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  • Prolog for beginners about logic and syntax

    - by lnotik
    Hello everybody. I have this question : I need to create a paradict "rightGuesses" which will get 3 arguments , each one of them is a list of letters : 1) The list of guessed letters 2) The word i have to guess 3) The letters that where guessed so far . for example : rightGuesses([n,o,p,q], [p,r,o,l,o,g], Ans). will give us Ans = [p, -, o, -, o, -]. i made: rightGuesses([],T2,[ANS]) rightGuesses([A|T1],T2,[ANS]):- (member(A,T2))=\=true , rightGuesses(T1,T2,[ _ |'-']). rightGuesses([A|T1],T2,[ANS]):- member(A,T2), rightGuesses(T1,T2,[ _ |A]). but i get : ERROR: c:/users/leonid/desktop/file3.pl:5:0: Syntax error: Operator expected Warning: c:/users/leonid/desktop/file3.pl:6: when i trying to compile it what is my problem , and is there is a better way to do it ? thanks in advance.

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  • jQuery/javascript events - prototype event handler

    - by Brian M. Hunt
    The following code doesn't work as I intuitively expect it to: function MyObject(input) { input.change(this._foo); this.X = undefined; } MyObject.prototype._foo = function() { alert("This code is never called"); // but if it did this.X = true; } var test_input = $("input#xyz"); // a random, existing input var m = MyObject(test_input); // attach handler (or try to) test_input.change(); // trigger event alert(m.X); // undefined I'd expect that _foo() would be called (and, if that ever happens, that the this variable in _foo() would be an instantiation of MyObject. Does anyone know why this doesn't work, and of any alternative pattern for passing an object to an event handler? Thank you for reading. Brian

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  • Problem Passing Variable to Submit Form in Firefox

    - by George
    In the following example, I have a link that sends a variable to a function which checks if the variable is true and, if so, submits a form on the page. This has been tested and works in IE, Safari, and Chrome, but not Firefox. Trying to figure out what's wrong in Firefox. The function which checks 'action' and then submits form 'login' : function submit(action) { if (action == "submit") { document.login.submit(); } } Link to pass action variable and submit form: <a href="javascript:submit('submit');">SEND FORM</a> When I remove the check and just have the following, it works fine in Firefox: function submit() { document.login.submit(); } <a href="javascript:submit();">SEND FORM</a>

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  • Gridview with row being edited causing error when form submitted

    - by Chris Phelps
    Using ASP.NET VB, I have a form with some text boxes and a Gridview. If a user clicks the Edit button on a row in the gridview, and then tries to submit the form with a row still in edit mode on the Gridview, this error is generated - "Invalid postback or callback argument. Event validation is enabled using in configuration or <%@ Page EnableEventValidation="true" % in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation. " Any idea how to prevent this error??

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  • Do Url shorteners such as bit.ly serve any purpose in web development?

    - by gath
    I might be missing something here but am unable to understand the true purpose of link shortener services like bit.ly or is it just a lot of hype! Truly if you type nyti.ms on your URL bar on the browser it takes you to www.nytimes.com, but still what is so hard in typing "nytimes.com! which is far much comprehensible to read and understand leave alone to remember! Does shortening URL serve any purpose in web development? Why should someone want use obscure shortened URL?

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  • Delete old map markers and load new ones?

