Search Results

Search found 62701 results on 2509 pages for 'sql function'.

Page 1632/2509 | < Previous Page | 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639  | Next Page >

• Flex 3 - Saving an image of a component

  - by Emma

  Im currently trying to work the imageSnapshot function in flex. Ive been looking hard but I cant seem to find a solution to my problem. I wish to take a screenshot of one of my components, to capture the final output of my program, since a plain "printscreen" cuts off some of the output due to it scrolling. My current code looks like - <mx:ApplicationControlBar dock="true"> <mx:Button label="Take snapshot of Profile" click="takeSnapshot();" /> </mx:ApplicationControlBar> Which when called does - private function takeSnapshot(even:Event=null):void { var imageSnap:ImageSnapshot = ImageSnapshot.captureImage(viewstack1); Now i think this is taking the image of the viewstack which I want... But Im stumped on what to do from here! Is it not possible to now just copy the image to the clipboard, or produce a new window in my browser with the entire image inside? If anyone has any other way to do this, suggestions would be wonderful. Thank you for your time.

  Read the article

• JQuery - Sticky sidebar not working in Firefox

  - by user1473358

  I'm working on a site with a Sticky sidebar (fixed position under certain conditions, etc) that is working fine in Chrome & Safari, but breaks in Firefox. I'm not sure what the issue is since I didn't write the script: $(document).ready(function() { /* var defaults = { containerID: 'toTop', // fading element id containerHoverID: 'toTopHover', // fading element hover id scrollSpeed: 1200, easingType: 'linear' }; */ $().UItoTop({ easingType: 'easeOutQuart' }); if (!!$('.sticky').offset()) { // make sure ".sticky" element exists var stickyTop = $('.sticky').offset().top; // returns number var newsTop = $('#news_single').offset().top; // returns number $(window).scroll(function(){ // scroll event var windowTop = $(window).scrollTop(); // returns number var width = $(window).width(); var height = $(window).height(); if (stickyTop < windowTop && width > 960 && height > 450){ $('.sticky').css({ position: 'fixed', top: 40 }); $('#news_single').css({ left: 230 }); } else { $('.sticky').css('position','static'); $('#news_single').css({ left: 0 }); } }); } }); Here's the site (the sidebar in question is the one with the red header, to the left): http://www.parisgaa.org/parisgaels/this-is-a-heading-too-a-longer-one I'd appreciate any help with this.

  Read the article

• With PascalMock how do I mock a method with an untyped out parameter and an open array parameter?

  - by Oliver Giesen

  I'm currently in the process of getting started with unit testing and mocking for good and I stumbled over the following method that I can't seem to fabricate a working mock implementation for: function GetInstance(const AIID: TGUID; out AInstance; const AArgs: array of const; const AContextID: TImplContextID = CID_DEFAULT): Boolean; (TImplContextID is just an alias for Integer) I thought it would have to look something like this: function TImplementationProviderMock.GetInstance( const AIID: TGUID; out AInstance; const AArgs: array of const; const AContextID: TImplContextID): Boolean; begin Result := AddCall('GetInstance') .WithParams([@AIID, AContextID]) .ReturnsOutParams([AInstance]) .ReturnValue; end; But the compiler complains about the .ReturnsOutParams([AInstance]) saying "Bad argument type in variable type array constructor.". Also I haven't found a way to specify the open array parameter AArgs at all. Also, is using the @-notation for the TGUID-typed parameter the right way to go? Is it possible to mock this method with the current version of PascalMock at all?

