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  • Java string too long?

    - by wrongusername
    I have the following code in Java (which worked just fine in C++ for some reason) which produces an error: int a; System.out.println("String length: " + input.length()); for(a = 0; ((a + 1) * 97) < input.length(); a++) { System.out.print("Substring at " + a + ": "); System.out.println(input.substring(a * 97, 97)); //other code here... } Output: String length: 340 Substring at 0: HelloHelloHelloHelloHelloHelloHelloHelloHelloHelloHelloHelloHelloHelloHelloHelloHelloHelloHelloHe Substring at 1: Exception in thread "AWT-EventQueue-0" java.lang.StringIndexOutOfBoundsException: String index out of range: -97 //long list of "at ..." stuff Substring at 2: Using a string of length 200, however, the following output is produced: String length: 200 Substring at 0: HelloHelloHelloHelloHelloHelloHelloHelloHelloHelloHelloHelloHelloHelloHelloHelloHelloHelloHelloHe Substring at 1: That is it; no exceptions raised, just... nothing. What is happening here?

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  • Magento Design Patterns

    - by JonB
    Magento, IMHO, represents a PHP system that is built on well thought-out coding principles - reuseable design patterns being one of them. In terms of an example of a PHP system, I think it can be considered pretty cutting edge and therefore worth considering from an architectural point of view. As I understand it, there are many design patterns that are available to the OOP developer. Seeing such patterns being put to use in an open-source system such as Magento allows a developer to view examples of such patterns in real use and in situ, rather than in examples that can sometimes be rather achedemic, and even a little misleading. As such, I am wondering what patterns, other than the ones I have listed below, Magento programmers have used when developing for Magento. As a note, I understand that some of these patterns are in place as a consequence of being built on the Zend Framework, MVC / Front Controller being a couple of them, The obvious ones are: Factory: $product = Mage::getModel('catalog/product'); Singleton: $category = Mage::getSingleton('catalog/session'); Registry: $currentCategory = Mage::registry('current_category');

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  • Solaris: Is it OK to disable font services?

    - by cjavapro
    Is it OK to disable these services? # svcs -l '*font*' fmri svc:/application/font/stfsloader:default name Standard Type Services Framework (STSF) Font Server loader enabled true state online next_state none state_time Sun May 30 17:58:14 2010 restarter svc:/network/inetd:default fmri svc:/application/font/fc-cache:default name FontConfig Cache Builder enabled true state online next_state none state_time Sun May 30 17:58:15 2010 logfile /var/svc/log/application-font-fc-cache:default.log restarter svc:/system/svc/restarter:default dependency require_all/none svc:/system/filesystem/local (online) dependency require_all/refresh file://localhost/etc/fonts/fonts.conf (online) dependency require_all/none file://localhost/usr/bin/fc-cache (online) #

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  • Unable to create unmanaged object using new keyword in managed C++

    - by chair79
    Hi all, I've created a class with a boost::unordered_map as a member, Linkage.h #ifndef LINKAGE_H #define LINKAGE_H #include <boost/unordered_map.hpp> class Linkage { private: boost::unordered_map<int, int> m_IOMap; public: .... }; Linkage.cpp #include "stdafx.h" ... // methods and in the managed side of C++, I try to create the pointer of the obj: private: System::Void Form1_Load(System::Object^ sender, System::EventArgs^ e) { Linkage* m_pLink = new Linkage(); ..... } However this produces errors: Error 4 error LNK2005: "private: static unsigned int const boost::detail::type_with_alignment_imp<4>::found" (?found@?$type_with_alignment_imp@$03@detail@boost@@$$Q0IB) already defined in Proj_Test.obj Linkage.obj ..... Error 7 fatal error LNK1169: one or more multiply defined symbols found Could anyone explain to me pls? Thanks.

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  • No Secure Random Number Generators Available in JDK

    - by rwbutler
    Hi, I am currently running JDK 6 on Windows 7 and have installed the Unlimited Strength Policy Files. I wrote a Java app some time ago which used to work but now fails, giving an error message indicating that the SHA1PRNG SecureRandom is not available. I have tried printing a list of cryptographic providers available on the platform and it would appear that there are no secure random number generators available - does anyone have any idea why this might be? Many thanks in advance for your help!

