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  • Does Google Maps API v3 allow larger zoom values ?

    - by Dr1Ku
    If you use the satellite GMapType using this Google-provided example in v3 of the API, the maximum zoom level has a scale of 2m / 10ft , whereas using the v2 version of another Google-provided example (had to use another one since the control-simple doesn't have the scale control) yields the maximum scale of 20m / 50ft. Is this a new "feature" of v3 ? I have to mention that I've tested the examples in the same GLatLng regions - so my guess is that tile detail level doesn't influence it, am I mistaken ? As mentioned in another question, v3 is to be considered of very Labs-y/beta quality, so use in production should be discouraged for the time being. I've been drawn to the subject since I have to "increase the zoom level of a GMap", the answers here seem to suggest using GTileLayer, and I'm considering GMapCreator, although this will involve some effort. What I'm trying to achieve is to have a larger zoom level, a scale of 2m / 10ft would be perfect, I have a map where the tiles aren't that hi-res and quite a few markers. Seeing that the area doesn't have hi-res tiles, the distance between the markers is really tiny, creating some problematic overlapping. Or better yet, how can you create a custom Map which allows higher zoom levels, as by the Google Campus, where the 2m / 10ft scale is achieved, and not use your own tileserver ? I've seen an example on a fellow Stackoverflower's GMaps sandbox , where the tiles are manually created based on the zoom level. I don't think I'm making any more sense, so I'm just going to end this big question here, I've been wondering around trying to find a solution for hours now. Hope that someone comes to my aid though ! Thank you in advance !

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  • Ruby on rails generates tests for you. Do those give a false sense of a safety net?

    - by Hamish Grubijan
    Disclaimer: I have not used RoR, and I have not generated tests. But, I will still dare to post this question. Quality Assurance is theoretically impossible to get 100% right in general (Undecidable problem ;), and it is hard in practice. So many developers do not understand that writing good automated tests is an art, and it is hard. When I hear that RoR generates the tests for you, I get very skeptical. It cannot be that easy. Testing is a general concept; it applies across languages. So does the concept of code contracts, it is similar for languages that support it. Code contracts do not generate themselves. The programmer must add the requirements and the promises manually, after doing some thinking about the algorithm / function. If a human gets it wrong, then the tools will propagate the error. Similarly with testing - it takes human judgement about what should happen. Tests do not write themselves, and we are far from the day when a business analyst can just have a conversation with a computer and tell it informally what the requirements are and have the computer do all the work. There is no magic ... how can RoR generate good tests for you? Please shed some light on this. Opinions are ok, for this is a community wiki. Thanks!

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  • How to create an array of User Objects in Powerbuilder?

    - by TomatoSandwich
    The application has many different windows. One is a single 'row' window, which relates to a single row of data in a table, say 'Order'. Another is a 'multiple row' datawindow, where each row in the datawindow relates to a row in 'Order', used for spreadsheet-like data entry Functionality extentions have create a detail table, say 'Suppliers', where an order may require multiple suppliers to fill the order. Normally, suppliers are not required, because they are already in the warehouse (0), or there may need to be an order to a supplier to complete an order (1), or multiple suppliers may need to be contacted (more than one). As a single order is entered, once the items are entered, a User Object is populated depending on the status of the items in the warehouse. If required, this creates a 1-to-many relationship between the order and the "backorder". In the PB side, there is a single object uo_backorder which is created on the window, and is referenced by the window depending on the command (button popup, save, etc) I have been tasked to create the 'backorder' functionality on the spreadsheet-line window. Previously the default options for backorders were used when orders were created from the multiple-row window. A workaround already exists where unconfirmed orders could be opened in the single-row window, and the backorder information manipulated there. However, the userbase wants this functionality on the one window. Since the functionality of uo_backorder already exists, I assumed I could just copy the code from the single-order window, but create an array of uo_backorder objects to cope with multiple rows. I tried the following: forward .. type uo_backorder from popupdwpb within w_order_conv end type end forward global type w_order_conv from singleform .. uo_backorder uo_backorder end type type variables .. uo_backorder iuo_backorders[] end variables .. public function boolean iuo_backorders(); .. long ll_count ll_count = UpperBound(iuo_backorders[]) iuo_backorders[ll_count+1] = uo_backorder //THIS ISN'T RIGHT lb_ok = iuo_backorders[ll_count+1].init('w_backorder_popup', '', '', '', 'd_backorder_popup', sqlca, useTransObj()) return lb_ok end function .. <utility functions> .. type uo_backorder from popupdwpb within w_order_conv integer x = 28 integer y = 28 integer width ... end type on uo_backorder.destroy call popupdwpb::destroy end on The issue I face now is that the code commented "THIS ISN'T RIGHT" isn't correct. It is associating the visual object placed on the face of the main window to each array cell, so anytime I reference the array cell object it's actually referencing the one original object, not the new instances that I (thought) I was creating. If I change the code iuo_backorders[ll_count+1] = create uo_backorder the code doesn't run, saying that it failed to initalize the popup window. I think this is related to the class being called the same thing as the instance. What I want to end up with is an array of uo_backorder objects that I can associate to each row of my datawindow (first row = first cell, etc). I think the issue lays in the fact it's a visual object, and I can't seem to get the window to run without adding a dummy object on the face of the window (functionality from the original single-row window). Since it's a VISUAL object, does the object indeed need to be embedded on the windowface for the window to know what object I'm talking about? If so, how does one create multiple windowface objects (one to many, depending on when a row is added)? Don't hesitate to inquire regarding any more information this issue may require from myself. I have no idea what is 'standard' or 'default' in PB, or what is custom and needs more explaining.

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  • Results Delphi users who wish to use HID USB in windows