  Read the article

• Using pipes in Linux with C

  - by Dave

  Hi, I'm doing a course in Operating Systems and we're supposed to learn how to use pipes to transfer data between processes. We were given this simple piece of code which demonstrates how to use pipes,but I'm having difficulty understanding it. #include <stdio.h> #include <stdlib.h> #include <unistd.h> main() { int pipefd [2], n; char buff[100] ; if( pipe( pipefd) < 0) { printf("can not create pipe \n"); } printf("read fd = %d, write fd = %d \n", pipefd[0], pipefd[1]); if ( write (pipefd[1],"hello world\n", 12)!= 12) { printf("pipe write error \n"); } if( ( n = read ( pipefd[0] , buff, sizeof ( buff) ) ) <= 0 ) { printf("pipe read error \n"); } write ( 1, buff, n ) ; exit (0); } What does the write function do? It seems to send data to the pipe and also print it to the screen (at least it seems like the second time the write function is called it does this). Does anyone have any suggestions of good websites for learning about topics such as this, FIFO, signals, other basic linux commands used in C?

  Read the article

• code igniter codeigniter question, making anchor load page containing data from referenced row in DB

  - by thrice801

  Hi, Im trying to learn the code igniter library and object oriented php in general and have a question. Ok so Ive gotten as far as making a page which loads all of the rows from my database and in there, Im echoing an anchor tag which is a link to the following structure. [code]echo anchor("videos/video/$row-video_id", $row-video_title);[/code] So, I have a class called Videos which extends the controller, within that class there is index and video, which is being called correctly (when you click on the video title, it sends you to videos/video/5 for example, 5 being the primary key of the table im working with. So basically all Im trying to do is pass that 5 back to the controller, and then have the particular video page output the particular rows data from the videos table. My function in my controller for video looks like this - [code] function video() { $data['main_content'] = 'video'; $data['video_title'] = 'test'; $this-load-view('includes/template', $data); } [/code] So ya, basically test should be instead of test, a returned value of a query which says get in the table "videos", the row with the video_id of "5", and make $data['video_title'] = value of video_title in database... Should have this figured out by now but dont, any help would be appreciated!

  Read the article

• jQuery .attr() crashing Internet Explorer

  - by Sunyatasattva

  Hello everyone, This is my first time posting a question here, as I usually try to find solutions myself. This one, though, being an IE issue, just drives me crazy. I use jQuery cycle plug-in on a website I made and, to populate a caption div, I use a little function that is called after the image is loaded, which uses the "alt" attribute of the image. This seems to exasperate Internet Explorer, which, doesn't have the time to fulfill this apparently so-complicated task, and, as the slideshow cycles, it enters in an infinite loop and eventually crashes – the newer the version, the worse the crash: the older IEs just display an error message saying “The webpage cannot be displayed”, while the newer (7 and 8) completely crash the system. I have no idea on how to solve or work around this. Here is the problematic code. function changeCaption() { var caption = $("img", this).attr("alt"); $('#caption').fadeIn("slow").html(caption); } Thanks in advance for any pointer: I am amazed as how something so simple and globally recognized (didn't encounter any other browser who had problem with this), can cause a problem so big. I also read somewhere that being able to crash a browser remotely is a serious issue :) Lucio

  Read the article

• Strange problem with vectors.

  - by Catalin Dumitru

  I have a really strange problem with stl vectors in which the wrong destructor is called for the right object when I call the erase method if that makes any sense. My code looks something like this: for(vector<Category>::iterator iter = this->children.begin(); iter != this->children.end(); iter++) { if((*iter).item == item) { this->children.erase(iter); return; } ------------------------- } It's just a simple function that finds the element in the vector which has some item to be searched, and removes said element from the vector. My problem is than when the erase function is called, and thus the object which the iterator is pointing at is being destroyed, the wrong destructor is being called. More specific the destructor of the last element in the vector is being called, and not of the actual object being removed. Thus the memory is being removed from the wrong object, which will still be an element in the vector, and the actual object which is removed from the vector, still has all of it's memory intact. The costructor of the object looks like this: Category::Category(const Category &from) { this->name = from.name; for(vector<Category>::const_iterator iter = from.children.begin(); iter != from.children.end(); iter++) this->children.push_back((*iter)); this->item = new QTreeWidgetItem; } And the destructor Category::~Category() { this->children.clear(); if(this->item != NULL) { QTreeWidgetItem* parent = this->item->parent(); if(parent != NULL) parent->removeChild(this->item); delete this->item; } }

