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  • What is the result of X(X,X)? [closed]

    - by Sorush Rabiee
    A friend who studies pure mathematics ask me to think about the following problem. Suppose that there is an algorithm named X that has 2 inputs: A and a_1...a_n, where 'A' stands for an arbitary algorithm and 'a_1..a_n' are inputs of A. X receives A and its inputs and returns true if A with a_1..a_n could be terminated, and false if A with a_1..a_n inputs fall into an infinite loop (never ends). Like this: A(n): while(n<5): write "I'm immortal!" and the result of X(A,6) is true and X(A,2) is false. So what is the result of X(X,X)? Also, do you know who was the first to introduce this problem?

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  • Object drag delay issue

    - by Johnny Darvall
    I have this code that drags stuff around perfectly in IE - however in firefox the onmousedown-drag of the object does not immediately drag but shows the no-entry cursor and then after onmouseup the object drags around freely. The object does stop draging on the next onmouseup. The object should only drag in the onmousdown state, while the onmousup call should cancel the drag by making j_OK=0. I think it may have something to do with the image inside... the object: <em style=position:absolute;left:0;top:0;width:32;height:32;display:block> < img src=abc.gif onmousedown=P_MV(this.parentNode) style=position:absolute;left:0;top:0;width:inherit> </em> function P_MV(t) { p_E=t j_oy=parseInt(p_E.style.top) j_ox=parseInt(p_E.style.left) j_OK=1 document.onselectstart=function(){return false} document.onmousemove=P_MVy } function P_MVy(e) { if(j_OK) { p_E.style.top=(j_FF?e.clientY:event.clientY)-j_y+j_oy p_E.style.left=(j_FF?e.clientX:event.clientX)-j_x+j_ox } return false }

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  • Refresh page isnt working in asp.net using treeview

    - by Greg
    Hi, I am trying to refresh an asp.net page using this command: <meta http-equiv="Refresh" content="10"/> On that page I have 2 treeviews. The refresh works ok when I just open the page, but when I click on one of the treeviews and expand it, the refresh stopps working and the page isnt being refreshed. Any ideas why this can happen? Is there any connection to the treeview being expanded? Here is the full code of the page: public partial class Results : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } // Function that moves reviewed yellow card to reviewed tree protected void ycActiveTree_SelectedNodeChanged(object sender, EventArgs e) { ycActiveTree.SelectedNode.Text = "Move To Active"; ycReviewedTree.PopulateNodesFromClient = false; ycReviewedTree.Nodes[ycReviewedTree.Nodes.Count - 1].ChildNodes.Add(ycActiveTree.SelectedNode.Parent); Application["reviewedTree"] = new ArrayList(); int count = ((ArrayList)Application["activeTree"]).Count; // Move all the nodes from activeTree application to reviewedTree application for (int i = 0; Application["activeTree"] != null && i < count; i++) { ((ArrayList)Application["reviewedTree"]).Add(((ArrayList)Application["activeTree"])[i]); ((ArrayList)Application["activeTree"]).RemoveAt(0); } } protected void ycActiveTree_TreeNodePopulate(object sender, TreeNodeEventArgs e) { if (Application["idList"] != null && e.Node.Depth == 0) { string[] words = ((String)Application["idList"]).Split(' '); // Yellow Card details TreeNode child = new TreeNode(""); // Go over all the yellow card details and populate the treeview for (int i = 1; i < words.Length; i++) { child.SelectAction = TreeNodeSelectAction.None; // Same yellow card if (words[i] != "*") { // End of details and start of point ip's if (words[i] == "$") { // Add the yellow card node TreeNode yellowCardNode = new TreeNode(child.Text); yellowCardNode.SelectAction = TreeNodeSelectAction.Expand; e.Node.ChildNodes.Add(yellowCardNode); child.Text = ""; } // yellow card details else { child.Text = child.Text + words[i] + " "; } } // End of yellow card else { child.PopulateOnDemand = false; child.SelectAction = TreeNodeSelectAction.None; // Populate the yellow card node e.Node.ChildNodes[e.Node.ChildNodes.Count - 1].ChildNodes.Add(child); TreeNode moveChild = new TreeNode("Move To Reviewed"); moveChild.PopulateOnDemand = false; moveChild.SelectAction = TreeNodeSelectAction.Select; e.Node.ChildNodes[e.Node.ChildNodes.Count - 1].ChildNodes.Add(moveChild); child = new TreeNode(""); Application["activeTree"] = new ArrayList(); ((ArrayList)Application["activeTree"]).Add(e.Node.ChildNodes[e.Node.ChildNodes.Count - 1]); } } } // If there arent new yellow cards else if (Application["activeTree"] != null) { // Populate the active tree for (int i = 0; i < ((ArrayList)Application["activeTree"]).Count; i++) { e.Node.ChildNodes.Add((TreeNode)((ArrayList)Application["activeTree"])[i]); } } // If there were new yellow cards and nodes that moved from reviewed tree to active tree if (Application["idList"] != null && Application["activeTree"] != null && e.Node.ChildNodes.Count != ((ArrayList)Application["activeTree"]).Count) { for (int i = e.Node.ChildNodes.Count; i < ((ArrayList)Application["activeTree"]).Count; i++) { e.Node.ChildNodes.Add((TreeNode)((ArrayList)Application["activeTree"])[i]); } } // Nullify the yellow card id's Application["idList"] = null; } protected void ycReviewedTree_SelectedNodeChanged(object sender, EventArgs e) { ycActiveTree.PopulateNodesFromClient = false; ycReviewedTree.SelectedNode.Text = "Move To Reviewed"; ycActiveTree.Nodes[ycActiveTree.Nodes.Count - 1].ChildNodes.Add(ycReviewedTree.SelectedNode.Parent); int count = ((ArrayList)Application["reviewedTree"]).Count; // Move all the nodes from reviewedTree application to activeTree application for (int i = 0; Application["reviewedTree"] != null && i < count; i++) { ((ArrayList)Application["activeTree"]).Add(((ArrayList)Application["reviewedTree"])[i]); ((ArrayList)Application["reviewedTree"]).RemoveAt(0); } } protected void ycReviewedTree_TreeNodePopulate(object sender, TreeNodeEventArgs e) { if (Application["reviewedTree"] != null) { // Populate the reviewed tree for (int i = 0; i < ((ArrayList)Application["reviewedTree"]).Count; i++) { e.Node.ChildNodes.Add((TreeNode)((ArrayList)Application["reviewedTree"])[i]); } } } } Thanks, Greg

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  • How do you change the subdocument location in a Word 2007 master document programmatically?

