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• visual studio C++ toggle comment ? comment while not whole line is selected ?

  - by Mr_and_Mrs_D

  2 questions actually : 1) shortcut to toggle comment on selected lines ? Available on all iDEs I used starting with notepad++ 2)the ctrl-k, ctrl-c exhibits this behavior (quoted from someplace nicely worded): C#: Each line where some text is selected is commented at the line-start with double-slash. If nothing is selected, the line where the cursor is is commented. C++: If nothing is selected or complete lines are selected, it behaves as above. However, if parts of a line are selected, and no comment is selected as part of the selection (ex. select something in the middle of a code line), then the selection is surrounded by /* and */. since I code in C++ I find this behavior annoying - I want to be able to comment out lines partially selected - any workarounds ?

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• Error " Index exceeds Matrix dimensions"

  - by Mola

  Hi experts, I am trying to read an excel 2003 file which consist of 62 columns and 2000 rows and then draw 2d dendrogram from 2000 pattern of 2 categories of a data as my plot in matlab. When i run the script, it gives me the above error. I don't know why. Anybody has any idea why i have the above error? My data is here: http://rapidshare.com/files/383549074/data.xls Please delete the 2001 column if you want to use the data for testing. and my code is here: % Script file: cluster_2d_data.m d=2000; n1=22; n2=40; N=62 Data=xlsread('data.xls','A1:BJ2000'); X=Data'; R=1:2000; C=1:2; clustergram(X,'Pdist','euclidean','Linkage','complete','Dimension',2,... 'ROWLABELS',R,'COLUMNLABELS',C,'Dendrogram',{'color',5})

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• Determining where a function is defined in C#?

  - by templatetypedef

  Hey all - I am a complete novice at C# (I've never used it before) and recently needed to look over some code written in it. I spent the longest time trying to track down a nonexistent method in a class that didn't seem to be defined anywhere in the class that was using it. I later found out it was an "extension method," which I gather is a method grafted onto another class by some source. I completely understand the rationale behind this language feature and actually think it's quite nice. However, as someone without much experience in the language, it makes it harder to look up unfamiliar methods, since the method in question could be defined anywhere. My question is this: given an unfamiliar method call in C#, what's the best way for me to look up more info on it, given that it could be an extension method defined in an entirely separate class? Thanks!

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• TFS for version maintainance

  - by GreenEggsAndHam

  I am part of a team that releases versions of our software 4-5 times each year to our customers. We maintain the previous 2-3 versions of our product by correcting any errors that we come across in later versions. We are using TFS 2008 for source control and are trying to find the best way of maintaining the older versions. We currently create a branch of our application each time we do a new version, but we are looking for a good way to update old versions more easily. For example, we complete 9.5 but two weeks after we created the branch and are working on 10.0, we realize that 9.5 has an error. We currently make the change in version 10.0 and then open 9.5 to make the change again. Is there anyway of automating this? Thanks!

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• Reading another packages symbol table in Perl

  - by justintime

  I am trying to read a global symbol from another package. I have the package name as a string. I am using qualify_to_ref from Symbol module my $ref = qualify_to_ref ( 'myarray', 'Mypackage' ) ; my @array = @$ref ; gives me Not an ARRAY reference at ...... I presume I am getting the format of the dereference wrong. Here is a complete example program. use strict; use Symbol ; package Mypackage ; our @myarray = qw/a b/ ; package main ; my $ref = qualify_to_ref ( 'myarray', 'Mypackage' ) ; my @array = @$ref ;

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• cakephp droplist/form - xml and ajax

  - by gudinne

  Hello- I'm complete noob in Cakephp - here goes... I have a website set up with Cakephp framework. I have been tasked with creating two dropdown forms to compare/show data. When the user selects an item from the dropdown from either one of the forms it is to show the content below on website. I was thinking this data would need to be stored in an xml file. How do I create and sync two dropdown forms with xml data within Cakephp? The page the form is on is the view(.ctp) file. Thanks

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• C++ new line not translating

  - by m3n

  First off, I'm a complete beginner at C++. I'm coding something using an API, and would like to pass text containing new lines to it, and have it print out the new lines at the other end. If I hardcode whatever I want it to print out, like so printInApp("Hello\nWorld"); it does come out as separate lines in the other end, but if I retrieve the text from the app using a method that returns a const char then pass it straight to printInApp (which takes const char as argument), it comes out as a single line. Why's this and how would I go about to fix it?