    - by Lex Dean
    Results Delphi users who wish to use HID USB in windows HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB Contain a list if keys containing vender ID and Producer ID numbers that co inside with the USB web sites data base. These numbers and the GUID held within the key gives important information to execute the HID.dll that is otherwise imposable to execute. The Control Panel/System/Hardware/Device manager/USB Serial Bus Controllers/Mass Storage Devices/details simply lists the registry data. The access to the programmer has been documented through the API32.dll with a number of procedures that accesses the registry. But that is not the problem yet it looks like the problem!!!!!!!!! The key is info about the registry and how to use it. These keys are viewed in RegEdit.exe it’s self. Some parts of the registry like the USB have been given a windows security system type of protection with a Aurthz.dll to give the USB read and right protection. Even the api32.dll. Now only Microsoft give out these details and we all know Microsoft hate Delphi. Now C users have enjoyed this access for over 10 years now. Now some will make out that you should never give out such information because some idiot may make a stupid virus (true), but the argument is also do Delphi users need to be denied USB access for another ten years!!!!!!!!!!!!. What I do not have is the skill in is assembly code. I’m seeking for some one that can trace how regedit.exe gets its access through Aurthz.dll to access the USB data. So I’m asking all who reads this:- to partition any friend they have that has this skill to get the Aurthz.dll info needed. I find communicating with USB.org they reply when they have a positive email reply but do not bother should their email be a slightly negative policy. For all simple reasoning, all that USB had to do was to have a secure key as they have done, and to update the same data into a unsecured key every time the data is changed for USB developer to access. And not bother developers access to Aurthz.dll. Authz.dll with these functions for USB:- AuthzFreeResourceManager AuthzFreeContext AuthzAccessCheck(Flags: DWORD; AuthzClientContext: AUTHZ_CLIENT_CONTEXT_HANDLE; pRequest: PAUTHZ_ACCESS_REQUEST; AuditInfo: AUTHZ_AUDIT_INFO_HANDLE; pSecurityDescriptor: PSECURITY_DESCRIPTOR; OptionalSecurityDescriptorArray: PSECURITY_DESCRIPTOR; OptionalSecurityDescriptorCount: DWORD; //OPTIONAL, Var pReply: AUTHZ_ACCESS_REPLY; pAuthzHandle: PAUTHZ_ACCESS_CHECK_RESULTS_HANDLE): BOOl; AuthzInitializeContextFromSid(Flags: DWORD; UserSid: PSID; AuthzResourceManager: AUTHZ_RESOURCE_MANAGER_HANDLE; pExpirationTime: int64; Identifier: LUID; DynamicGroupArgs: PVOID; pAuthzClientContext: PAUTHZ_CLIENT_CONTEXT_HANDLE): BOOL; AuthzInitializeResourceManager(flags: DWORD; pfnAccessCheck: PFN_AUTHZ_DYNAMIC_ACCESS_CHECK; pfnComputeDynamicGroups: PFN_AUTHZ_COMPUTE_DYNAMIC_GROUPS; pfnFreeDynamicGroups: PFN_AUTHZ_FREE_DYNAMIC_GROUPS; ResourceManagerName: PWideChar; pAuthzResourceManager: PAUTHZ_RESOURCE_MANAGER_HANDLE): BOOL; further in Authz.h on kolers.com J Lex Dean.

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  • When am I ready for contracting work?

    - by Kirk Broadhurst
    What skills are required to work on a temp / contracting basis, and how does a developer know when they are ready to work in these circumstances? I have some colleagues who are suggesting contracting work is 'the way to go'; the pay is significantly better. It appears that when a permanent position pays (X times $10k) per year, the corresponding contract position pays almost $X per hour - which is close to twice as much. I look forward to doing this type of work as an experienced expert, but worry that by doing so right now I'd be turning away learning and development opportunities. My assumptions about contract work are the following: less / zero money invested on training and development less concern for job satisfaction and learning ("they won't be here in 12 months") possibly less concern about the overall quality of the project ("we won't be here in 12 months") There are similar questions on stack overflow at the moment but what I've really looking for is: What does the developer give up by moving to contract work? Is it preferable to have structured learning in a permanent position rather than seat-of-the-pants learning in a contract position? What skill leve should the contractor have before making the move? Is there still the same kind of growth in contracting that there is in permanent positions? Rightly or wrongly, I see this as a choice between $ (contracting) and learning / development (permanent). Is this fair?

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  • How to Watch Youtube Videos on PSP with iMoviesoft FLV Converter

    - by user312417
    Do you have worried about it? You can not watch Youtube videos anytime, anywhere.It is so boring on the way to work and home.How you want to be able to enjoy the wonderful Youtube Video on PSP that you can watch them on the way to home, home on bus. This artice will tell you about how to convert Youtube VIdeos to PSP Player, take "Alice.in.Wonderland" as an example, We can use iMoviesoft FLV Converter to convert it to PSP video file. iMoviesoft FLV Converter is a powerful FLV Converter which can convert FLV and YouTube Videos to almost any video formats, with excellent conversion speed and quality, such as converting FLV to MP4, FLV to AVI, FLV to WMV, FLV to MPEG etc. Furthermore, it can also easily convert video files to some popular audio formats, such as WMA, MP3, M4A, AAC, etc. You can convert FLV and YouTube videos to PSP, iPod, iPhone, Zune video player and other portable video players. After easy and wonderful conversion, you can fully enjoy videos on your PSP, iPod, iPhone and some other portable video players. Besides, you can also use it to join videos. Merge several videos into one output PSP video and enjoy them conveniently. You can also trim your favarite clips or remove the video black edges by [iMoviesoft FLV Converter. Hope to help every Video Enthusiasts.

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  • jQuery DatePicker - 'fake' click on page load

    - by Danny
    Hey! I've got a quick question about the jQuery UI DatePicker. When I load the page, defaultDate: 0 will work fine with selecting the current day's date. I would like to create a 'fake' click on the date so it will execute my JavaScript function and retrieve information from the database. I tried calling the function when the page loads but that doesn't work. $(document).ready(function(){ $("#datepicker").datepicker({ gotoCurrent: false, onSelect: function(date, inst) { ajaxFunction(date); }, dateFormat: 'dd-mm-yy', defaultDate: 0, changeMonth: true, changeYear: true }); }); //Browser Support Code function ajaxFunction(date){ var ajaxRequest; // The variable that makes Ajax possible! try{ // Opera 8.0+, Firefox, Safari ajaxRequest = new XMLHttpRequest(); } catch (e){ // Internet Explorer Browsers try{ ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP"); } catch (e) { try{ ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP"); } catch (e){ // Something went wrong alert("Your browser broke!"); return false; } } } // Create a function that will receive data sent from the server ajaxRequest.onreadystatechange = function(){ if(ajaxRequest.readyState == 4){ var ajaxDisplay = document.getElementById('ajaxDiv'); ajaxDisplay.innerHTML = ajaxRequest.responseText; } } var queryString = "?date=" + date; ajaxRequest.open("GET", "getDiary.php" + queryString, true); ajaxRequest.send(null); } function ajaxAdd(){ var ajaxRequest; // The variable that makes Ajax possible! try{ // Opera 8.0+, Firefox, Safari ajaxRequest = new XMLHttpRequest(); } catch (e){ // Internet Explorer Browsers try{ ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP"); } catch (e) { try{ ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP"); } catch (e){ // Something went wrong alert("Your browser broke!"); return false; } } } var day1 = $("#datepicker").datepicker('getDate').getDate(); var day2 = (day1 < 10) ? '0' + day1 : day1; var month1 = $("#datepicker").datepicker('getDate').getMonth() + 1; var month2 = (month1 < 10) ? '0' + month1 : month1; var year1 = $("#datepicker").datepicker('getDate').getFullYear(); var year2 = (year1 < 1000) ? year1 + 1900 : year1; var fullDate = day2 + "-" + month2 + "-" + year2; var queryString = "?breakfast=" + diary1.breakfast.value; queryString = queryString + "&lunch=" + diary1.lunch.value; queryString = queryString + "&dinner=" + diary1.dinner.value; queryString = queryString + "&date=" + fullDate; ajaxRequest.open("GET", "addDiary.php" + queryString, true); ajaxRequest.send(null); alert("Added value to database!"); diary1.breakfast.value = ""; diary1.lunch.value = ""; diary1.dinner.value = ""; ajaxFunction(fullDate); } I have pasted my DatePicker class, and the two functions that are used (one to retrieve information from the database, and one to store). Basically I want to mirror the onSelect: function on the DatePicker, but when the page first loads. Thanks!