    - by boost
    We have had the unenviable happen: various master documents refer to sub-documents that are no longer where they used to be due to a directory renaming. Is there a programmatic way of tweaking the HYPERLINK field without losing the master/sub-document relationship? I've got this far ... Sub FixyaLinks() Dim s 'As String Dim i As Long Dim bTrackRevFlag As Boolean Dim bShowRevFlag As Boolean bTrackRevFlag = ActiveDocument.TrackRevisions bShowRevFlag = ActiveDocument.ShowRevisions ActiveDocument.TrackRevisions = False ActiveDocument.ShowRevisions = False For i = 1 To ActiveDocument.Fields.Count s = ActiveDocument.Fields.Item(i).Code.Text If InStr(s, "CURRICULUM\\NEW") Then s = Replace(s, "NEW Foundation Units-in developing", "Foundation Programme Units") ActiveDocument.Fields.Item(i).Code.Text = s End If Next ActiveDocument.TrackRevisions = bTrackRevFlag ActiveDocument.ShowRevisions = bShowRevFlag End Sub It bombs on ActiveDocument.Fields.Item(i).Code.Text = s, with an error 5686 ("The operation cannot be completed because the Track Changes option in the master document does not match the option the the subdocument. Make the Track Changes option the same in the master document and subdocument.") However, I'm not entirely sure what that means. Ideas anyone?

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  • Invite friends from facebook on my application using facebook api

    - by Seema
    Hello all, I create a application which allow user integration through facebook(connect with facebook).when user sign-in in application , i want to show all facebook friends of sign-in user for invite them to join my application. In current i am using multi friend selector for invite friends. <fb:serverfbml width="615"> <script type="text/fbml"> <fb:request-form action="action url" method="POST" invite="true" type="invite" content=" my message"> <fb:multi-friend-selector showborder="true" bypass="cancel" cols=3 email_invite="false" import_external_friends="false" actiontext="Invite your friend from facebook"/> </fb:request-form> </script> </fb:serverfbml> I want to customize mult friend selector 1 Can change css and show all friend in a single column? 2 can i show disable the friends whose are already connect with my application? please give your suggestion or if any other option for this. Thanks

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  • How to launch a Windows service network process to listen to a port on a localhost socket that is vi

    - by rwired
    Here's the code (in a standard TService in Delphi): const ProcessExe = 'MyNetApp.exe'; function RunService: Boolean; var StartInfo : TStartupInfo; ProcInfo : TProcessInformation; CreateOK : Boolean; begin CreateOK := false; FillChar(StartInfo,SizeOf(TStartupInfo),#0); FillChar(ProcInfo,SizeOf(TProcessInformation),#0); StartInfo.cb := SizeOf(TStartupInfo); CreateOK := CreateProcess(nil, PChar(ProcessEXE),nil,nil,False, CREATE_NEW_PROCESS_GROUP+NORMAL_PRIORITY_CLASS, nil, PChar(InstallDir), StartInfo, ProcInfo); CloseHandle(ProcInfo.hProcess); CloseHandle(ProcInfo.hThread); Result := CreateOK; end; procedure TServicel.ServiceExecute(Sender: TService); const IntervalsBetweenRuns = 4; //no of IntTimes between checks IntTime = 250; //ms var Count: SmallInt; begin Count := IntervalsBetweenRuns; //first time run immediately while not Terminated do begin Inc(Count); if Count >= IntervalsBetweenRuns then begin Count := 0; //We check to see if the process is running, //if not we run it. That's all there is to it. //if ProcessEXE crashes, this service host will just rerun it if processExists(ProcessEXE)=0 then RunService; end; Sleep(IntTime); ServiceThread.ProcessRequests(False); end; end; MyNetApp.exe is a SOCKS5 proxy listening on port 9870. Users configure their browser to this proxy which acts as a secure-tunnel/anonymizer. All works perfectly fine on 2000/XP/2003, but on Vista/Win7 with UAC the service runs in Session0 under LocalSystem and port 9870 doesn't show up in netstat for the logged-in user or Administrator. Seems UAC is getting in my way. Is there something I can do with the SECURITY_ATTRIBUTES or CreateProcess, or is there something I can do with CreateProcessAsUser or impersonation to ensure that a network socket on a service is available to logged-in users on the system (note, this app is for mass deployment, I don't have access to user credentials, and require the user elevate their privileges to install a service on Vista/Win7)

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  • Button in a JMenuBar

    - by Kurru
    Hi I was trying to make a JMenu behave like a JButton but I'm having some problems and hopefully someone here can help! I've added a MenuListener to the JMenu item with this but I cant get the popup menu/focus to leave to enable me to properly click the JMenu repeated times to trigger this function and i was hoping someone could tell me what i'm doing wrong. Thanks. public void menuSelected(MenuEvent e) { ... // do stuff here code JMenu source = (JMenu)e.getSource(); source.setSelected(false); source.setPopupMenuVisible(false); }

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  • jQuery Change Html Content

    - by Mircea
    Hi, I have the following HTML5 content: <section contenteditable="true" id="editable" class="ui-selectee ui-selected"> <span>something</span> <span>something</span> <span>something</span> </selection> I have a toggle function that turns on edit mode. I want to make the contenteditable="true" or contenteditable="false" on that toggle function. I've it would be easy if I would have to change a class or ID. Ive tryed to .html the #edit or append but I was unable to. Any tips on changing contenteditable="true" to contenteditable="false" ? Thanx

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  • How to show error message with jquery tooltip?

