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  • understanding floating point variables

    - by Syom
    There is some problem, i can't understand anyway. look at this code please <script type="text/javascript"> function math(x) { var y; y = x*10; alert(y); } </script> <input type="button" onclick="math(0.011)"> What must be alerted after i click on button? i think 0.11, but no, it alerts 0.10999999999999999 explain please this behavior. thanks in advance

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  • session variables lost between pages or use same variables

    - by user222333
    Hi, Yesterday I learn many thing from you, especially from Marc and my problem was solved ( session variables lost between pages or use same variables ). But now I continue asking: I don't want to use Session ID(session.use_trans_sid = 1) between pages. But also I don't want to use same session variables for different users at same application and also I don't want lost session variables between pages for same user. Is it possible? If yes how? Thanks for everybody for any help. Best regards. I have Wamp Server(2.2.11) with PHP(5.2.9.-2). My php.ini's session settings at below: [Session] session.save_handler = files session.save_path = "c:/wamp/tmp" session.use_cookies = 0 ;session.cookie_secure = ;session.name = PHPSESSID session.auto_start = 0 session.cookie_lifetime = 0 session.cookie_path = / session.cookie_domain = session.cookie_httponly = session.serialize_handler = php session.gc_probability = 1 session.gc_divisor = 1000 session.gc_maxlifetime = 1440 session.bug_compat_42 = 0 session.bug_compat_warn = 1 session.referer_check = session.entropy_length = 0 session.entropy_file = ;session.entropy_length = 16 ;session.entropy_file = /dev/urandom session.cache_limiter = nocache session.cache_expire = 180 session.use_trans_sid = 1 session.hash_function = 0 session.hash_bits_per_character = 5 url_rewriter.tags = "a=href,area=href,frame=src,input=src,form=fakeentry"

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  • Getting Started with UDK

    - by Sean Edwards
    I've been trying for a couple of days now to learn UDK, but I seem to be stuck at making that leap to understanding how everything works together. I understand the syntax, that's all well and good, and I pretty much get how classes and .ini files interact. As for the API, I have the entire reference as pretty decent Doxygen-style HTML output. What I'm looking for is a sort of intermediate tutorial on game creation from scratch (as opposed to modding UT3 itself), more advanced than just learning language syntax, but not yet to the level of going through the API step by step. I'm looking for some guide to the structure of the internals - how GameInfo and PlayerController interact, where Pawn comes in, etc. - a way to visualize the big picture. Does anyone have a particular favorite intermediate-level tutorials (or set of tutorials) that they used when first learning UDK?

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  • Traveling Salesman in polynomial time

    - by Andres
    Problem Description: Write a program in any language with the shortest number of characters that solves the following problem: Given a collection of cities and the cost of travel between each pair of them, find the cheapest way of visiting all of the cities and returning to your starting point. All solutions must take at most polynomial time. Input will be in the form of a text file named simply "i". The text file will contain data in the following format: city1# city2# cost$ cityA# cityB# cost$ ... Each element in the file is separated with a space, and there is a newline at the end of every line. Code count does not include whitespace. Solutions that take longer than polynomial time to find will not be accepted

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  • awk and cat - How to ignore multiple lines?

    - by Filipe YaBa Polido
    I need to extract Voip log from a D-Link router, so I've setup a little python script that executes a command in this router via telnet. My script does a "cat /var/log/calls.log" and returns the result, however... it also sends non-important stuff, like the BusyBox banner, etc... How can I ignore lines from 1 to 6 and the last 2 ? This is my current output: yaba@foobar:/stuff$ python calls.py BusyBox v1.00 (2009.04.09-11:17+0000) Built-in shell (msh) Enter 'help' for a list of built-in commands. DVA-G3170i/PT # cat /var/call.log 1 ,1294620563,2 ,+351xxx080806 ,xxx530802 ,1 ,3 ,1 DVA-G3170i/PT # exit And I just need: 1 ,1294620563,2 ,+351xxx080806 ,xxx530802 ,1 ,3 ,1 (it can have multiple lines) So that I can save it to a CSV and later to a sql db. Thanks, and sorry my bad english.

