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  • Manage bad_alloc exception in C++ construtor

    - by Jimmy zhang
    I have Java experience and recently am doing some C++ coding. My question is that if I have class A, in which I have to instantiate class B and class C as two of the member variables of A. If in the constructor of A, should I assume that allocations of class B and C never fail, and handle the bad allocation exception in the destructor of A? If I don't make that assumption, meaning that I add some try catch block to catch bad_alloc of class B and class C, then if the allocation exception occurs, should I do clean up in the constructor of A? What are the recommended practices? If "new" generates a bad allocation, what value does the pointer carry?

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  • Multiple interfaces inhertience. Casting from one to another

    - by yossi1981
    Consider the following set of classes/Interfaces: class IFish{ public: virtual void eat() = 0; } class IFriendly{ public: virtual void protect() = 0; } class IAggresive{ public: virtual void attack(Point inDest) = 0; } class CDolphin : public IFish, IFriendly{ eat... protect.... } class CShark : public IFish, IAggresive{ eat.... attack... } Now I am having the following class void CDiver { Void shouldRunAway(IFish* fish) { //??? } } My question is , can "shouldRunAway" extract from the fish argument whether it is an IAggresive or IFreindly (if it is any of these at all...) is there some kind of casting that can help out?

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  • Adding the text area input to a list with jquery

    - by amylynn83
    I am making a shopping list app. When an item is added to the text input, it should be converted into a list item with a class of "tile" and added to the beginning of the list with a class of ".shopping_item_list". Here is my HTML: <section> <h1 class="outline">Shopping List Items</h1> <ul class="shopping_item_list"> <li class="tile">Flowers<span class="delete">Delete</span></li> </ul> </section> My jQuery: $("input[name='shopping_item']").change(function() { var item = $(this).val(); $("<li class='tile'>+ item +</li>").prependTo(".shopping_item_list"); $(".tile").removeClass("middle"); $(".shopping_item_list li:nth-child(3n+2)").addClass("middle"); }); This isn't working, and I can't figure out why. I'm new to jQuery. Also, I need to add the "delete" span to the list item and am not sure how. Thanks for any help you can offer! Edited to add: Thanks to the feedback here, I was able to make it work with: $("input[name='shopping_item']").change(function() { var item = $(this).val(); $("<li class='tile'>" + item + "<span class='delete'>Delete</span>" + " </li>").prependTo(".shopping_item_list"); $(".tile").removeClass("middle"); $(".shopping_item_list li:nth-child(3n+2)").addClass("middle"); }); However, in my jquery, I have functions for the classes "tile" and "delete" that are not working for newly added items. // hide delete button $(".delete").hide(); // delete square $(".tile").hover(function() { $(this).find(".delete").toggle(); }); $(".tile").on("click", ".delete", function() { $(this).closest("li.tile").remove(); $(".tile").removeClass("middle"); $(".shopping_item_list li:nth-child(3n+2)").addClass("middle"); }); // cross off list $(".tile").click(function() { $(this).toggleClass("deleteAction"); }); The new items, which have these classes applied aren't using these functions at all. Do I need to add the functions below the add item? Does the order in which they appear in my js file matter? Do I need to add some kind of function?

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  • Other link relationships and impact to the SEO

    - by haha
    Example other link relationships <head> <link rel='index' title='Main Title' href='http://domain.com/' /> <link rel='start' title='Part Three' href='http://domain.com/part-3/' /> <link rel='prev' title='Part Two' href='http://domain.com/part-2/' /> <link rel='next' title='Part Four' href='http://domain.com/part-4/' /> </head> Questions Have a big impact to make my site get a nice rank to Search Engine?