    - by bala3569
    I am validating my controls in a form... if a control is empty i would like to show a jquery tooltip with that error msg.. Here is what i am doing... if (document.getElementById("ctl00_ContentPlaceHolder1_ListDiscipline") .selectedIndex == -1) { document.getElementById("ctl00_ContentPlaceHolder1_ErrorMsg").innerHTML = "please select your Discipline"; document.getElementById("ctl00_ContentPlaceHolder1_ListDiscipline").focus(); return false; } and i would like to do like this, if (document.getElementById("ctl00_ContentPlaceHolder1_ListDiscipline") .selectedIndex == -1) { // show tooltip besides the control with the error message... document.getElementById("ctl00_ContentPlaceHolder1_ListDiscipline").focus(); return false; } Any suggestion...

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  • Does Hibernate's GenericGenerator cause update and saveOrUpdate to always insert instead of update?

    - by Derek Mahar
    When using GenericGenerator to generate unique identifiers, do Hibernate session methods update() and saveOrUpdate() always insert instead of update table rows, even when the given object has an existing identifier (where the identifier is also the table primary key)? Is this the correct behaviour? public class User { private String id; private String name; public User(String id, String name) { this.id = id; this.name = name; } @GenericGenerator(name="generator", strategy="guid")@Id @GeneratedValue(generator="generator") @Column(name="USER_ID", unique=true, nullable=false) public String getId() { return this.id; } public void setId(String id) { this.id = id; } @Column(name="USER_NAME", nullable=false, length=20) public String getUserName() { return this.userName; } public void setUserName(String userName) { this.userName = userName; } } class UserDao extends AbstractDaoHibernate { public void updateUser(final User user) { HibernateTemplate ht = getHibernateTemplate(); ht.saveOrUpdate(user); } }

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  • JSF 2 -- Composite component with optional listener attribute on f:ajax

    - by Dave Maple
    I have a composite component that looks something like this: <!DOCTYPE html> <html xmlns:h="http://java.sun.com/jsf/html" xmlns:f="http://java.sun.com/jsf/core" xmlns:dm="http://davemaple.com/dm-taglib" xmlns:rich="http://richfaces.org/rich" xmlns:cc="http://java.sun.com/jsf/composite" xmlns:fn="http://java.sun.com/jsp/jstl/functions" xmlns:ui="http://java.sun.com/jsf/facelets" xmlns:a4j="http://richfaces.org/a4j"> <cc:interface> <cc:attribute name="styleClass" /> <cc:attribute name="textBoxStyleClass" /> <cc:attribute name="inputTextId" /> <cc:attribute name="labelText" /> <cc:attribute name="tabindex" /> <cc:attribute name="required" default="false" /> <cc:attribute name="requiredMessage" /> <cc:attribute name="validatorId" /> <cc:attribute name="converterId" /> <cc:attribute name="title"/> <cc:attribute name="style"/> <cc:attribute name="unicodeSupport" default="false"/> <cc:attribute name="tooltip" default="false"/> <cc:attribute name="tooltipText" default=""/> <cc:attribute name="tooltipText" default=""/> <cc:attribute name="onfail" default=""/> <cc:attribute name="onpass" default=""/> </cc:interface> <cc:implementation> <ui:param name="converterId" value="#{! empty cc.attrs.converterId ? cc.attrs.converterId : 'universalConverter'}" /> <ui:param name="validatorId" value="#{! empty cc.attrs.validatorId ? cc.attrs.validatorId : 'universalValidator'}" /> <ui:param name="component" value="#{formFieldBean.getComponent(cc.attrs.inputTextId)}" /> <ui:param name="componentValid" value="#{((facesContext.maximumSeverity == null and empty component.valid) or component.valid) ? true : false}" /> <ui:param name="requiredMessage" value="#{! empty cc.attrs.requiredMessage ? cc.attrs.requiredMessage : msg['validation.generic.requiredMessage']}" /> <ui:param name="clientIdEscaped" value="#{fn:replace(cc.clientId, ':', '\\\\\\\\:')}" /> <h:panelGroup layout="block" id="#{cc.attrs.inputTextId}ValidPanel" style="display:none;"> <input type="hidden" id="#{cc.attrs.inputTextId}Valid" value="#{componentValid}" /> </h:panelGroup> <dm:outputLabel for="#{cc.clientId}:#{cc.attrs.inputTextId}" id="#{cc.attrs.inputTextId}Label">#{cc.attrs.labelText}</dm:outputLabel> <dm:inputText styleClass="#{cc.attrs.textBoxStyleClass}" tabindex="#{cc.attrs.tabindex}" id="#{cc.attrs.inputTextId}" required="#{cc.attrs.required}" requiredMessage="#{requiredMessage}" title="#{cc.attrs.title}" unicodeSupport="#{cc.attrs.unicodeSupport}"> <f:validator validatorId="#{validatorId}" /> <f:converter converterId="#{converterId}" /> <cc:insertChildren /> <f:ajax event="blur" execute="@this" render="#{cc.attrs.inputTextId}ValidPanel #{cc.attrs.inputTextId}Msg" onevent="on#{cc.attrs.inputTextId}Event" /> </dm:inputText> <rich:message for="#{cc.clientId}:#{cc.attrs.inputTextId}" id="#{cc.attrs.inputTextId}Msg" style="display: none;" /> <script> function on#{cc.attrs.inputTextId}Event(e) { if(e.status == 'success') { $('##{clientIdEscaped}\\:#{cc.attrs.inputTextId}').trigger($('##{cc.attrs.inputTextId}Valid').val()=='true'?'pass':'fail'); } } $('##{clientIdEscaped}\\:#{cc.attrs.inputTextId}').bind('fail', function() { $('##{clientIdEscaped}\\:#{cc.attrs.inputTextId}, ##{clientIdEscaped}\\:#{cc.attrs.inputTextId}Label, ##{cc.attrs.inputTextId}Msg, ##{cc.id}Msg').addClass('error'); $('##{cc.id}Msg').html($('##{clientIdEscaped}\\:#{cc.attrs.inputTextId}Msg').html()); #{cc.attrs.onfail} }).bind('pass', function() { $('##{clientIdEscaped}\\:#{cc.attrs.inputTextId}, ##{clientIdEscaped}\\:#{cc.attrs.inputTextId}Label, ##{cc.attrs.inputTextId}Msg, ##{cc.id}Msg').removeClass('error'); $('##{cc.id}Msg').html($('##{clientIdEscaped}\\:#{cc.attrs.inputTextId}Msg').html()); #{cc.attrs.onpass} }); </script> <a4j:region rendered="#{facesContext.maximumSeverity != null and !componentValid}"> <script> $(document).ready(function() { $('##{clientIdEscaped}\\:#{cc.attrs.inputTextId}').trigger('fail'); }); </script> </a4j:region> </cc:implementation> </html> I'd like to be able to add an optional "listener" attribute which if defined would add an event listener to my f:ajax but I'm having trouble figuring out how to accomplish this. Any help would be appreciated.

