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  • AS3 Memory management when instantiating extended classes

    - by araid
    I'm developing an AS3 application which has some memory leaks I can't find, so I'd like to ask some newbie questions about memory management. Imagine I have a class named BaseClass, and some classes that extend this one, such as ClassA, ClassB, etc. I declare a variable: myBaseClass:BaseClass = new ClassA(); After a while, I use it to instantiate a new object: myBaseClass = new ClassB(); some time after myBaseClass = new ClassC(); and the same thing keeps happening every x millis, triggered by a timer. Is there any memory problem here? Are the unused instances correctly deleted by the garbage collector? Thanks!

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  • Using Sandy 3D AS3, fill the viewport (exact fit) with multiple 3D objects.

    - by Andrew Mullins
    I'm stitching together an image using multiple instances of the sandy.primitive.Box. Each box is 96x91 while the viewport is 960x273 which should make for an exact fit if I layout the boxes in a perfect grid of 10x3. However, I can't seem to get the exact camera fieldOfView. I've tried a couple formulas (one for adjusting the "focal length" and one for adjusting the fov, directly). Both of these formulas produce a fov angle that is too narrow. // focal length (stage.stageHeight/2) / Math.tan(cam.fov / 2 * Math.PI / 180) // field of view 2 * Math.atan2( (stage.stageHeight/2), -cam.z ) * (180 / Math.PI) Another question about the same project: I need to adjust the perspective of each cube so that the image appears to be in 2D space (flat)... Any ideas on the best method for calculating such a "correction"?

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  • What are the implications of having an "implicit declaration of function" warning in C?

    - by SiegeX
    As the question states, what exactly are the implications of having the 'implicit declaration of function' warning? We just cranked up the warning flags on gcc and found quite a few instances of these warnings and I'm curious what type of problems this may have caused prior to fixing them? Also, why is this a warning and not an error. How is gcc even able to successfully link this executable? As you can see in the example below, the executable functions as expected. Take the following two files for example: file1.c #include <stdio.h> int main(void) { funcA(); return 0; } file2.c #include <stdio.h> void funcA(void) { puts("hello world"); } Compile & Output $ gcc -Wall -Wextra -c file1.c file2.c file1.c: In function 'main': file1.c:3: warning: implicit declaration of function 'funcA' $ gcc -Wall -Wextra file1.o file2.o -o test.exe $ ./test.exe hello world

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  • What is recursion? -- In plain english.

    - by Christopher Altman
    I hear this word everyday, but cannot give a meaningful, concise, or plain-english answer to what it is. Recursion is defined by the bastian of knowledge as: Recursion in computer science is a method where the solution to a problem depends on solutions to smaller instances of the same problem.1 The approach can be applied to many types of problems, and is one of the central ideas of computer science.[2] Source Is recursion simply something that repeats itself to get a solution? I am looking for a "Recursion for Dummies" definition, and maybe simple examples. My goal is to be able to understand and explain recursion in my own words. I do not like simply thinking I know the meaning of something because I hear it referenced daily, but have not paused to form my own understanding.

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  • Django: way to test what class a generic relation content_object is?

    - by bitbutter
    In my project I have a class, NewsItem. Instances of NewsItem act like a wrapper. They can be associated with either an ArtWork instance, or an Announcement instance. Here's how the NewsItem model looks: class NewsItem(models.Model): content_type = models.ForeignKey(ContentType) object_id = models.PositiveIntegerField() content_object = generic.GenericForeignKey('content_type', 'object_id') date = models.DateTimeField(default=datetime.datetime.now,) class Meta: ordering = ('-date',) def __unicode__(self): return (self.title()) In a template I'm dealing with a NewsItem instance, and would like to output a certain bunch of html it it's 'wrapping' an Artwork instance, and a different bunch of html if it's wrapping an Announcement instance. Could someone explain how I can write a conditional to test for this? My first naive try looked like this: {% if news_item.content_object.type=='Artwork' %}do this{% else %}do that{% endif %}

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  • Huge AS 3.0 Export Frame