    - by pufAmuf
    I'm trying to delete the old markers and load new ones. Here is the code I have that loads certain markers on page load - no issues here: (function() { var customIcons = { 1: { icon: 'redmarker.png', shadow: 'markershadow.png' }, 2: { icon: 'purplemarker.png', shadow: 'markershadow.png' }, 3: { icon: 'silvermarker.png', shadow: 'markershadow.png' }, 4: { icon: 'goldmarker.png', shadow: 'markershadow.png' } }; window.onload = function(){ var MY_MAPTYPE_ID = 'custom'; var stylez = [ { "stylers": [ { "hue": "#00ccff" }, { "saturation": -100 }, { "lightness": 5 } ] },{ } ]; var latlng = new google.maps.LatLng(10, 10); var options = { zoom: 16, center: latlng, panControl: false, zoomControl: false, scaleControl: true, mapTypeControlOptions: { mapTypeIds: [MY_MAPTYPE_ID,google.maps.MapTypeId.SATELLITE] }, mapTypeId: MY_MAPTYPE_ID }; var map = new google.maps.Map(document.getElementById('map'), options); var styledMapOptions = { name: 'Map' }; var jayzMapType = new google.maps.StyledMapType(stylez, styledMapOptions); map.mapTypes.set(MY_MAPTYPE_ID, jayzMapType); var infoWindow = new google.maps.InfoWindow; // Change this depending on the name of your PHP file downloadUrl("getxml.php", function(data) { var xml = data.responseXML; var markers = xml.documentElement.getElementsByTagName("marker"); for (var i = 0; i < markers.length; i++) { var name = markers[i].getAttribute("id"); var address = markers[i].getAttribute("id"); var type = markers[i].getAttribute("venue_type"); var point = new google.maps.LatLng( parseFloat(markers[i].getAttribute("lat")), parseFloat(markers[i].getAttribute("lng"))); var html = "<b>" + name + "</b> <br/>" + address; var icon = customIcons[type] || {}; var marker = new google.maps.Marker({ map: map, position: point, icon: icon.icon, shadow: icon.shadow }); bindInfoWindow(marker, map, infoWindow, html); } }); //BUTTON SWITCHING //////////////////////////////////////////////////////////// //BUTTON SWITCHING //////////////////////////////////////////////////////////// //BUTTON SWITCHING //////////////////////////////////////////////////////////// //BUTTON SWITCHING //////////////////////////////////////////////////////////// //BUTTON SWITCHING //////////////////////////////////////////////////////////// //BUTTON SWITCHING //////////////////////////////////////////////////////////// //BUTTON SWITCHING //////////////////////////////////////////////////////////// jQuery(document).delegate(".topCanBeActive", "click", function( e ) { e.preventDefault(); jQuery(".topCanBeActive").removeClass("topActive"); jQuery(this).addClass("topActive"); switch( this.id ){ case 'all_activity_button': alert("search"); break; case 'events_button': downloadUrl("getxml2.php", function(data) { var xml = data.responseXML; var markers = xml.documentElement.getElementsByTagName("marker"); for (var i = 0; i < markers.length; i++) { var name = markers[i].getAttribute("id"); var address = markers[i].getAttribute("id"); var type = markers[i].getAttribute("venue_type"); var point = new google.maps.LatLng( parseFloat(markers[i].getAttribute("lat")), parseFloat(markers[i].getAttribute("lng"))); var html = "<b>" + name + "</b> <br/>" + address; var icon = customIcons[type] || {}; var marker = new google.maps.Marker({ map: map, position: point, icon: icon.icon, shadow: icon.shadow }); bindInfoWindow(marker, map, infoWindow, html); } }); break; case 'venues_button': alert("venues"); break; case 'search_button': alert("search"); break; } }); //END //////////////////////////////////////////////////////////// //END //////////////////////////////////////////////////////////// //END //////////////////////////////////////////////////////////// //END //////////////////////////////////////////////////////////// //END //////////////////////////////////////////////////////////// //END //////////////////////////////////////////////////////////// //END //////////////////////////////////////////////////////////// //END //////////////////////////////////////////////////////////// } function bindInfoWindow(marker, map, infoWindow, html) { google.maps.event.addListener(marker, 'click', function() { infoWindow.setContent(html); infoWindow.open(map, marker); }); } function downloadUrl(url, callback) { var request = window.ActiveXObject ? new ActiveXObject('Microsoft.XMLHTTP') : new XMLHttpRequest; request.onreadystatechange = function() { if (request.readyState == 4) { request.onreadystatechange = doNothing; callback(request, request.status); } }; request.open('GET', url, true); request.send(null); } function doNothing() {} })(); Now, I created a button section where if you press one button, a different xml file is loaded. Notice the section with the ////////////////////// However, upon clicking the button, nothing happens. The xml file itself is okay and loads the desired data. I also receive no errors in firebug. Any ideas why this happens? Thanks!

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  • after dragging up, animate viewport up and after dragging down, animate viewport down...

    - by Luis
    I been trying to make this work for the last couple of days, I'm a new into web designing so I hope someone can help me out with this. I'm trying to run an animation after dragging the div container depending if the user is dragging up or down. This is the code that Im working on. this is the code when calling the jquery widget $ $('#container').draggable({scroll:true, axis: 'y', //scrollSensitivity: 1000, stop: function(event, ui) { if(scrollY <= 0){ $('#container').animate({ top: '-2000px' }, 500); } if(scrollY -= 0){ $('#container').animate({ top: '0' }, 500); } } });

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  • Adding a search box to a windows forms web browser control that highlights text

    - by evan
    I have a windows forms (using c#) application. It displays a webpage and has a textbox/botton combination which can be used to search for text displayed to the user. Currently I search the inner text of all elements for the text in the textbox. And then I weed out the elements that are redundant (for example a word could be in a 'p' and 'b' element where the 'b' is a child element of 'p' so the element returned should be 'b'). Finally I run the ScrollIntoView(true) method on the found element. I'd now like to add a function that highlights the text (like if you search for a term in a real webbrowser). My first thought was to just inject html and or javascript code around the text but that seems like a messy solution. Any ideas on how I should do this? Thanks for your help!