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  • django: _init_ def work but does not update to class in django form

    - by tgngo
    Hi expert there, this is my form: class IPTrackerSearchForm(forms.Form): keyword = forms.CharField(max_length=100, widget=forms.TextInput(attrs={'size':'50'})) search_in = forms.ChoiceField(required=False, choices=ANY_CHOICE + MODULE_SEARCH_IN_CHOICES) product = forms.CharField(max_length=64,widget=forms.TextInput(attrs={'size':'50'})) family = forms.CharField(max_length=64,widget=forms.TextInput(attrs={'size':'50'})) temp_result = Merlin.objects.values('build').distinct() result = [(value['build'], value['build']) for value in temp_result] build = forms.ChoiceField(choices=ANY_CHOICE + result) circuit_name = forms.CharField(max_length=256,widget=forms.TextInput(attrs={'size':'50'})) parameterization = forms.CharField(max_length=1024,widget=forms.TextInput(attrs={'size':'50'})) metric = forms.CharField(max_length=64,widget=forms.TextInput(attrs={'size':'50'})) show_in_one_page = forms.BooleanField(required=False, label="Show filtered result in one page", widget=forms.CheckboxInput(attrs={'class':'checkbox'})) def __init__(self, *args, **kwargs): super(IPTrackerSearchForm, self).__init__(*args, **kwargs) temp_result = Merlin.objects.values('build').distinct() self.result = [(value['build'], value['build']) for value in temp_result] self.build = forms.ChoiceField(choices=ANY_CHOICE + self.result) print self.result With the purpose that, each time I refresh the webpage, when have new record to "build" column in database. It should update to the drop down box "build" here but It never update unless restart the server. I use print and see that ini detect new recrd but can notrefect to build in Class. Many thanks

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  • CakePHP and jQuery - Unobtrusive actions

    - by fortysixandtwo
    I'm trying to make an unobtrusive action for deleting bookmarks in CakePHP. Allthough it's working just fine, I suspect there must be a better way to do this. Could someone please point me in the right direction? function delete($id = null) { $ok = $this->Bookmark->delete($id); if($this->RequestHandler->isAjax()) { $this->autoRender = false; $this->autoLayout = false; $response = array('status' => 0, 'message' => 'Could not delete bookmark'); if($ok) { $response = array('status' => 1, 'message' => 'Bookmark deleted'); } $this->header('Content-Type: application/json'); echo json_encode($response); exit(); } // Request isn't AJAX, redirect. $this->redirect(array('action' => 'index')); }

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  • how to omit extra bits in a file?

    - by thinthinyu
    I want to omit extra bit in txt file.eg ....ÿ 0111111110111101100011011010010001 in this string we want to omit extra bit "ÿ " which is appeared when we save a binary string. Save fun is as follow. please help me. void LFSR_ECDlg::Onsave() { this-UpdateData(); CFile bitstream; char strFilter[] = { "Stream Records (*.mpl)|*.mpl| (*.pis)|*.pis|All Files (*.*)|*.*||" }; CFileDialog FileDlg(FALSE, ".mpl", NULL, 0, strFilter); if( FileDlg.DoModal() == IDOK ) { if( bitstream.Open(FileDlg.GetFileName(), CFile::modeCreate | CFile::modeWrite) == FALSE ) return; CArchive ar(&bitstream, CArchive::store); CString txt; txt=""; txt.Format("%s",m_B);//by ANO AfxMessageBox (txt);//by ANO txt=m_B;//by ANO ar <<txt;//by ANO ar.Close(); } else return; bitstream.Close();

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  • ASP.Net Web Forms LoginStatus Multiple LoginURL - suggestions?

    - by TGuimond
    Hi Guys, I am developing a multi-lingual website. I am determining the requested language via a querystring variable eg: http://mydomain.com/default.aspx?lang=en I am using two <asp:LoginStatus /> controls in my masterpage. My web.config file is set up like this for forms authentication. <authentication mode="Forms"> <forms loginUrl="~/login.aspx" protection="All" timeout="30" name=".ASPXAUTH" path="/" requireSSL="false" slidingExpiration="true" defaultUrl="default.aspx" cookieless="UseDeviceProfile" enableCrossAppRedirects="false"/> </authentication> Currently when you click on a <asp:LoginStatus /> you will be redirected to my login page and the url will look something like this: http://mydomain.com/login.aspx?ReturnUrl=%2fdefault.aspx%3flang%3den What solutions are available to me so that I can append my lang variable to my login.aspx? depending on which language is currently active?

