Search Results

Search found 22900 results on 916 pages for 'pascal case'.

Page 509/916 | < Previous Page | 505 506 507 508 509 510 511 512 513 514 515 516  | Next Page >

• Throughput measurements

  - by dotsid

  I wrote simple load testing tool for testing performance of Java modules. One problem I faced is algorithm of throughput measurements. Tests are executed in several thread (client configure how much times test should be repeated), and execution time is logged. So, when tests are finished we have following history: 4 test executions 2 threads 36ms overall time - idle * test execution 5ms 9ms 4ms 13ms T1 |-*****-*********-****-*************-| 3ms 6ms 7ms 11ms T2 |-***-******-*******-***********-----| <-----------------36ms---------------> For the moment I calculate throughput (per second) in a following way: 1000 / overallTime * threadCount. But there is problem. What if one thread will complete it's own tests more quickly (for whatever reason): 3ms 3ms 3ms 3ms T1 |-***-***-***-***----------------| 3ms 6ms 7ms 11ms T2 |-***-******-*******-***********-| <--------------32ms--------------> In this case actual throughput is much better because of measured throughput is bounded by the most slow thread. So, my question is how should I measure throughput of code execution in multithreaded environment.

  Read the article

• How can I detect a debugger or other tool that might be analysing my software?

  - by Workshop Alex

  A very simple situation. I'm working on an application in Delphi 2007 which is often compiled as 'Release' but still runs under a debugger. And occasionally it will run under SilkTest too, for regression testing. While this is quite fun I want to do something special... I want to detect if my application is running within a debugger/regression-tester and if that's the case, I want the application to know which tool is used! (Thus, when the application crashes, I could report this information in it's error report.) Any suggestions, solutions?

  Read the article

• How do I design a cryptographic hash function?

  - by Eyal

  After reading the following about why one-way hash functions are one-way, I would like to know how to design a hash function. http://stackoverflow.com/questions/1038307/help-me-better-understand-cryptographic-hash-functions/1047106#1047106 Before everyone gets on my case: Yes, I know that it's a bad idea to not use a proven and tested hash function. I would still like to know how it's done. I'm familiar with Feistel-network ciphers but those are necessarily reversible, horrible for a cryptographic hash. Is there some sort of construction that is well-used in cryptographic hashing? Something that makes it very one-way?

  Read the article

• DataTable C# Empty column type

  - by Dested

  I am trying build a DataTable one row at a time using the following code. foreach (var e in Project.ProjectElements[hi.FakeName].Root.Elements()) { index = 0; object[] obj=new object[count]; foreach (var holdingColumn in names) { string d = e.Attribute(holdingColumn.Key).Value; obj[index++] = d; } dt.Rows.Add(obj); } The problem is the DataTable has types tied to the columns. Sometimes im passing null (or an empty string) in that object index and it is telling me that it cant be converted properly to a DateTime (in this case). My question is what should I default this value to, or is there some way to have the DataTable ignore empty values.

  Read the article

• assembly language programming (prime number)

  - by chris

  Prompt the user for a positive three digit number, then read it. Let's call it N. Divide into N all integer values from 2 to (N/2)+1 and test to see if the division was even, in which case N is instantly shown to be non-prime. Output a message printing N and saying that it is not prime. If none of those integer values divide evenly (remainder never is zero), then N is shown to be prime. Output a message printing N and saying that it is prime. Ask the user if he or she wants to test another number; if the user types "n" or "N", quit. If "y" or "Y", jump back and repeat. Comments in your code are essential. Hi. I am kinda in rush to do this.. please help me doing it. I'll be much appreciated. thank you

  Read the article

• QGrid display default "loading" message when updating a table / on custom update

  - by JVXR

  I have a case where I need to update a jqgrid based on some search criteria which the user selects. I can get the data to update , but I would want the loading message to show while the new data is being fetched. Can someone please let me know how to get that working ? Current code follows var ob_gridContents = $.ajax( { url : '/DisplayObAnalysisResults.action?getCustomAnalysisResults', data : "portfolioCategory="+ $('#portfolioCategory').val() +"&subPortfolioCategory="+ $('#subPortfolioCategory').val() + "&subportfolio=" + $('#subportfolio').val(), async : false }).responseText; var ob_Grid = jQuery('#OBGrid')[0]; var ob_GridJsonContents = eval('(' + ob_gridContents + ')'); $('#ob_Grid').trigger("reloadGrid"); ob_Grid.addJSONData(ob_GridJsonContents); ob_Grid = null; ob_GridJsonContents = null; }

  Read the article

• How do I manage object disposal when I use IoC?