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• .NET CF 2.0: Stream implements IDisposable ... kind of?

  - by mvanbem

  I've run into something odd in a .NET CF 2.0 project for Pocket PC 2003 (Visual Studio 2005). I was dealing with a System.IO.Stream object and found that the IDE wouldn't auto-complete the Dispose() method. I typed it in manually and received: 'System.IO.Stream.Dispose(bool)' is inaccessible due to its protection level The error is referring to the protected Dispose(bool) method. Dispose() is either private or not present. Question 1: How is this possible? Stream implements IDisposable: public abstract class Stream : MarshalByRefObject, IDisposable ... and IDisposable requires a Dispose() method: public interface IDisposable { void Dispose(); } I know the compiler won't let me get away with that in my code. Question 2: Will I cause problems by working around and disposing my streams directly? IDisposable idisp = someStream; idisp.Dispose(); The implicit cast is accepted by the compiler.

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• Java Scanner - next String until a | is found

  - by user1375883

  Currently I'm trying to read through some basic cells, in this format: +-------+-------+ | | | +-------+-------+ Now I need to get the string representation of the cell's contents and send it off to another method. The problem is that the cells have no pre-defined length. I'm reading these from a file, so my easiest option should be to just use the Scanner I already have set up. Problem is, I don't really know how for this case. I have a strong feeling that I need to use the pattern somehow, but I'm at a complete loss on how to do it. I could also probably just build it up somehow, but that strikes me as being painfully slow.

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• Approaches to a week long camp programming course (tips & projects)

  - by Good Person

  I will be teaching a week long programming course to kids between the ages of 11-18. Most of the kids have no programming experience. I'm looking for two things 1) General tips for teaching a camp class (how to make it fun when explaining the difference between int and float) 2) Interesting projects that the kids will be able to complete by the end of the week. Unfortunately the language I'll be required to use is either c++ or Java which means that I'll need to spend more time on itty bitty details than I'd like in a week long course. I feel more competent in c++ than in Java. However if someone can show me that Java is much easier to learn I'll probably teach that instead. My initial idea is to try something like "a game a day" with games like hangman, tic-tac-toe, guess-a-number, wheel-of-fortune, etc. I'll try and update the question text as answers come in to offer more details While there are other questions about teaching programming around I'm looking for advice and tasks that are useful for specifically a week long camp

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• python-wordmatching

  - by challarao

  Write two functions, called countSubStringMatch and countSubStringMatchRecursive that take two arguments, a key string and a target string. These functions iteratively and recursively count the number of instances of the key in the target string. You should complete definitions for def countSubStringMatch(target,key): and def countSubStringMatchRecursive (target, key): For the remaining problems, we are going to explore other substring matching ideas. These problems can be solved with either an iterative function or a recursive one. You are welcome to use either approach, though you may find iterative approaches more intuitive in these cases of matching linear structures.

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• how to convert legacy query to ActiveRecord Rails way

  - by josh

  I have a query in my code as below @sqladdpayment = "INSERT INTO payments (orderid, ttlprodcost, paytype, paystatus,created_at,updated_at,userid,storeid) VALUES ('" + session[:ordersid] + "', '" + session[:totalcost] + "', '" + "1"+ "', '" + "complete" +"',current_date, current_date, '"+"1"+"','"+ "1"+"')" Here the table payments and primary key is orderid. Now, I know if I convert this to the ActiveRecord way then I will not have to put update_date, current_date because it will put that on it's own. It will also put orderid on it's own also (auto_increment). I am looking for a way to convert the above query to ActiveRecord Rails way but still be able to put orderid on my own (session[:ordersid]). I do not want to rely on auto_increment because then I will have to refactor lot of the other code. This might be a quick and dirty fix but I want to know whether this type of flexibility is offered in rails? I have wondered about this question many times. Why won't rails allow me to have that flexibility?