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  • How can I tag a user in a photo using the Facebook Graph API?

    - by fr6
    I tried: $args = array( 'access_token' => $access_token, 'id' => $uid ); $url = "https://graph.facebook.com/{$idPhoto}/tags"; $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_HEADER, false); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_POST, true); curl_setopt($ch, CURLOPT_POSTFIELDS, $args); curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2); $data = curl_exec($ch); It has returned me: {"error":{"type":"QueryParseException","message":"Unknown path components: \/tags"}} It does not seem possible because its not in the Facebook documentation: http://developers.facebook.com/docs/api#publishing Can someone confirm me that it's not possible to tag a user in a recently uploaded photo?

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  • What is result of X(X,X)?

    - by Sorush Rabiee
    a friend who studies pure mathematics ask me to think about this problem: suppose that there is an algorithm named X that have 2 inputs: A and a_1...a_n, 'A' stands for an arbitary algorithm and 'a_1..a_n' are inputs of A. X recieves A and its inputs and returns true if A with a_1..a_n couold be terminated, and false if A with a_1..a_n inputs fall into infty loop (never ends). like this: A(n): while(n<5): write "I'm immortal!" and result of X(A,6) is true and X(A,2) is false. so what is the result of X(X,X)? ...and do you know who introduced this problem first time?

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  • C# Extend array type to overload operators

    - by Episodex
    I'd like to create my own class extending array of ints. Is that possible? What I need is array of ints that can be added by "+" operator to another array (each element added to each), and compared by "==", so it could (hopefully) be used as a key in dictionary. The thing is I don't want to implement whole IList interface to my new class, but only add those two operators to existing array class. I'm trying to do something like this: class MyArray : Array<int> But it's not working that way obviously ;). Sorry if I'm unclear but I'm searching solution for hours now... UPDATE: I tried something like this: class Zmienne : IEquatable<Zmienne> { public int[] x; public Zmienne(int ilosc) { x = new int[ilosc]; } public override bool Equals(object obj) { if (obj == null || GetType() != obj.GetType()) { return false; } return base.Equals((Zmienne)obj); } public bool Equals(Zmienne drugie) { if (x.Length != drugie.x.Length) return false; else { for (int i = 0; i < x.Length; i++) { if (x[i] != drugie.x[i]) return false; } } return true; } public override int GetHashCode() { int hash = x[0].GetHashCode(); for (int i = 1; i < x.Length; i++) hash = hash ^ x[i].GetHashCode(); return hash; } } Then use it like this: Zmienne tab1 = new Zmienne(2); Zmienne tab2 = new Zmienne(2); tab1.x[0] = 1; tab1.x[1] = 1; tab2.x[0] = 1; tab2.x[1] = 1; if (tab1 == tab2) Console.WriteLine("Works!"); And no effect. I'm not good with interfaces and overriding methods unfortunately :(. As for reason I'm trying to do it. I have some equations like: x1 + x2 = 0.45 x1 + x4 = 0.2 x2 + x4 = 0.11 There are a lot more of them, and I need to for example add first equation to second and search all others to find out if there is any that matches the combination of x'es resulting in that adding. Maybe I'm going in totally wrong direction?

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  • Can checkboxes be removed from a .NET WinForms ListView at runtime?

    - by James
    Is it possible to remove the checkboxes from a .NET WinForms ListView control at runtime? The following code appears to have no effect when '.Checkboxes' has initially been set to 'true' and the control has rendered onto a form with checkboxes available for each list view item: // C#: testListView.BeginUpdate(); testListView.Checkboxes = false; testListView.EndUpdate(); Is there a method that must be called to enact this change? What is the use of providing the .Checkboxes property when it defaults to 'false' and only has an effect if set to 'true'?

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  • java.util.BitSet -- set() doesn't work as expected

    - by dwhsix
    Am I missing something painfully obvious? Or does just nobody in the world actually use java.util.BitSet? The following test fails: @Test public void testBitSet() throws Exception { BitSet b = new BitSet(); b.set(0, true); b.set(1, false); assertEquals(2, b.length()); } It's really unclear to me why I don't end up with a BitSet of length 2 and the value 10. I peeked at the source for java.util.BitSet, and on casual inspection it seems to fail to make sufficient distinction between a bit that's been set false and a bit that has never been set to any value... (Note that explicitly setting the size of the BitSet in the constructor has no effect, e.g.: BitSet b = new BitSet(2);

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  • print customized result in prolog

    - by Allan Jiang
    I am working on a simple prolog program. Here is my problem. Say I already have a fact fruit(apple). I want the program take a input like this ?- input([what,is,apple]). and output apple is a fruit and for input like ?-input([is,apple,a,fruit]) instead of default print true or false, I want the program print some better phrase like yes and no Can someone help me with this? My code part is below: input(Text) :- phrase(sentence(S), Text), perform(S). %... sentence(query(Q)) --> query(Q). query(Query) --> ['is', Thing, 'a', Category], { Query =.. [Category, Thing]}. % here it will print true/false, is there a way in prolog to have it print yes/no, %like in other language: if(q){write("yes")}else{write("no")} perform(query(Q)) :- Q.