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  • Symfony 1.3: different form filters generated

    - by user248959
    Hi, i have this class in rs1/lib/filter/doctrine/FelizFormFilter.class.php <?php /** * Feliz filter form. * * @package rs * @subpackage filter * @author Your name here * @version SVN: $Id: sfDoctrineFormFilterTemplate.php 23810 2009-11-12 11:07:44Z Kris.Wallsmith $ */ class FelizFormFilter extends BaseFelizFormFilter { public function configure() { } } and this in rs2/lib/filter/doctrine/FelizFormFilter.class.php <?php /** * Feliz filter form. * * @package filters * @subpackage Feliz * * @version SVN: $Id: sfDoctrineFormFilterTemplate.php 11675 2008-09-19 15:21:38Z fabien $ */ class FelizFormFilter extends BaseFelizFormFilter { public function configure() { } } Both were generated using "php symfony doctrine:build --all --and-load" and the version of symfony is 1.3.4 in both. This is the schema of both cases: Feliz: columns: name: string(20) Could you tell me why are different? One more thing in Eclipse: when i go with the mouse pointer to the word "BaseFelizFormFilter", in the second case (rs2) the yellow window with the information about the class is showed, but in the first case that yellow popup is not showed. Why? Javi

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  • CSS: How the backgrounds can extend the border and overlap?

    - by AlexStack
    I'm designing a navigation bar as shown in image below (a) with the following code: <ul> <li class="unselected">Step 1</li> <li class="selected">Step 2</li> <li class="unselected">Step 3</li> <li class="unselected">Step 4</li> <li class="unselected">Step 5</li> </ul> I want to have one background image for unselected steps (d) and one for the selected step (c). For simplicity let's assume Step 1 and Step 5 use the same background as well. I want to adjust the button background in HTML only with a class name. The question is how can I achieve the result with CSS? I just want to know how background of two neighbor elements can overlap each other?

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  • Should the hostname of my VPS point to the dedi IP of my Domain or to to a shared one used for new account creation?

    - by thomas
    I leased a VPS which I want to use to sell shared hosting. 3 IPs - I call them A, B and C here for simplicity. Actual setup is: A=NS1.mydomain.com; host.mydomain.com and is used to set-up new accounts in shared environment B=NS2.mydomain.com C=dedicated IP for mydomain.com (SSL secured) The more I read about DNS, the more I get confused; thus my question: Is this configuration "Good Practice", especially the hostname pointing to A rather than to C? And what would be a better alternative?

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  • Get the subdomain from a URL

    - by jb
    Getting the subdomain from a URL sounds easy at first. http://www.domain.example Scan for the first period then return whatever came after the "http://" ... Then you remember http://super.duper.domain.example Oh. So then you think, okay, find the last period, go back a word and get everything before! Then you remember http://super.duper.domain.co.uk And you're back to square one. Anyone have any great ideas besides storing a list of all TLDs? John

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  • cookie not getting tracked why?

    - by user158721
    hi, on one domain i use command as:: setcookie( "cookiename", "cookievalue", expires after two days, "/", "domain1.com" ); on other domain i used a pixel code as that url not able to read cookie , but the same url able to read cookie when it is called directly. when i put htat url as a pixel code on other domain . it is not able to read value. what might be the problem for this ?? Best Regards, Satish Kalepu

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  • Covariant return types in Java enums

    - by Kelvin Chung
    As mentioned in another question on this site, something like this is not legal: public enum MyEnum { FOO { public Integer doSomething() { return (Integer) super.doSomething(); } }, BAR { public String doSomething() { return (String) super.doSomething(); } }; public Object doSomething(); } This is due to covariant return types apparently not working on enum constants (again breaking the illusion that enum constants are singleton subclasses of the enum type...) So, how about we add a bit of generics: is this legal? public enum MyEnum2 { FOO { public Class<Integer> doSomething() { return Integer.class; } }, BAR { public Class<String> doSomething() { return String.class; } }; public Class<?> doSomething(); } Here, all three return Class objects, yet the individual constants are "more specific" than the enum type as a whole...

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  • Jquery expanding the hover area

    - by Shishant
    Hello, This is my my result html And html of it is like this <li id="33"> <div class="todoRow"> <span class="status_1">Test13</span> <img class="delete_todo" alt="Delete" src="trash.png"> </div> </li> I am using toggleClass to change the class of span on hover. I want to make it hover-able till the width of delete icon so I can toggle the class I dont want to use div to trigger the hover because in that case when trash icon is hovered it toggles class of span element too.