  Read the article

• matching an element's class to another element's ID, or *part* of another element's ID

  - by shecky

  hello again Such a simple concept but I'm struggling to express it ... apologies in advance for my verbosity. I have a container div with a class, e.g., ; I want to use that class to do two things: add a class (e.g., 'active') to the nav element whose ID matches the class of div#container (e.g., #nav-primary li# apples) add the same class to another element if part of this element's ID matches the class of #container (e.g., div#secondary-apples) I assume there's an .each() loop to check the primary nav's list items' IDs, and to check the div IDs of the secondary nav ... though the latter needs to have its prefix trimmed ... or should I say more simply if the secondary nav div IDs contain the class of div#container? I've tried a few variations of something like this: <script type="text/javascript"> $(document).ready(function() { $('#nav-primary li').each(function(){ var containerClass = $('#container').attr('class'); var secondaryID = $('#nav-primary li').attr('id'); // something like if ('#nav-primary li id' == (containerClass) { } // or should I first store a variable of the LI's ID and do something like this: if ( secondaryID == containerClass ) { } // and for the trickier part, how do I filter/trim the secondary nav div IDs, something like this: var secondaryNavID = $('#aux-left div[id ... something here to strip the 'secondary-' bit ... ]'); }); // end each }); // end doc.ready.func </script> The markup is, e.g.: ... ... ... ... ... ... ... Many thanks in advance for any suggestions, svs

  Read the article

• Unexpected end of file while searching for ']' to end attribute selector.

  - by zurna

  I dont understand what would be the problem with the following code. It needs to copy image's id value to another textbox but instead I get an error. Unexpected end of file while searching for ']' to end attribute selector. <script> $(function() { $(".floatLeft").click(function() { var id = $(this).attr("id").replace(/\D/g, ""); $("input[name='photo[" + id + "]'").val(Math.abs($("input[name='photo[" + id + "]'").val() - 1)); }); }); </script> <ul class="thumbs"> <li> <img src="/FLPM/media/news/images/2M9Y1I2K_sm.jpg" alt="Garden" id="28" class="floatLeft" /> <input type="text" name="photo28" value="0" /> <br /> <a href="?Process=&IMAGEID=28" class="thumb"><span class="floatLeft">DELETE</span></a> </li> <li> <img src="/FLPM/media/news/images/2A9L1V2X_sm.jpg" alt="Frangipani Flowers" id="27" class="floatLeft" /> <input type="text" name="photo27" value="0" /> <br /> <a href="?Process=&IMAGEID=27" class="thumb"><span class="floatLeft">DELETE</span></a> </li> </ul>

  Read the article

• jQuery scrolling UL with hidden overflow

  - by papermate

  I have a UL with LI's set to display horizontally. The UL has a fixed width and it's set to hide the overflow. This is so I can display my images, which are to be used in a gallery, neatly. It works and looks nice. I want to, however, use jQuery to scroll the contents of the UL rather than set the overflow property to auto and be presented with those ugly scroll bars. I recycled some code I used to do the same thing a few weeks back but, back then, I was doing it in DIV's. Much easier, apparently. $('.gallery_container span').hover( function() { if ($(this).attr('class') == 'up') direction = '-='; else direction = '+='; var divOffset = $('ul.gallery').offset().top; $('ul.gallery').animate({scrollTop: direction + divOffset}, 5000); }, function() { $('ul.gallery').stop(); }); I saw a site that says the scrollTop property can be applied to UL's. So I'm not sure what exactly is causing this not to work. Any ideas? EDIT: Found what was causing it to not work at all but not it scrolls vertically - Kind of expected that. Is there any way to scroll it horizontally?