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  • Find the next textarea using Jquery

    - by gnomixa
    HTML <tr id="rowId"><td><textarea class="inputTextarea"></textarea></td><td><textarea class="inputTextarea"></textarea></td></tr> <tr id="rowId2"><td><textarea class="inputTextarea"></textarea></td><td><textarea class="inputTextarea"></textarea></td></tr> <tr id="rowId3"><td><textarea class="inputTextarea"></textarea></td><td><textarea class="inputTextarea"></textarea></td></tr> Provided I know rowId, how do I find the next textarea, starting at any arbitary point. I don't mean ANY input, textarea only.

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  • Additional spaces in String having read text file to String using FileInputStream

    - by David
    Hi, I'm trying to read in a text file to a String variable. The text file has multiple lines. Having printed the String to test the "read-in" code, there is an additional space between every character. As I am using the String to generate character bigrams, the spaces are making the sample text useless. The code is try{ FileInputStream fstream = new FileInputStream(textfile); DataInputStream in = new DataInputStream(fstream); BufferedReader br = new BufferedReader(new InputStreamReader(in)); //Read corpus file line-by-line, concatenating each line to the String "corpus" while ((strLine = br.readLine()) != null) { corpus = (corpus.concat(strLine)); } in.close(); //Close the input stream } catch (Exception e) {//Catch exception if any System.err.println("Error test check: " + e.getMessage()); } I'd be grateful for any advice. Thanks.

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  • How to define a function in ghci across multiple lines

    - by Peter McGrattan
    I'm trying to define any simple function that spans multiple lines in ghci, take the following as an example: let abs n | n >= 0 = n | otherwise = -n So far I've tried pressing Enter after the first line: Prelude> let abs n | n >= 0 = n Prelude> | otherwise = -n <interactive>:1:0: parse error on input `|' I've also attempted to use the :{ and :} commands but I don't get far: Prelude> :{ unknown command ':{' use :? for help. I'm using GHC Interactive version 6.6 for Haskell 98 on Linux, what am I missing?

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  • Code Contracts: Unit testing contracted code