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  • Issue with plotting daily data using ggplot

    - by user1723765
    I tried to plot daily data from 9 variables in ggplot, but the graph I get cannot handle the date variable properly. The x axis is unreadable and its impossible to read the plot. I'm guessing there's an issue with the handling of dates. Here's the data: https://dl.dropbox.com/u/22681355/su.csv Here's the code I've been using: su=read.csv(file="su.csv", head=TRUE) meltdf=melt(su) ggplot(meltdf, aes(x=Date, y=value, colour=variable, group=variable))+geom_line() and here's the output: https://dl.dropbox.com/u/22681355/output.jpg here's the same plot done in excel, why does it look completely different?

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  • Event handling for a dynamically added user control

    - by francisf
    Hi, I have a user control say SearchVendor.ascx which contains 4 buttons a gridview and another user control. I need to load the control dynamically actually as a modal pop up I get this code VendorProductSearch uc = Page.LoadControl("~/Controls/Proposal/VendorProductSearch.ascx") as VendorProductSearch; uc.ShowVendorProductSearch(true); _tempPlaceHolder.Controls.Add(uc); it works fine the control gets loaded properly but onclick of any button the second time the control disappears ??? I want the dynamically added control to remain until the user clicks on the cancel button Any idea as to how to achive this ? Thanks & Regards, Francis P.

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  • Sending JSON collection to ASMX webservice

    - by Mironline
    I have got this json collection in page : var json= { "Elements": [ {"Alignment":null,"Bold":false}, {"Alignment":null,"Bold":false} ], "Front":true, "ThemeID":"9" }; I've generated this JSON in run-time & posted to page. my question is , What is the best solution to send this json to web-service using jQuery. should I use the JSON.stringify method and sent it as as string ? if yes what is the input type in web-service ? can I send it as an object to web-service and set the List<CusomeObject> as input ? in this case how can I implement that ?

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  • Random number within a range based on a normal distribution

    - by ConfusedAgain
    I'm math challenged today :( I want to generate random numbers with a range (n to m, eg 100 to 150), but instead of purely random I want the results to be based on the normal distribution. By this I mean that in general I want the numbers "clustered" around 125. I've found this random number package that seems to have a lot of what I need: http://beta.codeproject.com/KB/recipes/Random.aspx It supports a variety of random generators (include mersiene twister) and can apply the generator to a distribution. But I'm confused... if I use a normal distribution generator the random numbers are from roughly -6 to +8 (apparently the true range is float.min to float.max). How do a scale that to my required range?

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  • Google App Engine PersistenceManager can process multiple objects ?

    - by Frank
    I have some code like this : PersistenceManager pm=PMF.get().getPersistenceManager(); String query="select from "+PayPal_Message.class.getName()+" where processed == false order by time desc"; List<PayPal_Message> messages=(List<PayPal_Message>)pm.newQuery(query).execute(); if (messages.isEmpty()) { } else { for (PayPal_Message g : messages) { Contact_Info_Entry A_Contact_Entry=Process_PayPal_Message_To_Get_A_License(g.getContent().getValue()); pm=PMF.get().getPersistenceManager(); try { pm.makePersistent(A_Contact_Entry); g.setProcessed(true); pm.makePersistent(g); } catch (Exception e) { Send_Email(Email_From,"[email protected]","Servlet Error Message [ "+time+" ]",new Text(e.toString())); } // finally { pm.close(); } } } pm.close(); I wonder if it's ok to use the pm above to process multiple objects before closing it. Or do I have to get and close pm for processing each object ?

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  • SBT equivalent of Ant target

    - by adelbertc
    What is the SBT equivalent (if any) of Ant targets? For example, a snippet in a build.xml file for Ant would be: <target name="runClient" description="run client"> <java classname="client.Client" fork="true"> <jvmarg value="-Djava.rmi.server.codebase=${client_web_codebase}"/> <jvmarg value="-Djava.security.policy=policy"/> <arg value="localhost"/> <classpath> <pathelement location="dist/client.jar"/> </classpath> </java> </target> And then I would do something like ant runClient to launch the application "client.Client" with the jvmargs specified in the XML.. is there an SBT equivalent, or a way for SBT to hook into Ant to do this?

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  • When do I need to deallocate memory?

