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  • Where can I find the IRQ number in request_irq function?

    - by sasayins
    Hi, Im learning device driver programming in Linux. And I'm wondering where I could the IRQ number in the request_irq function. int request_irq (unsigned int irq, void (*handler) (int, void *, struct pt_regs *), unsigned long irqflags, const char *devname, void *dev_id); In the irq parameter, what value or where could I find that value to put in the request_irq function? Thanks

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  • JUnit for Functions with Void Return Values

    - by RobotNerd
    I've been working on a Java application where I have to use JUnit for testing. I am learning it as I go. So far I find it to be useful, especially when used in conjunction with the Eclipse JUnit plugin. After playing around a bit, I developed a consistent method for building my unit tests for functions with no return values. I wanted to share it here and ask others to comment. Do you have any suggested improvements or alternative ways to accomplish the same goal? Common Return Values First, there's an enumeration which is used to store values representing test outcomes. public enum UnitTestReturnValues { noException, unexpectedException // etc... } Generalized Test Let's say a unit test is being written for: public class SomeClass { public void targetFunction (int x, int y) { // ... } } The JUnit test class would be created: import junit.framework.TestCase; public class TestSomeClass extends TestCase { // ... } Within this class, I create a function which is used for every call to the target function being tested. It catches all exceptions and returns a message based on the outcome. For example: public class TestSomeClass extends TestCase { private UnitTestReturnValues callTargetFunction (int x, int y) { UnitTestReturnValues outcome = UnitTestReturnValues.noException; SomeClass testObj = new SomeClass (); try { testObj.targetFunction (x, y); } catch (Exception e) { UnitTestReturnValues.unexpectedException; } return outcome; } } JUnit Tests Functions called by JUnit begin with a lowercase "test" in the function name, and they fail at the first failed assertion. To run multiple tests on the targetFunction above, it would be written as: public class TestSomeClass extends TestCase { public void testTargetFunctionNegatives () { assertEquals ( callTargetFunction (-1, -1), UnitTestReturnValues.noException); } public void testTargetFunctionZeros () { assertEquals ( callTargetFunction (0, 0), UnitTestReturnValues.noException); } // and so on... } Please let me know if you have any suggestions or improvements. Keep in mind that I am in the process of learning how to use JUnit, so I'm sure there are existing tools available that might make this process easier. Thanks!

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  • Implementing a very simple 'Wine Rating System' in Haskell

    - by Alex N
    Hello, I have just started learning Haskell and have got stumped on how to add a rating to a custom data type. The data type I'm using has a name, a year and a tuple (userName and their rating), it looks like: data Wine = Wine String Int [Rating] deriving (Eq,Ord,Show,Read) type Rating = (String, Int) I wanted to allow a user to rate a given wine from a database, stored as [Wine] but cant figure out how to to it. Any pointers or suggestions would be greatly appreciated! Thanks.

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  • C++: ptr->hello(); /* VERSUS */ (*ptr).hello();

    - by Joey
    i was learning about c++ pointers... so the "-" operator seemed strange to me... instead of ptr-hello(); one could write (*ptr).hello(); because it also seems to work, so i thought the former is just a more convenient way is that the case or is there any difference?

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  • how to convince website users to use openid

    - by isolatedIterator
    Perhaps this isn't the best forum for this question. If so, would one of the other child sites be more suitable? I am wondering how to overcome the learning curve of convincing a non-technical bunch of users how and what open id is. how do you convince users that it is a good thing and that they want to use it?

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  • Mobile Silverlight Applications

    - by snorlaks
    Hi, Have You got any tutorials, books, any good resources to start creating mobile games using silverlight ? Maybe any good resource on writing 2d games in silverlight for pc? Ay way do You think that its worth learning it or any other technology would be better and have probably shinier future ?

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  • Struts for IBM Application Server Toolkit

    - by Timbuck
    I'm looking to build a Struts 1.2.x application for Websphere, using IBM's Application Server Toolkit. Are there any plugins available for this toolkit (it is a version of Eclipse) that are known to help with this type of development? I am new to Struts so I will also be learning about the technology as I go along, but I want to make it as painless as possible. A web search has only brought up things such as "MyEclipse", which I can't use in the corporate environment.

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  • What does a forward slash before a pipe in cmd do to remove the line ending of an echo?

    - by user66001
    This code: @echo off echo/|set /p ="Executing backup...." echo/|set /p =" backup procedure" ... came from Echoing in the same line and produces the below output in a cmd window: Executing backup....backup procedure However, I cant seem to find an explanation through google on what the forward slash does to the ¿pipe? to cause set's output to be echoed to the console / stdout If anyone could also suggest a good website for learning more about cmd / cmd programs' features like this, it would be appreciated.

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  • Missing Project templates in XCode

    - by coure06
    I have installed xcode 3.2 with iphone SDK. (without Mac OS 10.4 SDK). WHen i create new project i only got these options for Mac OS -- Application -- Framework and Library -- Application plugin -- System plugin --Other But a book named: Programming Object C 2.0. From which i am learning object C. Its showing XCode with these templates for Mac OS --Application --Audio Units --Automater actions --Bundles --Command Line Utility --dynamic library --Framework --Java --Kernal Extensions --Standard Apple plugin --Static Library --Other I need the Command Line Utility template so that can create sample projects mentioned in book.

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  • Align objects to curve with canvas

    - by mitjak
    Is it possible? I'm learning canvas at the moment, and while it's fun to position objects programmatically, it would be most interesting to come up with a way to align them to a curve. E.g. align a series of squares back to back along a wavy line or a circle.

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  • How to create a web server?

    - by Dave
    I understand that there are already alot of web server out there. But i feel like creating one for learning purpose. Is it something i should try to figure out and any guides or tutorials on this?

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  • Multi-line code in PHP interactive shell

    - by Andrei
    I'm learning to use the PHP interactive shell, but I'm having trouble with multi-line code. Using backslashes like in the UNIX shells doesn't seem to work. What am I doing wrong ? php > function test(){\ php { echo "test";\ php { }\ php > test(); PHP Parse error: syntax error, unexpected T_ECHO, expecting T_STRING in php shell code on line 2

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  • How to execute machine language from memory?

    - by Mike Curry
    I wrote a program to compile a simple text program to a compiled executable... Is it possible that I can load an executable to memory an some how point a pc counter to the memory space at will? Here is what I made that I would like to store the programs to memory for execution on demand... Kind of wanting to make a little web language like php but compile it... Just for learning. http://spiceycurry.blogspot.com/2010/05/simple-compilable-programming-language.html

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  • Recursive insert-method for a linked list

    - by user3726477
    I'm learning C# and I've made a recursive insert-method for a linked list: public static int recursiveInsert(ref int value, ref MyLinkedList list) { if (list == null) return new MyLinkedList(value, null); else { list.next = recursiveInsert(ref int value, ref list.next); return list; } } How would you modify this method to make the recursive call look like this: recursiveInsert(value, ref list.next) instead of: list.next = recursiveInsert(ref int value, ref list.next);

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  • Where to learn about the Google Maps API v2 in Android

    - by misguided
    I am trying to learn a lot more about the Google Maps API in Android. I have seen the boston tutorials , which are very helpful in learning a lot of things related to android . But unfortunately , the tutorial talks about a earlier version on Google Maps API. I was wondering if there are any other sites which the experts would recommend(other than the reference on actual developers.google.com website). PS: specifically looking for android with latest version of google maps .References other than the one of developers.google.com

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