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  • Vertical textes inside of table headers with respect of a JavaScript based on SVG library

    - by Oleg
    I use jqGrid with many columns contains Boolean information, which are displayed as checkboxes inside of table (see http://www.ok-soft-gmbh.com/VerticalHeaders/TestFixedO.htm as an example). To display information more compact I use vertical column headers. It works very well and works in jqGrid in all browsers (see my discussion with Tony Tomov in jqGrid forum http://www.trirand.com/blog/?page_id=393/feature-request/headers-with-vertical-orientation/), but in IE vertical texts looks not nice enough. I was asked from users why the texted displayed so strange. So I think about using a JavaScript based SVG library like SVG Web ( http://code.google.com/p/svgweb/ ) or Raphaël ( http://raphaeljs.com/ ). SVG is very powerful and it is difficult to find a good example is not very easy. I need only display vertical texts (-90 grad, from bottom to up) and use if possible without working in mode of absolute position. So one more times my question: I need have a possibility to display vertical texts (-90 grad rotation) inside of <td> element of table header. I want use a JavaScript based SVG library like SVG Web or Raphaël. The solution must support on IE6. Have somebody a good reference to example which could help me to do this? If somebody post a whole solution of the problem I would be happy. To be exact here is my current solution: I define .rotate { -webkit-transform: rotate(-90deg); /* Safari, Chrome */ -moz-transform: rotate(-90deg); /* Firefox */ -o-transform: rotate(-90deg); /* Opera starting with 10.50 */ /* Internet Explorer: */ filter: progid:DXImageTransform.Microsoft.BasicImage(rotation=3); } define RotateCheckboxColumnHeaders function var RotateCheckboxColumnHeaders = function (grid, headerHeight) { // we use grid as context (if one have more as one table on tnhe page) var trHead = $("thead:first tr", grid.hdiv); var cm = grid.getGridParam("colModel"); $("thead:first tr th").height(headerHeight); headerHeight = $("thead:first tr th").height(); for (var iCol = 0; iCol < cm.length; iCol++) { var cmi = cm[iCol]; if (cmi.formatter === 'checkbox') { // we must set width of column header div BEFOR adding class "rotate" to // prevent text cutting based on the current column width var headDiv = $("th:eq(" + iCol + ") div", trHead); headDiv.width(headerHeight).addClass("rotate"); if (!$.browser.msie) { if ($.browser.mozilla) { headDiv.css("left", (cmi.width - headerHeight) / 2 + 3).css("bottom", 7); } else { headDiv.css("left", (cmi.width - headerHeight) / 2); } } else { var ieVer = jQuery.browser.version.substr(0, 3); // Internet Explorer if (ieVer !== "6.0" && ieVer !== "7.0") { headDiv.css("left", cmi.width / 2 - 4).css("bottom", headerHeight / 2); $("span", headDiv).css("left", 0); } else { headDiv.css("left", 3); } } } } }; And include a call like RotateCheckboxColumnHeaders(grid, 110); after creating jqGrid.

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  • RSA Encrypt / Decrypt Problem in .NET

    - by Brendon Randall
    I'm having a problem with C# encrypting and decrypting using RSA. I have developed a web service that will be sent sensitive financial information and transactions. What I would like to be able to do is on the client side, Encrypt the certain fields using the clients RSA Private key, once it has reached my service it will decrypt with the clients public key. At the moment I keep getting a "The data to be decrypted exceeds the maximum for this modulus of 128 bytes." exception. I have not dealt much with C# RSA cryptography so any help would be greatly appreciated. This is the method i am using to generate the keys private void buttonGenerate_Click(object sender, EventArgs e) { string secretKey = RandomString(12, true); CspParameters param = new CspParameters(); param.Flags = CspProviderFlags.UseMachineKeyStore; SecureString secureString = new SecureString(); byte[] stringBytes = Encoding.ASCII.GetBytes(secretKey); for (int i = 0; i < stringBytes.Length; i++) { secureString.AppendChar((char)stringBytes[i]); } secureString.MakeReadOnly(); param.KeyPassword = secureString; RSACryptoServiceProvider rsaProvider = new RSACryptoServiceProvider(param); rsaProvider = (RSACryptoServiceProvider)RSACryptoServiceProvider.Create(); rsaProvider.KeySize = 1024; string publicKey = rsaProvider.ToXmlString(false); string privateKey = rsaProvider.ToXmlString(true); Repository.RSA_XML_PRIVATE_KEY = privateKey; Repository.RSA_XML_PUBLIC_KEY = publicKey; textBoxRsaPrivate.Text = Repository.RSA_XML_PRIVATE_KEY; textBoxRsaPublic.Text = Repository.RSA_XML_PUBLIC_KEY; MessageBox.Show("Please note, when generating keys you must sign on to the gateway\n" + " to exhange keys otherwise transactions will fail", "Key Exchange", MessageBoxButtons.OK, MessageBoxIcon.Information); } Once i have generated the keys, i send the public key to the web service which stores it as an XML file. Now i decided to test this so here is my method to encrypt a string public static string RsaEncrypt(string dataToEncrypt) { string rsaPrivate = RSA_XML_PRIVATE_KEY; CspParameters csp = new CspParameters(); csp.Flags = CspProviderFlags.UseMachineKeyStore; RSACryptoServiceProvider provider = new RSACryptoServiceProvider(csp); provider.FromXmlString(rsaPrivate); ASCIIEncoding enc = new ASCIIEncoding(); int numOfChars = enc.GetByteCount(dataToEncrypt); byte[] tempArray = enc.GetBytes(dataToEncrypt); byte[] result = provider.Encrypt(tempArray, true); string resultString = Convert.ToBase64String(result); Console.WriteLine("Encrypted : " + resultString); return resultString; } I do get what seems to be an encrypted value. In the test crypto web method that i created, i then take this encrypted data, try and decrypt the data using the clients public key and send this back in the clear. But this is where the exception is thrown. Here is my method responsible for this. public string DecryptRSA(string data, string merchantId) { string clearData = null; try { CspParameters param = new CspParameters(); param.Flags = CspProviderFlags.UseMachineKeyStore; RSACryptoServiceProvider rsaProvider = new RSACryptoServiceProvider(param); string merchantRsaPublic = GetXmlRsaKey(merchantId); rsaProvider.FromXmlString(merchantRsaPublic); byte[] asciiString = Encoding.ASCII.GetBytes(data); byte[] decryptedData = rsaProvider.Decrypt(asciiString, false); clearData = Convert.ToString(decryptedData); } catch (CryptographicException ex) { Log.Error("A cryptographic error occured trying to decrypt a value for " + merchantId, ex); } return clearData; } If anyone could help me that would be awesome, as i have said i have not done much with C# RSA encryption/decryption.