    - by DigiMortal
    Code contracts and unit tests are not replacements for each other. They both have different purpose and different nature. It does not matter if you are using code contracts or not – you still have to write tests for your code. In this posting I will show you how to unit test code with contracts. In my previous posting about code contracts I showed how to avoid ContractExceptions that are defined in code contracts runtime and that are not accessible for us in design time. This was one step further to make my randomizer testable. In this posting I will complete the mission. Problems with current code This is my current code. public class Randomizer {     public static int GetRandomFromRangeContracted(int min, int max)     {         Contract.Requires<ArgumentOutOfRangeException>(             min < max,             "Min must be less than max"         );           Contract.Ensures(             Contract.Result<int>() >= min &&             Contract.Result<int>() <= max,             "Return value is out of range"         );           var rnd = new Random();         return rnd.Next(min, max);     } } As you can see this code has some problems: randomizer class is static and cannot be instantiated. We cannot move this class between components if we need to, GetRandomFromRangeContracted() is not fully testable because we cannot currently affect random number generator output and therefore we cannot test post-contract. Now let’s solve these problems. Making randomizer testable As a first thing I made Randomizer to be class that must be instantiated. This is simple thing to do. Now let’s solve the problem with Random class. To make Randomizer testable I define IRandomGenerator interface and RandomGenerator class. The public constructor of Randomizer accepts IRandomGenerator as argument. public interface IRandomGenerator {     int Next(int min, int max); }   public class RandomGenerator : IRandomGenerator {     private Random _random = new Random();       public int Next(int min, int max)     {         return _random.Next(min, max);     } } And here is our Randomizer after total make-over. public class Randomizer {     private IRandomGenerator _generator;       private Randomizer()     {         _generator = new RandomGenerator();     }       public Randomizer(IRandomGenerator generator)     {         _generator = generator;     }       public int GetRandomFromRangeContracted(int min, int max)     {         Contract.Requires<ArgumentOutOfRangeException>(             min < max,             "Min must be less than max"         );           Contract.Ensures(             Contract.Result<int>() >= min &&             Contract.Result<int>() <= max,             "Return value is out of range"         );           return _generator.Next(min, max);     } } It seems to be inconvenient to instantiate Randomizer now but you can always use DI/IoC containers and break compiled dependencies between the components of your system. Writing tests for randomizer IRandomGenerator solved problem with testing post-condition. Now it is time to write tests for Randomizer class. Writing tests for contracted code is not easy. The main problem is still ContractException that we are not able to access. Still it is the main exception we get as soon as contracts fail. Although pre-conditions are able to throw exceptions with type we want we cannot do much when post-conditions will fail. We have to use Contract.ContractFailed event and this event is called for every contract failure. This way we find ourselves in situation where supporting well input interface makes it impossible to support output interface well and vice versa. ContractFailed is nasty hack and it works pretty weird way. Although documentation sais that ContractFailed is good choice for testing contracts it is still pretty painful. As a last chance I got tests working almost normally when I wrapped them up. Can you remember similar solution from the times of Visual Studio 2008 unit tests? Cannot understand how Microsoft was able to mess up testing again. [TestClass] public class RandomizerTest {     private Mock<IRandomGenerator> _randomMock;     private Randomizer _randomizer;     private string _lastContractError;       public TestContext TestContext { get; set; }       public RandomizerTest()     {         Contract.ContractFailed += (sender, e) =>         {             e.SetHandled();             e.SetUnwind();               throw new Exception(e.FailureKind + ": " + e.Message);         };     }       [TestInitialize()]     public void RandomizerTestInitialize()     {         _randomMock = new Mock<IRandomGenerator>();         _randomizer = new Randomizer(_randomMock.Object);         _lastContractError = string.Empty;     }       #region InputInterfaceTests     [TestMethod]     [ExpectedException(typeof(Exception))]     public void GetRandomFromRangeContracted_should_throw_exception_when_min_is_not_less_than_max()     {         try         {             _randomizer.GetRandomFromRangeContracted(100, 10);         }         catch (Exception ex)         {             throw new Exception(string.Empty, ex);         }     }       [TestMethod]     [ExpectedException(typeof(Exception))]     public void GetRandomFromRangeContracted_should_throw_exception_when_min_is_equal_to_max()     {         try         {             _randomizer.GetRandomFromRangeContracted(10, 10);         }         catch (Exception ex)         {             throw new Exception(string.Empty, ex);         }     }       [TestMethod]     public void GetRandomFromRangeContracted_should_work_when_min_is_less_than_max()     {         int minValue = 10;         int maxValue = 100;         int returnValue = 50;           _randomMock.Setup(r => r.Next(minValue, maxValue))             .Returns(returnValue)             .Verifiable();           var result = _randomizer.GetRandomFromRangeContracted(minValue, maxValue);           _randomMock.Verify();         Assert.AreEqual<int>(returnValue, result);     }     #endregion       #region OutputInterfaceTests     [TestMethod]     [ExpectedException(typeof(Exception))]     public void GetRandomFromRangeContracted_should_throw_exception_when_return_value_is_less_than_min()     {         int minValue = 10;         int maxValue = 100;         int returnValue = 7;           _randomMock.Setup(r => r.Next(10, 100))             .Returns(returnValue)             .Verifiable();           try         {             _randomizer.GetRandomFromRangeContracted(minValue, maxValue);         }         catch (Exception ex)         {             throw new Exception(string.Empty, ex);         }           _randomMock.Verify();     }       [TestMethod]     [ExpectedException(typeof(Exception))]     public void GetRandomFromRangeContracted_should_throw_exception_when_return_value_is_more_than_max()     {         int minValue = 10;         int maxValue = 100;         int returnValue = 102;           _randomMock.Setup(r => r.Next(10, 100))             .Returns(returnValue)             .Verifiable();           try         {             _randomizer.GetRandomFromRangeContracted(minValue, maxValue);         }         catch (Exception ex)         {             throw new Exception(string.Empty, ex);         }           _randomMock.Verify();     }     #endregion        } Although these tests are pretty awful and contain hacks we are at least able now to make sure that our code works as expected. Here is the test list after running these tests. Conclusion Code contracts are very new stuff in Visual Studio world and as young technology it has some problems – like all other new bits and bytes in the world. As you saw then making our contracted code testable is easy only to the point when pre-conditions are considered. When we start dealing with post-conditions we will end up with hacked tests. I hope that future versions of code contracts will solve error handling issues the way that testing of contracted code will be easier than it is right now.

