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  • C# Application Becomes Slow and Unresponsive as String in Multiline Textbox Grows

    - by Jim Fell
    Hello. I have a C# application in which a LOT of information is being added to a Textbox for display to the user. Upon processing of the data, almost immediately, the application becomes very slow and unresponsive. This is how I am currently attempting to handle this: var saLines = textBox1.Lines; var saNewLines = saLines.Skip(50); textBox1.Lines = saNewLines.ToArray(); This code is run from a timer every 100mS. Is there a better way to handle this? I am using Microsoft Visual C# 2008 Express Edition. Thanks.

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  • a java applet question

    - by Robert
    Hello there. I have a question on the java applet.I've created a java applet,which is a board game,that can have a 2*2 array with row number and column number both set to 9 by default. Now I want to extend my applet a bit,that the user can specify the size they want on the command-line,then the applet class will create an applet with correspoding size. I try to add a constructor in the applet class,but the Eclipse complains,I also tried another class,which will create an instance of this applet with size as an instance variable,but it is not working. Could anyone help me a little bit on where to put a main() method that can take care of user-specified board sized,then create an array in my applet class accordingly? Thanks a lot. Rob

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  • Modify strings in Rails?

    - by Daniel O'Connor
    Hey everyone, So I'm new to Rails (teaching myself as a senior project in high school), and I'm trying to figure out how to modify these strings. Let's say someone writes the following string in a form: "you know you are a geek when" How can I automatically change it to this: "You know you are a geek when..."? I need Rails to check the case of the first letter and check for the three dots then modify the string as necessary. I've looked here, but I can't find anything that would work. Thanks a lot!

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  • Which tutorial on Clojure is best?

    - by Steve Rowe
    I'm interested in learning Clojure. The Getting Started page on Clojure.net is pretty minimal. Is there a good language introduction or tutorial out there? Which would you recommend? Answer: I have watched the videos on youtube called Intro to Clojure. I don't recommend those. They are a little too brief and don't give a lot of background. The talks by Clojure creater Rich Hickey. I am finding the "for Java developers" version very useful.

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  • Is it possible to change a exe's icon without recompiling it?

    - by Microkernel
    Hi all, I have lot of executable that I have compiled (long time back) for many of which I don't have sourcecode now. But when I compiled them I didn't put any icons for them, so they all look like same dull, bald default icon. So my questions are, (1) is it possible for me to write a software that can change the resources section of the exe and change its looks? If so, can anyone plz point me to the location where its explained? (I am a beginner, I have no idea on the exe format and all) Also its fun to keep changing Icons without having the pain of recompiling everything just for the icon change... (2) This is raises a natural converse question, Is it similarly possible to zap out the icon used by some file and use it for some other file? (If so, plz point me to location where I can get some details. I am a C/C++ developers and I am looking for solution on Windows Platform... Regards, MicroKernel

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  • Integration Testing an Entire *Existing* Application (w/ automatic execution of test suite)

    - by Ev
    Hi there, I have just joined a team working on an existing Java web app. I have been tasked with creating an automated integration test suite that should run when developers commit to our continuous integration server (TeamCity), which automatically deploys to our staging server - so really the tests will be run against our staging web app server. I have read a lot of stuff about automated integration testing with frameworks like Watir, Selenium and RWebSpec. I have created tests in all of these and while I prefer Watir, I am open to anything. The thing that hasn't become clear to me is how to create an entire test suite for an application, and how to have that suite execute in it's entirety upon execution of some script. I can happily create individual tests of varying complexity, but there is a gap in my knowledge about how to tie everything together into something useful. Does anyone have any advice on how to create a full test suite and have it execute automatically? Thanks!