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  • Viewing a large-resolution VNC server through a small-resolution viewer in Ubuntu

    - by Madiyaan Damha
    I have two Ubuntu computers, one with a large screen resolution (1920x1600) that is running default ubuntu vnc server. I have another computer that has a resolution of about 1200x1024 that I use to vnc into the server (I use the default ubuntu vnc viewer). Now everything works fine except there are annoying scrollbars in the viewer because the server's desktop resolution is so much higher than the viewer's. Is there a way to: 1) Scale the server's desktop down to the viewer's resolution. I know there will be a loss of image quality, but I am willing to try it out. This should be something like how windows media player or vlc scales down the window (and does some interpolation of pixels). 2) Automatically shrink the resolution of the server to the client's when I connect and scale the resolution back when I disconnect. This seems like a less attractive solution. 3) Any other solution that gurus out there use? I am sure someone has experienced this before (annoying scroll bars) so there must be a solution out there. Thanks,

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  • Fade Out an <ul> and Fade In Info From DB

    - by NessDan
    On my portfolio page I have this setup: <div id="portfolio"> <ul id="sites"> <li> <h3><a href="#">MotorSomethin</a></h3> <img src="http://dummyimage.com/265x100/000/fff" /> <p> We tried going for a very dark but flashy look for this website. Hence the reason we used flash. </p> </li> <li> <h3><a href="#">MotorSomethin</a></h3> <img src="http://dummyimage.com/265x100/000/fff" /> <p> We tried going for a very dark but flashy look for this website. Hence the reason we used flash. </p> </li> <li> <h3><a href="#">MotorSomethin</a></h3> <img src="http://dummyimage.com/265x100/000/fff" /> <p> We tried going for a very dark but flashy look for this website. Hence the reason we used flash. </p> </li> <li> <h3><a href="#">MotorSomethin</a></h3> <img src="http://dummyimage.com/265x100/000/fff" /> <p> We tried going for a very dark but flashy look for this website. Hence the reason we used flash. </p> </li> <li> <h3><a href="#">MotorSomethin</a></h3> <img src="http://dummyimage.com/265x100/000/fff" /> <p> We tried going for a very dark but flashy look for this website. Hence the reason we used flash. </p> </li> </ul> </div> So imagine a grid, 2 sites per line. I want to use jQuery so that when I click the H3, the image, or the paragraph inside the LIE(which are all information about a certain site), it would fade out the entire UL, then grab info about that site from our database. I think this requires AJAX but I don't have much experience with it. I'm also confused on how to use jQuery to write the new HTML after the information is grabbed.

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  • Converting PDF to images using ImageMagick.NET - how to set the DPI

    - by Avi Pinto
    Hi, I'm trying to convert pdf files to images. ImageMagick is a great tool, and using the command line tool gets me desired result. but i need to do this in my code, So added a reference to http://imagemagick.codeplex.com/ And the following code sample renders each page of the pdf as an image: MagickNet.InitializeMagick(); using (ImageList im = new ImageList()) { im.ReadImages(@"E:\Test\" + fileName + ".pdf"); int count = 0; foreach (Image image in im) { image.Quality = 100; image.CompressType = mageMagickNET.CompressionType.LosslessJPEGCompression; image.Write(@"E:\Test\" + fileName + "-" + count.ToString() + ".jpg"); ++count; } } The problem: IT LOOKS LIKE CRAP the rendered image is hardly readable. the problem i realized is it uses the default 72 DPI of ImageMagick. and i can't find a way to set it(96dpi or 120dpi gives good results) via the .Net wrapper. Am I missing something , or there is really no way to set it via this wrapper? Thanks

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  • Sporadic EXC_BAD_INSTRUCTION (SIGILL) when in 64 bit mode