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  • Problem using void pointer as a function argument

    - by Nazgulled
    Hi, I can't understand this result... The code: void foo(void * key, size_t key_sz) { HashItem *item = malloc(sizeof(HashItem)); printf("[%d]\n", (int)key); ... item->key = malloc(key_sz); memcpy(item->key, key, key_sz); } void bar(int num) { foo(&num, sizeof(int)); } And I do this call: bar(900011009); But the printf() output is: [-1074593956] I really need key to be a void pointer, how can I fix this?

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  • Debugging ASP.NET Strings Downloaded to Browser (Montréal instead of Montréal)

    - by jdk
    I'm downloading a vCard to the browser using Response.Write to output .NET strings with special accented characters. Mime type is text/x-vcard and French characters are appearing wrong in Outlook, for example Montréal;Québec .NET string shows as Montréal Québec in browser. I'm using this vCard generator code from CodeProject.com I've played with the System.Encoding sample code at the bottom of this linked MSDN page to convert the unicode string into bytes and then write the ascii bytes but then I get Montr?al Qu?bec (progress but not a win). Also I've tried setting content type to both us-ascii and utf-8 of the response. If I open the downloaded vCard in Windows Notepad and save it as ANSI text (instead of default unicode format) and open in Outlook it's okay. So my assumption is I need to cause download of ANSI charset but am unsure if I'm doing it wrong or have a misunderstanding of where to start. Update: Looking at the raw HTTP, it appears my French characters are being downloaded in the unexpected format so it looks like I need to do some work on the server side... (full size)

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  • SQL..Sum two rows

    - by Cha
    Sample data: LOCATION NAME LABEL1 LABEL2 SERVICE TIME NY Andrew A B HOUSE 2555 NY Andrew A B CAR 35 NJ Copley C A HOUSE 1025 NY Copley A B HOUSE 650 VA Dalton D C PET 25 What I want to do ias add another column where in it shows sum(Time) of rows with same data except for the Service.Also, the services that I need are only the sum of car and house.Is this possible? If not can you help me with the right query Sample output I need: LOCATION NAME LABEL1 LABEL2 SERVICE TIME SUM NY Andrew A B HOUSE 2555 **2590** NY Andrew A B CAR 35 NJ Copley C A HOUSE 1025 1025 NY Copley A B HOUSE 650 650

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  • Why is my movie clip instance null?

    - by Khan
    I have 2 movie clips in my scene, one is charlie brown running and another is lucy lifting a football. The movie clip instances are aptly named: lucyLifting and charlieRunning. When I get to frame 75, I run the following code: stop(); trace(lucyLifting); trace(charlieRunning); lucyLifing.stop(); charlieRunning.stop(); and I get the following output: [object MovieClip] null Why isn't it recognizing my second movie clip instance? This is very frustrating.... Thank you in advance.

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  • Difference between PORT and LATCH on PIC 18F

    - by acemtp
    I already read the datasheet and google but I still don't understand something. In my case, I set PIN RC6 of a PIC18F26K20 in INPUT mode: TRISCbits.TRISC6 = 1; Then I read the value with PORT and LATCH and I have different value! v1 = LATCbits.LATC6; v2 = PORTCbits.RC6; v1 gives me 0 where v2 gives 1. Is it normal? In which case we have to use PORT and in which case LATCH?

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  • JavaEE in netbeans giving BUILD FAILED error upon deployment

    - by user312402
    When I try to run my Java EE program in Netbeans consisting of servlets (java pages), JSP's, beans(java pages) and HTML pages I get this error in the output: In-place deployment at C:\Users\Derek\Documents\NetBeansProjects\EJBProject\EJBProject-war\build\web Initializing... deploy?path=C:\Users\Derek\Documents\NetBeansProjects\EJBProject\EJBProject-war\build\web&name=EJBProject-war&force=true failed on Personal GlassFish v3 Domain C:\Users\Derek\Documents\NetBeansProjects\EJBProject\EJBProject-war\nbproject\build-impl.xml:611: The module has not been deployed. BUILD FAILED (total time: 1 second) And then in the command prompt when I run asant run in the appropriate directory, I get: C:\Users\Derek\Documents\NetBeansProjects\EJBProject\nbproject\build-impl.xml:19: Class org.apache.tools.ant.taskdefs.condition.Not doesn't support the nested "antversion" element. Do you know why this would be? Why won't netbeans deploy my application so I can run and test it?