  Read the article

• Display real time years, months, weeks and days between 2 days in JavaScript

  - by alex

  This is what I've coded it up, and it appears to work. window.onload = function() { var currentSpan = document.getElementById('current'); var minute = 60000, hour = minute * 60, day = hour * 24, week = day * 7, month = week * 4, year = day * 365; var start = new Date(2009, 6, 1); setInterval(function() { var now = new Date(); var difference = now - start; var years = Math.floor(difference / year), months = Math.floor((difference - (years * year)) / month), weeks = Math.floor((difference - (months * month + years * year)) / week), days = Math.floor((difference - (weeks * week + months * month + years * year)) / day); currentSpan.innerHTML = 'Since has passed: ' + years + ' years, ' + months + ' months, ' + weeks + ' weeks and ' + days + ' days'; }, 500); }; This seems to update my span fine, and all the numbers look correct. However, the code looks quite ugly. Do I really need to set up faux constants like that, and then do all that math to calculate what I want? It's been a while since I've worked with the Date object. Is this the best way to do this?

  Read the article

• testing if constructor in constructor chain

  - by Delan Azabani

  I'm attempting to implement a GTK+ inspired widget toolkit for the web in JavaScript. One of the constructor chains goes gtk.widget => gtk.container => gtk.bin => gtk.window Every gtk.widget has a showAll method, which, if and only if the widget is a gtk.container or derivative (such as gtk.bin or gtk.window), will recursively show the children of that widget. Obviously, if it isn't a gtk.container or derivative, we shouldn't do anything because the widget in question can't contain anything. For reference, here is my inheritance function; it's probably not the best, but it's a start: function inherit(target, parent) { target.prototype = new parent; target.prototype.constructor = target; } I know that I can check for the direct constructor like this: if (this.constructor === gtk.container) ... However, this only tests for direct construction and not, say, if the object is a gtk.bin or gtk.window. How can I test whether gtk.container is somewhere up in the constructor chain?

  Read the article

• JQuery UI Tabs: Apply opacity toggle to only specific inner element?

  - by Kerri

  I am using Jquery UI tabs, and have it set to toggle the opacity with each slide change. I'm wondering if there's a way to apply the opacity toggle to only a single element within each tab, instead of the entire tab. My understanding of jQuery is pretty basic, so bear with me. So, If I have something like this: <div id="tabs"> <ul id="tabs-nav><li></li></ul> <div id="tab-1"> <img /> <p /> </div> <div id="tab-2"> <img /> <p /> </div> ...etc </div> How could I set it so that only the <img> has an effect applied, and the rest just switches normally? Here are the basics of the call I have for UI tabs: var $tabs = $('#slides').tabs({fx: { opacity: 'toggle' } }); $(".ui-tabs-panel").each(function(i){ //stuff to create previous/next links }); $('.next-tab, .prev-tab').click(function() { $tabs.tabs('select', $(this).attr("rel")); return false; });

  Read the article

• Problem with giving focus to first element inside a container

  - by rahul

  Hi, I am just trying to cycle the focus between elements inside a particular element when the tab key is pressed. What I want to do is not to set focus to any element which is not a descendant of an element when tab is pressed from the last control inside the element. At that time the focus must be set to the first input element inside the container. I have done a sample and it its not working, and I am unable to figure out the issue. Sample can be found here The complete code is Script $(function(){ $(":input:last","#div1").bind("keydown", function(e){ if ( e.keyCode === 9 ) { var firstElem = $(":input:first","#div1"); firstElem.focus(); } }); }); CSS input.red { width: 200px; border: solid 1px red; } input { width: 200px; } HTML <input type="text" class="red" /> <div id="div1"> <input type="text" id="txt1" /> <select id="sel1"> <option>1</option> </select> <input type="text" id="txt2" /> </div> Any help would be appreciated. Thanks

