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• How to rotate image completely. with out showing the black portion.

  - by learner

  I have an image I have to rotate that image 25 degree. if I rotate it shows some black background. How can I avoid that. How can I rotate image completely with out showing the black portion by using PHP GD. I cant use js for rotation. because I have to merge the image with another one after rotation. any body have the scripts for this please help me.

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• How to query database where date and time field are separate?

  - by learner

  In Table, Time and date fields are two separate fields. I need to make a query something like this give all records where date and time <= givenDateTime. How do i do that please?

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• How does the where clause in MySQL work ?

  - by Eternal Learner

  I have a doubt. Assume R and S are 2 relations with attributes A and B respectively . If I have a query Select * From R, S Where R.A = S.B Does this work like a double For Loop in say c or c++ For( i=0; i<n; i++) For( j=0; j<n; j++) if (i == j) //DO some work

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• Updating value in Linq to SQL IEnumerable

  - by Learner

  Using Linq to SQL: if(!parentlist.childlist.Contains(row1)) parentlist.childlist.Add(row1); else How do I update the required childlist row with row1? Each row of the child list has a unique id. parentlist implements IEnumerable and childlist is IList.

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• what is gd image and gd2 images? what are the difference between them?

  - by learner

  what is gd image and gd2 images? what are the difference between them?

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• How to create two dimensional array in jquery or js

  - by learner

  I need to create dynamic global two dimensional array in jquery or javascript My function is like this <script> var index = 0; var globalArray = new Array(); function createArray(){ var loop = globalArray[index].length; var name = $.("#uname").val(); if(loop == 0){ globalArray[index][0] = uname; }else{ globalArray[index][loop++] = uname; } } </script> <div><input type="text" id="uname"> <input type='button' value='save' onclick='createArray();'> </div> On click of that button I am getting this error "globalArray[index] is undefined" How can I create one global array using jquery or javascript like this. I dont want any hidden field and all. Please help me. Thanks

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• Stop invalid data in a attribute with foreign key constraint using triggers?

  - by Eternal Learner

  How to specify a trigger which checks if the data inserted into a tables foreign key attribute, actually exists in the references table. If it exist no action should be performed , else the trigger should delete the inserted tuple. Eg: Consider have 2 tables R(A int Primary Key) and S(B int Primary Key , A int Foreign Key References R(A) ) . I have written a trigger like this : Create Trigger DelS BEFORE INSERT ON S FOR EACH ROW BEGIN Delete FROM S where New.A <> ( Select * from R;) ); End; I am sure I am making a mistake while specifying the inner sub query within the Begin and end Blocks of the trigger. My question is how do I make such a trigger ?

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• How to read a multiple line input from command line in c?

  - by Eternal Learner

  For Example: If I need to read a multiple line input like: 1 20 2 31 3 41 Also how to specify input in multiple lines? When ever I hit "Enter" on keyboard for new line input the program starts execution?

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• Declaration for object for which creation is wrapped in macro

  - by learner

  The following macro is defined in our code: #define MSGMacro(obj, arg) MyPaymentClass obj(arg) Where MSGMacro is used to creates the object of type MyPaymentClass using code like MSGMacro(Card, 1); MSGMacro(Cash, 2); ---- ---- //removed unwanted things to keep question cleaner. All the above code is in one cpp file, Now the problem is how we can expose these two objects of MyPaymentClass to other units in my project? i.e. I want to use Card and Cash in other CPP files. Please suggest how I can give the declaration for the same in some header file?

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• How server manage different user's requests at a time?

  - by learner

  can you tell me how server handles different http request at a time. If 10 users logged in a send request for a page at the same time what will happen?

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• Does PHP5 supports multi threading?

  - by learner

  Any body knows PHP5 supports multi threading or not. If it support how to implement that?