    - by goorj
    I am creating a very simple flash animation with no code or complex effects, just text and simple tweens (Flash CS5) But I have problems reducing the size of my swf. From the generated size report, it looks like it has to do with fonts and/or exported actionscript classes. The frame with AS 3.0 Classes is over 100K, and even though I am only using one fonts, the same characters are embedded/exported multiple times My questions are: Do embedding of mixed TLF/Classic text (or mixing other text properties, spacing/kerning etc) require the same characters to be embedded twice? Do text transformations on TLF text (rotation and different transformations not available in classic text) require embedding of ("internal") AS3 classes that will increase the size of the .swf? (even though none of these classes are explicitly used by me, there are no scripts in the fla project) I have tried removing all the text instances one by one, and at one point, the swf is reduced to only 5-6K, but I am not able to pinpoint exactly what causes the ballooning of the swf

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  • TSQL Check Database Instance Online

    - by David in Dakota
    What is the best way to check if an instance of Microsoft SQL Server is up? I have a view that spans two instances of Microsoft SQL Server but before querying it in a stored procedure I would like to verify that the second instance of the server is up with a fallback option of just querying local data. The second instance is a linked server. Currently I'm considering a SQL CLR function that can attempt to open a connection with a shorter timeout but I'm wondering if it's something that can be done directly in Transact SQL.

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  • Removing duplicates from a Dojo FilteringSelect

    - by chrismacp
    Hi, I'm trying to remove duplicates from a Dojo FilteringSelect without changing the contents of the attached itemFileReadStore data store. I can't seem to find any information on how this is done, if it is indeed possible. I'm thinking I may have to extend the FilteringSelect Dijit and provide the functionality myself but I'm hoping to not have to. The reason I'm trying to remove duplicates with the FilteringSelect and not the data store is because I'm using the same data store with three instances of the FitleringSelect, each displaying different values from each row of the store.

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  • Problem in generation of custom classes at web service client

    - by user443324
    I have a web service which receives an custom object and returns another custom object. It can be deployed successfully on GlassFish or JBoss. @WebMethod(operationName = "providerRQ") @WebResult(name = "BookingInfoResponse" , targetNamespace = "http://tlonewayresprovidrs.jaxbutil.rakes.nhst.com/") public com.nhst.rakes.jaxbutil.tlonewayresprovidrs.BookingInfoResponse providerRQ(@WebParam(name = "BookingInfoRequest" , targetNamespace = "http://tlonewayresprovidrq.jaxbutil.rakes.nhst.com/") com.nhst.rakes.jaxbutil.tlonewayresprovidrq.BookingInfoRequest BookingInfoRequest) { com.nhst.rakes.jaxbutil.tlonewayresprovidrs.BookingInfoResponse BookingInfoResponse = new com.nhst.rakes.jaxbutil.tlonewayresprovidrs.BookingInfoResponse(); return BookingInfoResponse; } But when I create a client for this web service, two instances of BookingInfoRequest and BookingInfoResponse generated even I need only one instance. This time an error is returned that says multiple classes with same name are can not be possible....... Here is wsdl..... <?xml version='1.0' encoding='UTF-8'?><!-- Published by JAX-WS RI at http://jax-ws.dev.java.net. RI's version is JAX-WS RI 2.2.1-hudson-28-. --><!-- Generated by JAX-WS RI at http://jax-ws.dev.java.net. RI's version is JAX-WS RI 2.2.1-hudson-28-. --><definitions xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" xmlns:wsp="http://www.w3.org/ns/ws-policy" xmlns:wsp1_2="http://schemas.xmlsoap.org/ws/2004/09/policy" xmlns:wsam="http://www.w3.org/2007/05/addressing/metadata" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:tns="http://demo/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://schemas.xmlsoap.org/wsdl/" targetNamespace="http://demo/" name="DemoJAXBParamService"> <wsp:Policy wsu:Id="DemoJAXBParamPortBindingPolicy"> <ns1:OptimizedMimeSerialization xmlns:ns1="http://schemas.xmlsoap.org/ws/2004/09/policy/optimizedmimeserialization" /> </wsp:Policy> <types> <xsd:schema> <xsd:import namespace="http://tlonewayresprovidrs.jaxbutil.rakes.nhst.com/" schemaLocation="http://localhost:31133/DemoJAXBParamService/DemoJAXBParamService?xsd=1" /> </xsd:schema> <xsd:schema> <xsd:import namespace="http://tlonewayresprovidrs.jaxbutil.rakes.nhst.com" schemaLocation="http://localhost:31133/DemoJAXBParamService/DemoJAXBParamService?xsd=2" /> </xsd:schema> <xsd:schema> <xsd:import namespace="http://tlonewayresprovidrq.jaxbutil.rakes.nhst.com/" schemaLocation="http://localhost:31133/DemoJAXBParamService/DemoJAXBParamService?xsd=3" /> </xsd:schema> <xsd:schema> <xsd:import namespace="http://tlonewayresprovidrq.jaxbutil.rakes.nhst.com" schemaLocation="http://localhost:31133/DemoJAXBParamService/DemoJAXBParamService?xsd=4" /> </xsd:schema> <xsd:schema> <xsd:import namespace="http://demo/" schemaLocation="http://localhost:31133/DemoJAXBParamService/DemoJAXBParamService?xsd=5" /> </xsd:schema> </types> <message name="providerRQ"> <part name="parameters" element="tns:providerRQ" /> </message> <message name="providerRQResponse"> <part name="parameters" element="tns:providerRQResponse" /> </message> <portType name="DemoJAXBParam"> <operation name="providerRQ"> <input wsam:Action="http://demo/DemoJAXBParam/providerRQRequest" message="tns:providerRQ" /> <output wsam:Action="http://demo/DemoJAXBParam/providerRQResponse" message="tns:providerRQResponse" /> </operation> </portType> <binding name="DemoJAXBParamPortBinding" type="tns:DemoJAXBParam"> <wsp:PolicyReference URI="#DemoJAXBParamPortBindingPolicy" /> <soap:binding transport="http://schemas.xmlsoap.org/soap/http" style="document" /> <operation name="providerRQ"> <soap:operation soapAction="" /> <input> <soap:body use="literal" /> </input> <output> <soap:body use="literal" /> </output> </operation> </binding> <service name="DemoJAXBParamService"> <port name="DemoJAXBParamPort" binding="tns:DemoJAXBParamPortBinding"> <soap:address location="http://localhost:31133/DemoJAXBParamService/DemoJAXBParamService" /> </port> </service> </definitions> So, I want to know that how to generate only one instance(I don't know why two instances are generated at client side?). Please help me to move in right direction.