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  • Differences between matrix implementation in C

    - by tempy
    I created two 2D arrays (matrix) in C in two different ways. I don't understand the difference between the way they're represented in the memory, and the reason why I can't refer to them in the same way: scanf("%d", &intMatrix1[i][j]); //can't refer as &intMatrix1[(i * lines)+j]) scanf("%d", &intMatrix2[(i * lines)+j]); //can't refer as &intMatrix2[i][j]) What is the difference between the ways these two arrays are implemented and why do I have to refer to them differently? How do I refer to an element in each of the arrays in the same way (?????? in my printMatrix function)? int main() { int **intMatrix1; int *intMatrix2; int i, j, lines, columns; lines = 3; columns = 2; /************************* intMatrix1 ****************************/ intMatrix1 = (int **)malloc(lines * sizeof(int *)); for (i = 0; i < lines; ++i) intMatrix1[i] = (int *)malloc(columns * sizeof(int)); for (i = 0; i < lines; ++i) { for (j = 0; j < columns; ++j) { printf("Type a number for intMatrix1[%d][%d]\t", i, j); scanf("%d", &intMatrix1[i][j]); } } /************************* intMatrix2 ****************************/ intMatrix2 = (int *)malloc(lines * columns * sizeof(int)); for (i = 0; i < lines; ++i) { for (j = 0; j < columns; ++j) { printf("Type a number for intMatrix2[%d][%d]\t", i, j); scanf("%d", &intMatrix2[(i * lines)+j]); } } /************** printing intMatrix1 & intMatrix2 ****************/ printf("intMatrix1:\n\n"); printMatrix(*intMatrix1, lines, columns); printf("intMatrix2:\n\n"); printMatrix(intMatrix2, lines, columns); } /************************* printMatrix ****************************/ void printMatrix(int *ptArray, int h, int w) { int i, j; printf("Printing matrix...\n\n\n"); for (i = 0; i < h; ++i) for (j = 0; j < w; ++j) printf("array[%d][%d] ==============> %d\n, i, j, ??????); }

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  • Combining a web application with another (larger).

    - by Kevin Brown
    I'm writing a web app, initially meant to be stand-alone--it's essentially a survey with user-management/authentication built on Codeigniter. The company I'm doing this for wants to merge it with their main system so that it acts like a feature, or a sub-app of their website. What is the best thing for me to do? I think I could do one of two things: Finish my application, as I had planned to initially, and let them handle the merging.It would probably save me a headache. Stop where I am in development, and migrate my authentication system to theirs, migrate the payment system to use theirs, and then finish the app. In your opinion, or experience, what is the best thing to do?

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  • custom attribute changes in .NET 4

    - by Sarah Vessels
    I recently upgraded a C# project from .NET 3.5 to .NET 4. I have a method that extracts all MSTest test methods from a given list of MethodBase instances. Its body looks like this: return null == methods || methods.Count() == 0 ? null : from method in methods let testAttribute = Attribute.GetCustomAttribute(method, typeof(TestMethodAttribute)) where null != testAttribute select method; This worked in .NET 3.5, but since upgrading my projects to .NET 4, this code always returns an empty list, even when given a list of methods containing a method that is marked with [TestMethod]. Did something change with custom attributes in .NET 4? Debugging, I found that the results of GetCustomAttributesData() on the test method gives a list of two CustomAttributeData which are described in Visual Studio 2010's 'Locals' window as: Microsoft.VisualStudio.TestTools.UnitTesting.DeploymentItemAttribute("myDLL.dll") Microsoft.VisualStudio.TestTools.UnitTesting.TestMethodAttribute() -- this is what I'm looking for When I call GetType() on that second CustomAttributeData instance, however, I get {Name = "CustomAttributeData" FullName = "System.Reflection.CustomAttributeData"} System.Type {System.RuntimeType}. How can I get TestMethodAttribute out of the CustomAttributeData, so that I can extract test methods from a list of MethodBases?

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  • How to create curved Text on a Bitmap?

    - by TooFat
    I am currently dynamically creating a bitmap and using the graphics object from the string from the bitmap to Draw a string on it like so. System.Drawing.Graphics graph = System.Drawing.Graphics.FromImage(bmp); graph.DrawString(text, font, brush, new System.Drawing.Point(0, 0)); This returns a rectangle shaped bitmap with the string written straight across from left to right. I would like to also be able to draw the string in the shape of a rainbow. How can I do this?