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• Array comparion for multidimensinal array in php

  - by Learner

  Array 1 = pr($plan_data); Array ( [0] => Array ( [AveragePrice] => 9.631161 [EFLUrl] => http://www.championenergyservices.com/register/EFL_API.asp?rateid=161456 [EarlyTerminationFee] => 150 [HurricaneRecovery] => 0.132 [MeterSurcharge] => 3.05 [OffCycle] => 5 [PUCAssessment] => 0.00167 [PlanDescription] => Savings Champ-6 [PlanId] => 57 [PlanIssueDate] => 12/10/2012 [PlanMonthlyFee] => 0 [PlanName] => PN1058 [PlanRate] => 9.3 [PlanRenewablePercent] => 7.2 [PlanTerm] => 6 [PriorityMoveIn] => 36 [ProviderDisplayName] => CenterPoint Energy [ProviderId] => 21 [ProviderInternalName] => CNP_COAST [RateId] => 161456 [RegularMoveIn] => 16 [TDSPPassThrough] => 0.03791 [TOCUrl] => http://www.championenergyservices.com/register/termsandconditions.asp?rateid=161456 [YRACUrl] => http://www.championenergyservices.com/register/\affiliatefiles\YRAC.PDF [provider] => ces [ProductType] => Fixed [Rep] => Champion Energy Services [Zone] => 77479 ) [1] => Array ( [AveragePrice] => 10.1311693 [EFLUrl] => http://www.championenergyservices.com/register/EFL_API.asp?rateid=161458 [EarlyTerminationFee] => 150 [HurricaneRecovery] => 0.132 [MeterSurcharge] => 3.05 [OffCycle] => 5 [PUCAssessment] => 0.00167 [PlanDescription] => Savings Champ-12 [PlanId] => 59 [PlanIssueDate] => 12/10/2012 [PlanMonthlyFee] => 0 [PlanName] => PN1060 [PlanRate] => 9.8 [PlanRenewablePercent] => 7.2 [PlanTerm] => 12 [PriorityMoveIn] => 36 [ProviderDisplayName] => CenterPoint Energy [ProviderId] => 21 [ProviderInternalName] => CNP_COAST [RateId] => 161458 [RegularMoveIn] => 16 [TDSPPassThrough] => 0.03791 [TOCUrl] => http://www.championenergyservices.com/register/termsandconditions.asp?rateid=161458 [YRACUrl] => http://www.championenergyservices.com/register/\affiliatefiles\YRAC.PDF [provider] => ces [ProductType] => Fixed [Rep] => Champion Energy Services [Zone] => 77479 ) [2] => Array ( [AveragePrice] => 10.4311743 [EFLUrl] => http://www.championenergyservices.com/register/EFL_API.asp?rateid=161459 [EarlyTerminationFee] => 150 [HurricaneRecovery] => 0.132 [MeterSurcharge] => 3.05 [OffCycle] => 5 [PUCAssessment] => 0.00167 [PlanDescription] => Green Power-12 [PlanId] => 60 [PlanIssueDate] => 12/10/2012 [PlanMonthlyFee] => 0 [PlanName] => PN1061 [PlanRate] => 10.1 [PlanRenewablePercent] => 100 [PlanTerm] => 12 [PriorityMoveIn] => 36 [ProviderDisplayName] => CenterPoint Energy [ProviderId] => 21 [ProviderInternalName] => CNP_COAST [RateId] => 161459 [RegularMoveIn] => 16 [TDSPPassThrough] => 0.03791 [TOCUrl] => http://www.championenergyservices.com/register/termsandconditions.asp?rateid=161459 [YRACUrl] => http://www.championenergyservices.com/register/\affiliatefiles\YRAC.PDF [provider] => ces [ProductType] => Fixed [Rep] => Champion Energy Services [Zone] => 77479 ) ) Array 2 = pr($temp_val); Array ( [0] => Array ( [id] => 6 [PlanId] => 60 [PlanName] => Bounce 12 + A/C Protection [PlanDescription] => Bounce 12 + A/C Protection - CNP [PlanTerm] => 12 [PlanRate] => [RateId] => [PlanIssueDate] => [PlanMonthlyFee] => [EarlyTerminationFee] => 200.00000 [AveragePrice] => 12.00000 [HurricaneRecovery] => [PlanRenewablePercent] => [ProviderDisplayName] => [ProviderId] => 1 [provider] => bounce [ProductZoneId] => 353 [Zone] => 77479 [ProviderInternalName] => [RegularMoveIn] => [PriorityMoveIn] => [OffCycle] => [TDSPPassThrough] => [PUCAssessment] => [EFLUrl] => [EFLLinkUrl] => http://www.bounceenergy.com/efls/bounce12.pdf [TOCUrl] => [TOCLUrl] => http://www.bounceenergy.com/terms-of-service-fixed.pdf [YRACUrl] => [YRACLUrl] => http://www.bounceenergy.com/yraac.pdf [REP_Name] => [REP_PUCT] => [customer_service_email] => [toll_free_number] => [status] => active [created] => 2012-12-14 12:40:05 [modified] => 2012-12-14 ) [1] => Array ( [id] => 18 [PlanId] => 17 [PlanName] => Online Only - 12 [PlanDescription] => Online Only - 12 [PlanTerm] => 12 [PlanRate] => [RateId] => 386 [PlanIssueDate] => [PlanMonthlyFee] => 100.00000 [EarlyTerminationFee] => 175.00000 [AveragePrice] => 10.00000 [HurricaneRecovery] => [PlanRenewablePercent] => [ProviderDisplayName] => [ProviderId] => 2 [provider] => fulcrum [ProductZoneId] => [Zone] => 77479 [ProviderInternalName] => [RegularMoveIn] => [PriorityMoveIn] => [OffCycle] => [TDSPPassThrough] => [PUCAssessment] => [EFLUrl] => [EFLLinkUrl] => [TOCUrl] => [TOCLUrl] => [YRACUrl] => [YRACLUrl] => [REP_Name] => [REP_PUCT] => [customer_service_email] => [toll_free_number] => [status] => active [created] => 2012-12-14 12:40:15 [modified] => 2012-12-14 ) ) I want to compare this two array and if any key value is different i want to take it an different array.. $result_val= array_diff_assoc($plan_data, $temp_val); Please help me out !!