  - by Aval

  My case it is Ninject 2. // normal explicit dispose using (var dc = new EFContext) { } But sometimes I need to keep the context longer or between function calls. So I want to control this behavior through IoC scope. // if i use this way. how do i make sure object is disposed. var dc = ninject.Get<IContext>() // i cannot use this since the scope can change to singleton. right ?? using (var dc = ninject.Get<IContext>()) { } Sample scopes Container.Bind<IContext>().To<EFContext>().InSingletonScope(); // OR Container.Bind<IContext>().To<EFContext>().InRequestScope();

  Read the article

• Using TCP Acks to measure latency to a server?

  - by Ted Graham

  I am trying to measure latency to a server that I don't control. This is in a colocated environment, so the latency is on the order of 500 us (.5 ms). I understand that Cisco gear frequently deprioritizes ICMP traffic, making ping times unreliable. Is there a way for me to tell if this is the case on the gear I am traversing? Can I use TCP acknowledgements to determine the minimum latency to the remote server? To do this, I would somehow need to force the remote server to send a TCP ack immediately on receiving my data.

  Read the article

• writing header in csv python with DictWriter

  - by user248237

  assume I have a csv.DictReader object and I want to write it out as a csv file. How can I do this? I thought of the following: dr = csv.DictReader(open(f), delimiter='\t') # process my dr object # ... # write out object output = csv.DictWriter(open(f2, 'w'), delimiter='\t') for item in dr: output.writerow(item) Is that the best way? More importantly, how can I make it so a header is written out too, in this case the object "dr"s .fieldnames property? thanks.

  Read the article

• Does a WCF service with basicHttpBinding create a new connection for each request?

  - by Phil Wright

  I have a Silverlight client calling a WCF Service on an IIS web server. It uses the default basicHttpBinding setting for the calls. My client code has the usual Visual Studio generated proxy that is generated when using the 'Update Service Reference' menu option. Does every call to the service using that proxy use the same connection? Or does it create a connection each time a call is made and then close it down once the reply is received? As the client is actually making a SOAP call over HTTP I just assumed that every service request had a new connection created but I want to check if that is the case? (I need to know because if it creates a new connection each time then each request could end up at a different server because there are several servers being load balanced. It is uses a single connection for the duration of the proxy then I can assume they all end up at the same machine and so it would cache state.)

  Read the article

• Issues with RegularExpressionValidator in VB .NET 2005 using ASP File Uploader

  - by JFV

  I'm looking to validate a single word: detail (upper/lower/mix-case) prior to submitting my VB .NET 2005 page. I used Regex Builder and the below code validates, but it's not working in my web page... Does anyone have any ideas? Input file location: <input id="btnBrowseForFile" runat="server" enableviewstate="true" name="btnBrowseForFile" style="width: 500px" type="file" /> <asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ControlToValidate="btnBrowseForFile" ErrorMessage="*Please select an input file." Display="Dynamic"></asp:RequiredFieldValidator> <asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ControlToValidate="btnBrowseForFile" Display="Dynamic" ErrorMessage='*Please select a file that contains the word "detail"' ValidationExpression="(\b|\s|\w)(d|D)(e|E)(t|T)(a|A)(i|I)(l|L)(\s|\b|\w)"></asp:RegularExpressionValidator>&nbsp; Thanks!!! JFV

  Read the article

• Create a SQL query to retrieve most recent records

  - by mattruma

  I am creating a status board module for my project team. The status board allows the user to to set their status as in or out and they can also provide a note. I was planning on storing all the information in a single table ... and example of the data follows: Date User Status Notes ------------------------------------------------------- 1/8/2009 12:00pm B.Sisko In Out to lunch 1/8/2009 8:00am B.Sisko In 1/7/2009 5:00pm B.Sisko In 1/7/2009 8:00am B.Sisko In 1/7/2009 8:00am K.Janeway In 1/5/2009 8:00am K.Janeway In 1/1/2009 8:00am J.Picard Out Vacation I would like to query the data and return the most recent status for each user, in this case, my query would return the following results: Date User Status Notes ------------------------------------------------------- 1/8/2009 12:00pm B.Sisko In Out to lunch 1/7/2009 8:00am K.Janeway In 1/1/2009 8:00am J.Picard Out Vacation I am try to figure out the TRANSACT-SQL to make this happen? Any help would be appreciated.

  Read the article

• How does the Garbage Collector decide when to kill objects held by WeakReferences?