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  • Choking experienced while using the TCP/IP Adapter for BizTalk Server 2006

    - by Burhan
    I am using the TCP/IP Adapter for BizTalk Server 2006 which was obtained from codeplex: http://www.codeplex.com/BTSTCPIP Once the application was deployed in production, we started to experience choking in the performance of the application. The more the requests, the more the performance degradation. Sometimes, it happens that the receive ports become non-responsive and we have to forcefully restart the host instances to temporarily let the services respond again but we experience the same problems again and again. I would like to ask if any of you have used the same adapter and have you ever experienced the similar issues? If yes, how can we overcome theses issues. Thanks.

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  • Rails find_or_create by more than one attribute?

    - by tybro0103
    There is a handy dynamic attribute in active-record called find_or_create_by: Model.find_or_create_by_<attribute>(:<attribute> => "") But what if I need to find_or_create by more than one attribute? Say I have a model to handle a M:M relationship between Group and Member called GroupMember. I could have many instances where member_id = 4, but I don't ever want more than once instance where member_id = 4 and group_id = 7. I'm trying to figure out if it's possible to do something like this: GroupMember.find_or_create(:member_id => 4, :group_id => 7) I realize there may be better ways to handle this, but I like the convenience of the idea of find_or_create.

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  • Restrict violation of architecture - asp.net MVP

    - by Srikanth
    If we had a defined hierarchy in an application. For ex a 3 - tier architecture, how do we restrict subsequent developers from violating the norms? For ex, in case of MVP (not asp.net MVC) architecture, the presenter should always bind the model and view. This helps in writing proper unit test programs. However, we had instances where people directly imported the model in view and called the functions violating the norms and hence the test cases couldn't be written properly. Is there a way we can restrict which classes are allowed to inherit from a set of classes? I am looking at various possibilities, including adopting a different design pattern, however a new approach should be worth the code change involved.

