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• USB device Set Attribute in C#

  - by p19lord

  I have this bit of code: DriveInfo[] myDrives = DriveInfo.GetDrives(); foreach (DriveInfo myDrive in myDrives) { if (myDrive.DriveType == DriveType.Removable) { string path = Convert.ToString(myDrive.RootDirectory); DirectoryInfo mydir = new DirectoryInfo(path); String[] dirs = new string[] {Convert.ToString(mydir.GetDirectories())}; String[] files = new string[] {Convert.ToString(mydir.GetFiles())}; foreach (var file in files) { File.SetAttributes(file, ~FileAttributes.Hidden); File.SetAttributes(file, ~FileAttributes.ReadOnly); } foreach (var dir in dirs) { File.SetAttributes(dir, ~FileAttributes.Hidden); File.SetAttributes(dir, ~FileAttributes.ReadOnly); } } } I have a problem. It is trying the code for Floppy Disk drive first which and because no Floppy disk in it, it threw the error The device is not ready. How can I prevent that?

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• t-sql getting leaf nodes

  - by stackoverflowuser

  Based on following table (I have kept spaces between the rows for clarity) Path ----------- \node1\node2\node3 \node1\node2\node3\node5 \node1\node6\node3 \node1\node4\node3 \node1\node4\node3\node7 \node1\node4\node3\node8 \node1\node4\node3\node9 \node1\node4\node3\node9\node10 I want to get all the paths containing leaf node. So for instance, following will be considered leaf nodes for path \node1\node4\node3 \node1\node4\node3\node7 \node1\node4\node3\node8 \node1\node4\node3\node9\node10 The following will be the output: Output --------------------------- \node1\node2\node3\node5 \node1\node6\node3 \node1\node4\node3\node7 \node1\node4\node3\node8 \node1\node4\node3\node9\node10 Pls. suggest. Thanks.

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• What's the most auditable way to organize database maintenance scripting/scheduling?

  - by RenderIn

  I'm using PHP, Oracle and crontab. Crontab is invoking a php script, which is going to synchronize some data between a local and remote database. First I thought about putting this all in one large, anonymous inline PL/SQL block and executing it in PHP. The problem is that without creating a table to audit the procedure it's really opaque to my PHP code until it returns. And then when it does return, the best I can do is receive a string in an out parameter which I've concatenated together as an audit log. Then I considered breaking it up into several SQL statements and have PHP do some intermediate auditing/logging and manipulation of the data between each of them. I'm not really satisfied with either of these. How do you organize maintenance code that is called in a cronjob?

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• How to ensure consistency of enums in Java serialization?

  - by Uri

  When I serialize an object, I can use the serialVersionUID mechanism at the class level to ensure the compatibility of the two types. However, what happens when I serialize fields of enum values? Is there a way to ensure that the enum type has not been manipulated between serialization and deserialization? Suppose that I have an enum like OperationResult {SUCCESS, FAIL}, and a field called "result" in an object that is being serialized. How do I ensure, when the object is deserialized, that result is still correct even if someone maliciously reversed the two? (Suppose the enum is declared elsewhere as a static enum) I am wondering out of curiosity - I use jar-level authentication to prevent manipulation.

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• How to set up a different context to point to an external directory outside webapps Tomcat/Java

  - by pinkb

  Hi Folks, I am successful to map an external directory by creating an xml file like : <Context path="/uploads" docBase="C:\uploads\photos" crossContext="true"/> And I named this xml file as uploads.xml and saved under "#Tomcat\conf\Catalina\localhost" here # = Directory where Tomcat has been installed. And when I start Tomcat(5) from cammand line (batch file) i.e. startup.bat The images can be accessed normally like "http://localhost:8080/uploads/user1.png" It works. Actually I am using IntelliJ Idea 8 for devevelopment. When I start Tomcat from IntelliJ Idea, I am not able to access the context i.e. the images. "http://localhost:8080/uploads/user1.png" It shows "HTTP 400 Bad Request" The context path for my project is "http://localhost:8080/spark/" Any help or suggestion is needed at the earliest time. Looking forward to as many appreciative responses as possible. Thanx Pink

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• Increment number in string

  - by iform

  Hi, I am stumped... I am trying to get the following output until a certain condition is met. test_1.jpg test_2.jpg .. test_50.jpg The solution (if you could remotely call it that) that I have is fileCount = 0 while (os.path.exists(dstPath)): fileCount += 1 parts = os.path.splitext(dstPath) dstPath = "%s_%d%s" % (parts[0], fileCount, parts[1]) however...this produces the following output. test_1.jpg test_1_2.jpg test_1_2_3.jpg .....etc The Question: How do I get change the number in its current place (without appending numbers to the end)? Ps. I'm using this for a file renaming tool.