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• Problem with basic program using Boost Threads in c++

  - by Eternal Learner

  I have a simple program which creates and executes as thread using boost threads in c++. #include<boost/thread/thread.hpp> #include<iostream> void hello() { std::cout<<"Hello, i am a thread"<<std::endl; } int main() { boost::thread th1(&hello); th1.join(); } The compiler throws an error against the th1.join() line. It says " Multiple markers at this line - undefined reference to `boost::thread::join()' - undefined reference to `boost::thread::~thread()' "

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• need help to construct query

  - by Learner

  i have the following result and i would like to construct the select query from the following result in java, Please help me how to go about , tablename columnname size order employee name 25 1 employee sex 25 2 employee contactNumber 50 3 employee salary 25 4 address street 25 5 address country 25 6 from this i would like to construct query like select T1.name, T1.sex,T1.contactNumber, T1.salaryT2.street, T2.contry from tablename1[employee] T1, tablename2[address] T2 how to construt the above query in java, here table name can be N also the columname can be also N. Please help me to achieve the above. Thanks and Regards

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• In Java how instance of and type cast(i.e (ClassName)) works on proxy object ?

  - by learner

  Java generates a proxy class for a given interface and provides the instance of the proxy class. But when we type cast the proxy object to our specific Object, how java handles this internally? Is this treated as special scenario? For example I have class 'OriginalClass' and it implements 'OriginalInterface', when I create proxy object by passing 'OriginalInterface' interface java created proxy class 'ProxyClass' using methods in the provided interface and provides object of this class(i.e ProxyClass). If my understanding is correct then can you please answer following queries 1) When I type cast object of ProxyClass to my class OriginalClass this works, but how java is allowing this? Same in case of instace of? 2) As my knowledge java creates a proxy class only with the methods, but what happen when I try to access attributes on this object? 3) Only interface methods are getting implemented in Proxy, but what happens when I try to access a method which not in interface and only mentioned in the class? Thanks, Student

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• How to set multiple cakephp projects on local computer?