  - by Kennet Belenky

  I have an object, which I believe is held only by a WeakReference. I've traced its reference holders using SOS and SOSEX, and both confirm that this is the case (I'm not an SOS expert, so I could be wrong on this point). The standard explanation of WeakReferences is that the GC ignores them when doing its sweeps. Nonetheless, my object survives an invocation to GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced). Is it possible for an object that is only referenced with a WeakReference to survive that collection? Is there an even more thorough collection that I can force? Or, should I re-visit my belief that the only references to the object are weak?

  Read the article

• Convert date time value to expected with SimpleDateFormat

  - by Khoi Nguyen

  I have an issue with converting a date time value to expected one with SimpleDateFormat (java), my expected format is MM/yyyy, and I want to convert 2 values to only 1 format MM-yyyy for example 05-2012 yyyy-MM for example 2012-05 ouput is 05/2012. I implemented something look like following String expiry = "2012-01"; try { result = convertDateFormat(expiry, "MM-yyyy", expectedFormat); } catch (ParseException e) { try { result = convertDateFormat(expiry, "yyyy-MM", expectedFormat); } catch (ParseException e1) { e1.printStackTrace(); } e.printStackTrace(); } private String convertDateFormat(String date, String oPattern, String ePattern) throws ParseException { SimpleDateFormat normalFormat = new SimpleDateFormat(oPattern); Date d = normalFormat.parse(date); SimpleDateFormat cardFormat = new SimpleDateFormat(ePattern); return cardFormat.format(d); } Now, the return value is 6808, I don't know why. Kindly anyone help me on this case.

  Read the article

• Does changing the order of class private data members breaks ABI

  - by Dmitry Yudakov

  I have a class with number of private data members (some of them static), accessed by virtual and non-virtual member functions. There's no inline functions and no friend classes. class A { int number; string str; static const int static_const_number; public: // got virtual and non-virtual functions, working with these memebers virtual void func1(); void func2(); // no inline functions or friends }; Does changing the order of private data members breaks ABI in this case? class A { string str; static const int static_const_number; int number; // <-- integer member moved here ... };

  Read the article

• Quick MySQLi security question

  - by Benjamin Falk

  I have a quick MySQLi security related question... For example, take a look at this code (gets in put from the user, checks it against the database to see if the username/password combination exist): $input['user'] = htmlentities($_POST['username'], ENT_QUOTES); $input['pass'] = htmlentities($_POST['password'], ENT_QUOTES); // query db if ($stmt = $mysqli->prepare("SELECT * FROM members WHERE username=? AND password = ?")) { $stmt->bind_param("ss", $input['user'], md5($input['pass'] . $config['salt'])); $stmt->execute(); $stmt->store_result(); // check if there is a match in the database for the user/password combination if ($stmt->num_rows > 0) {} } In this case, I am using htmlentities() on the form data, and using a MySQLi prepared statement. Do I still need to be using mysql_real_escape_string()?

  Read the article

• Set binding for DataTemplate components in code

  - by Chouppy

  Hi; sorry if I'm not clear, it's not really clear in my head too (especially after trying to find my way in other posts :p) What I'm willing to do is creating DataGrids in code, with zero to numerous columns containing a button, which will call one same function but with a "parameter" (different for each column). Here is what I got so far : DataGrid created in code DataTemplate defined in the xaml resources (with a button) DataGridTemplateColumn which uses the above DataTemplate Is it possible to bind the button's properties (in the DataTemplate), to the DataGridTemplateColumn properties (in my case, the column header would be ok), and how? Is there a way to get an access to the DataTemplate components (the button for example) in code, and modify their properties? Is it possible (and not hazardous) to create a DataTemplate in code? I declared mine in xaml because I found a post advising to do so instead of code. Thanks for your help.

  Read the article

• Graphics.FromHwnd(IntPtr.Zero) returns null, why?

  - by Martin Moser

  I'm currently investigating a problem with a 3rd party component (DevExpress) in my application. My issue is quite similar to this one DevExpress KB article. I get the same exception with more less the same stacktrace. So I used .NET Reflector to find out, what may be null in this scenario, and the only object which is a candiate to be null is Graphics. This is created with Graphics.FromHwnd(IntPtr.Zero). Because I don't have a broad knowledge about GDI, I would like to know if somebody can tell me possible scenarios when this may return null... I tried to reproduce it in a scenario where windows is out of GDI handle's, but then I'm getting a "out of handles" - exception at least once, which is not the case in the issue I'm investigating tia, Martin

  Read the article

• SYN flooding still a threat to servers?