    - by Ger Teunis
    For some reason for a low-number of users (say 1 in a few hundred) the application seem to crash when run in 64bit mode on a Snow Leopard 10.6.3 I've attached the code, but please remind IT IS NOT A CODE issue. The crashed seem to be random in com.apple.AppKit at random locations and random moments. Anyone else had any experiences? Using GCC compiler of Xcode 3.2.2 Crash #1 of user Code Type: X86-64 (Native) Parent Process: launchd [90] Date/Time: 2010-05-02 04:12:59.708 -0500 OS Version: Mac OS X 10.6.3 (10D573) Report Version: 6 Exception Type: EXC_BAD_INSTRUCTION (SIGILL) Exception Codes: 0x0000000000000001, 0x0000000000000000 Crashed Thread: 0 Dispatch queue: com.apple.main-thread Application Specific Information: objc[232]: alt handlers in objc runtime are buggy! Thread 0 Crashed: Dispatch queue: com.apple.main-thread 0 libobjc.A.dylib 0x00007fff874dd8b7 _objc_fatal + 238 1 libobjc.A.dylib 0x00007fff874de57c objc_addExceptionHandler + 1026 2 com.apple.CoreFoundation 0x00007fff83914212 _CFDoExceptionOperation + 402 3 com.apple.AppKit 0x00007fff87afc55d _NSAppKitLock + 79 4 com.apple.AppKit 0x00007fff87bd1f93 +[NSColorList _findColorListNamed:forDeviceType:] + 86 5 com.apple.AppKit 0x00007fff87b9d304 -[NSCatalogColor colorUsingColorSpaceName:device:] + 255 6 com.apple.AppKit 0x00007fff87c985ad -[NSLayoutManager(NSPrivate) _drawGlyphsForGlyphRange:atPoint:parameters:] + 4764 7 com.apple.AppKit 0x00007fff87c5d79c -[NSTextView drawRect:] + 1839 8 com.apple.AppKit 0x00007fff87c5ce2e -[NSTextView _drawRect:clip:] + 2343 9 com.apple.AppKit 0x00007fff87be4485 -[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 1325 10 com.apple.AppKit 0x00007fff87be47ef -[NSView _recursiveDisplayAllDirtyWithLockFocus:visRect:] + 2199 11 com.apple.AppKit 0x00007fff87be2b57 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 767 12 com.apple.AppKit 0x00007fff87be3a23 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 4555 13 com.apple.AppKit 0x00007fff87be3a23 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 4555 14 com.apple.AppKit 0x00007fff87be3a23 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 4555 15 com.apple.AppKit 0x00007fff87be3a23 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 4555 16 com.apple.AppKit 0x00007fff87be3a23 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 4555 17 com.apple.AppKit 0x00007fff87be3a23 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 4555 18 com.apple.AppKit 0x00007fff87be3a23 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 4555 19 com.apple.AppKit 0x00007fff87be3a23 -[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 4555 20 com.apple.AppKit 0x00007fff87be2678 -[NSThemeFrame _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 254 21 com.apple.AppKit 0x00007fff87bdef27 -[NSView _displayRectIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:] + 2683 22 com.apple.AppKit 0x00007fff87b58777 -[NSView displayIfNeeded] + 969 23 com.apple.AppKit 0x00007fff87b53622 _handleWindowNeedsDisplay + 678 24 com.apple.Foundation 0x00007fff8600fa4d __NSFireTimer + 114 25 com.apple.CoreFoundation 0x00007fff83908708 __CFRunLoopRun + 6488 26 com.apple.CoreFoundation 0x00007fff839068df CFRunLoopRunSpecific + 575 27 com.apple.HIToolbox 0x00007fff821b5ada RunCurrentEventLoopInMode + 333 28 com.apple.HIToolbox 0x00007fff821b58df ReceiveNextEventCommon + 310 29 com.apple.HIToolbox 0x00007fff821b5798 BlockUntilNextEventMatchingListInMode + 59 30 com.apple.AppKit 0x00007fff87b28a2a _DPSNextEvent + 708 31 com.apple.AppKit 0x00007fff87b28379 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 155 32 com.apple.AppKit 0x00007fff87d37060 -[NSTextView mouseDown:] + 8426 33 com.apple.AppKit 0x00007fff87c21f1b -[NSWindow sendEvent:] + 5409 34 com.apple.AppKit 0x00007fff87b57662 -[NSApplication sendEvent:] + 4719 35 com.apple.AppKit 0x00007fff87aee0aa -[NSApplication run] + 474 36 com.apple.AppKit 0x00007fff87ae6d7c NSApplicationMain + 364 37 com.NZBVortex.NZBVortex 0x0000000100000fe0 start + 52 Crash #2 from same user moments later Code Type: X86-64 (Native) Parent Process: launchd [76] Date/Time: 2010-05-02 11:59:33.226 +0200 OS Version: Mac OS X 10.6.3 (10D573) Report Version: 6 Exception Type: EXC_BAD_INSTRUCTION (SIGILL) Exception Codes: 0x0000000000000001, 0x0000000000000000 Crashed Thread: 0 Dispatch queue: com.apple.main-thread Application Specific Information: objc[4360]: alt handlers in objc runtime are buggy! Thread 0 Crashed: Dispatch queue: com.apple.main-thread 0 libobjc.A.dylib 0x00007fff8015d8b7 _objc_fatal + 238 1 libobjc.A.dylib 0x00007fff8015e57c objc_addExceptionHandler + 1026 2 com.apple.CoreFoundation 0x00007fff85367212 _CFDoExceptionOperation + 402 3 com.apple.AppKit 0x00007fff840b5f2f -[NSViewHierarchyLock lockForReadingWithExceptionHandler:] + 478 4 com.apple.AppKit 0x00007fff8420753e -[NSConcreteTextStorage _lockForReading] + 243 5 com.apple.AppKit 0x00007fff841e1449 -[NSLayoutManager(NSPrivate) _fillGlyphHoleForCharacterRange:startGlyphIndex:desiredNumberOfCharacters:] + 320 6 com.apple.AppKit 0x00007fff840e204a _NSFastFillAllGlyphHolesForGlyphRange + 719 7 com.apple.AppKit 0x00007fff841e10e2 _NSFastFillAllLayoutHolesUpToEndOfContainerForGlyphIndex + 653 8 com.apple.AppKit 0x00007fff841e0c72 -[NSLayoutManager textContainerForGlyphAtIndex:effectiveRange:] + 243 9 com.apple.AppKit 0x00007fff840f6786 -[NSLayoutManager glyphRangeForTextContainer:] + 286 10 com.apple.AppKit 0x00007fff846664a9 -[NSToolTipStringDrawingLayoutManager _sizeWithSize:attributedString:] + 883 11 com.apple.AppKit 0x00007fff84665dad +[NSToolTipStringDrawingLayoutManager sizeForDisplayingAttributedString:] + 354 12 com.apple.AppKit 0x00007fff84667292 -[NSToolTipManager displayToolTip:] + 616 13 com.apple.AppKit 0x00007fff846657d4 toolTipTimerFired + 114 14 com.apple.CoreFoundation 0x00007fff8535b708 __CFRunLoopRun + 6488 15 com.apple.CoreFoundation 0x00007fff853598df CFRunLoopRunSpecific + 575 16 com.apple.HIToolbox 0x00007fff88510ada RunCurrentEventLoopInMode + 333 17 com.apple.HIToolbox 0x00007fff885108df ReceiveNextEventCommon + 310 18 com.apple.HIToolbox 0x00007fff88510798 BlockUntilNextEventMatchingListInMode + 59 19 com.apple.AppKit 0x00007fff840d1a2a _DPSNextEvent + 708 20 com.apple.AppKit 0x00007fff840d1379 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 155 21 com.apple.AppKit 0x00007fff8409705b -[NSApplication run] + 395 22 com.apple.AppKit 0x00007fff8408fd7c NSApplicationMain + 364 23 com.NZBVortex.NZBVortex 0x0000000100000fe0 start + 52 Weirdly enough the crashes seem to go away for these users when running the code in 32 bit mode. Any suggestions other then running the application in 32 bit only? Please do not dilute the feedback by asking for or blaming the code, the code is 100% solid, guaranteed! No memory leaks, the crashes clearly are triggered in 32 bit mode only just after start inside the AppKit itself like deep inside NSThread sleep's callstack.

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  • Linking LLVM JIT Code to Static LLVM Libraries?