  Read the article

• iPhone static library Clang/LLVM error: non_lazy_symbol_pointers

  - by Bekenn

  After several hours of experimentation, I've managed to reduce the problem to the following example (C++): extern "C" void foo(); struct test { ~test() { } }; void doTest() { test t; // 1 foo(); // 2 } This is being compiled for iOS devices in XCode 4.2, using the provided Clang compiler (Apple LLVM compiler 3.0) and the iOS 5.0 SDK. The project is configured as a Cocoa Touch Static Library, and "Enable Linking With Shared Libraries" is set to No because I'm building an AIR native extension. The function foo is defined in another external library. (In my actual project, this would be any of the C API functions defined by Adobe for use in AIR native extensions.) When attempting to compile this code, I get back the error: FATAL:incompatible feature used: section type non_lazy_symbol_pointers (must specify "-dynamic" to be used) clang: error: assembler command failed with exit code 1 (use -v to see invocation) The error goes away if I comment out either of the lines marked 1 or 2 above, or if I change the build setting "Enable Linking With Shared Libraries" to Yes. (However, if I change the build setting, then I get multiple ld warning: unexpected srelocation type 9 warnings when linking the library into the final project, and the application crashes when running on the device.) The build error also goes away if I remove the destructor from test. So: Is this a bug in Clang? Am I missing some all-important and undocumented build setting? The interaction between an externally-provided function and a struct with a destructor is very peculiar, to say the least.

  Read the article

• Type-conditional controls in Haskell

  - by estanford

  I'm going through the 99 Haskell problems to build my proficiency with the language. On problem 7 ("Flatten a nested list structure"), I found myself wanting to define a conditional behavior based on the type of argument passed to a function. That is, since *Main> :t 1 1 :: (Num t) => t *Main> :t [1,2] [1,2] :: (Num t) => [t] *Main> :t [[1],[2]] [[1],[2]] :: (Num t) => [[t]] (i.e. lists nested at different levels have different data types) it seems like I should be able to write a function that can read the type of the argument, and then behave accordingly. My first attempt was along these lines: listflatten l = do if (:t l) /= ((Num t) => [t]) then listflatten (foldl (++) [] l) else id l But when I try to do that, Haskell returns a parse error. Is Haskell flexible enough to allow this sort of type manipulation, do I need to find another way?

  Read the article

• jquery appendTo form

  - by user313271

  jquery $(function(){ $('#4').click(function() { $('<input name="if4" type="text" value="other price>"').appendTo('form'); }); }); html <form> < input name="name" type="text" value="Enter your name" /><br /> < input name="contacts" type="text" value="Contact info" /><br /> < select name="services"> < option value="1">1</option> < option value="2">2</option> < option value="3">3</option> < option id="4" value="Other">4</option> < /select><br /> < textarea name="description">Description</textarea><br /> < /form> What i want to do: When i press on option value nr 4, there appears is new input field, this thing works fine. But how can I to change order where input field gonna appear, because now it appears after textfield, how can i put it after ? Thank you

  Read the article

• How to set QNetworkReply properties to get correct NCBI pages?

  - by Claire Huang

  I try to get this following url using the downloadURL function: http://www.ncbi.nlm.nih.gov/nuccore/27884304 But the data is not as what we can see through the browser. Now I know it's because that I need to give the correct information such as browser, how can I know what kind of information I need to set, and how can I set it? (By setHeader function??) In VC++, we can use CInternetSession and CHttpConnection Object to get the correct information without setting any other detail information, is there any similar way in Qt or other cross-platform C++ network lib?? (Yes, I need the the cross-platform property.) QNetworkReply::NetworkError downloadURL(const QUrl &url, QByteArray &data) { QNetworkAccessManager manager; QNetworkRequest request(url); request.setHeader(QNetworkRequest::ContentTypeHeader ,"Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1.7) Gecko/20091221 Firefox/3.5.7 (.NET CLR 3.5.30729)"); QNetworkReply *reply = manager.get(request); QEventLoop loop; QObject::connect(reply, SIGNAL(finished()), &loop, SLOT(quit())); loop.exec(); QVariant statusCodeV = reply->attribute(QNetworkRequest::RedirectionTargetAttribute); QUrl redirectTo = statusCodeV.toUrl(); if (!redirectTo.isEmpty()) { if (redirectTo.host().isEmpty()) { const QByteArray newaddr = ("http://"+url.host()+redirectTo.encodedPath()).toAscii(); redirectTo.setEncodedUrl(newaddr); redirectTo.setHost(url.host()); } return (downloadURL(redirectTo, data)); } if (reply->error() != QNetworkReply::NoError) { return reply->error(); } data = reply->readAll(); delete reply; return QNetworkReply::NoError; }