    - by extintor
    I am using this code inside a class to make a webbrowser control visit a website: void myClass::visitWeb(const char *url) { WCHAR buffer[MAX_LEN]; ZeroMemory(buffer, sizeof(buffer)); MultiByteToWideChar(CP_ACP, MB_ERR_INVALID_CHARS, url, strlen(url), buffer, sizeof(buffer)-1); VARIANT vURL; vURL.vt = VT_BSTR; vURL.bstrVal = SysAllocString(buffer); // webbrowser navigate code... VariantClear(&vURL); } I call visitWeb from another void function that gets called on the handlemessage() for the app. Do I need to do some memory deallocation here?, I see vURL is being deallocated by VariantClear but should I deallocate memory for buffer? I've been told that in another bool I have in the same app I shouldn't deallocate anything because everything clear out when the bool return true/false, but what happens on this void?

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  • Sending JSON(jQuery) to PHP and decoding it

    - by dscher
    I can't for the life of me figure out what I'm doing wrong. It seems like it should be simple because I can't find anyone else with this issue but I can't figure out to send basic data via javascript(jQuery) to PHP and decode it. For the sake of simplicity, this is what I have: JAVASCRIPT var json_data = { "name" : "john doe" }; $.ajax({ type: "POST", url: "../bin/process.php", dataType: "json", data: json_data }); and my PHP FILE $arr = json_decode("json_data", true); $fp = fopen('data.txt', "w"); fwrite($fp, $arr['name']); fclose($fp); The file I'm writing ends up with nothing in it. If I do an: fwrite($fp, 'test'); I get a file with the word test in it but no matter what I do I don't get the json data I sent. Can someone please share a thorough example of A to Z. Thanks for any help.

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  • Sending JSON(jQuery) to PHP and decoding it

    - by dscher
    I can't for the life of me figure out what I'm doing wrong. It seems like it should be simple because I can't find anyone else with this issue but I can't figure out to send basic data via javascript(jQuery) to PHP and decode it. For the sake of simplicity, this is what I have: JAVASCRIPT var json_data = { "name" : "john doe" }; $.ajax({ type: "POST", url: "../bin/process.php", dataType: "json", data: json_data }); and my PHP FILE $arr = json_decode("json_data", true); $fp = fopen('data.txt', "w"); fwrite($fp, $arr['name']); fclose($fp); The file I'm writing ends up with nothing in it. If I do an: fwrite($fp, 'test'); I get a file with the word test in it but no matter what I do I don't get the json data I sent. Can someone please share a thorough example of A to Z. Thanks for any help.

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  • Turning a refresh ImageView into a ProgressBar

    - by Macarse
    I am doing a custom title for my android app and I want to have a refresh button like the Twitter app. I am using a RelativeLayout an my ImageView is defined by: <ImageView android:id="@+id/title_refresh" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/ic_menu_refresh" android:layout_alignParentRight="true"> </ImageView> In my Activity I have something like this: refreshView = (ImageView) findViewById(R.id.title_refresh); refreshView.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { /* Make the refreshView turn into a progress bar. */ startService(new Intent(MyActivity.this, MyService.class)); } } I would like the ImageView to turn into a ProgressBar while I wait for my service to finish processing. How is the correct way to do this?

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  • Cannot resolve view when view is in subdirectory

    - by devzero
    We have a MVC 2.0 / c# 4.0 application that we develop visual studio. We have a part of the site (admin) that we have put in it's own sub directory and with its own routing rules: routes.Add("DomainRoute", new DomainRoute( ConfigurationManager.AppSettings["adminDomain"], // Domain with parameters "{controller}/{action}/{id}", // URL with parameters new { controller = "AdminPage", action = "Admin", id = "", isAdmin = true } We have all the views for the admin site inside an admin sub folder so that you get paths like: \views\admin\auth\login.aspx In the \controllers\admin\authController.aspx file I have a function called login: public ActionResult Login() { return View(); } This works just as it should, ie if i go admin.localhost\auth\login I go to the login page. But if I do a right click in visual studio and "go to view" i get an error "unable to go to matching view". Is there anyway to solve this?