    - by inflector
    I'm in the process of implementing a cross-platform (Mac OS X, Windows, and Linux) application which will do lots of CPU intensive analysis of financial data. The bulk of the analysis engine will be written in C++ for speed reasons, with a user-accessible scripting engine interfacing with the C++ testing engine. I want to write several scripting front-ends over time to emulate other popular software with existing large user bases. The first front will be a VisualBasic-like scripting language. I'm thinking that LLVM would be perfect for my needs. Performance is very important because of the sheer amount of data; it can take hours or days to run a single run of tests to get an answer. I believe that using LLVM will also allow me to use a single back-end solution while I implement different front-ends for different flavors of the scripting language over time. The testing engine itself will be separated from the interface and testing will even take place in a separate process with progress and results being reported to the testing management interface. Tests will consist of scripting code integrated with the testing engine code. In a previous implementation of a similar commercial testing system I wrote, I built a fast interpreter which easily interfaced with the testing library because it was written in C++ and linked directly to the testing engine library. Callbacks from scripting code to testing library objects involved translating between the formats with significant overhead. I'm imagining that with LLVM, I could implement the callbacks into C++ directly so that I could make the scripting code work almost as if it had been written in C++. Likewise, if all the code was compiled to LLVM byte-code format, it seems like the LLVM optimizers could optimize across the boundaries between the scripting language and the testing engine code that was written in C++. I don't want to have to compile the testing engine every time. Ideally, I'd like to JIT compile only the scripting code. For small tests, I'd skip some optimization passes, while for large tests, I'd perform full optimizations during the link. So is this possible? Can I precompile the testing engine to a .o object file or .a library file and then link in the scripting code using the JIT? Finally, ideally, I'd like to have the scripting code implement specific methods as subclasses for a specific C++ class. So the C++ testing engine would only see C++ objects while the JIT setup code compiled scripting code that implemented some of the methods for the objects. It seems that if I used the right name mangling algorithm it would be relatively easy to set up the LLVM generation for the scripting language to look like a C++ method call which could then be linked into the testing engine. Thus the linking stage would go in two directions, calls from the scripting language into the testing engine objects to retrieve pricing information and test state information and calls from the testing engine of methods of some particular C++ objects where the code was supplied not from C++ but from the scripting language. In summary: 1) Can I link in precompiled (either .bc, .o, or .a) files as part of the JIT compilation, code-generation process? 2) Can I link in code using that the process in 1) above in such a way that I am able to create code that acts as if it was all written in C++?

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  • AndEngine VS Android's Canvas VS OpenGLES - For rendering a 2D indoor vector map

    - by Orchestrator
    This is a big issue for me I'm trying to figure out for a long time already. I'm working on an application that should include a 2D vector indoor map in it. The map will be drawn out from an .svg file that will specify all the data of the lines, curved lines (path) and rectangles that should be drawn. My main requirement from the map are Support touch events to detect where exactly the finger is touching. Great image quality especially when considering the drawings of curved and diagonal lines (anti-aliasing) Optional but very nice to have - Built in ability to zoom, pan and rotate. So far I tried AndEngine and Android's canvas. With AndEngine I had troubles with implementing anti-aliasing for rendering smooth diagonal lines or drawing curved lines, and as far as I understand, this is not an easy thing to implement in AndEngine. Though I have to mention that AndEngine's ability to zoom in and pan with the camera instead of modifying the objects on the screen was really nice to have. I also had some little experience with the built in Android's Canvas, mainly with viewing simple bitmaps, but I'm not sure if it supports all of these things, and especially if it would provide smooth results. Last but no least, there's the option of just plain OpenGLES 1 or 2, that as far as I understand, with enough work should be able to support all the features I require. However it seems like something that would be hard to implement. And I've never programmed in OpenGL or anything like it, but I'm willing very much to learn. To sum it all up, I need a platform that would provide me with the ability to do the 3 things I mentioned before, but also very important - To allow me to implement this feature as fast as possible. Any kind of answer or suggestion would be very much welcomed as I'm very eager to solve this problem! Thanks!

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  • What is the best Binary Decision Diagram library for Java?

    - by reprogrammer
    A Binary Decision Diagram (BDD) is a data structure to represent boolean functions. I'd like use this data structure in a Java program. My search for Java based BDD libraries resulted into the following packages. Java Decision Diagram Libraries JavaBDD JDD JBDD bddbddb If you know of any other BDD libraries available for Java programs, please let me know so that I add it to the list above. If you have used any of these libraries, please tell me about your experience with the library. In particular, I'd like you to compare the available libraries along the following dimensions. Quality. Is the library mature and reasonably bug free? Performance. How do you evaluate the performance of the library? Support. Could you easily get support whenever you encountered a problem with the library? Was the library well documented? Ease of use. Was the API well designed? Could you install and use the library quickly and easily? Please mention the version of the library that you are evaluating.

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  • Resize transparent images using C#

    - by MartinHN
    Does anyone have the secret formula to resizing transparent images (mainly GIFs) without ANY quality loss - what so ever? I've tried a bunch of stuff, the closest I get is not good enough. Take a look at my main image: http://www.thewallcompany.dk/test/main.gif And then the scaled image: http://www.thewallcompany.dk/test/ScaledImage.gif //Internal resize for indexed colored images void IndexedRezise(int xSize, int ySize) { BitmapData sourceData; BitmapData targetData; AdjustSizes(ref xSize, ref ySize); scaledBitmap = new Bitmap(xSize, ySize, bitmap.PixelFormat); scaledBitmap.Palette = bitmap.Palette; sourceData = bitmap.LockBits(new Rectangle(0, 0, bitmap.Width, bitmap.Height), ImageLockMode.ReadOnly, bitmap.PixelFormat); try { targetData = scaledBitmap.LockBits(new Rectangle(0, 0, xSize, ySize), ImageLockMode.WriteOnly, scaledBitmap.PixelFormat); try { xFactor = (Double)bitmap.Width / (Double)scaledBitmap.Width; yFactor = (Double)bitmap.Height / (Double)scaledBitmap.Height; sourceStride = sourceData.Stride; sourceScan0 = sourceData.Scan0; int targetStride = targetData.Stride; System.IntPtr targetScan0 = targetData.Scan0; unsafe { byte* p = (byte*)(void*)targetScan0; int nOffset = targetStride - scaledBitmap.Width; int nWidth = scaledBitmap.Width; for (int y = 0; y < scaledBitmap.Height; ++y) { for (int x = 0; x < nWidth; ++x) { p[0] = GetSourceByteAt(x, y); ++p; } p += nOffset; } } } finally { scaledBitmap.UnlockBits(targetData); } } finally { bitmap.UnlockBits(sourceData); } } I'm using the above code, to do the indexed resizing. Does anyone have improvement ideas?

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  • WPF MVVM Chart change axes

    - by c0uchm0nster
    I'm new to WPF and MVVM. I'm struggling to determine the best way to change the view of a chart. That is, initially a chart might have the axes: X - ID, Y - Length, and then after the user changes the view (either via lisbox, radiobutton, etc) the chart would display the information: X - Length, Y - ID, and after a third change by the user it might display new content: X - ID, Y - Quality. My initial thought was that the best way to do this would be to change the bindings themselves. But I don't know how tell a control in XAML to bind using a Binding object in the ViewModel, or whether it's safe to change that binding in runtime? Then I thought maybe I could just have a generic Model that has members X and Y and populate them as needed in the viewmodel? My last thought was that I could have 3 different chart controls and just hide and show them as appropriate. What is the CORRECT/SUGGESTED way to do this in the MVVM pattern? Any code examples would be greatly appreciated. Thanks

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  • Feasibility of using Silverlight for web and windows client with common code base for data intensive

    - by Kabeer
    Hello. Recently in a conversation, someone suggested me to make use of Silverlight if I am targeting a web client and a windows client for the same application. This will cut down my effort for supporting the contrast in both presentation layers. Mine is a product, that will be deployed in enterprises. Both web and windows clients are desirable. With the above context, I have few queries: Is it advisable to adopt the recommended approach and whether this approach is becoming a trend? Besides, some configuration & deployment tweaking, will this significantly reduce effort on the presentation layer? Is there a possibility that my future prospects (for this product) will resist Silverlight footprint? Will I be able to make use of the ASP.Net MVC pattern? Will there be any performance implication for the web client? Will Silverlight support incremental load of controls? If my back-end includes SSRS, will I be able to harness all its front end features with Silverlight? Will I be able to support additional devices with same code base in future? Mine is a very data intensive application from both, data entry and reporting perspective. Is it advisable to use 3rd party controls (like Telerik) for improved user experience and developer productivity? Are their any professional quality open source Silverlight controls (library) available? Further, I seek information of best practices in the context I shared above.