  Read the article

• Reading email address from contacts fails with weird memory issue

  - by CapsicumDreams

  Hi all, I'm stumped. I'm trying to get a list of all the email address a person has. I'm using the ABPeoplePickerNavigationController to select the person, which all seems fine. I'm setting my ABRecordRef personDealingWith; from the person argument to - (BOOL)peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker shouldContinueAfterSelectingPerson:(ABRecordRef)person property:(ABPropertyID)property identifier:(ABMultiValueIdentifier)identifier { and everything seems fine up till this point. The first time the following code executes, all is well. When subsequently run, I can get issues. First, the code: // following line seems to make the difference (issue 1) // NSLog(@"%d", ABMultiValueGetCount(ABRecordCopyValue(personDealingWith, kABPersonEmailProperty))); // construct array of emails ABMultiValueRef multi = ABRecordCopyValue(personDealingWith, kABPersonEmailProperty); CFIndex emailCount = ABMultiValueGetCount(multi); if (emailCount 0) { // collect all emails in array for (CFIndex i = 0; i < emailCount; i++) { CFStringRef emailRef = ABMultiValueCopyValueAtIndex(multi, i); [emailArray addObject:(NSString *)emailRef]; CFRelease(emailRef); } } // following line also matters (issue 2) CFRelease(multi); If compiled as written, the are no errors or static analysis problems. This crashes with a *** -[Not A Type retain]: message sent to deallocated instance 0x4e9dc60 error. But wait, there's more! I can fix it in either of two ways. Firstly, I can uncomment the NSLog at the top of the function. I get a leak from the NSLog's ABRecordCopyValue every time through, but the code seems to run fine. Also, I can comment out the CFRelease(multi); at the end, which does exactly the same thing. Static compilation errors, but running code. So without a leak, this function crashes. To prevent a crash, I need to haemorrhage memory. Neither is a great solution. Can anyone point out what's going on?

  Read the article

• Is there a way to get an ASMX Web Service created in VS 2005 to receive and return JSON?

  - by Ben McCormack

  I'm using .NET 2.0 and Visual Studio 2005 to try to create a web service that can be consumed both as SOAP/XML and JSON. I read Dave Ward's Answer to the question How to return JSON from a 2.0 asmx web service (in addition to reading other articles at Encosia.com), but I can't figure out how I need to set up the code of my asmx file in order to work with JSON using jQuery. Two Questions: How do I enable JSON in my .NET 2.0 ASMX file? What's a simple jQuery call that could consume the service using JSON? Also, I notice that since I'm using .NET 2.0, I i'm not able to implement using System.Web.Script.Services.ScriptService. Here's my C# code for the demo ASMX service: using System; using System.Web; using System.Collections; using System.Web.Services; using System.Web.Services.Protocols; /// <summary> /// Summary description for StockQuote /// </summary> [WebService(Namespace = "http://tempuri.org/")] [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)] public class StockQuote : System.Web.Services.WebService { public StockQuote () { //Uncomment the following line if using designed components //InitializeComponent(); } [WebMethod] public decimal GetStockQuote(string ticker) { //perform database lookup here return 8; } [WebMethod] public string HelloWorld() { return "Hello World"; } } Here's a snippet of jQuery I found on the internet and tried to modify: $(document).ready(function(){ $("#btnSubmit").click(function(event){ $.ajax({ type: "POST", contentType: "application/json; charset=utf-8", url: "http://bmccorm-xp/WebServices/HelloWorld.asmx", data: "", dataType: "json" }) event.preventDefault(); }); });