  - by learner.php

  Hi, I am new to Cakephp, and very excited to learn it. I read the docs, downloaded the files, place it on my www root folder. (I am using WAMP). My question is, can I download 1 cakephp and do for multiple projects, for example I put my cakephp at %webroot%, so my to call my projects: [http://localhost/cake/project1] [http://localhost/cake/project2] and so on...

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• javax.servlet.ServletException: WriteText method cannot write null text

  - by Learner

  I have created a Web application using JSF+Icefaces+Richfaces+Primefaces.It is working great while I run it from eclipse as a project but When I created its WAR file and deployed in GlassFish Server then while rendering a page it is throwing this exception javax.servlet.ServletException: WriteText method cannot write null text I searched but didn't get any good solution.A quick help is highly appreciated Edit:1 I think this would be the relevant part for this <li class="page_item" id="liMasterSearch"> <!-- this is for hide (<li class="page_item hide" id="liMasterSearch"> applied to every class) --> <h:commandLink value="Search" action="#{masterRenderBean.showSimpleSearch}"></h:commandLink> </li> <li class="page_item" id="liAdvanceSearch"> <h:commandLink value="Advance Search" action="#{masterRenderBean.showADVS}"></h:commandLink> </li> Here you can see two links (1) Search and (2) Advance Search when I click on Search , It shows search page (By rendering-Actually I have included all pages in masterpage and render them on commandlink functions) <h:panelGroup rendered="#{not masterRenderBean.simpleSearch}"> <ui:include src="../../WebPages/SearchPages/MasterSearch.xhtml"></ui:include> </h:panelGroup> But When I click on Advance Search link (on which this part should render) <h:panelGroup rendered="#{not masterRenderBean.advs}"> <ui:include src="../../WebPages/SearchPages/PersonalAdvanceSearch.xhtml"/> </h:panelGroup> The browser show the above exception. NOTE: Keep in mind that this problem is occurring in deploying.It is not coming in actual application when I run it from eclipse from code EDIT:2 I found in server logs that this exception is coming due to acefaces and this portion of code <ace:autoCompleteEntry id="txtplaceofbirth" rows="10" autocomplete="false" minChars="2" width="150" value="#{inputPersonal.selectedplcofBirth}" filterMatchMode="none" valueChangeListener="#{inputPersonal.valueChangeEventCity}"> <f:selectItems value="#{inputPersonal.cities}"/> </ace:autoCompleteEntry></h:outputFormat> is messing up.Any idea Why this is hapening? Edit #3: Here is the full tack trace of exception [#|2012-11-19T09:55:48.026+0500|SEVERE|glassfish3.1.2|javax.enterprise.system.std.com.sun.enterprise.server.logging|_ThreadID=53;_ThreadName=Thread-2;|java.lang.NullPointerException: WriteText method cannot write null text at org.icefaces.impl.context.DOMResponseWriter.writeText(DOMResponseWriter.java:314) at org.icefaces.impl.context.DOMResponseWriter.writeText(DOMResponseWriter.java:340) at com.sun.faces.renderkit.html_basic.OutputMessageRenderer.encodeEnd(OutputMessageRenderer.java:163) at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:875) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1764) at javax.faces.render.Renderer.encodeChildren(Renderer.java:168) at org.icefaces.impl.renderkit.RendererWrapper.encodeChildren(RendererWrapper.java:49) at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:845) at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:304) at com.sun.faces.renderkit.html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:105) at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:845) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1757) at javax.faces.render.Renderer.encodeChildren(Renderer.java:168) at org.icefaces.impl.renderkit.RendererWrapper.encodeChildren(RendererWrapper.java:49) at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:845) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1757) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1760) at org.icefaces.impl.context.DOMPartialViewContext.processPartial(DOMPartialViewContext.java:142) at javax.faces.component.UIViewRoot.encodeChildren(UIViewRoot.java:981) at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1757) at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:391) at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:131) at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:288) at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:121) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:594) at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1542) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161) at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231) at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317) at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195) at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:849) at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:746) at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1045) at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:228) at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104) at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90) at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79) at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54) at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59) at com.sun.grizzly.ContextTask.run(ContextTask.java:71) at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532) at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513) at java.lang.Thread.run(Thread.java:722) |#]