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  • Calling webservice from WCF service

    - by Balaji
    I am having an issue consuming a webservice (c#.net) from a WCF service. The error i am getting is EndPointNotFoundException "TCP error code 10061: No connection could be made because the target machine actively refused it" I wrote a unit test to check if i could send a request to the web service and it worked fine [The unit test is using the same binding configuration as my WCF service] The web service and WCF service (client) have basichttp binding. Did anyone had similar kind of issue calling a webservice from a WCF service? The service Model section is as follows <system.serviceModel> <bindings> <basicHttpBinding> <binding name="DataService" closeTimeout="00:05:00" openTimeout="00:05:00" receiveTimeout="00:10:00" sendTimeout="00:05:00" allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard" maxBufferSize="65536" maxBufferPoolSize="524288" maxReceivedMessageSize="65536" messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered" useDefaultWebProxy="true"> <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384"/> <security mode="None"> <transport clientCredentialType="None" proxyCredentialType="None" realm=""/> <message clientCredentialType="UserName" algorithmSuite="Default"/> </security> </binding> </basicHttpBinding> </bindings> <client> <endpoint address="http://10.22.33.67/Service/DataService.asmx" binding="basicHttpBinding" bindingConfiguration="DataService" contract="Service.DataService" name="DataService"/> </client> <services> <service name="TestToConsumeDataService.WCFHost.Service1" behaviorConfiguration="TestToConsumeDataService.WCFHost.Service1Behavior"> <!-- Service Endpoints --> <endpoint address="" binding="basicHttpBinding" contract="TestToConsumeDataService.WCFHost.IService1"> <!-- Upon deployment, the following identity element should be removed or replaced to reflect the identity under which the deployed service runs. If removed, WCF will infer an appropriate identity automatically. --> <identity> <dns value="localhost"/> </identity> </endpoint> <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange"/> </service> </services> <behaviors> <serviceBehaviors> <behavior name="TestToConsumeDataService.WCFHost.Service1Behavior"> <!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment --> <serviceMetadata httpGetEnabled="true"/> <!-- To receive exception details in faults for debugging purposes, set the value below to true. Set to false before deployment to avoid disclosing exception information --> <serviceDebug includeExceptionDetailInFaults="false"/> </behavior> </serviceBehaviors> </behaviors> </system.serviceModel> The unit test project is also using the same service model section and it works. The only issue is while calling the service from another WCF service. Could you please suggest.

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  • How to bind dropdownlist data to complex class?

    - by chobo2
    Hi I am using asp.net mvc 2.0(default binding model) and I have this problem. I have a strongly typed view that has a dropdownlist <%= Html.DropDownList("List", "-----")%> Now I have a model class like Public class Test() { public List { get; set; } public string Selected {get; set;} } Now I have in my controller this public ActionResult TestAction() { Test ViewModel = new Test(); ViewModel.List = new SelectList(GetList(), "value", "text", "selected"); return View(Test); } [AcceptVerbs(HttpVerbs.Post)] public ActionResult TestAction(Test ViewModel) { return View(); } Now when I load up the TestAction page for the first time it populates the dropdown list as expected. Now I want to post the selected value back to the server(the dropdownlist is within a form tag with some other textboxes). So I am trying to bind it automatically when it comes in as seen (Test ViewModel) However I get this big nasty error. Server Error in '/' Application. No parameterless constructor defined for this object. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.MissingMethodException: No parameterless constructor defined for this object. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: [MissingMethodException: No parameterless constructor defined for this object.] System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck) +0 System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache) +98 System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean skipVisibilityChecks, Boolean skipCheckThis, Boolean fillCache) +241 System.Activator.CreateInstance(Type type, Boolean nonPublic) +69 System.Activator.CreateInstance(Type type) +6 System.Web.Mvc.DefaultModelBinder.CreateModel(ControllerContext controllerContext, ModelBindingContext bindingContext, Type modelType) +403 System.Web.Mvc.DefaultModelBinder.BindSimpleModel(ControllerContext controllerContext, ModelBindingContext bindingContext, ValueProviderResult valueProviderResult) +544 System.Web.Mvc.DefaultModelBinder.BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext) +479 System.Web.Mvc.DefaultModelBinder.GetPropertyValue(ControllerContext controllerContext, ModelBindingContext bindingContext, PropertyDescriptor propertyDescriptor, IModelBinder propertyBinder) +45 System.Web.Mvc.DefaultModelBinder.BindProperty(ControllerContext controllerContext, ModelBindingContext bindingContext, PropertyDescriptor propertyDescriptor) +658 System.Web.Mvc.DefaultModelBinder.BindProperties(ControllerContext controllerContext, ModelBindingContext bindingContext) +147 System.Web.Mvc.DefaultModelBinder.BindComplexElementalModel(ControllerContext controllerContext, ModelBindingContext bindingContext, Object model) +98 System.Web.Mvc.DefaultModelBinder.BindComplexModel(ControllerContext controllerContext, ModelBindingContext bindingContext) +2504 System.Web.Mvc.DefaultModelBinder.BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext) +548 System.Web.Mvc.ControllerActionInvoker.GetParameterValue(ControllerContext controllerContext, ParameterDescriptor parameterDescriptor) +474 System.Web.Mvc.ControllerActionInvoker.GetParameterValues(ControllerContext controllerContext, ActionDescriptor actionDescriptor) +181 System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +830 System.Web.Mvc.Controller.ExecuteCore() +136 System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +111 System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +39 System.Web.Mvc.<>c__DisplayClass8.<BeginProcessRequest>b__4() +65 System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +44 System.Web.Mvc.Async.<>c__DisplayClass8`1.<BeginSynchronous>b__7(IAsyncResult _) +42 System.Web.Mvc.Async.WrappedAsyncResult`1.End() +141 System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +54 System.Web.Mvc.Async.AsyncResultWrapper.End(IAsyncResult asyncResult, Object tag) +40 System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +52 System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +38 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +8836913 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +184 So how can I do this?

