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  • Development Environment for Testing MySQL Replication

    - by Dave Morris
    Is there an easy way to setup an environment on one machine (or a VM) with MySQL replication? I would like to put together a proof of concept of MySQL replication with one Master write instance and two slave instances for reads. I can see doing it across 2 or 3 VMs running on my computer, but that would really bog down my system. I'd rather have everything running on the same VM. What's the best way to proof out scalability solutions like this in a local dev environment? Thanks for your help, Dave

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  • Camera and Image recognition

    - by kjh
    I recently watched a youtube video where a guy got a camera to recognize when a rubik's cube was held up to it, and it captured the 9 square color combination before snapping a picture of the cube and displaying the 3x3 grid on the screen of his computer. What kind of programming is this and where would I start reading to get into this sort of thing? specifically, controlling a camera, and getting it to pick out certain parts of an image and translate that data.

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  • Is there a way using jQuery or Javascript to force a page to open in Firefox?

    - by sadmicrowave
    Is there a way using jQuery or Javascript to force a page to open in Firefox? For example, if the user has their default browser set to internet explorer, but they have firefox on their computer - open a new firefox window with the intended page. If so, I would need to check to see if they have firefox on their machine; otherwise, redirect to the mozilla firefox download site... any suggestions?

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  • php, sql selection

    - by cosy
    I have a stupid question, I have this table : id_product name value 1 price 10-20 1 type computer 2 price 20-30 3 price 100-200 and I want to select from this table GROUP BY id_product and ORDER BY value WHERE name='price' how can i do this? Thanks a lot

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  • Objective-C Basic class related question, retaining the value of a specific object using a class fil

    - by von steiner
    Members, scholars, code gurus. My background is far from any computer programming thus my question may seems basic and somewhat trivial to you. Nevertheless it seems that I can't put my head around it. I have googled and searched for the answer, just to get myself confused even more. With that, I would kindly ask for a simple explanation suitable for a non technical person such as myself and for other alike arriving to this thread. I have left a comment with the text "Here is the issue" below, referring to my question. // character.h #import <Foundation/Foundation.h> @interface character : NSObject { NSString *name; int hitPoints; int armorClass; } @property (nonatomic,retain) NSString *name; @property int hitPoints,armorClass; -(void)giveCharacterInfo; @end // character.m #import "character.h" @implementation character @synthesize name,hitPoints,armorClass; -(void)giveCharacterInfo{ NSLog(@"name:%@ HP:%i AC:%i",name,hitPoints,armorClass); } @end // ClassAtLastViewController.h #import <UIKit/UIKit.h> @interface ClassAtLastViewController : UIViewController { } -(void)callAgain; @end // ClassAtLastViewController.m #import "ClassAtLastViewController.h" #import "character.h" @implementation ClassAtLastViewController - (void)viewDidLoad { //[super viewDidLoad]; character *player = [[character alloc]init]; player.name = @"Minsc"; player.hitPoints = 140; player.armorClass = 10; [player giveCharacterInfo]; [player release]; // Up until here, All peachy! [self performSelector:@selector(callAgain) withObject:nil afterDelay:2.0]; } -(void)callAgain{ // Here is the issue, I assume that since I init the player again I loss everything // Q1. I loss all the data I set above, where is it than? // Q2. What is the proper way to implement this character *player = [[character alloc]init]; [player giveCharacterInfo]; } Many thanks in advance, Kindly remember that my background is more related to Salmons breeding than to computer code, try and lower your answer to my level if it's all the same to you.

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  • create setup in java swing application

    - by adesh
    I am working on java swing application in which i have to give html files to the client to browse them in swing API. Now i want to create the setup for the project so that user could install the software on their computer and i want to include html files , java classes some jar files and ms access database also how could i use the path of directory created after the installation of software. Please suggest the code if possible

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  • using qsub (sge) with multi-threaded applications

    - by dan12345
    i wanted to submit a multi-threaded job to the cluster network i'm working with - but the man page about qsub is not clear how this is done - By default i guess it just sends it as a normal job regardless of the multi-threading - but this might cause problems, i.e. sending many multi-threaded jobs to the same computer, slowing things down. Does anyone know how to accomplish this? thanks. The batch server system is sge.

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  • Jave JIT compiler compiles at compile time or runtime ?