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  • LINQ to SQL repository - caching data

    - by creativeincode
    I have built my first MVC solution and used the repository pattern for retrieving/inserting/updating my database. I am now in the process of refactoring and I've noticed that a lot of (in fact all) the methods within my repository are hitting the database everytime. This seems overkill and what I'd ideally like is to do is 'cache' the main data object e.g. 'GetAllAdverts' from the database and to then query against this cached object for things like 'FindAdvert(id), AddAdvert(), DeleteAdvert() etc..' I'd also need to consider updating/deleting/adding records to this cache object and the database. What is the best apporoach for something like this? My knowledge of this type of things is minimal and really looking for advice/guidance/tutorial to point me in the right direction. Thanks in advance.

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  • Is it possible to call a user-space callback function from kernel space in Linux (ioctl)?

    - by Makis
    Is it possible to expand the ioctl interface in Linux so that the user-space application can send a pointer to a function to the kernel space driver? I'm in particular thinking of ways to handle the stream in user-controllable way but doing it in the kernel. Those operations could be attached to the kernel module but this would make development a lot easier as I wouldn't need to mess with the kernel during development. More specifically, this would be the process: Data is read by the driver to a buffer. Data is handled by these user-defined functions in place. Some more handling is done, possibly with some HW blocks. Data is used by a user-space application.

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  • Efficient way to create/unpack large bitfields in C?

    - by drhorrible
    I have one microcontroller sampling from a lot of ADC's, and sending the measurements over a radio at a very low bitrate, and bandwidth is becoming an issue. Right now, each ADC only give us 10 bits of data, and its being stored in a 16-bit integer. Is there an easy way to pack them in a deterministic way so that the first measurement is at bit 0, second at bit 10, third at bit 20, etc? To make matters worse, the microcontroller is little endian, and I have no control over the endianness of the computer on the other side.

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  • IDE support for Spring framework; Are they worth using?

    - by Zwei Steinen
    I'm using Intellij IDEA for IDE, and I like it a lot. However, it does not have any special "Spring support" (plug-ins/tools). My next project uses Spring (which I'm not very familiar with), and I'm wondering whether I should consider changing my IDE from early on; e.g. to SpringSource eclipse/Intellij IDEA Professional. Do you guys have any experience with these IDE-built-in Spring support? Is it worth using?

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  • two or more timer with different intervals with C#

    - by kaushal
    Hi guys, I have to a d.b entry in which the intervals are given, Suppose 1 timer tm_5 will check the entries after every 5 mins & the timer tm_10 will check the entries after every 10 mins, The problem is that it checks only the entries for tm_5 not for the tm_10. I am using C#.net 2005 & MS sql server 2005. Guys please me with full code beacuase I am new to this field.. Thnks a lot... Kaushal

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  • Why No NSAttributedString on the iPhone?

    - by Jasarien
    Hey guys, Does anyone know what made Apple leave out NSAttributedString when turning AppKit into UIKit? The reason I ask is that I would really like to use it in my iPhone app, and there appears to be no replacement or alternative than doing it myself... It is possible to have mixed font attributes on a string - it's just a hell of a lot of work to to achieve something similar that was possible with a few lines of code with NSAttributedString. Also, doing all this extra drawing code myself makes my table view cells really heavy, and really hurts performance. Anyone got any ideas? Any genius's working on an opensource alternative to NSAttributedString?

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  • Zend_Cache_Backend_Sqlite vs Zend_Cache_Backend_File

    - by Alekc
    Hi, Currently i'm using Zend_Cache_Backend_File for caching my project (especially responses from external web services). I was wandering if I could find some benefit in migrating the structure to Zend_Cache_Backend_Sqlite. Possible advantages are: File system is well-ordered (only 1 file in cache folder) Removing expired entries should be quicker (my assumption, since zend wouldn't need to scan internal-metadatas for expiring date of each cache) Possible disadvantages: Finding record to read (with files zend check if file exists based on filename and should be a bit quicker) in term of speed. I've tried to search a bit in internet but it seems that there are not a lot of discussion about the matter. What do you think about it? Thanks in advance.