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  • Text replace with regex in SQL Server

    - by Thiyaneshwaran S
    Currently I have a SQL server column of type nvarchar(max) which has text that starts with <span class="escape_<<digits>>"></span> The only thing that varies in the pattern is the <<digits>> in the class name. The common part is <span class="myclass_ and the closing </span> Some sample values are <span class="myclass_12"></span> <span class="myclass_234"></span> <span class="myclass_4546"></span> These span text are present only at the beginning of the column. Any such matching span in the middle should not be removed or matched. Whats the SQL Server query with regex to remove all these occurances of span?

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  • Select from parent table return ID = 0 column values for child objects

    - by SaD
    Entities: public class Person { public Person(){} public virtual long ID { get; set; } } public class Employee : Person { public Employee(){} public virtual long ID { get; set; } public virtual string Appointment { get; set; } } Mappings: public class PersonMap : ClassMap<Person> { public PersonMap() { Id(x => x.ID) .GeneratedBy.Identity(); } } public class EmployeeMap : SubclassMap<Employee> { public EmployeeMap() { KeyColumn("ID"); Map(x => x.Appointment) .Not.Nullable() .Length(50); } } 2 items in Person table 1 item in Employee table (1 in base class, 1 in child class) Query:var list = Session.CreateQuery("from Person").List<Person>(); Return: 0 | ID = 1 1 | ID = 0, Appointment = "SomeAppointment"

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  • Multiple mod rewrites in .htaccess

    - by Bob
    I want the following rules but I don't seem to get the right setup. <domain>/training-courses/ both with or without the slash at the end it should go to: <domain>/?index.php?page=training-courses and for each variable extra after this I want it to behave like this: <domain>/training-courses/success/another-value/and-yet-another/ to <domain>/?index.php?page=training-courses&val1=success&val2=another-value&val3=and-yet-another-value If it's not possible to have the option for unlimited leading variables, i'd like to have at least 2 variables after the page variable Is this possible? and how do I get this sorted out? I have this so far: RewriteEngine On RewriteRule ^test/([^/]*)/$ /test/index.php?pagina=$1&val1=$2 RewriteRule ^test/([^/]*)$ /test/index.php?pagina=$1&val1=$2 RewriteRule ^test/([^/]*)/([^/]*)/$ /test/index.php?pagina=$1&val1=$2 RewriteRule ^test/([^/]*)/([^/]*)$ /test/index.php?pagina=$1&val1=$2 RewriteRule ^test/([^/]*)/([^/]*)/([^/]*)/$ /test/index.php?pagina=$1&val1=$2&val2=$3 RewriteRule ^test/([^/]*)/([^/]*)/([^/]*)$ /test/index.php?pagina=$1&val1=$2&val2=$3

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  • Objective C instance variables - Newbie

    - by Dwayne King
    OK - so I'm sure my confusion here is just a result of being stuck in a "Java mindset" and not understanding how Obj C differs in this case. In Java, I can declare a variable in a class, like this, and each instance of that class will have it's own: MyClass { String myVar; MyClass() { // constructor } } In Obj C I tried to do the same thing by declaring a variable only in the .m file like this: #import "MyClass.h" @implementation MyClass NSString *testVar; @end My expectation here was that this variable has a scope limited to this class. So I created a second class (identical): #import "MySecondClass.h" @implementation MySecondClass NSString *testVar; @end What I'm seeing (and has me baffled) is that changing the variable in one class, affects the value seen in the other class. In fact, if I set a breakpoint, and then "Jump to Definition" of the variable, it takes me to th I've created an extremely small XCode project that demonstrates the problem here Nothing more humbling than moving to a new language :) Thanks in advance.