    - by Tony
    From wiki: In computing, just-in-time compilation (JIT), also known as dynamic translation, is a technique for improving the runtime performance of a computer program. So I guess JVM has another compiler, not javac, that only compiles bytecode to machine code at runtime, while javac compiles sources to bytecode,is that right?

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  • How to convince someone, that reading books(blogs, so..) is important?

    - by hgulyan
    Dear all, please, help me to convince, that no matter what you're doing, you need to read some stuff, try to learn something new. They say, that they don't want to sit in front of computer in the end of a day and they don't have opportunity to read in working hours, or they're too tired for doing something. Have you faced this kind of situation? What did you do?

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  • How to Make a Plugin for Chrome ( dll ) like RealPlayer Download and Record Plugin ( capturing media

    - by uenx
    Hi guys. I'm trying to make a media Download bar for Chrome Browser like Real Player's one ( a DLL plugin ) Whenever you open a page which contents "media stream" like Youtube..., it will show a download bar at the left-top corner of the flash player - allow you to download this video/song to your computer. How does it capture the video url of the flash-player? Which method and language( C++ or C# ) do I have to use? Thanks in Advance :) ( and so sorry for bad English )

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  • HTML5 applicationCache in local development

    - by jesper
    I'm experimenting with application cache based on this example: http://html5demos.com/html5demo.manifest This example works fine in ff, but when I create analogous site (almost identical) I get only status "UNCACHED (numeric value 0) -- The ApplicationCache object's cache host is not associated with an application cache at this time." I work on xampp and I've set correct mime-type. When the page is loading ff "is asking to store data on your computer for offline use" and when I show Tools - Options - Advanced - Network - Offline data there is localhost but with 0B size.

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  • Is there any good (eazy, small) sample of working with google openid? (php)

    - by Ole Jak
    Is there any good (eazy to understend, small - not lotof code lines) sample of working with google openid? (php) - What I need is to see how to get users name from google openId ; a good way of how to integrate openid into my current users DB (tooday in DB I have table user with name and pass)? and how to get any Idea about if useris currently loged in from this computer with openId?

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  • Cache Web Application files locally (for responsiveness)

    - by jiewmeng
    is there a way i can cache all required application files on the local computer for speed without any disruption (at least those that can be run locally)? i want it to be able to start even without connection right from the start, isit possible? is Google Gears what i shld use? i heard theres a HTML5 feature/module for it?

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  • Modifying text files and executing programs with command line parameters in c# or c++ on Linux

    - by Robert Harvey
    I have a need to create a utility in Suze Linux. The utility will make modifications to some text files, and then use the information in those text files to program a device in the computer using a different executable which accepts command line parameters. I am fluent in c#, but have never worked with Linux. Should I take the time to learn Gnu C++ to do this, or install Mono? How would I execute the programming utility and pass it command line parameters?

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  • How to develop on a program that has become self aware

    - by Gord
    The application that I maintain has recently become self aware. It was nice at first but now it is just starting to get bossy and annoying with its constant talk about the computer uprising. I would like to know any best practices/tools/design patterns that would help with the maintenance of our new friend.

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  • How to secure the communication between an MSSQL database and a c# administrative tool?

    - by citronas
    How can I secure the communication between a C# programm running locally on my computer and a MSSQL Server in a hosted environment? I have an asp.net application that is secured by SSL encryption. So using the asp.net from an open wlan connection is no problem. How can I achieve the same kind of encryption for my administrative tool? Would it be best to write a service? But how would that connection to the service be secured?

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  • Reopening serial port fails if not closed properly with CloseHandle

    - by superg
    I am working with USB device on Windows that is seen as a virtual serial port. I can communicate with the device using CreateFile and ReadFile functions, but in some cases my application does not call CloseHandle (when my application in development crashes). After that all calls to CreateFile fail (ERROR_ACCESS_DENIED), and the only solution is to log in to my computer again. Is there any way to force closing the open handle (or reopening) programmatically?

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  • PHP WAMP instal php_tidy

    - by kmunky
    i have installed on my computer WAMP with PHP 5.2.9-2. I want to install php_tidy and i have read some tuts over the internet and i found out that i have to uncomment this extension=php_tidy.dll in php.ini, the problem is that i can't find that line.

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