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  • How do I implement an higher lower game algorithm?

    - by lazorde
    The computer will guess a player’s number between 1 and 100. After each guess the human player should respond “higher”, “lower” or “correct”. Your program should be able to guess the player’s number in no more than 7 tries. Begin by explaining the game to the player, telling him/her to think of a number between 1 and 100. Make the computer do what you would normally do to guess a number in a certain range. Allow the user to respond with “higher”, “lower”, or “correct” after each computer guess. Output the number of tries it took the computer to guess the number. Make the game as user friendly as you can.

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  • Haskell: Why is it saying my function type is off?

    - by linkmaster03
    I wrote a little Haskell program to find the area of a triangle, primarily to practice custom types, but it keeps throwing the following error on compile: areafinder.hs:7:4: Couldn't match expected type 'Triangle' against inferred type 'm b' In a stmt of a 'do' expression: putStr "Base: " In the expression: do { putStr "Base: "; baseStr I'm not sure where 'm b' comes from, so I'm at a loss here. Why is it throwing this error, and what can I do to fix it? Here is my code: module Main where data Triangle = Triangle Double Double -- base, height getTriangle :: Triangle getTriangle = do putStr "Base: " baseStr Double calcTriangle (Triangle base height) = base * height main = putStrLn ("Area = " ++ show (calcTriangle getTriangle)) Thanks. :)

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  • How do I get the Bake console for CakePHP?

    - by ggfan
    I am having trouble getting the Bake console. I am on windows running xampp. I'm doing the IBM cakphp tutorial. Here is my directory: C:\\ xampp htdocs ibm2(a test project--orginally called cakephp) app cake vendors (etc) It says to To use Bake, cd into the /webroot/app directory and launch the Cake Console: ../cake/console/cake bake. You should be presented with a screen that looks like Figure 2. So I write in my command prompt till I am at: C:\xampp\htdocs\ibm2\app Then I type ../cake/console/cake bake but I get this error: '..' is not recognized as an internal or external command, operable program or batch file. What am I doing wrong? I use the window's command prompt

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  • How to prevent users from typing incorrect inputs ?

    - by ZaZu
    Hello, I want the program to loop a scan function if the user types anything else other than numbers.. My code is : do{ printf("Enter rows\n"); scanf("%d",&row); }while(row>='a' && row<='z'); but this code doesnt work .. I keep getting an error when typing in a letter. I tried manipulating around it and the whole thing loops infinitely ... What am I doing wrong ? Please help thanks !

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  • Hadoop Map Reduce job never finishes

    - by rohanbk
    I am running a Hadoop Map Reduce job using a Python Mapper and Reducer script, and Hadoop Streaming. Both my Map and Reduce jobs run till they are both 100%, but the job doesn't end. I know that when things go sour, Hadoop will terminate the job, but in this case, both stages reach a 100% and just never end. Has anyone else encountered anything similar? Also, how do I debug my program to figure out where things are going wrong? If I use a smaller input file, and I just run something like: $> cat input_file | mapper.py | sort | reduce.py >> output_file everything works perfectly fine. However, when I use Hadoop, things don't work out.

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  • How do I profile memory usage in my project

    - by Gacek
    Are there any good, free tools to profile memory usage in C# ? Details: I have a visualization project that uses quite large collections. I would like to check which parts of this project - on the data-processing side, or on the visualization side - use most of the memory, so I could optimize it. I know that when it comes to computing size of the collection the case is quite simple and I can do it on my own. But there are also certain elements for which I cannot estimate the memory usage so easily. The memory usage is quite big, for example processing a file of size 35 MB my program uses a little bit more than 250 MB of RAM.

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  • How can i sort DESC and ASC in list generic?