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  • Inserting newlines into a GtkTextView widget (GTK+ programming)

    - by Mark Roberts
    I've got a button which when clicked copies and appends the text from a GtkEntry widget into a GtkTextView widget. (This code is a modified version of an example found in the "The Text View Widget" chapter of Foundations of GTK+ Development.) I'm looking to insert a newline character before the text which gets copied and appended, such that each line of text will be on its own line in the GtkTextView widget. How would I do this? I'm brand new to GTK+. Here's the code sample: #include <gtk/gtk.h> typedef struct { GtkWidget *entry, *textview; } Widgets; static void insert_text (GtkButton*, Widgets*); int main (int argc, char *argv[]) { GtkWidget *window, *scrolled_win, *hbox, *vbox, *insert; Widgets *w = g_slice_new (Widgets); gtk_init (&argc, &argv); window = gtk_window_new (GTK_WINDOW_TOPLEVEL); gtk_window_set_title (GTK_WINDOW (window), "Text Iterators"); gtk_container_set_border_width (GTK_CONTAINER (window), 10); gtk_widget_set_size_request (window, -1, 200); w->textview = gtk_text_view_new (); w->entry = gtk_entry_new (); insert = gtk_button_new_with_label ("Insert Text"); g_signal_connect (G_OBJECT (insert), "clicked", G_CALLBACK (insert_text), (gpointer) w); scrolled_win = gtk_scrolled_window_new (NULL, NULL); gtk_container_add (GTK_CONTAINER (scrolled_win), w->textview); hbox = gtk_hbox_new (FALSE, 5); gtk_box_pack_start_defaults (GTK_BOX (hbox), w->entry); gtk_box_pack_start_defaults (GTK_BOX (hbox), insert); vbox = gtk_vbox_new (FALSE, 5); gtk_box_pack_start (GTK_BOX (vbox), scrolled_win, TRUE, TRUE, 0); gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, TRUE, 0); gtk_container_add (GTK_CONTAINER (window), vbox); gtk_widget_show_all (window); gtk_main(); return 0; } /* Insert the text from the GtkEntry into the GtkTextView. */ static void insert_text (GtkButton *button, Widgets *w) { GtkTextBuffer *buffer; GtkTextMark *mark; GtkTextIter iter; const gchar *text; buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (w->textview)); text = gtk_entry_get_text (GTK_ENTRY (w->entry)); mark = gtk_text_buffer_get_insert (buffer); gtk_text_buffer_get_iter_at_mark (buffer, &iter, mark); gtk_text_buffer_insert (buffer, &iter, text, -1); } You can compile this command (assuming the file is named file.c): gcc file.c -o file `pkg-config --cflags --libs gtk+-2.0` Thanks everybody!