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  • Is there a pattern that allows a constructor to be called only from a specific factory and from nowh

    - by willem
    We have a class, say LegacyUserSettingsService. LegacyUserSettingsService implements an interface, IUserSettingsService. You can get an instance of the IUserSettingsService by calling our ApplicationServicesFactory. The factory uses Spring.NET to construct the concrete LegacyUserSettingsService. The trouble is that new developers sometimes do their own thing and construct new instances of the LegacyUserSettingsService directly (instead of going via the factory). Is there a way to protect the constructor of the concrete class so it can only be called from the factory? A well-known pattern perhaps? Note that the concrete class resides in a different assembly (separate from the Factory's assembly, so the internal keyword is not a solution). The factory assembly references the other assembly that contains the concrete class. Any ideas?

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  • Accessing parent 'this' inside a jQuery $.getJSON

    - by JP
    I'm going to assume that the overall structure of my code as it currently stands is 'best', otherwise this question gets too long, but if I've made any obvious mistakes (or if I've made life hard for myself) then please correct away! Using jQuery, I have a javascript 'class' set out something like this: function MyClass () { this.noise = "Woof" this.dostuff = function() { $.getJSON("http://cows.go",function(moo) { this.noise = moo.inEnglish; } } } var instance = new MyClass(); instance.doStuff() console.log(instance.noise) I'm expecting some kinda tea drinking moo in the console, but of course I'm getting an error about this.noise not being defined (because $.getJSON doesn't pass this through, right?) Any suggestions as to how to be able to affect instance.squeak for any and all instances of MyClass without interference?

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  • Evaluation of jQuery function variable value during definition of that function

    - by thesnail
    I have a large number of rows in a table within which I wish to attach a unique colorpicker (jQuery plugin) to each cell in a particular column identified by unique ids. Given this, I want to automate the generation of instances of the colorpicker as follows: var myrows={"a","b","c",.....} var mycolours={"ffffff","fcdfcd","123123"...} for (var i=0;i<myrows.length;i++) { $("#"+myrows[i]+"colour").ColorPicker({flat: false, color: mycolours[i], onChange: function (hsb, hex, rgb) { $("#"+myrows[i]+"currentcolour").css('backgroundColor', '#' + hex); } }); Now this doesn't work because the evaluation of the $("#"+myrows[i]+"currentcolour") component occurs at the time the function is called, not when it is defined (which is want I need). Given that this plugin javascript appends its code to the level and not to the underlying DOM component that I am accessing above so can't derive what id this pertains to, how can I evaluate the variable during function declaration/definition? Thanks for any help/insight anyone can give. Brian.

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  • A PHP object server for business logic

    - by Matthieu
    I wonder if such a thing is possible or even exist : In the MVC pattern, I would like to have the Model part to be persistant in memory, instead of reloading my instances at each execution. So I want only the Controller and View part to be executed. Is there any solution of server that would provide PHP objects (just like a Mysql server provides data records), and that keeps these objects in memory ? A problem would be also : how to have a constructed query to get objects ? Maybe PHP Linq ?

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  • How can I copy a queryset to a new model in django admin?

    - by user3806832
    I'm trying to write an action that allows the user to select the queryset and copy it to a new table. So: John, Mark, James, Tyler and Joe are in a table 1( called round 1) The user selects the action that say to "move to next round" and those same instances that were chosen are now also in the table for "round 2". I started trying with an action but don't really know where to go from here: def Round_2(modeladmin, request, queryset): For X in queryset: X.pk = None perform.short_description = "Move to Round 2" How can I copy them to the next table with all of their information (pk doesn't have to be the same)? Thanks

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  • Replace repeating character with array elements in PHP

    - by Will Croft
    I hope this is blindingly obvious: I'm looking for the fastest way to replace a repeating element in a string with the elements in a given array, e.g. for SQL queries and parameter replacement. $query = "SELECT * FROM a WHERE b = ? AND c = ?"; $params = array('bee', 'see'); Here I would like to replace the instances of ? with the corresponding ordered array elements, as so: SELECT * FROM a WHERE b = 'bee' and c = 'see' I see that this might be done using preg_replace_callback, but is this the fastest way or am I missing something obvious?

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  • Should I use Enumeration or Class stereotype in UML to represent a type directory table?