    - by Phsika
    How can I sort DESC and ASC in a generic list? With LINQ and without LINQ ? I'm using vs 2008. class Program { static void Main(string[] args) { List<int> li = new List<int>(); li.Add(456); li.Add(123); li.Add(12345667); li.Add(0); li.Add(1); li.Sort(); foreach (int item in li) { Console.WriteLine(item.ToString()+"\n"); } Console.ReadKey(); } }

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  • Floating point innacuracies

    - by Greg
    While writing a function which will perform some operation with each number in a range I ran into some problems with floating point inaccuracies. The problem can be seen in the code below: #include <iostream> using namespace std; int main() { double start = .99999, end = 1.00001, inc = .000001; int steps = (end - start) / inc; for(int i = 0; i <= steps; ++i) { cout << (start + (inc * i)) << endl; } } The problem is that the numbers the above program outputs look like this: 0.99999 0.999991 0.999992 0.999993 0.999994 0.999995 0.999996 0.999997 0.999998 0.999999 1 1 1 1 1 1.00001 1.00001 1.00001 1.00001 1.00001 1.00001 They only appear to be correct up to the first 1. What is the proper way to solve this problem?

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  • Format MySQL code inside PHP string

    - by JohnA
    Is there any program IDE or not that can format MySQL code inside PHP string e.g. I use PHPStorm IDE and it cannot do it. It does that for PHP and MYSQL but not for MYSQL inside php string. I am ready to use new IDE because now i have to manually format hundreds of database requests that are one line and not readable. Only criteria for my choice is that ide can do that automatically. <?php ... $request1 = "select * from tbl_admin where admin_id= {$_SESSION['admin_id']} and active= 1 order By admin_id Asc"; ... ?> should become <?php ... $request1 = "SELECT * FROM tbl_admin WHERE admin_id = {$_SESSION['admin_id']} AND active = 1 ORDER BY admin_id ASC"; ... ?>

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  • Running ARM assembly code in Android

    - by Robert Joseph Dacunto
    I've been following the guide posted here, trying to get this Hello, World program to run on my Samsung Galaxy S3. It's rooted already, and I successfully pushed the "hello" file onto the sdcard. Now when I enter the shell as the superuser (# instead of $), and try to run the file, I get "cannot execute - permission denied". I used chmod 755 hello to see if that would fix it, still nothing. Is there something I'm missing? This is my first time fiddling around with Android, just got the phone, and wanted to see if I could get this to work. Very new to it all. Thanks!

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  • How to get out information from a DataGridView?

    - by ghost_j1
    I am working on program that calculate the GPAs for university students in C#. I have made a gridview that contains columns for each subject. Its mark as letter and number. After the user "student" insert his/her subject I want to let the user click a button that will get the mark and the number of the credit hours of each subject. Calculate the GPA for the student and put the result in a textbox. I am having trouble getting started. Any advice for a good place to start?

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  • How do you expose a C++ class in the V8 Javascript Engine so it can be created using new?

    - by Steve Hanov
    The official examples of exposing a Point class seem to assume that there will be a fixed number of instances of it in your program. It is not clear how new instances are allocated in the C++ code, when new is called in Javascript. How would you expose a class that can have multiple instances? For example, an Image class: var img1 = new Image( 640, 480 ); var img2 = new Image( 1024, 768 ); img1.clear( "red" ); img2.clear( "black" );

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  • c: memory allocation (what's going on)

    - by facha
    Hi, everyone Please take a look at this piece of code. I'm allocating one byte for the first variable and another byte for the second one. However, it seems like the compiler allocates more (or I'm missing something). The program outputs both strings, even though their length is more the one byte. void main() { char* some1 = malloc(1); sprintf(some1,"cool"); char* some2 = malloc(1); sprintf(some2,"face"); printf("%s ",some1); printf("%s\n",some2); } Please, could anyone spot some light on what's going on when memory is being allocated.