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• Building a financial app with Django

  - by mfalcon

  Hi guys, I'm building an app for a small business so I've to work with currencies, decimal numbers, etc... My goal is to create something like pulseapp.com. I've searched for opensource projects to look and the only thing I had found was django-cashflow. This app uses python-money. I've read some of the code and the ways it's coded seems a bit weird to me and it's not fully complete. Is the app worth to take a deep look? Does anyone know about another similar app? Is the task difficult or a begginer like me could find a way to code it himself?

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• Sending data between activities within my app?

  - by user246114

  Hi, I have a TabActivity, and the tabs point to sub activities. Is there a way I can send a 'message' to those child activities? I just want to pass a string across, not sure if this is possible. I have some data being fetched by the parent TabActivity, and the child tabs can't do anything useful until the parent is done fetching. When fetching is complete, I'd like to pass that data to the child activities so they can do something useful with it. Notmally I'd set the data to be passed in the Intent when first creating the activity, but in this case I can't do that. Thanks

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• Running interrelated methods continously using java

  - by snehalata

  I have written application which downloads data from a website every 10 mins and writes to a file.Then these files are merged into one file and then R program is run on this merged file to perform sentiment analysis and result is stored in hbase. I want the process of merging files,running R and then storing to HBase to run continuosly on the downloaded data. For running R,we are running R script from java program.We have used Runtime.getRuntime().exec() method to run R program but it doesn't wait for R program to complete and method in the next line starts executing.Using p.waitFor() did not help . What approach should I use to do merge then run R and finally store results in Hbase?Should I use timer class??

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• android question about service and the method onstartcommand

  - by user516883

  In a service class there is a method to start the service. If that service gets done executing does it runs onstartcommand from the beginning? Is onstartcommand sorta like a loop as long as the service is running. For example i have onstartcommand { int x = 0; if(x == 0){ } else{ } } After that is complete does it run it again. If you know that answer please explain. I have read google explanation of services and it did not explain that part very well. Is onstartcommand sorta like a loop as long as the service is runnning

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• PHP: Redirect to the same page, changing $_GET.

  - by Jonathan

  Hi, I have this PHP piece of code that gets $_GET['id'] (a number) and do some stuff with this. When its finished I need to increase that number ($_GET['id']) and redirect to the same page but with the new number (also using $_GET['id']). I am doing something like this: $ID = $_GET['id']; // Some stuff here // and then: $newID = $ID++; header('Location: http://localhost/something/something.php?id='.$newID); exit; The problem here is that the browser stop me from doing it and I get this error from the browser (Firefox) : "The page isn't redirecting properly. Firefox has detected that the server is redirecting the request for this address in a way that will never complete." Some help here please!

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• Rspec > testing database views

  - by Sean McCleary

  How can database views be tested in Rspec? Every scenario is wrapped in a transaction and the data does not look like it is being persisted to the database (MySQL in my case). My view returns with an empty result set because none of the records are being persisted in the transaction. I am validating that the records are not being stored by setting a debug point in my spec and checking my data with a database client while the spec is being debugged. The only way I can think to have my view work would be if I could commit the transaction before the end of the scenario and then clear the database after the scenario is complete. Does anyone know how to accomplish this or is there a better way? Thanks

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• Handling dynamic number of columns

  - by Whistle

  I'm developing a CMS of sorts, and I want to give my users the possibility of customizing the display. More precisely, I want to give them the ability to choose to display or hide the left column, the right column and/or the top div. The middle column cannot be hidden since this is where the actual content will show, whereas the other columns are for navigation or side menus. I've been looking for a way to make this as smart and flexible as possible. For now I'm using a MasterPage, but that seems to be too constraining. For instance, with MasterPage you need to add a ContentPlaceHolder control in every of your ASPX pages. What are the best practices in this area? I guess a simpler way of saying this would be "I want to create a template system over which I have complete control".