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  • Populate CruiseControl email publisher user addresses from file

    - by Unsliced
    Currently my CruiseControl.NET email publisher has its list of users hard-coded in the build config file <publishers> [ ... ] <email from="[email protected]" mailhost="stmp.domain.com" mailport="25" includeDetails="TRUE"> <replyto>[email protected]</replyto> <users> <user name="a.user" group="buildmaster" address="[email protected]"/> <user name="b.user" group="developers" address="[email protected]"/> </users> <groups> <group name="developers"> <notifications> <notificationType>Failed</notificationType> <notificationType>Fixed</notificationType> </notifications> </group> <group name="buildmaster"> <notifications> <notificationType>Always</notificationType> </notifications> </group> </groups> <modifierNotificationTypes> <NotificationType>Failed</NotificationType> <NotificationType>Fixed</NotificationType> </modifierNotificationTypes> </email> </publishers> I'd like to be able to read the list of users from an external file. We have dozens of build files and I'd like to streamline the process of adding new users and removing ones that are no longer interested. Can I do this?

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  • Bring Control to ToolBox

    - by Mohanavel
    I created a TextBoxControl which is inherited from Infragistics.Win.UltraWinEditors.UltraTextEditor, an Infragistics control. As showed below. public class TextBoxControl : Infragistics.Win.UltraWinEditors.UltraTextEditor { //My Stuff } At some level Infragistics.Win.UltraWinEditors.UltraTextEditor class also inherited from WinForm's "Control" class. My problem is, this control is not appearing in the ToolBox. I done two steps 1. Choose from browse option and select the dll where the class present 2. Drag and drop the dll directly to the ToolBox In-fact both are same, TextBoxControl control is not appearing in the ToolBox, what i missing here. Edit : TextBoxControl class have empty constructor, nothing special in this class.

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  • How to run a widget inside of an activity in Android?

    - by user220755
    I have a widget built to give the user the chance to choose the date (I did not build it, I am building on top of an open source software). Now, I need to display this widget inside of a class that extends the activity class in Android. Let me show some code. Let us say this is the activity class: public class RandomClass extends Activity { public void onCreate(Bundle savedInstanceState) { // I want to run the widget here when the class is created // (the activity is created) } } The widget i want to run is a widget that lets the user choose the date. I know I code use one of Android's activities but I need to build on top of the code so I have to run it inside of the activity class I created. Sorry if this is not clear, ask any questions and i will be more than glad to answer them and clarify.

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  • What is wrong with these jquery statements?

    - by Pandiya Chendur
    I cant able to get this jquery statement to work on page load but it works once when i refresh F5 the page..... <script type="text/javascript"> var itemsPerPage = 5; $(document).ready(function() { getRecordspage(0, itemsPerPage); var maxvalues = $("#HfId").val(); alert(maxvalues); $(".pager").pagination(maxvalues, { //my syntax }); }); </script> On the initial pageload alert(maxvalues); is nothing... But when i refresh it shows the value of maxvalues which is in the hidden field HfId because it is assigned in the function getRecordspage.... Why this strange behaviour.... Any suggestion... EDIT: function getRecordspage(curPage) { $.ajax({ type: "POST", url: "Default.aspx/GetRecords", data: "{'currentPage':" + (curPage + 1) + ",'pagesize':5}", contentType: "application/json; charset=utf-8", dataType: "json", success: function(jsonObj) { $("#ResultsDiv").empty(); $("#HfId").val(""); var strarr = jsonObj.d.split('##'); var jsob = jQuery.parseJSON(strarr[0]); var divs = ''; $.each(jsob.Table, function(i, employee) { divs += '<div class="resultsdiv"><br /><span class="resultName">' + employee.Emp_Name + '</span><span class="resultfields" style="padding-left:100px;">Category&nbsp;:</span>&nbsp;<span class="resultfieldvalues">' + employee.Desig_Name + '</span><br /><br /><span id="SalaryBasis" class="resultfields">Salary Basis&nbsp;:</span>&nbsp;<span class="resultfieldvalues">' + employee.SalaryBasis + '</span><span class="resultfields" style="padding-left:25px;">Salary&nbsp;:</span>&nbsp;<span class="resultfieldvalues">' + employee.FixedSalary + '</span><span style="font-size:110%;font-weight:bolder;padding-left:25px;">Address&nbsp;:</span>&nbsp;<span class="resultfieldvalues">' + employee.Address + '</span></div>'; }); $("#ResultsDiv").append(divs); $(".resultsdiv:even").addClass("resultseven"); $(".resultsdiv").hover(function() { $(this).addClass("resultshover"); }, function() { $(this).removeClass("resultshover"); }); $("#HfId").val(strarr[1]); } }); }