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  • Debugging compiled .NET 2.0 application

    - by brovar
    I don't know if I'll pass all the necessary information here, but I've only been asked to post this question here and I'm not entirely onto the matter. There is a .NET Framework 2.0 application compiled in the Debug mode with the parameter jitDebugging set to true in app.config <system.windows.forms jitDebugging="true" /> After any crash we get the dialog box allowing us to send a report or to debug the program. When we choose to debug and select proper VS, the IDE starts but with the announcement: No symbols are loaded for any call stack frame. The source code cannot be displayed. and Disassembly cannot be displayed in run mode. Is there any possiblity to see the code or the spot where the crash has occured?

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  • Disposing a Bitmap through its Finalizer

    - by devoured elysium
    I have a complex program in which I have to first create, then use wrappers around bitmaps and send them across a lot of different classes. The problem in the end is deciding which classes should dispose the bitmaps. Most of the time the end classes don't know if they can indeed dispose the bitmap as the same bitmap can be used in several places. Also, I can't just copy the bitmaps because this is a kind of resource intensive algorithm and doing it would be dead slow. I looked up on reflector for Image/Bitmap's implementations and they seem to use the Dispose Pattern. So, even if I don't call Dispose(), the CLR will eventually call it some other time. Is it too bad if I just let the bitmaps be as they are, and let the finalizer take care of them?

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  • C++ string array from ifstream

    - by David Beck
    I have a program that I need to read in an array of strings from a file. The array must be C type strings (char * or char[]). Using the following code, I get a bad access error: for (i = 0; i < MAX_WORDS && !inputFile.eof(); i++) { inputFile >> words[i]; } words is declared as: char *words[MAX_WORDS];

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  • Passing object through WCF so that server receives client changes

    - by cvig
    I would like to set up a WCF service so that any changes a client makes to an object I send them are also reflected on the server side. For example, if Assembly A has the following... namespace AssemblyA { public class Person { public string FirstName { get; set; } public string LastName { get; set; } } [ServiceContract] public interface IServer { [OperationContract] Person GetPerson(); } } And Assembly B references Assembly A... using AssemblyA; namespace AssemblyB { class Program { static void Main(string[] args) { <snip> IServer server = factory.CreateChannel(); Person person = server.GetPerson(); person.FirstName = "Kilroy"; person.LastName = "WuzHere"; } } } What is the easiest/best way to make it so that the service's copy of the Person object also reflects the changes that the client makes? Is this even possible?

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  • Which is the future of web development: HTML5 or Silverlight(or other RIA framework)?

    - by Morgan Cheng
    My colleagues have a heated debate on what is the future of web development. One side is supporting HTML5 and the other is supporting Silverlight. There is no conclusion of the debate yet. In my humble opinion as a programmer, HTML5 will not improve programming productivity, while Silverlight will. In my understanding, programmers still need to program in JavaScript to take advantage of HTML5. For Silverlight, we can use C# which is static-type language. A lot of coding defects can be found in compilation time. For HTML5, different browsers might still have different behavior even though there is spec. For Silverlight, generally what works in IE will work the same way in other browsers. Just my thoughts. Any idea on how to choose future direction of web development?

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  • PHP to make vars and values part of array

    - by Chris
    I currently have this function to search and replace in a text file. // Input $ect = array('Visssa', 'Lisssa', 'her'); // Placeholders in the file $put = array('lname', 'fname', 'hisher'); // Replace the placeholders $oput = str_replace($put, $ct, 'tmpfile.txt'); This is not the full program but the idea is replace the values found in tmpfile.txt with the ones found in the $etc array. And it works flawlessly. But, what I need to do is get all passed vars (get/post) and then make the arrays so that the var is the value to replace and the value is the value to replace it with. So, if I sent the url http://xyz.com/?lname=tom&ogre=yes All instances of lname in the file would be replaces with tom and all instances of ogre would be replaced with yes. So somehow it just gets any/all variables passed in get/post and then the arrays showed above would cause the var to be replaced by the value in the file.

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  • how to represent negative number to array of integers ?