  Read the article

• After Adding "readonly" attribute on text box not able to remove it in one event

  - by Sreedhar K

  Steps to repro USE Internet Explorer Check unlimited check box Click on text box (It will remove tick/check from check box) Try to enter text in text box We cannot enter in the text box 4. Click again on the text box. Now we will be able to enter text in the text box We tried by 1. Making attribute readOnly to flase i.e. $('#myinput').attr('readOnly', false); 2. Calling $('#myinput').click(); Below is the HTML code <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Make input read only</title> <script type="text/javascript" src="http://ajax.microsoft.com/ajax/jquery/jquery-1.4.4.min.js"></script> </head> <body> <input id="myinput" type="text" /> <input id="mycheck" type="checkbox" /> <script type="text/javascript"> /*oncheck box click*/ $('#mycheck').click(function () { if ($(this).attr('checked')) { $('#myinput').attr('readOnly', 'readOnly'); } else { $('#myinput').removeAttr('readOnly'); /* also tried * $('#myinput').attr('readOnly', false); * $('#myinput').attr('readOnly', ''); */ } }); /*on text box click*/ $('#myinput').click(function () { $('#mycheck').removeAttr('checked'); $('#myinput').removeAttr('readOnly'); /* also tried * $('#myinput').attr('readOnly', false); * $('#myinput').attr('readOnly', ''); */ }); </script> </body> </html> Live copy

  Read the article

• HttpURLConnection: What's the deal with having to read the whole response?

  - by stormin986

  My current problem is very similar to this one. I have a downloadFile(URL) function that creates a new HttpURLConnection, opens it, reads it, returns the results. When I call this function on the same URL multiple times, the second time around it almost always returns a response code of -1 (But throws no exception!!!). The top answer in that question is very helpful, but there are a few things I'm trying to understand. So, if setting http.keepAlive to false solves the problem, it indicates what exactly? That the server is responding in a way that violates the http protocol? Or more likely, my code is violating the protocol in some way? What will the trace tell me? What should I look for? And what's the deal with this: You need to read everything from error stream. Otherwise, it's going to confuse next connection and that's the cause of -1. Does this mean if the response is some type of error (which would be what response code(s)?), the stream HAS to be fully read? Also, every time I am attempting an http request I am basically creating a new connection, and then disconnect()ing it at the end. However, in my case I'm not getting a 401 or whatever. It's always a 200. But my second connection almost always fails. Does this mean there's some other data I should be reading that I'm not (in a similar manner that the error stream must be fully read)? Please help shed some light on this? I feel like there's some fundamental http protocol understanding I'm missing.

  Read the article

• Multiplication of 2 positive numbers giving a negative result

  - by krandiash

  My program is an implementation of a bloom filter. However, when I'm storing my hash function results in the bit array, the function (of the form f(i) = (a*i + b) % m where a,b,i,m are all positive integers) is giving me a negative result. The problem seems to be in the calculation of a*i which is coming out to be negative. Ignore the print statements in the code; those were for debugging. Basically, the value of temp in this block of code is coming out to be negative and so I'm getting an ArrayOutOfBoundsException. m is the bit array length, z is the number of hash functions being used, S is the set of values which are members of this bloom filter and H stores the values of a and b for the hash functions f1, f2, ..., fz. public static int[] makeBitArray(int m, int z, ArrayList<Integer> S, int[] H) { int[] C = new int[m]; for (int i = 0; i < z; i++) { for (int q = 0; q < S.size() ; q++) { System.out.println(H[2*i]); int temp = S.get(q)*(H[2*i]); System.out.println(temp); System.out.println(S.get(q)); System.out.println(H[2*i + 1]); System.out.println(m); int t = ((H[2*i]*S.get(q)) + H[2*i + 1])%m; System.out.println(t); C[t] = 1; } } return C; } Any help is appreciated.

