template <class TClass, const char* ClassName> class FactoryBase { private: static detail_::registerHelper_<FactoryBase<TClass,ClassName>,ClassName> factory_helper_; static void* factory_init_(){ return new TClass();} public: friend class detail_::registerHelper_<FactoryBase<TClass,ClassName>,ClassName>; FactoryBase(){ //factory_helper_.doNothing(); } virtual ~FactoryBase(){}; }; template <class TClass, const char* ClassName> detail_::registerHelper_<FactoryBase<TClass,ClassName>,ClassName> FactoryBase<TClass,ClassName>::factory_helper_; FACTORY_CLASS(Test) { public: Test(){} }; int main(int argc, char** argv) { try { Test* test = (Test*) Factory::createObject("Test"); } catch(const std::exception& ex) { std::cerr << "caught std::exception: "<< ex.what() << std::endl; } #ifdef _MSC_VER system("pause"); #endif return 0; }

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  • Hibernate many-to-many mapping not saved in pivot table

    - by vincent
    I having problems saving many to many relationships to a pivot table. The way the pojos are created is unfortunately a pretty long process which spans over a couple of different threads which work on the (to this point un-saved) object until it is finally persisted. I associate the related objects to one another right after they are created and when debugging I can see the List of related object populated with their respective objects. So basically all is fine to this point. When I persist the object everything get saved except the relations in the pivot table. mapping files: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <hibernate-mapping package="com.thebeansgroup.jwinston.plugin.orm.hibernate.object"> <class name="ShowObject" table="show_object"> <id name="id"> <generator class="native" /> </id> <property name="name" /> <set cascade="all" inverse="true" name="venues" table="venue_show"> <key column="show_id"/> <many-to-many class="VenueObject"/> </set> </class> </hibernate-mapping> and the other <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <hibernate-mapping package="com.thebeansgroup.jwinston.plugin.orm.hibernate.object"> <class name="VenueObject" table="venue_object"> <id name="id"> <generator class="native"/> </id> <property name="name"/> <property name="latitude" type="integer"/> <property name="longitude" type="integer"/> <set cascade="all" inverse="true" name="shows" table="venue_show"> <key column="venue_id"/> <many-to-many class="ShowObject"/> </set> </class> </hibernate-mapping> pojos: public class ShowObject extends OrmObject { private Long id; private String name; private Set venues; public ShowObject() { } public Long getId() { return id; } public void setId(Long id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public Set getVenues() { return venues; } public void setVenues(Set venues) { this.venues = venues; } } and the other: public class VenueObject extends OrmObject { private Long id; private String name; private int latitude; private int longitude; private Set shows = new HashSet(); public VenueObject() { } @Id @GeneratedValue(strategy = GenerationType.AUTO) public Long getId() { return id; } public void setId(Long id) { this.id = id; } public int getLatitude() { return latitude; } public void setLatitude(int latitude) { this.latitude = latitude; } public int getLongitude() { return longitude; } public void setLongitude(int longitude) { this.longitude = longitude; } public String getName() { return name; } public void setName(String name) { this.name = name; } public Set getShows() { return shows; } public void setShows(Set shows) { this.shows = shows; } } Might the problem be related to the lack of annotations?

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