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  • Using Wordpress as a CMS to a site AND blog (two completely different layouts for each). Duplicate i

    - by Somebody still uses you MS-DOS
    I'm going to create a website using Wordpress static pages feature. It's going to have a menu for all the created pages. A blog is going to be created as well. This blog has a completely different layout/menu from the main site, but within the same domain: "http://www.domain.com" is the website url, and "http://www.domain.com/blog/" is the blog url. I was thinking of installing two different Wordpress instances: /var/www/public_html/ and /var/www/public_html/blog/. Although it's a simple solution, users are going to be duplicated: if you change password in one system, you need to change in the other. So, I would like to know from you which other approaches are possible: create a "dynamic" theme (call a theme when in root domain, another whern /blog - dont even know if this is possible), or for example a plugin to syncronize users from both instances? Does Wordpress MU solve this problem for me? Thanks!

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  • subdomain with rewriteModule

    - by Sadegh
    hi i'm using this rule for rewriting subdomain and i'm corrected host file to 127.0.0.1 domain.net when user typed news.domain.net/default.aspx it must return domain.net/news/default.aspx but browser showed Address not found. how do i? please help thanks all

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  • How to add new field(s) to the contact?

    - by user328302
    I want to add a Custom field to the ContactsContract content provider. I'm trying to build a Voip application and would like to add a SIP address(name@domain) field to it. What MIME type will I need to associate with it? Also I want to add a group address field which will have a list of group addresses in it (name@domain, name@domain,...). Wich MIME type will I have to associate with this type of field. I also want to add custom fields to the Call History like a session ID and SIP address(name@domain) field. How can I customize the call history? It'll be great if someone can give me an example.

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  • Overload and hide methods in Java

    - by Marco
    Hi, i have an abstract class BaseClass with a public insert() method: public abstract class BaseClass { public void insert(Object object) { // Do something } } which is extended by many other classes. For some of those classes, however, the insert() method must have additional parameters, so that they instead of overriding it I overload the method of the base class with the parameters required, for example: public class SampleClass extends BaseClass { public void insert(Object object, Long param){ // Do Something } } Now, if i instantiate the SampleClass class, i have two insert() methods: SampleClass sampleClass = new SampleClass(); sampleClass.insert(Object object); sampleClass.insert(Object object, Long param); what i'd like to do is to hide the insert() method defined in the base class, so that just the overload would be visible: SampleClass sampleClass = new SampleClass(); sampleClass.insert(Object object, Long param); Could this be done in OOP?

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  • C++ inheritance question

    - by user233973
    Hi guys, I have a C++ inheritance related question. I have a set of classes like this (I have not given the complete class structure coz I am lazy :) ). I want to access chiComponent class public methods using com pointer. How should I go about it? Note that I am having to change the object which "com" is pointing to in a lot of places. So I do not think I can have another chiComponent *ccom = <some_cast> com; ccom.chiComponentMethod() How should I go about it? class Component{ }; class chiComponent : public Component { public: void chiComponentMethod() { cout << "Hi! Chi component function called!!"; } } class parent { protected: Component *com; }; class child : public parent{ public: child() { com = new chiComponent(); } } Regards Arun

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  • Creating immutable objects from javabean

    - by redzedi
    Hi All, I am involved in this project where we are building on good bit of legacy code. I have a particular situation about one big java bean object which has to be transferred over wire. So my first thought was to make it immutable and serializable to do the trick .At this point I am faced with a few difficult choices :- 1 Ideally I want some way to automatically generate an immutable, serializable version of this class. I dont have the scope to refactor or alter this class in any way and i would really really hate to have to copy paste the class with a different name ?? 2 Assuming that i gave up on 1 i.e i actually chose to duplicate code of the HUGE javabean class , i still will be in the unsavoury situation of having to write a constructor with some 20-25 parameters to make this class immutable. what is a better way to make a class immutable other than constructor injection ?? Thanks and Regards,

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