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  • Naming convention for utility classes in Java

    - by Zarjay
    When writing utility classes in Java, what are some good guidelines to follow? Should packges be "util" or "utils"? Is it ClassUtil or ClassUtils? When is a class a "Helper" or a "Utility"? Utility or Utilities? Or do you use a mixture of them? The standard Java library uses both Utils and Utilities: javax.swing.Utilities javax.print.attribute.AttributeSetUtilities javax.swing.plaf.basic.BasicGraphicsUtils Apache uses a variety of Util and Utils, although mostly Utils: org.apache.commons.modeler.util.DomUtil org.apache.commons.modeler.util.IntrospectionUtils org.apache.commons.io.FileSystemUtils org.apache.lucene.wordnet.AnalyzerUtil org.apache.lucene.util.ArrayUtil org.apache.lucene.xmlparser.DOMUtils Spring uses a lot of Helper and Utils classes: org.springframework.web.util.UrlPathHelper org.springframework.core.ReflectiveVisitorHelper org.springframework.core.NestedExceptionUtils org.springframework.util.NumberUtils So, how do you name your utility classes?

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  • Should a given URI in a RESTful architecture always return the same response?

    - by keithjgrant
    This is kind of a follow-up question to this one. So is having a unique response for any given URI a core tenant of RESTful architecture? A lot of discussion here tends that direction, but I haven't seen it anywhere as a "hard and fast" rule. I understand the value of it (for caching, crawling, passing links, etc), but I also see things like the twitter API violate it (A request to http://api.twitter.com/1/statuses/friends_timeline.xml will vary based on the username given), and I understand there are times when it may be necessary--not to mention that a chronologically paged resource will also change as new elements are added. Should I strive for varied responses from the same URI to be eliminated altogether, or do I just accept that sometimes it isn't practical, and as long as I minimize its occurrence, I'll be in decent shape.

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  • Clearcase: findmerge usage.

    - by Keshav
    Hi, I have a branch B1 and another branch B2. I want all files/subfolders (recursively) inside a particular folder X (and not on entire VOB) on B1 to be merged onto B2. What exact findmerge command do I need to use? The below commands will work for entire vob or if I run them by getting into the directory in question, that will suffice for me? cleartool findmerge . -type dir -nc -fver .../dev/LATEST -merge cleartool findmerge . -nc -type file -fver .../dev/LATEST -print Thanks a lot in advance.

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  • Is there a way in PHP to check if a directory is a symlink?

    - by tixrus
    The title says it all. I have symlinks to certain directories because the directories' names have non English characters that I got fed up trying to get apache's rewrite rules to match. There's a bounty on that question http://stackoverflow.com/questions/2916194/trouble-with-utf-8-chars-apache2-rewrite-rulesif anyone wants to go for it, and from the looks of things a lot of people would like to see a general solution to this problem, but meanwhile I made a plain ascii symlink to each of these offending directories. Now the rewrite rules are back to just alpha and _ and - and my security concerns are less and it loads the resources I want. But I still need the actual target directory name for display purposes. I googled "PHP directory info, PHP symlink" but didn't find anything. I need to do something like this: if (is_symlink($myResDirName)) { $realDirName = follow_symlink($myResDirName); }

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  • How to align MDIChild on left?

    - by lyborko
    Hi, I am trying hard to align MDIChild form to the left of the parent MDIForm setting Align:=alLeft at design time. Aparently aligned MDIChild is higher than parents client area (I do not know why), thats why vertical scrollbar appears on parent form. The problem is, that I want this form create dynamicaly; putting vertical Splitter between these MDIchild forms, in order to size them by mouse. But when I create Splitter it aligns itself totaly on the left, as if MDIChild form was not aligned (alLeft) at all. I set MDIChild parameters to: Align:=alLeft; Windowstate:=wsNormal; Borderstyle:=bsSizable; Does anybody solved this problem before? thanx a lot P.S Delphi 7, Win XP

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  • custom URL scheme doesn't work! Navigon AppInteract

    - by rdesign
    Hey guys, It is really frustrating me. I used the doc provided by Navigon itself. Unfortunately it doesn't work as expected. Navigon launches, but stops at the main menu. All I do is this: NSString *myTestStr = [NSString stringWithFormat:@"navigon://App|Another place|FRA|75008|PARIS|rue de Turin|17|2.324621|48.881273"]; NSString *navigonStrEsc = [myTestStr stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; NSLog(@"navigonStr: %@", navigonStrEsc); [[UIApplication sharedApplication] openURL:[NSURL URLWithString:navigonStrEsc]]; Any ideas what is wrong with my way? thanks a lot!