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• Can I ask ANT to look into .classpath for external jars?

  - by kunjaan

  Right now I have <!-- Classpath declaration --> <path id="project.classpath"> <fileset dir="${lib.dir}"> <include name="**/*.jar" /> <include name="**/*.zip" /> </fileset> </path> <!-- Compile Java source --> <target name="compile" depends="clean"> <mkdir dir="${build.dir}" /> <javac srcdir="${src.java.dir}" destdir="${build.dir}" nowarn="on"> <classpath refid="project.classpath" /> </javac> </target> Is there someway I can tell ANT to look into the eclipse's .classpath and figure out the external jars?

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• Is this the best way to get the size of a Paper via CUPS?

  - by Lawrence Johnston

  I've got a CUPS job control file. I need to get the actual dimensions of the print that was made. This is the way I've figure out to do it: Get the paper name using the media attribute. (e.g. Letter) Get the printer uri from the printer-uri attribute. (e.g. ipp://localhost/printers/MyPrinter) Get the printer name by passing the printer uri to the IPP_GET_PRINTER_ATTRIBUTES operation and getting the printer-name attribute. (e.g. MyPrinter) Get the path to the PPD passing the printer name to the the cupsGetPPD method. Open the PPD passing the path to the PPD to the ppdOpenFile method. Get the paper size by passing the PPD and paper name to the ppdPageSize method. This will work, but it seems a bit roundabout. Is there a more efficient way of getting what I need?

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• TSQL - create a stored proc inside a transaction statement

  - by Chris L

  I have a sql script that is set to roll to production. I've wrapped the various projects into separate transactions. In each of the transactions we created stored procedures. I'm getting error messages Msg 156, Level 15, State 1, Line 4 Incorrect syntax near the keyword 'procedure'. I created this example script to illustrate Begin Try Begin Transaction -- do a bunch of add/alter tables here -- do a bunch of data manipulation/population here -- create a stored proc create procedure dbo.test as begin select * from some_table end Commit End Try Begin Catch Rollback Declare @Msg nvarchar(max) Select @Msg=Error_Message(); RaisError('Error Occured: %s', 20, 101,@Msg) With Log; End Catch The error seems to imply that I can't create stored procs inside of transaction, but I'm not finding any docs that say otherwise(maybe google isn't being freindly today).

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• Handle FileUploader.

  - by jax-coolboy

  i want to get the whole path of FileUpload and change the image when FileUpload OnChanged event triggered at Client Side.

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• Set global maxRequestLength value in web.config- for all pages

  - by Albert

  I currently have my web.config location section set up like this <location path="page1.aspx"> <system.web> <httpRuntime maxRequestLength="65536" executionTimeout="3600"/> </system.web> </location> <location path="page2.aspx"> <system.web> <httpRuntime maxRequestLength="65536" executionTimeout="3600"/> </system.web> </location> etc with one entry for each page. How can I set the maxRequestLength for all pages, instead of one at a time?

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• Project-wide additional library paths -- MSVS2008

  - by sacamano

  Hi there. I'm setting up a VC++ project in MS Visual Studio 2008 that'll be used by several people. I wanted to keep things as simple as possible so I've set up Additional Include Directories via the Project properties. I've also set up additional library files via Tools - Options - Projects and Solutions - VC++ Directories. However, my issue is that I really need to set up Additional library PATHs, because I am using an SDK which does inline linking of libraries. I could just tell each one of the participants to manually add the library path to their MSVS2008 environment, but it would be handy if I could integrate the RELATIVE library path in the project itself.