  - by Rob

  Well recently I've been reading about different Denial of Service methods. One method that kind of stuck out was SYN flooding. I'm a member of some not-so-nice forums, and someone was selling a python script that would DoS a server using SYN packets with a spoofed IP address. However, if you sent a SYN packet to a server, with a spoofed IP address, the target server would return the SYN/ACK packet to the host that was spoofed. In which case, wouldn't the spoofed host return an RST packet, thus negating the 75 second long-wait, and ultimately failing in its attempt to DoS the server?

  Read the article

• Hibernate cascading: should setting to null on a parent delete children?

  - by EugeneP

  I wonder if Hib works as expected in my case? My Cascading options are set to "all,delete-orphan". Table_A @OneToOne Table_B Table_B @OneToMany Table_C Now it looks like Table_A . getTable_B . getTable_C_Collection() Suppose there are elements in Table_C collection. What I expect from Hibernate: if I set Table_B link to null, then all Table_C collection elements MUST BE DELETED. It does not happen. They become ORPHANED !

  Read the article

• WPF DependencyProperty event before content changed

  - by morsanu

  First I will explain the context of the problem, because you might be able to point me in a better direction. I need to implement a undo-redo like system on an object. The object has a series of dependency properties. Some are double, int, string but some are also of DependencyObject type. I need to save the value of the property before it is changed, and for this I added the CoerceValueCallback. public static readonly DependencyProperty MyBackgroundProperty = DependencyProperty.Register("MyBackground", typeof(MyCustomizableBackground), typeof(MyComponent), new UIPropertyMetadata(default(MyCustomizableBackground), null, new CoerceValueCallback(OnPropertyChanged))); In OnPropertyChanged I save the value before it's changed. MyCustomizableBackground is the DependencyObject that has also some dependency properties. The problem is that in this case, where I have a custom object as a property, the OnPropertyChanged method isn't triggered, but when I have a common type, it is triggered.

  Read the article

• How can I dynamically add an <object> tag with JavaScript in IE?

  - by Detlef D. Doerscheln

  I have to add either an embed tag for Firefox or an object tag for Internet Explorer with JavaScript to address the appropriate ActiveX / Plugin depending on the browser. The plugin could be missing and needs to get downloaded in this case. The dynamically added embed tag for Firefox works as expected. The dynamically added object tag for Internet Explorer seems to do nothing at all. The object tag needs the following attributes to function properly. id ="SomeId" classid = "CLSID:{GUID}" codebase = "http://www.MyActicexSource.com/MyCuteActivex.CAB#Version=2,0,0,1" Even a general working idea or method would be nice. Thanks!

  Read the article

• What's the fastest way to check the availability of a SQL Server server?

  - by mwolfe02

  I have an MS Access program in use in multiple locations. It connects to MS SQL Server tables, but the server name is different in each location. I am looking for the fastest way to test for the existence of a server. The code I am currently using looks like this: ShellWait "sc \\" & ServerName & " qdescription MSSQLSERVER > " & Qt(fn) FNum = FreeFile() Open fn For Input As #FNum Line Input #FNum, Result Close #FNum Kill fn If InStr(Result, "SUCCESS") Then ... ShellWait: executes a shell command and waits for it to finish Qt: wraps a string in double quotes fn: temporary filename variable I run the above code against a list of server names (of which only one is normally available). The code takes about one second if the server is available and takes about 8 seconds for each server that is unavailable. I'd like to get both of these lower, if possible, but especially the fail case as this one happens most often.

  Read the article

• Hierarchical animations in DirectX and handling seperate animations on the same mesh?

  - by meds

  I have a hierarchical animated model in DirectX which loads and animates based on the following DirectX sample: http://msdn.microsoft.com/en-us/library/ee418677%28VS.85%29.aspx As good as the sample is it does not really go into some of the details of animation that I'd like. For example, if I have a mesh which has a running animation and a throwing animation as seperate animation sets how can I get the throwing animation to occur for bones above the hip and the walking animation to occur for bones underneath the hip? Also if I wanted to for example have the person lean left or right would I simply have to find the bone for the hip and multiplay a rotation matrix by its matrix? In this case I think the matrix is m_amxBoneOffsets?

  Read the article

• Do Blob properties on entities affect query performance?

  - by Jaroslav Záruba

  Hello I'm trying to make my mind on whether to store a binary representation of an entity as its Blob property, or whether I better keep the blobs in some separate 'wrapping' class. Possible impact on memory heap and/or a query execution time are my concerns in the first case, complexity votes against the other one. I know Blobs are not indexed, i.e. index size is not what I'm worrying about. Also I assume for blobs Datastore puts defaultFetchGroup to false, but does it mean that blobs don't make a difference in queries? Regards J. Záruba

  Read the article

< Previous Page | 505 506 507 508 509 510 511 512 513 514 515 516  | Next Page >