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  • jQuery's blur() and selector problem

    - by matthewayinde
    I'm trying to create a new div each time a text field contained in the last div loses focus, but a new div is added only when the text field in the first div loses focus (instead of the last)... Please I need help urgently. Thanks a lot. Here's my code: $(function() { $(':text:last').blur(function() { $('<div class="line"><span>data: </span><input type="text"/></div>') .appendTo($('#lineStack')); }); }); HTML: <div id="lineStack"> <div class="line"> <span>data: </span><input type="text" /> </div> </div>

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  • Problem with Ruby script output being stored into a file

    - by nickf
    I have a Ruby script that outputs a heap of text. As an example: puts "line 1" puts "line 2" puts "line 3" # etc... (obviously, this isn't how my script works..) There's not a lot of data - perhaps about 8kb of character data in total. When I run the script on the command line, it works as expected: $ ./my-script.rb line 1 line 2 line 3 But, when I push it into a file, the output is truncated at exactly 4096 bytes: $ ./my-script.rb > output.txt What would cause it to stop at 4kb?

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  • Release build in MVS 2010 professional v/s express for C

    - by yCalleecharan
    Hi, recently I discovered that "executing" a C program as a release build instead of a debug build optimizes the code and makes it run much faster. This is accessed through project properties configuration manager menu. I would like to know if this feature is the same in the professional version and the express edition of MVS 2010 in terms of speed optimization. I have the express edition. Also, I would like to know if C programs run with the same speed as in both the professional and express editions. I understand that the professional edition has many "software" tools for the serious programmer. Thanks a lot..

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  • Managing Team Development on Shared Website

    - by stjowa
    I need to know the best way to manage team web-development on a shared server (hostgator). I have done some individual web development on a shared server in the past, and I have always setup SVN through SSH to have a pretty-nice development workflow (version control, quick-commits, work though eclipse/subclipse, etc). However, I also know that with that setup, I had to make some pretty-sophisticated post-commit hooks to export the repository to /public_html; and, therefore, making the repository code testable. This seems like a tedious and error-prone setup for an entire team. I would like to be able to: Easily test the latest code in the repository. Somewhat easily move the code in the repository to production. Use an IDE like eclipse/subclipse to easily work with the repository. With this in mind, does anyone know of a good version-control/repository setup for developing a website with a team of about 4-5 people? Thanks a lot.

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  • Is it bad programming style to have a single, maybe common, generic exception?

    - by m0s
    Hi, so in my program I have parts where I use try catch blocks like this try { DirectoryInfo dirInfo = new DirectoryInfo(someString); //I don't know if that directory exists //I don't know if that string is valid path string... it could be anything //Some operations here } catch(Exception iDontCareWhyItFailed) { //Didn't work? great... we will say: somethings wrong, try again/next one } Of course I probably could do checks to see if the string is valid path (regex), then I would check if directory exists, then I could catch various exceptions to see why my routine failed and give more info... But in my program it's not really necessary. Now I just really need to know if this is acceptable, and what would a pro say/think about that. Thanks a lot for attention.

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  • Evaluating a function at a particular value in parallel

    - by Gaurav Kalra
    Hi. The question may seem vague, but let me explain it. Suppose we have a function f(x,y,z ....) and we need to find its value at the point (x1,y1,z1 .....). The most trivial approach is to just replace (x,y,z ...) with (x1,y1,z1 .....). Now suppose that the function is taking a lot of time in evaluation and I want to parallelize the algorithm to evaluate it. Obviously it will depend on the nature of function, too. So my question is: what are the constraints that I have to look for while "thinking" to parallelize f(x,y,z...)? If possible, please share links to study.

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