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  • Java JDBC: Reply.fill()

    - by Harv
    Hi, I get the following exception at times: com.ibm.db2.jcc.b.gm: [jcc][t4][2030][11211][3.50.152] A communication error occurred during operations on the connection's underlying socket, socket input stream, or socket output stream. Error location: Reply.fill(). Message: Connection reset. ERRORCODE=-4499, SQLSTATE=08001 The problem is that, the code executes successfully for quite some time and then suddenly I get this exception. However it runs perfrectly when I run the code again. Could some one please tell me what could be wrong and provide me some pointers to resolve this. Thanks, Harveer

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  • Brute force characters into a textbox in c#

    - by Fred Dunly
    Hey everyone, I am VERY new to programming and the only language I know is C# So I will have to stick with that... I want to make a program that "test passwords" to see how long they would take to break with a basic brute force attack. So what I did was make 2 text boxes. (textbox1 and textbox2) and wrote the program so if the text boxes had the input, a "correct password" label would appear, but i want to write the program so that textbox2 will run a brute force algorithm in it, and when it comes across the correct password, it will stop. I REALLY need help, and if you could just post my attached code with the correct additives in it that would be great. The program so far is extremely simple, but I am very new to this, so. Thanks in advance. private void textBox2_TextChanged(object sender, EventArgs e) { } private void button1_Click(object sender, EventArgs e) { if (textBox2.Text == textBox1.Text) { label1.Text = "Password Correct"; } else { label1.Text = "Password Wrong"; } } private void label1_Click(object sender, EventArgs e) { } } } `

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  • django - dynamic form fieldsets

    - by user110029
    A form will be spitting out an unknown number of questions to be answered. each question contains a prompt, a value field, and a unit field. The form is built at runtime in the formclass's init method. I'd like each question rendered on the form as an inline: prompt, value(input-text), units (select). this seems a case perfect for iterable form fieldsets, which could be easily styled. but since fieldsets - such as those in django-form-utils are defined as tuples, they are immutable... and I can't find a way to define them at runtime. is this possible, or perhaps another solution?

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  • How to read STDIN into string variable until EOF in C?

    - by NovumCoder
    Hi, im getting "Bus Error" trying to read stdin into a char* variable. I just want to read whole stuff coming over stdin and put it first into a variable, then continue working on the variable. My Code is as follows: char* content; char* c; while( scanf( "%c", c)) { strcat( content, c); } fprintf( stdout, "Size: %d", strlen( content)); But somehow i always get "Bus error" returned by calling "cat test.txt | myapp", where "myapp" is the compiled code above. My question is how do i read stdin until EOF into a variable? As you see in the code, i just want to print the size of input coming over stdin, in this case it should be equal to the size of the file "test.txt". I thought just using scanf would be enough, maybe buffered way to read stdin?

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  • Vectorizatoin of index operation for a scipy.sparse matrix

    - by celil
    The following code runs too slowly even though everything seems to be vectorized. from numpy import * from scipy.sparse import * n = 100000; i = xrange(n); j = xrange(n); data = ones(n); A=csr_matrix((data,(i,j))); x = A[i,j] The problem seems to be that the indexing operation is implemented as a python function, and invoking A[i,j] results in the following profiling output 500033 function calls in 8.718 CPU seconds Ordered by: internal time ncalls tottime percall cumtime percall filename:lineno(function) 100000 7.933 0.000 8.156 0.000 csr.py:265(_get_single_element) 1 0.271 0.271 8.705 8.705 csr.py:177(__getitem__) (...) Namely, the python function _get_single_element gets called 100000 times which is really inefficient. Why isn't this implemented in pure C? Does anybody know of a way of getting around this limitation, and speeding up the above code? Should I be using a different sparse matrix type?