    - by Ivan
    Let's take 2 UML class model entities: One represents an actual Order and another represents an Orede Type. Any Order corresponds to one Type. A 2-way-naviglabe many Orders to one Type relation is meant. Order Type instances are, for example, "Request availability", "Request price", "Preorder", "Buy", "Cancel", "Request support", etc. Order Types are to be addable and editable in the resulting application. Should I model Order Type as Class or as Enumeration? From the data perspective I can't see the difference actually.

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  • C# listbox,params

    - by Oyeme
    As Andrew Hare suggested in his answer: Create a field to store all the ListBox instances and then change the constructor to accept an arbitrary number of them: by I tried the following class scaner { readonly IEnumerable<ListBox> listBoxes; public IEnumerable<ListBox> ListBoxes { get { return this.listBoxes; } } public scaner(params ListBox[] listBoxes) { this.listBoxes = listBoxes; } } This will allow you to do this: scaner Comp = new scaner(listBox1, listBox2); How can i access listbox1? In class scaner i'm trying to call this.listBoxes. (I need to call the listbox1 in scaner class.How can i do/call it? Thanks for answers.

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  • Outputting an HTML entity character from a helper function

    - by morpheous
    I am using Symfony 1.3.2 on Ubuntu. I have written a little helper function (statsfoo) that prints out summary statistics about an item. I am using the helper function in my template like this: // In StatsHelper.php <?php function statsfoo($some_param) { return "<div class=\"sfoo\">&9830; the stats number for item is 42</div>" } //In showStatsSuccess.php <?php use_helper(Stats); <?php echo statsfoo($foobar, ESC_ENTITIES); I tried both ESC_ENTITIES and ESC_RAW. In both instances, the raw number (&9830) was displayed in the page. I want to display the diamond instead. What am I doing wrong and how can I fix this?

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  • Using __str__ representation for printing objects in containers in Python

    - by BobDobbs
    I've noticed that when an instance with an overloaded str method is passed to the print() function as an argument, it prints as intended. However, when passing a container that contains one of those instances to print(), it uses the repr method instead. That is to say, print(x) displays the correct string representation of x, and print(x, y) works correctly, but print([x]) or print((x, y)) prints the repr representation instead. First off, why does this happen? Secondly, is there a way to correct that behavior of print() in this circumstance?

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  • CKEDITOR, is return some strange characters

    - by nobosh
    With CKEDITOR, when I use JS to get the contents of the Text Editor, I'm getting back: <p>\u000a\u0009&nbsp;ad adad ad asd</p>\u000a When I should have gotten: <p>ad adad ad asd</p> Any idea what's going on here? The only difference that could be the cause is that I'm dynamically created textareas on load, and using a class to find the editor: $('.guideItem-textarea').each(function(index, value){ // ID of the textarea var targeteditor = $(this).attr('id'); var targeteditorID = $(this).attr('id').replace('noteguide',''); // Contents in the editor textareacontents = CKEDITOR.instances[targeteditor].getData(); }); Any ideas?

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  • I need to debug my BrowserHelperObject (BHO) (in C++ with Visual Studio 2008) after a internet explo

    - by BHOdevelopper
    Hi, here is the situation, i'm developping a Browser Helper Object (BHO) in C++ with Visual Studio 2008, and i learned that the memory wasn't managed the same way in Debug mode than in Release mode. So when i run my BHO in debug mode, internet explorer 8 works just fine and i got no erros at all, the browser stays alive forever, but as soon as i compile it in release mode, i got no errors, no message, nothing, but after 5 minutes i can see through the task manager that internet explorer instances are just eating memory and then the browser just stop responding every time. Please, I really need some hint on how to get a feedback on what could be the error. I heard that, often it was happening because of memory mismanagement. I need a software that just grab a memory dump or something when iexplorer crashes to help me find the problem. Any help is appreciated, I'll be looking for responses every single days, thank you.

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  • What port is my SQL2008 instance running on?

    - by George
    Check out this pic of my SQL 2008 Management Configuration screen for TCP: I need to know what port I am running on. Base on this previous post, I don't believe that it is 1433, which I guess is the default. When I check my port number in SQL Config Mgr., it is blank. Does this suggest a default port? Note that I have multiple SQL Server instance on the db server. 1 2000 instance and two 2008 instances. I want to know the port of the 2008b instance. Can you help?

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