  Read the article

• How can I make this method more Scalalicious

  - by Neil Chambers

  I have a function that calculates the left and right node values for some collection of treeNodes given a simple node.id, node.parentId association. It's very simple and works well enough...but, well, I am wondering if there is a more idiomatic approach. Specifically is there a way to track the left/right values without using some externally tracked value but still keep the tasty recursion. /* * A tree node */ case class TreeNode(val id:String, val parentId: String){ var left: Int = 0 var right: Int = 0 } /* * a method to compute the left/right node values */ def walktree(node: TreeNode) = { /* * increment state for the inner function */ var c = 0 /* * A method to set the increment state */ def increment = { c+=1; c } // poo /* * the tasty inner method * treeNodes is a List[TreeNode] */ def walk(node: TreeNode): Unit = { node.left = increment /* * recurse on all direct descendants */ treeNodes filter( _.parentId == node.id) foreach (walk(_)) node.right = increment } walk(node) } walktree(someRootNode) Edit - The list of nodes is taken from a database. Pulling the nodes into a proper tree would take too much time. I am pulling a flat list into memory and all I have is an association via node id's as pertains to parents and children. Adding left/right node values allows me to get a snapshop of all children (and childrens children) with a single SQL query. The calculation needs to run very quickly in order to maintain data integrity should parent-child associations change (which they do very frequently). In addition to using the awesome Scala collections I've also boosted speed by using parallel processing for some pre/post filtering on the tree nodes. I wanted to find a more idiomatic way of tracking the left/right node values. After looking at the answers listed I have settled on this synthesised version: def walktree(node: TreeNode) = { def walk(node: TreeNode, counter: Int): Int = { node.left = counter node.right = treeNodes .filter( _.parentId == node.id) .foldLeft(counter+1) { (counter, curnode) => walk(curnode, counter) + 1 } node.right } walk(node,1) }

  Read the article

• Updates to fullcalendar events (through updateEvent) not maintaining across ajax month changes

  - by user549615

  Hey there. I have the calendar configured to allow me to edit and add (drag/drop) calendar events. I use .fullCalendar('updateEvent', theEvent) to edit an event, and it immediately updates on the page. Excellent. If I move to another month and then move back (get via ajax), that change is undone. By contrast, if I add a new event by drag/drop using: .fullCalendar('renderEvent', newEventObject, true); it appears on the calendar, and if I move to another month, and move back, it maintains. If I edit this newly added event object, and move to another month and back, the updates are retained! So the "stickiness" of edits seem to work on newly added events, but not events that were pulled via ajax (since it just pulls a fresh version via ajax when the month changes). My calendar config is: $('#calendar').fullCalendar({ theme: true, header: { left: "prev,next today", center: 'title', right: "today prev,next" }, selectable: true, selectHelper: true, select: calendarSelect, droppable: true, drop: calendarDrop, events:getCalendarData, eventClick:calendarEventClicked }); I tried setting editable: true, as well, but no dice. I noticed that if I view "event.source" on one of the ajax pulled events, it shows me a function, and if i read the source attribute on one of the "added" events, it reads [object]. So I tried setting the event.source of the event being added, to that same event object: curCalendarEvent.source = curCalendarEvent But no dice. It sets, but when I move back month forward again, it returns to the function as a source. I tried adding lazyFetching: false to my calendar config, but that didn't help. I even tried a .fullCalendar('renderEvent', curCalendarEvent, true); on the existing "edited" event to see if I could get "stick" to work, and it didn't help. The only thing I can think of doing is deleting the event flat out and recreating it. Any help would be appreciated. -Brian

  Read the article

< Previous Page | 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639  | Next Page >