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  • How to implement an offline reader writer lock

    - by Peter Morris
    Some context for the question All objects in this question are persistent. All requests will be from a Silverlight client talking to an app server via a binary protocol (Hessian) and not WCF. Each user will have a session key (not an ASP.NET session) which will be a string, integer, or GUID (undecided so far). Some objects might take a long time to edit (30 or more minutes) so we have decided to use pessimistic offline locking. Pessimistic because having to reconcile conflicts would be far too annoying for users, offline because the client is not permanently connected to the server. Rather than storing session/object locking information in the object itself I have decided that any aggregate root that may have its instances locked should implement an interface ILockable public interface ILockable { Guid LockID { get; } } This LockID will be the identity of a "Lock" object which holds the information of which session is locking it. Now, if this were simple pessimistic locking I'd be able to achieve this very simply (using an incrementing version number on Lock to identify update conflicts), but what I actually need is ReaderWriter pessimistic offline locking. The reason is that some parts of the application will perform actions that read these complex structures. These include things like Reading a single structure to clone it. Reading multiple structures in order to create a binary file to "publish" the data to an external source. Read locks will be held for a very short period of time, typically less than a second, although in some circumstances they could be held for about 5 seconds at a guess. Write locks will mostly be held for a long time as they are mostly held by humans. There is a high probability of two users trying to edit the same aggregate at the same time, and a high probability of many users needing to temporarily read-lock at the same time too. I'm looking for suggestions as to how I might implement this. One additional point to make is that if I want to place a write lock and there are some read locks, I would like to "queue" the write lock so that no new read locks are placed. If the read locks are removed withing X seconds then the write lock is obtained, if not then the write lock backs off; no new read-locks would be placed while a write lock is queued. So far I have this idea The Lock object will have a version number (int) so I can detect multi-update conflicts, reload, try again. It will have a string[] for read locks A string to hold the session ID that has a write lock A string to hold the queued write lock Possibly a recursion counter to allow the same session to lock multiple times (for both read and write locks), but not sure about this yet. Rules: Can't place a read lock if there is a write lock or queued write lock. Can't place a write lock if there is a write lock or queued write lock. If there are no locks at all then a write lock may be placed. If there are read locks then a write lock will be queued instead of a full write lock placed. (If after X time the read locks are not gone the lock backs off, otherwise it is upgraded). Can't queue a write lock for a session that has a read lock. Can anyone see any problems? Suggest alternatives? Anything? I'd appreciate feedback before deciding on what approach to take.

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  • What programming languages do the top tier Universities teach?

    - by Simucal
    I'm constantly being inundated with articles and people talking about how most of today's Universities are nothing more than Java vocational schools churning out mediocre programmer after mediocre programmer. Our very own Joel Spolsky has his famous article, "The Perils of Java Schools." Similarly, Alan Kay, a famous Computer Scientist (and SO member) has said this in the past: "I fear — as far as I can tell — that most undergraduate degrees in computer science these days are basically Java vocational training." - Alan Kay (link) If the languages being taught by the schools are considered such a contributing factor to the quality of the school's program then I'm curious what languages do the "top-tier" computer science schools teach (MIT, Carnegie Mellon, Stanford, etc)? If the average school is performing so poorly due in large part the languages (or lack of) that they teach then what languages do the supposed "good" cs programs teach that differentiate them? If you can, provide the name of the school you attended, followed by a list of the languages they use throughout their coursework. Edit: Shog-9 asks why I don't get this information directly from the schools websites themselves. I would, but many schools websites don't discuss the languages they use in their class descriptions. Quite a few will say, "using high-level languages we will...", without elaborating on which languages they use. So, we should be able to get a pretty accurate list of languages taught at various well known institutions from the various SO members who have attended at them.

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  • External API function calls AS3 control timeline

    - by giles
    I have function problem using this code (below), the embedded flash movieclip disappears or completely prevents the scrollto.js query to function in DW cs3. Communication between Flash and JavaScript is without problems, it is the call back I can't find to work and more frustratingly, should be simple, as no values are not required. So far, this has been hours of scouring the net without a workable end in sight...ahrr. What is a function for this to work? JavaScript – to call Flash event from HTML button link, placed between head tags function callExternalInterface() var flashMovie = window.document.menu; flashMovie.menu_up(value); menu_up is the string. Does anyone know of workable function for callback?? HTML <div id="btn_up"><a href="#top" name="charDev" id="charDev" onclick="">top</a></div> Pane navigation div that uses Scrollto.js query, and it's this link I need calling back to the embedded "menubtns.swf" (nested in "AS3Menu_javascript.swf") to play 5 frames of this movieclip, via a JS function. Embedded .swf code, using swfobject.js with allowScriptAccess=always <object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" name="menu"<br/> width="251" height="251" id="menu"> <param name="movie" value="../~Assets/Flash/AS3Menu_javascript.swf" /> <param name="allowScriptAccess" value="always" /> <param name="movie" value="ExternalInterfaceScript.swf" /> <param name="quality" value="high" /> <object type="application/x-shockwave-flash" data="../~Assets/Flash/AS3Menu_javascript.swf" width="250" height="250"> <p>Alternative content</p> </object> </object> AS3 / Flash import flash.external.ExternalInterface;flash.system.Security.allowDomain(/sourceDomain/); ExternalInterface.addCallBack("menu_up", this, resetmenu); function resetmenu(){ gotoAndPlay:("frame label" / "number") }

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  • iPhone Landscape FAQ and Solutions

    - by Johannes Rudolph
    There has been a lot of confusion and a set of corresponding set of questions here on SO how iPhone applications with proper handling for Landscape/Portrait mode autorotation can be implemented. It is especially difficult to implement such an application when starting in landscape mode is desired. The most common observed effect are scrambled layouts and areas of the screen where touches are no longer recognized. A simple search for questions tagged iphone and landscape reveals these issues, which occur under certain scenarios: Landscape only iPhone app with multiple nibs: App started in Landscape mode, view from first nib is rendered fine, everything view loaded from a different nib is not displayed correctly. Iphone Landscape mode switching to Portraite mode on loading new controller: Self explanatory iPhone: In landscape-only, after first addSubview, UITableViewController doesn’t rotate properly: Same issue as above. iPhone Landscape-Only Utility-Template Application: Layout errors, controller does not seem to recognize the view should be rotated but displays a clipped portrait view in landscape mode, causing half of the screen to stay blank. presentModalViewController in landscape after portrait viewController: Modal views are not correctly rendered either. A set of different solutions have been presented, some of them including completely custom animation via CoreGraphics, while others build on the observation that the first view controller loaded from the main nib is always displayed correct. I have spent a significant amount of time investigating this issue and finally found a solution that is not only a partial solution but should work under all these circumstances. It is my intend with this CW post to provide sort of a FAQ for others having issues with UIViewControllers in Landscape mode. Please provide feedback and help improve the quality of this Post by incorporating any related observations. Feel free to edit and post other/better answers if you know of any.

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