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  • algorithm for checking addresses for matches?

    - by user151841
    I'm working on a survey program where people will be given promotional considerations the first time they fill out a survey. In a lot of scenarios, the only way we can stop people from cheating the system and getting a promotion they don't deserve is to check street address strings against each other. I was looking at using levenshtein distance to give me a number to measure similarity, and consider those below a certain threshold a duplicate. However, if someone were looking to game the system, they could easily write "S 5th St" instead of "South Fifth Street", and levenshtein would consider those strings to be very different. So then I was thinking to convert all strings to a 'standard address form' i.e. 'South' becomes 's', 'Fifth' becomes '5th', etc. Then I was thinking this is hopeless, and too much effort to get it working robustly. Is it? I'm working with PHP/MySql, so I have the limitations inherent in that system.

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  • How can one associate a 3ware controller with the corresponding /dev/tw?? device?

    - by barbaz
    I have a few 3ware RAID controllers installed in a system. Is there any way to figure out the mapping between the following identifiers, each describing in a way the very same RAID controller? The tw_cli reported controller id (e.g. c0,c1,c2,...) The corresponding device nodes that allow smartctl access via the 3ware driver (e.g. /dev/twa0, /dev/twa1, /dev/twl0) The block device presented to the system representing a RAID unit (/dev/sda, /dev/sdb,...)

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  • How is the filesystem of Wikipedia designed?

    - by Heo
    I read about FHS, and I started to consider the file system of wikipedia. On the one hand, I feel it is a security risk to let everyone know it. On the other hand, it is necessary for developers. For example, is there some rule to know where are all sitemaps and their indices located? So: How is the file system of Wikipedia designed?

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  • Finding the average of two number using classes and methods

    - by Have alook
    I want to use methods inside class. Q: find the average of two number using classes and methods. import java.util.*; class aaa { int a,b,sum,avrg; void average() { System.out.println("The average is ="+avrg); avrg=(sum/2); } } class ave { public static void main(String args[]){ aaa n=new aaa(); Scanner m=new Scanner(System.in); System.out.println("write two number"); n.a=m.nextInt(); n.b=m.nextInt(); n.average(); } }

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  • What's the max Windows 7 access possible to restrict tampering with single service?

    - by Crawford Comeaux
    I'm developing an ADHD management system for myself. Without going into detail (and as silly as it may sound for a grown man to need something like this), I need to build a me-proof service to run on my Windows 7 Ultra laptop. I still need fairly complete access to the system, though. How can I set things up so that I'm unable to "easily" (ie. within 3-5 mins without rebooting) stop the service or prevent it from running?

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  • How to create Bitmap object from a Graphics object ?

    - by vi.su.
    How to create Bitmap object from a Graphics object ? I would like to read pixels from my Graphics object. for example, like, System.Drawing.BitMap.GetPixel(). I am trying to find out empty area (all white, or of any colour) inside a pdf document, to write some graphics / image. I have tried like this, but it is not working. why the following code is not working as expected ? // // System.Drawing.Bitmap // System.Drawing.Graphics // Bitmap b = new Bitmap(width, height, graphics); // // In this case, for any (i, j) values, Bitmap.GetPixel returns 0 // int rgb = b.GetPixel(i, j).ToArgb(); ( posting this question again in .net-only context, removing other library dependencies )

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  • print webpage in two columns

    - by machaa
    Hi, How to print a webpage in two columns or one column as per the user input/choice. And when a take a print out I'm getting the website url on the top left side, How can we stop printing this? Regards

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  • Hash Digest / Array Comparison in C#

    - by Erik Karulf
    Hi All, I'm writing an application that needs to verify HMAC-SHA256 checksums. The code I currently have looks something like this: static bool VerifyIntegrity(string secret, string checksum, string data) { // Verify HMAC-SHA256 Checksum byte[] key = System.Text.Encoding.UTF8.GetBytes(secret); byte[] value = System.Text.Encoding.UTF8.GetBytes(data); byte[] checksum_bytes = System.Text.Encoding.UTF8.GetBytes(checksum); using (var hmac = new HMACSHA256(key)) { byte[] expected_bytes = hmac.ComputeHash(value); return checksum_bytes.SequenceEqual(expected_bytes); } } I know that this is susceptible to timing attacks. Is there a message digest comparison function in the standard library? I realize I could write my own time hardened comparison method, but I have to believe that this is already implemented elsewhere.