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  • content show problem

    - by nonab
    I still fight with some jquery scripts:) With my first problem Jens Fahnenbruck helped me here: http://stackoverflow.com/questions/3021476/problem-with-hide-show-in-jquery thanks:) Now i added another fancy thing - jquery tabs Made a few modifications and it works like this: When you click on tab and it loads different main image for every tab. The problem is that i used $(document).ready(function() to handle those image changes. When i click any of 2x2 box images (on any tab) it will permanently change the image on the right and when i click on tabs it won't work like it did at the beginning. online example: http://rarelips.ayz.pl/testy/2/ code: <style type="text/css"> body { font: Arial, Helvetica, sans-serif normal 10px; margin: 0; padding: 0; } * {margin: 0; padding: 0;} img {border: none;} .container { height: 500px; width: 1000px; margin: -180px 0 0 -450px; top: 50%; left: 50%; position: absolute; } ul.thumb { float: left; list-style: none; margin: 0; padding: 10px; width: 360px; } ul.thumb li { margin: 0; padding: 5px; float: left; position: relative; width: 165px; height: 165px; } ul.thumb li img { width: 150px; height: 150px; border: 1px solid #ddd; padding: 10px; background: #f0f0f0; position: absolute; left: 0; top: 0; -ms-interpolation-mode: bicubic; } ul.thumb li img.hover { background:url(thumb_bg.png) no-repeat center center; border: none; } #main_view { float: left; padding: 9px 0; margin-left: -10px; } #main_view2 { float: left; padding: 9px 0; margin-left: -10px; } #main_view3 { float: left; padding: 9px 0; margin-left: -10px; } #main_view4 { float: left; padding: 9px 0; margin-left: -10px; } #wiecej { float: right; padding: 9px 0; margin-right: 20px; } .demo-show { width: 350px; margin: 1em .5em; } .demo-show h3 { margin: 0; padding: .25em; background: #bfcd93; border-top: 1px solid #386785; border-bottom: 1px solid #386785; } .demo-show div { padding: .5em .25em; } /* styl do tabek */ ul.tabs { margin: 0; padding: 0; float: left; list-style: none; height: 32px; /*--Set height of tabs--*/ border-bottom: 1px solid #999; border-left: 1px solid #999; width: 100%; } ul.tabs li { float: left; margin: 0; padding: 0; height: 31px; /*--Subtract 1px from the height of the unordered list--*/ line-height: 31px; /*--Vertically aligns the text within the tab--*/ border: 1px solid #999; border-left: none; margin-bottom: -1px; /*--Pull the list item down 1px--*/ overflow: hidden; position: relative; background: #e0e0e0; } ul.tabs li a { text-decoration: none; color: #000; display: block; font-size: 1.2em; padding: 0 20px; border: 1px solid #fff; /*--Gives the bevel look with a 1px white border inside the list item--*/ outline: none; } ul.tabs li a:hover { background: #ccc; } html ul.tabs li.active, html ul.tabs li.active a:hover { /*--Makes sure that the active tab does not listen to the hover properties--*/ background: #fff; border-bottom: 1px solid #fff; /*--Makes the active tab look like it's connected with its content--*/ } .tab_container { border: 1px solid #999; border-top: none; overflow: hidden; clear: both; float: left; width: 100%; background: #fff; } .tab_content { padding: 20px; font-size: 1.2em; } </style> <script type="text/javascript" src="index_pliki/jquery-latest.js"></script> <script type="text/javascript"> $(document).ready(function(){ //Larger thumbnail preview $("ul.thumb li").hover(function() { $(this).css({'z-index' : '10'}); $(this).find('img').addClass("hover").stop() .animate({ marginTop: '-110px', marginLeft: '-110px', top: '50%', left: '50%', width: '200px', height: '200px', padding: '5px' }, 200); } , function() { $(this).css({'z-index' : '0'}); $(this).find('img').removeClass("hover").stop() .animate({ marginTop: '0', marginLeft: '0', top: '0', left: '0', width: '150px', height: '150px', padding: '10px' }, 400); }); //Swap Image on Click $("ul.thumb li a").click(function() { var mainImage = $(this).attr("href"); //Find Image Name $("#main_view img").attr({ src: mainImage }); $("#main_view2 img").attr({ src: mainImage }); $("#main_view3 img").attr({ src: mainImage }); $("#main_view4 img").attr({ src: mainImage }); return false; }); }); </script> <script type="text/javascript"> $(document).ready(function() { $("#main_view img").attr({ src: './index_pliki/max1.jpg' }); $("#slickbox div[data-id=" + '01' + "].slickbox").show('slow'); $('a.slick-toggle').click(function() { var dataID = $(this).attr("data-id"); $('#slickbox div.slickbox').hide(); $("#slickbox div[data-id=" + dataID + "].slickbox").show('slow'); return false; }); }); </script> <script type="text/javascript"> $(document).ready(function() { $("#main_view2 img").attr({ src: './index_pliki/max2.jpg' }); $("#slickbox2 div[data-id=" + '11' + "].slickbox2").show('slow'); $('a.slick-toggle').click(function() { var dataID = $(this).attr("data-id"); $('#slickbox2 div.slickbox2').hide(); $("#slickbox2 div[data-id=" + dataID + "].slickbox2").show('slow'); return false; }); }); </script> <script type="text/javascript"> $(document).ready(function() { $("#main_view3 img").attr({ src: './index_pliki/max3.jpg' }); $("#slickbox3 div[data-id=" + '21' + "].slickbox3").show('slow'); $('a.slick-toggle').click(function() { var dataID = $(this).attr("data-id"); $('#slickbox3 div.slickbox3').hide(); $("#slickbox3 div[data-id=" + dataID + "].slickbox3").show('slow'); return false; }); }); </script> <script type="text/javascript"> $(document).ready(function() { $("#main_view4 img").attr({ src: './index_pliki/max4.jpg' }); $("#slickbox4 div[data-id=" + '31' + "].slickbox4").show('slow'); $('a.slick-toggle').click(function() { var dataID = $(this).attr("data-id"); $('#slickbox4 div.slickbox4').hide(); $("#slickbox4 div[data-id=" + dataID + "].slickbox4").show('slow'); return false; }); }); </script> <script type ="text/javascript"> $(document).ready(function() { //When page loads... $(".tab_content").hide(); //Hide all content $("ul.tabs li:first").addClass("active").show(); //Activate first tab $(".tab_content:first").show(); //Show first tab content //On Click Event $("ul.tabs li").click(function() { $("ul.tabs li").removeClass("active"); //Remove any "active" class $(this).addClass("active"); //Add "active" class to selected tab $(".tab_content").hide(); //Hide all tab content var activeTab = $(this).find("a").attr("href"); //Find the href attribute value to identify the active tab + content $(activeTab).fadeIn(); //Fade in the active ID content return false; }); }); </script> </head> <body> <div class="container"> <ul class="tabs"> <li><a href="#tab1">1</a></li> <li><a href="#tab2">2</a></li> <li><a href="#tab3">3</a></li> <li><a href="#tab4">4</a></li> </ul> <div class="tab_container"> <div id="tab1" class="tab_content"> <!--Content--> <ul class="thumb"> <li><a class="slick-toggle" href="./index_pliki/max1.jpg" data-id="01"><img src="./index_pliki/min1.jpg" alt="" /></a></li> <li><a class="slick-toggle" href="./index_pliki/max2.jpg" data-id="02"><img src="./index_pliki/min2.jpg" alt="" /></a></li> <li><a class="slick-toggle" href="./index_pliki/max3.jpg" data-id="03"><img src="./index_pliki/min3.jpg" alt="" /></a></li> <li><a class="slick-toggle" href="./index_pliki/max4.jpg" data-id="04"><img src="./index_pliki/min4.jpg" alt="" /></a></li> </ul> <div id="main_view"> <a href="index.htm"><img src="index_pliki/max1.jpg" alt=""/></a> <small style="float: right; color: rgb(153, 153, 153);"> </small> </div> <div id="wiecej"> <div id="slickbox"> <div id="someOtherID" class="slickbox" data-id="01" style="display: none;"> 1.1 </div> <div id="someOtherID" class="slickbox" data-id="02" style="display: none;"> 1.2 </div> <div id="someOtherID" class="slickbox" data-id="03" style="display: none;"> 1.3 </div> <div id="someOtherID" class="slickbox" data-id="04" style="display: none;"> 1.4 </div> <!-- <a href="#" id="slick-show"><img src="http://www.amptech.pl/images/more.jpg" alt="Zobacz wiecej" /></a> <a href="#" id="slick-hide"><img src="http://www.amptech.pl/images/online.jpg" alt="Zobacz wiecej" /></a>&nbsp;&nbsp; --> </div> </div> </div> <!-- tutaj wklejalem reszte --> <div id="tab2" class="tab_content"> <!--Content--> <ul class="thumb"> <li><a class="slick-toggle" href="./index_pliki/max4.jpg" data-id="11"><img src="./index_pliki/min4.jpg" alt="" /></a></li> <li><a class="slick-toggle" href="./index_pliki/max3.jpg" data-id="12"><img src="./index_pliki/min3.jpg" alt="" /></a></li> <li><a class="slick-toggle" href="./index_pliki/max2.jpg" data-id="13"><img src="./index_pliki/min2.jpg" alt="" /></a></li> <li><a class="slick-toggle" href="./index_pliki/max1.jpg" data-id="14"><img src="./index_pliki/min1.jpg" alt="" /></a></li> </ul> <div id="main_view2"> <a href="index.htm"><img src="index_pliki/max1.jpg" alt=""/></a> <small style="float: right; color: rgb(153, 153, 153);"> </small> </div> <div id="wiecej"> <div id="slickbox2"> <div id="someOtherID" class="slickbox2" data-id="11" style="display: none;"> 2.1 </div> <div id="someOtherID" class="slickbox2" data-id="12" style="display: none;"> 2.2 </div> <div id="someOtherID" class="slickbox2" data-id="13" style="display: none;"> 2.3 </div> <div id="someOtherID" class="slickbox2" data-id="14" style="display: none;"> 2.4 </div> </div> </div> </div> <div id="tab3" class="tab_content"> <ul class="thumb"> <li><a class="slick-toggle" href="./index_pliki/max4.jpg" data-id="21"><img src="./index_pliki/min4.jpg" alt="" /></a></li> <li><a class="slick-toggle" href="./index_pliki/max3.jpg" data-id="22"><img src="./index_pliki/min3.jpg" alt="" /></a></li> <li><a class="slick-toggle" href="./index_pliki/max2.jpg" data-id="23"><img src="./index_pliki/min2.jpg" alt="" /></a></li> <li><a class="slick-toggle" href="./index_pliki/max1.jpg" data-id="24"><img src="./index_pliki/min1.jpg" alt="" /></a></li> </ul> <div id="main_view3"> <a href="index.htm"><img src="index_pliki/max1.jpg" alt=""/></a> <small style="float: right; color: rgb(153, 153, 153);"> </small> </div> <div id="wiecej"> <div id="slickbox3"> <div id="someOtherID" class="slickbox3" data-id="21" style="display: none;"> 3.1 </div> <div id="someOtherID" class="slickbox3" data-id="22" style="display: none;"> 3.2 </div> <div id="someOtherID" class="slickbox3" data-id="23" style="display: none;"> 3.3 </div> <div id="someOtherID" class="slickbox3" data-id="24" style="display: none;"> 3.4 </div> </div> </div> </div> <div id="tab4" class="tab_content"> <ul class="thumb"> <li><a class="slick-toggle" href="./index_pliki/max4.jpg" data-id="31"><img src="./index_pliki/min4.jpg" alt="" /></a></li> <li><a class="slick-toggle" href="./index_pliki/max3.jpg" data-id="32"><img src="./index_pliki/min3.jpg" alt="" /></a></li> <li><a class="slick-toggle" href="./index_pliki/max2.jpg" data-id="33"><img src="./index_pliki/min2.jpg" alt="" /></a></li> <li><a class="slick-toggle" href="./index_pliki/max1.jpg" data-id="34"><img src="./index_pliki/min1.jpg" alt="" /></a></li> </ul> <div id="main_view4"> <a href="index.htm"><img src="index_pliki/max1.jpg" alt=""/></a> <small style="float: right; color: rgb(153, 153, 153);"> </small> </div> <div id="wiecej"> <div id="slickbox4"> <div id="someOtherID" class="slickbox4" data-id="31" style="display: none;"> 4.1 </div> <div id="someOtherID" class="slickbox4" data-id="32" style="display: none;"> 4.2 </div> <div id="someOtherID" class="slickbox4" data-id="33" style="display: none;"> 4.3 </div> <div id="someOtherID" class="slickbox4" data-id="34" style="display: none;"> 4.4 </div> </div> </div> </div> </div> </div>