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• Fatal error: Cannot use string offset as an array

  - by learner

  Array ( [0] = Array ( [auth_id] = 1 [auth_section] = Client Data Base [auth_parent_id] = 0 [auth_admin] = 1 [sub] = Array ( [0] = Array ( [auth_id] = 2 [auth_section] = Client Contact [auth_parent_id] = 1 [auth_admin] = 1 ) ) ) [1] => Array ( [auth_id] => 6 [auth_section] => All Back Grounds [auth_parent_id] => 0 [auth_admin] => ,4 [sub] => Array ( [0] => Array ( [auth_id] => 7 [auth_section] => Edit Custom [auth_parent_id] => 6 [auth_admin] => 1 ) ) ) [2] => Array ( [auth_id] => 20 [auth_section] => Order Mail [auth_parent_id] => 0 [auth_admin] => 1 [sub] => ) } When I process the sub inner array it shows this error how can I avoid that :)

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• How to create thumbnail images with white 3px border using PHP?

  - by learner

  How to create thumbnail images with white 3px border using PHP? any body have the scripts please help me :(

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• Please provide scenarios/conditions those fail during deserialization when a class & serialized obje

  - by learner

  Please provide scenarios/conditions those fail during deserialization when a class & serialized object have same serialVersionUID? I'm looking scenarios like following 1) If a data type of an instance variable is changed then deserialization will fail Could you please provide all such scenarios. I couldn't find such scenarios list anywhere in the internet. Thanks

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• What is Class Descriptor?

  - by learner

  What is Class Descriptor? Is it a Class object of a particular class?

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• How to find the length of a parameter pack ?

  - by Eternal Learner

  Hi All, Suppose I have a variadic template function like template<typename... Args> unsigned length(Args... args); How do I find the length of the parameter list ?

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• O(log n) algorithm for merging lists and computing rank?

  - by Eternal Learner

  Given two sorted lists, each containing n real numbers, is there a O(log?n) time algorithm to compute the element of rank i (where i coresponds to index in increasing order) in the union of the two lists, assuming the elements of the two lists are distinct? I can think of using a Merge procedure to merge the 2 lists and then find the A[i] element in constant time. But the Merge would take O(n) time. How do we solve it in O(log n) time?

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• Problem with a recursive function to find sqrt of a number

  - by Eternal Learner

  Below is a simple program which computes sqrt of a number using Bisection. While executing this with a call like sqrtr(4,1,4) in goes into an endless recursion . I am unable to figure out why this is happening. Below is the function : double sqrtr(double N , double Low ,double High ) { double value = 0.00; double mid = (Low + High + 1)/2; if(Low == High) { value = High; } else if (N < mid * mid ) { value = sqrtr(N,Low,mid-1) ; } else if(N >= mid * mid) { value = sqrtr(N,mid,High) ; } return value; }

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• Query to find all bars that sell three different beers at the same price

  - by Eternal Learner

  Query to find "All bars that sell three different beers at the same price?" My Tables are Sells(bar,beer,price) - bar - foreign Key.. Bars(name,addr) - name primary key. I thought of something like this but that dosent seem to work ... Select A.bar As bar , B.bar as bar From Sells AS A, Sells AS B Where A.bar = B.bar and A.beer <> B.beer Group By(A.beer) Having Count(Distinct A.beer) >= 2 Is this the correct SQL query ?

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