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• how to find which libraries to link to? or, how can I create *-config (such as sdl-config, llvm-con

  - by numeric

  Hey, I want to write a program that outputs a list of libraries that I should link to given source code (or object) files (for C or C++ programs). In *nix, there are useful tools such as sdl-config and llvm-config. But, I want my program to work on Windows, too. Usage: get-library-names -l /path/to/lib a.cpp b.cpp c.cpp d.obj Then, get-library-names would get a list of function names that are invoked from a.cpp, b.cpp, c.cpp, and d.obj. And, it'll search all library files in /path/to/lib directory and list libraries that are needed to link properly. Is there such tool already written? Is it not trivial to write a such tool? How do you find what libraries you should link to? Thanks.

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• How to find the exact name of the view in asp.net mvc (including the case)

  - by Charles Prakash Dasari

  I have a control in ASP.NET MVC that spits out JavaScript in the page header (in the view page). I derive some values from the current view name (including its case). Let's say we are talking about the path: /Home/Index - my control spits out JavaScript to call a function with the view name - in its exact case - e.g. someFunction('Index'). Now when I try to navigate to my view using '/home/index', the view name is returned as 'index' which is causing issues in my JavaScript as I rely on the casing for it on the JS side. Is there any way to know the exact view name (as it was defined) from the path that got mapped into this view.

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• Centralized way of organizing urls in Jersey?

  - by drozzy

  Forgive me if I am asking an obvious question (maybe I missed it in the docs somewhere?) but has anyone found a good way to organize their URLs in Jersey Java framework? I mean organizing them centrally in your Java source code, so that you can be sure there are not two classes that refer to the same Url. For example django has a really nice regex-based matching. I was thinking of doing something like an enum: enum Urls{ CARS ("cars"), CAR_INFO ("car", "{info}"); public Urls(String path, String args) ... } but you can imagine that gets out of hand pretty quickly if you have urls like: cars/1/wheels/3 where you need multiple path-ids interleaved with one another... Any tips?

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• What's the most efficient way to manage large datasets with Javascript/jQuery in IE?

  - by RenderIn

  I have a search that returns JSON, which I then transform into a HTML table in Javascript. It repeatedly calls the jQuery.append() method, once for each row. I have a modern machine, and the Firefox response time is acceptable. But in IE 8 it is unbearably slow. I decided to move the transformation from data to HTML into the server-side PHP, changing the return type from JSON to HTML. Now, rather than calling the jQuery.append() time repeatedly, I call the jQuery.html() method once with the entire table. I noticed Firefox got faster, but IE got slower. These results are anecdotal and I have not done any benchmarking, but the IE performance is very disappointing. Is there something I can do to speed up the manipulation of large amounts of data in IE or is it simply a bad idea to process very much data at once with AJAX/Javascript?

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• WPF Binding to Items within a collection? (or converter with parameters)

  - by Sonic Soul

  i am using a WPF DataGrid, and in my Details row, i would like to show separate objects within a sub collection of each grid item. Is it possible to have a finer control of Path? for example something like... Path=SubCollection['ItemX'] etc.. also, if i was to use a converter, i don't want to have to create a separate converter for each item.. so would there be a way to supply a parameter to a converter that could than determine which collection item to return??

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• dealing with IO vs pure code in haskell

  - by Drakosha

  I'm writing a shell script (my 1st non-example in haskell) which is supposed to list a directory, get every file size, do some string manipulation (pure code) and then rename some files. I'm not sure what i'm doing wrong, so 2 questions: How should i arrange the code in such program? I have a specific issue, i get the following error, what am i doing wrong? error: Couldn't match expected type [FilePath]' against inferred typeIO [FilePath]' In the second argument of mapM', namelyfileNames' In a stmt of a 'do' expression: files <- (mapM getFileNameAndSize fileNames) In the expression: do { fileNames <- getDirectoryContents; files <- (mapM getFileNameAndSize fileNames); sortBy cmpFilesBySize files } code: getFileNameAndSize fname = do (fname, (withFile fname ReadMode hFileSize)) getFilesWithSizes = do fileNames <- getDirectoryContents files <- (mapM getFileNameAndSize fileNames) sortBy cmpFilesBySize files

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• Is it possible to dynamically change the style/template of a control?

  - by elggarc

  I am creating a UserControl in Silverlight 4 which has a watermarked background. The watermark should change depending on the underlying 'type' the UserControl is representing. The watermark is created using a Path and I have extracted all the properties into a style. I was wondering if it would be possible to change the style of the Path at runtime based on some known value. I am using MVVM and Unity. Perhaps I could bind the style somehow? Or could I inject the style when the view is created? I may have to do this with control templates, hence the reference in the title. Thanks...