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  • Concatenate String to Evernote Markup Language (ENML) in python

    - by Adam the Mediocre
    I am looking to add a string containing the user's text input to the note.content of my note. After reading, I have found how to add resources, but I don't want the resource to be an attachment, I want it to be the actual text. Here is some of the code: title= self.textEditTitle.text() body= self.textEditBody.text() auth_token = "secret stuff!" client = EvernoteClient(token=auth_token, sandbox=True) note_store = client.get_note_store() nBody = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" nBody += "<!DOCTYPE en-note SYSTEM \"http://xml.evernote.com/pub/enml2.dtd\">" nBody += "<en-note>%s</en-note>" % body note = Types.Note() note.title = title note.content= nBody Any advice would be great, as I'm just starting out with this api and it looks like it's full of potential once I figure it out! Here is what I have been mostly reading from: http://dev.evernote.com/documentation/cloud/chapters/ENML.php

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  • Weak reference and Strong reference

    - by theband
    package uk.co.bigroom.utils { import flash.utils.Dictionary; /** * Class to create a weak reference to an object. A weak reference * is a reference that does not prevent the object from being * garbage collected. If the object has been garbage collected * then the get method will return null. */ public class WeakRef { private var dic:Dictionary; /** * The constructor - creates a weak reference. * * @param obj the object to create a weak reference to */ public function WeakRef( obj:* ) { dic = new Dictionary( true ); dic[obj] = 1; } /** * To get a strong reference to the object. * * @return a strong reference to the object or null if the * object has been garbage collected */ public function get():* { for ( var item:* in dic ) { return item; } return null; } } } In this Class, how they denote one as Weak Reference and one as Strong reference.

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  • document.getElementByID - checking whether an element has been found or not

    - by be here now
    Hi, guys. Here's a sample code, that opens an internet explorer window, navigates to google, and gets some element on the page by its unique id: set ie = CreateObject("InternetExplorer.Application") ie.navigate("www.google.com") ie.visible = true while ie.readystate <> 4 wscript.sleep 100 WEnd set some_object = ie.document.getelementbyid("xjsc") MsgBox some_object.tagname, 0 This sample brings me a DIV popup, which satisfies me completely. But at the next step I'd like to check whether some id exists in the page, or not. Unfortunately, I can't just be, like, set some_object = ie.document.getelementbyid("some_non_existant_id") if some_object.tagname = "" then ... because it gives me the following error: ie.vbs(12, 1) Microsoft VBScript runtime error: Object required: 'some_object' So, what's the best practice to check whether an element has been found or not?

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  • Prevent Carousel scroll within scrollable Container (Sencha 2)?

    - by TragedyStruck
    I've got a Container with a header, content (Carousel) and a footer. The Container itself is therefor scrollable (vertical) to be able to scroll down to the footer. The Carousel can be swiped horizontally to change active item. I want to lock it to do only two thing: If starting to move vertically, only scroll Container If starting to move horizontally, only scroll Carousel If you now grab the Carousel you are able to scroll both ways at the same time. Example code: Ext.define('MyApp.view.MyContainer', { extend: 'Ext.Container', config: { scrollable: true, items: [ { xtype: 'container', items: [ { xtype: 'label', html: 'abc' } ] }, { xtype: 'carousel', height: 200, scrollable: false, items: [ { xtype: 'label', html: 'x' }, { xtype: 'label', html: 'y<br/>y<br/>y<br/>y<br/>y<br/>y<br/>y<br/>y' } ] }, { xtype: 'container', items: [ { xtype: 'label', html: 'def' } ] } ] } }); Using Sencha Touch 2.

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  • disable hibernate logging in cosole

    - by ganiOz
    Hi, My log4j.properties looks like log4j.rootCategory=DEBUG, A1 log4j.appender.A1=org.apache.log4j.RollingFileAppender log4j.appender.A1.File=InteroperabilityFatal.log log4j.appender.A1.MaxFileSize=1000KB log4j.appender.A1.MaxBackupIndex=1000 log4j.appender.A1.layout=org.apache.log4j.PatternLayout log4j.appender.A1.layout.ConversionPattern=%p %t %c - %m%n log4j.appender.A1.Threshold=FATAL log4j.appender.A1.Append=true log4j.logger.org.hibernate=FATAL log4j.logger.org.hibernate.sql=FATAL log4j.logger.org.hibernate.hql=error I want only fatal logs into the file and nothing in console. But hibernate is logging all its info in console. Can someone pls let me know a way to stop this? I tried in eclipse and from executable jar file, still the hibernate is keep logging in console. Thanks in advance for help.

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  • C# Lists, Foreach, and Types

    - by user406470
    I was wondering if there is a version of foreach that checks only for a specific type and returns it. For example consider this class tree: org.clixel.ClxBasic - org.clixel.ClxObject - org.clixel.ClxSprite - WindowsGame1.test Then consider this code public List<ClxBasic> objects = new List<ClxBasic>(); foreach(GroupTester tester in objects) { tester.GroupTesterOnlyProperty = true; } tester.GroupTesterOnlyProperty is a property created in GroupTester. Is there some way to make something like this work, like an overload of foreach, or another snippet that might help me? I want to make it easy for a programmer to sort through the lists grabbing only what type they need.

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