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  • Gigabyte GA-Z77X-D3H MB problems

    - by Hans
    I installed a new system last week. I've some issues with it. The system consists of a: Gigabyte GA-Z77X-D3H with F9 BIOS (latest) Intel Core i5 3570K proccesor Sapphire Radeon HD7850 2x 8GB Corsair 1600MHz memory OCZ Vertex 2 120G SSD Connected peripherals : 2 Samsung 940BF (1 via DVI on GFX card, 1 via an Displayport to DVI adapter) 1 Dell U2312HM monitor (displayport) Dell USB Hub (monitor) Wired mouse, wireless keyboard (logitech) Logitch G25 wheel Canon MP800 printer Okay, my issues are the following: if I plug in 1 or more monitor at DisplayPort during boot, most of the time it won't boot properly. I get an empty message screen of UEFI: only the header GIGABYTE DUEL BIOS appears. The system reboots itself, turns on for a few seconds (no video) and then reboots again. Now it starts all over again. This repeats until I remove all displayport monitors. Windows boots, and I can use them when I replug them. The graphics card has been running fine for a few weeks on an older system (intel Q6600). Another issue is; if I plug in my G25 steering wheel, the UEFI BIOS is inaccessible. It either gives the same empty UEFI screen, or the BIOS screen is rendering but crashes half way (so pieces of text and graphics are missing, and it has crashed). If I remove the G25, all is fine. To verify the graphics card is OK and the motherboard is causing these issues, I tried an NVIDIA 8800GT graphics card. This hasn't got Displayport, but it also cannot boot the BIOS with the G25 wheel plugged in. The PC also refuses to go into or out of standby. It just hangs when going into standby, and in other occasions (when it does succesfully do so) get out of standby. Power supply is OCZ StealthXStream 600W. Proccesor is 25 - 30C idle, ~55C stressed (Scythe Mugen 2). I am really puzzled what can be done to resolve this. I am not really waiting for an RMA request (otherwise I will return the MB for another type), because it will likely mean I have to wait very long before I get a replacement. Anyone else with a similar experience on this board/chipset or can help me troubleshoot this?

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  • Why are types found on an imported namepace but not on a fully qualified namespace after retargeting the framework?

    - by Paul Ferguson
    We've just re-targeted a VB.NET project from .Net 2.0 to 3.5. Various framework types are now missing from our project. Wherever the type is referenced using a fully qualified namespace it's missing. If the relevant namespace is imported for the type; it's found. For example, this doesn't find the type Object, with compiler error "System.Object is not defined.": Public Class Foo Inherits System.Object End Class However, this works ok: Imports System Public Class Foo Inherits [Object] End Class I've already tried re-opening the solution with no success.

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  • Program for Synchronizing folders across multiple computers automatically

    - by Mcad001
    I work in a company of about 20 people, I need to share some files with all of them in a folder(s) (files are constantly changed by me).., so they need to get the latest changed file automatically (pushed to their computer) What's the best program/system for this task? I need to be able to administrate their read/write access to the folder on a user level. Windows Live Mesh seemed to be perfect for me, but unfortunatly there's a limit of only 9 people in that system.

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  • .net, using PowerShell class to invoke a "[namespace.class]::method" style command

    - by Marco
    Hello, I created a powershell object via .net to invoke commands. When I invoke normal commands like 'Get-Process' I had no problems: ps.AddCommand("Get-Process").AddParameter(...).Invoke() but I'm not able to invoke a .net method with the syntax "[namespace.class]::method", just to make an example to invoke [System.IO.File]::Exists("c:\boo.txt"). I tried with ps.AddCommand("[System.IO.File]::Exists(\"c:\boo.txt\")").Invoke() ps.AddCommand("[System.IO.File]::Exists").AddArgument("c:\boo.txt\").Invoke() and some others. It always throws an exception which says that the command specified is not recognized. There is a way to invoke that type of command? Thanks

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