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• Calling finish() After Starting a New Activity

  - by stormin986

  The first Activity that loads in my application is an initialization activity, and once complete it loads a new Activity. I want to ensure if the user presses 'Back' they go straight to the Launcher, and not the initialization screen. Side note, is this even the best approach, or would this be better done with some kind of Intent Flag? Is it correct to call finish() after calling startActivity() on the new activity? onCreate() { ... startActivity(new Intent(this, NextActivity.class)); finish(); ... } I'm still taking in the whole 'Message Queue' method of doing things in Android, and my assumption is that calling startActivity() and then finish() from my first Activity's onCreate() will log each respective message in the message queue, but finish execution of onCreate() before moving on to starting the next Activity and finishing my first one. Is this a correct understanding?

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• Using libraries with different licenses (CPOL + LGPL)

  - by jaens

  I'm developing a program that will be published on my university's website. In this program I use two libraries, one under the LGPL and one under the CPOL (link text). I plan on releasing the complete source code, libraries included (without modification). Do those licenses clash? What do I have to do to "fix" it? Do I have to do anything in particular (put text in source code files, put references in documentation...)? Thanks in advance.

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• Subversion repo upgrade makes repository unusable.

  - by Mike C.

  Hi, I recently upgraded my subversion server from 1.4.6 to 1.6.11. The repos all seem to work correctly after this. I then try to upgrade a repo by issuing the svnadmin update command, and it produces no errors and says the update is complete. However, I am unable to open the repository after this. I get the following error when trying to open the repo: Could not open the requested SVN filesystem. I am using Apache, not SVNServe. Any help would be appreciated!

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• How can I modify command line in Ubuntu 10.04?

  - by user482594

  I am using a vpn service from certain server. I was given with a root account, and when I connect with a root account, the command line looks like below. root@xa9g82:/etc/# Then I used useradd to add an account called 'temp' When I connected to the server with temp, then the command line only has a single character. $ The user information is not shown, neither the path. Also, note that, in root's command line I can use tab to automatically complete the filename, however 'temp's command line inserts tab space, when I press tab. It is very inconvenient. I am using Ubuntu 10.04. How can I resolve this issue?

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• How to schedule hundreds of thousands of tasks?

  - by wehriam

  We have hundreds of thousands of tasks that need to be run at a variety of arbitrary intervals, some every hour, some every day, and so on. The tasks are resource intensive and need to be distributed across many machines. Right now tasks are stored in a database with an "execute at this time" timestamp. To find tasks that need to be executed, we query the database for jobs that are due to be executed, then update the timestamps when the task is complete. Naturally this leads to a substantial write load on the database. As far as I can tell, we are looking for something to release tasks into a queue at a set interval. (Workers could then request tasks from that queue.) What is the best way to schedule recurring tasks at scale? For what it's worth we're largely using Python, although we have no problems using components (RabbitMQ?) written in other languages.

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• NHibernate - Is ITransaction.Commit really necessary?

  - by user365383

  Hi I've just start studying NHibernate 2 days ago, and i'm looking for a CRUD method that i've writed based on an tutorial. My insert method is: using (ISession session = Contexto.OpenSession()) using (ITransaction transaction = session.BeginTransaction()) { session.Save(noticia); transaction.Commit(); session.Close(); } The complete code of "Contexto" is here: http://codepaste.net/mrnoo5 My question is: Do i really need to use ITransaction transaction = session.BeginTransaction() and transaction.Commit();? I'm asking this because i've tested run the web app without those two lines, and i've sucefully inserted new records. If possible, can someone explain me too the porpuse of Itransaction and the method Commit? Thanks

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