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• NullPointerException when accessing image files in a .jar file

  - by user548240

  Hi, I have pretty much tried everything but still have this same problem. I have the following setup: I have a images.jar containing a folder called 'images' in which there are multiple image files. I add images.jar to the java build path of the project in eclipse, and i've been trying to use the following code to access the individual images in the jar: URL url = this.getClass().getResource("images/a.png"); ImageIcon icon = new ImageIcon (url); Unfortunately, the URL object is always NULL. I don't think this has anything to do with where I put images.jar file as it is added to the classpath in eclipse. I have also tried using the path '/images/a.png', but still the same problem. Any suggestion would be extremely welcome! Thanks.

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• Drop down list population fails after validation fails

  - by sarah

  Hi All, I am polpulating data in drop down reading from request scope,i am doing validaiton of fe w field after submission i wont get data in drop down i am using struts and the corresponding form bean defn is like <action path="/userProcess" name="userForm" type="com.actions.UserManagementAction" parameter="method" input="/views/AddUsers.jsp" scope="request" > <forward name="success" path="/views/User_Management.jsp" /> </action> and the drop down listing is <select name="roleName"> <c:forEach items="${roleNames}" var="role"> <option value="${role}">${role}</option> </c:forEach> </select> how should i handle this ?

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• Are there any real life uses for the Java byte primitive type?

  - by Thorbjørn Ravn Andersen

  For some inexplicable reason the byte primitive type is signed in Java. This mean that valid values are -128..127 instead of the usual 0..255 range representing 8 significant bits in a byte (without a sign bit). This mean that all byte manipulation code usually does integer calculations and end up masking out the last 8 bits. I was wondering if there is any real life scenario where the Java byte primitive type fits perfectly or if it is simply a completely useless design decision? EDIT: The sole actual use case was a single-byte placeholder for native code. In other words, not to be manipulated as a byte inside Java code.

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• Is it possible to access JSON properties with relative syntax when using JSON defined functions?

  - by Justin Vincent

  // JavaScript JSON var myCode = { message : "Hello World", helloWorld : function() { alert(this.message); } }; myCode.helloWorld(); The above JavaScript code will alert 'undefined'. To make it work for real the code would need to look like the following... (note the literal path to myCode.message) // JavaScript JSON var myCode = { message : "Hello World", helloWorld : function() { alert(myCode.message); } }; myCode.helloWorld(); My question is... if I declare functions using json in this way, is there some "relative" way to get access to myCode.message or is it only possible to do so using the literal namespace path myCode.message?

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• Will Haskell be a good choice for my task?

  - by Narzanka

  I'm starting a new project and don't know which language to use. My 'must have' requirements are: Be able to run on Windows/LinuxMacOs natively (native executable) - user should be able to just run the exe (when on Windows for example) and see the results. No runtimes/interpreters (no jvm, clr, etc) - one file download should be enough to run the application. Full unicode support. Be able to manipulate OS threads (create them, run multiple tasks in parallel on multi-core CPUs, etc). Be reasonably fast (Python level performance and better). To have some kind of standard library that does low-level, mundane tasks. Not very niche and have some community behind it to be able to ask questions. My 'nice to have' requirements are: Language should be functional It should have good string manipulation capabilities (not necessarily regex) Not extremely hard to learn I'm thinking about Haskell now but keeping in mind OCaml as well. Please advice if my choice is correct.

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• Java Trusting ssl CA

  - by LuigiEdlCarno

  I guess I am out of ideas here. I am trying to consume a web service in java which has an ssl certificate. I createt a a keystore file in which I have added the certificate. The file lies in my project folder. I imported it using: System.setProperty("javax.net.ssl.keyStore", "folder\\keystore.jks"); System.setProperty("javax.net.ssl.keyStorePassword", "SECRET"); Apparently, the web service call checks the keystore because when giving a wrong path to the file the application throws an exception when invoking the WS, not when setting the system property. Anyway, when giving the correct path to the keystore file, I still get AxisFault faultCode: {http://xml.apache.org/axis/}HTTP faultSubcode: faultString: (401)Authorization Required Someone told me I had to trust the CA, before any of this would work. How do I do this?

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