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  • SQLAlchemy - how to map against a read-only (or calculated) property

    - by Jeff Peck
    I'm trying to figure out how to map against a simple read-only property and have that property fire when I save to the database. A contrived example should make this more clear. First, a simple table: meta = MetaData() foo_table = Table('foo', meta, Column('id', String(3), primary_key=True), Column('description', String(64), nullable=False), Column('calculated_value', Integer, nullable=False), ) What I want to do is set up a class with a read-only property that will insert into the calculated_value column for me when I call session.commit()... import datetime def Foo(object): def __init__(self, id, description): self.id = id self.description = description @property def calculated_value(self): self._calculated_value = datetime.datetime.now().second + 10 return self._calculated_value According to the sqlalchemy docs, I think I am supposed to map this like so: mapper(Foo, foo_table, properties = { 'calculated_value' : synonym('_calculated_value', map_column=True) }) The problem with this is that _calculated_value is None until you access the calculated_value property. It appears that SQLAlchemy is not calling the property on insertion into the database, so I'm getting a None value instead. What is the correct way to map this so that the result of the "calculated_value" property is inserted into the foo table's "calculated_value" column?

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  • Rails and MongoDB with MongoMapper

    - by FCastellanos
    I'm new to Rails development and I'm starting with MongoDB also. I have been following this Railscast tutorial about complex forms with Rails but I'm using MongoDB as my database. I'm having no problems inserting documents with it's childs and retrieving the data to the edit form, but when I try to update it I get this error undefined method `assert_valid_keys' for false:FalseClass this is my entity class class Project include MongoMapper::Document key :name, String, :required => true key :priority, Integer many :tasks after_update :save_tasks def task_attributes=(task_attributes) task_attributes.each do |attributes| if attributes[:id].blank? tasks.build(attributes) else task = tasks.detect { |t| t.id.to_s == attributes[:id].to_s } task.attributes = attributes end end end def save_tasks tasks.each do |t| t.save(false) end end end Does anyone knows whats happening here? Thanks

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