    - by stdnoit
    I must convert string of 1324312321 to array of integers in java this is fine. I could use integer parseint and string substring method but how do I repesent -12312312 to my original array of integer.. the fact that - is a char / string and convert to array of integer would alter the value ( even though I convert - to integer-equivalent , it would change the rest of 12312312) it must be an array of integers and how should I convert negative numbers and still keeep the same value somehow reminding me of two complements trick but i dont think i need to go down to binary level in my program.. any other trick for doing this? thanks!

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  • Best memory settings for eclipse 4.2 (STS 3.1) on Windows 7 64 bit?

    - by jorrebor
    I apoligize in advance if this question is indeed too subjective as SO warns me. My workstation has 8 gb of ram and runs windows 7 64 bit. I use the Spring tool Suite (3.1) but as soon as i am starting to open and modify the spring config (.xml) files, STS becomes incredibly slow. I already tried switching off "build automatically" and to increase memory settings but no luck. How should i change my .ini ? this is what i have set now: -vm C:/Program Files/Java/jdk1.7.0_07/bin/javaw.exe -startup plugins/org.eclipse.equinox.launcher_1.3.0.v20120522-1813.jar --launcher.library plugins/org.eclipse.equinox.launcher.win32.win32.x86_64_1.1.200.v20120522-1813 -product org.springsource.sts.ide --launcher.defaultAction openFile --launcher.XXMaxPermSize 4096M -vmargs -Dosgi.requiredJavaVersion=1.5 -Xms512m -Xmx2048m -XX:MaxPermSize=512m My collageu running the same project in IntelliJ, has no problems. Thank you!

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  • Flash: How to get a list to be processed synchronous instead of asynchronous?

    - by Quandary
    Question: In Flash I have the below function. Now the problem is SaveFurniture, SavePolygons and SaveComments all save to the same XML file. Now SaveFurniture sends JSON encoded data to a ashx handler, which saves it in the xml on the server. The problem is, because flash sends the data asynchronous, the polygons get sent to the polygonsave ashx handler, but before saving of the furniture has completed, thus access error, write process already in progress... // cSaveData.SaveData(); public static function SaveData():void { trace("cSaveData.SaveData"); //NotifyASPXofNewScale(cGlobals.nPlanScale); SaveFurniture(); SavePolygons(); SaveComments(); } What's the best way to process this list, ONE AFTER ANOTHER ? Making a callback in all of them does make the program flow structure very confusing...

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  • How Android 2.2 interacting with Flash 10.1 (how to use flash from my app)?

    - by zxcat
    Hi! I'm searched adobe and android developers sites, but can't find any details on this. Is it possible to use Flash as a part of my app? E.g. like a widget/GUI element? Or it's integrated in browser only and can't be simple accessible? I know, Adobe AIR apps are supported as standalone .apk. So it must be some API/SDK (from Google) to connect with Flash player. Is there any details, how to program it (more clear: launch swf from my app and interact with it)? Thank you!

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  • 3-clique counting in a graph

    - by Legend
    I am operating on a (not so) large graph having about 380K edges. I wrote a program to count the number of 3-cliques in the graph. A quick example: List of edges: A - B B - C C - A C - D List of cliques: A - B - C A 3-clique is nothing but a triangle in a graph. Currently, I am doing this using PHP+MySQL. As expected, it is not fast enough. Is there a way to do this in pure MySQL? (perhaps a way to insert all 3-cliques into a table?)

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  • Writing to a file in Unicode

    - by Lefteris
    I am having some problems writing to a file in unicode inside my c program. I am trying to write a unicode Japanese string to a file. When I go to check the file though it is empty. If I try a non-unicode string it works just fine. What am I doing wrong? setlocale(LC_CTYPE, ""); FILE* f; f = _wfopen(COMMON_FILE_PATH,L"w"); fwprintf(f,L"???"); fclose(f); Oh about my system: I am running Windows. And my IDE is Visual Studio 2008.

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