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  • Calling oracle stored procedure from Excel - VBA

    - by Ram
    I have to execute an Oracle stored procedure from vba (Excel) with around 38 input parameters. The stored procedure will insert some values in the destination table once that is executed. When it is executed through VBA the number of fields which is inserted is less than when it is executed directly from the backend (oracle). For example it is creating around 17 fields of records while executing directly from the back end. (I have created a wrapper class in the back-end and passing the same parameter values in the back-end.). It is creating around 15 fields of records while executing from the excel VBA in the destination table. Kindly let me know what could be the possible reasons for this.

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  • vs2010 asp.net : Procedure or function expects parameter which was not supplied.

    - by dotnet-practitioner
    I have googled for this issue but listed solutions are not working for me... I get the following error message: Procedure or function 'ContactHide' expects parameter '@ContactID', which was not supplied. Here is my setup..What am I missing? Please help? Debugger shows that I am supplying ContactID correctly in my C# code behind code. <asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$ ConnectionStrings:MYDBConnectionString1 %>" UpdateCommand="ContactHide" UpdateCommandType="StoredProcedure" > int contactid= Convert.ToInt32(e.CommandArgument); SqlDataSource2.UpdateParameters.Add("@ContactID", System.Data.DbType.Int32, "1"); SqlDataSource2.UpdateParameters["@ContactID"].DefaultValue = contactid.ToString(); SqlDataSource2.Update(); ALTER PROCEDURE dbo.ContactHide @ContactID int /* ( @parameter1 int = 5, @parameter2 datatype OUTPUT ) */ AS Update Contacts set Visible = 0 where ContactID = isnull(@ContactID,-1) /* SET NOCOUNT ON */ RETURN

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  • WCF Global(.asax) Behavior

    - by Theofanis Pantelides
    Hi, I want to create a global option that when a REST call contains &format=json to output the response as a JSON string. If I enter the following String in my method it works: WebOperationContext.Current.OutgoingResponse.Format = WebMessageFormat.Json; However, if I add this line, anywhere in my Global.asax file, I get a nullException for Current Context: String format = ""; if (HttpContext.Current.Request.QueryString["format"] != null) format = HttpContext.Current.Request.QueryString["format"]; if (String.Equals("json", format, StringComparison.OrdinalIgnoreCase)) System.ServiceModel.Web.WebOperationContext.Current.OutgoingResponse.Format = System.ServiceModel.Web.WebMessageFormat.Json; The exception is triggered here: System.ServiceModel.Web.WebOperationContext.Current Anyone know how I can add this functionality globally (WCF)?

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  • want to "saveas" openoffice word document into text by perl program..

    - by siva prasad
    hi all... i need a way to "saveas" .doc file in open office to .txt .i need a program in Perl which can do that automatically.that means i don't want to open that word document and go to saveas and do it...what i need is i will just give word document name and that script should give the corresponding txt file as output. one important thing is my system is Linux based one.i saw the same program for windows system here only. but i need this program in Linux. that to "antiword" ,"catdoc","wv ware" commends are not working in my Linux.. please help me regarding this. thank u in advance.

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  • Importing Thawte trial certificates into a Java keystore

    - by lindelof
    Hello, I'm trying to configure a Tomcat server with SSL. I've generated a keypair thus: $ keytool -genkeypair -alias tomcat -keyalg RSA -keystore keys Next I generate a certificate signing request: $ keytool -certreq -keyalg RSA -alias tomcat -keystore keys -file tomcat.csr Then I copy-paste the contents of tomcat.csr into a form on Thawte's website, asking for a trial SSL certificate. In return I get two certificates delimited with -----BEGIN ... -----END, that I save under tomcat.crt and thawte.crt. (Thawte calls the second certificate a 'Thawte Test CA Root' certificate). When I try to import either of them it fails: $ keytool -importcert -alias tomcat -file tomcat.crt -keystore keys Enter keystore password: keytool error: java.lang.Exception: Failed to establish chain from reply $ keytool -importcert -alias thawte -file thawtetest.crt -keystore keys Enter keystore password: keytool error: java.lang.Exception: Input not an X.509 certificate Adding the -trustcacerts option to either of these commands doesn't change anything either. Any idea what I am doing wrong here?

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