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• memory leaks in Instruments

  - by jj

  I'm getting lots of leaks in my code, but none of the leaks point to any of my code (they are all UIKit methods). I'm running 3.0. Could someone tell me how I go about figuring out where these leaks are coming from?

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• removing comma from string array

  - by sarah

  Hi, I want to execute a query like select ID from "xyz_DB"."test" where user in ('a','b') so the corresponding code is like String s="("; for(String user:selUsers){ s+= " ' " + user + " ', "; } s+=")"; Select ID from test where userId in s; The following code is forming the value of s as ('a','b',) i want to remove the comma after the end of array how to do this ?

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• git recognizes directory as file

  - by dbarrera

  A recent issue has arised. I have my local copy of code at ~/code/ directory where I made a git init. Whenever I copied a folder with files within it, git recognized folders and files normally. But today I copied a folder and when I did a git status, git recognized hw2/ folder as a file. Additionally, I removed .git folder and reinitialized git and now every folder is recognized as file. Any ideas why this could be?

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• Must declare function prototype in C?

  - by Mohit Deshpande

  I am kind of new to C (I have prior Java, C#, and some C++ experience). In C, is it necessary to declare a function prototype or can the code compile without it? Is it good programming practice to do so? Or does it just depend on the compiler? (I am running Ubuntu 9.10 and using the GNU C Compiler, or gcc, under the Code::Blocks IDE)

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• How do I get this validationTextBox to focus?

  - by Anurag Chaudhury

  After performing an ajax request if the input in the form was wrong I am trying to get this validatationTextBox to be focussed on and display an indicator message showing the problem. The code is: dijit.byId("passwordField").focusNode.focus() The form element is as mentioned a validationTextBox. The matter that is confusing me even further is that before in dojo 1.5, this piece of code was simply dijit.byId("passwordField").focus() and this worked fine. How can I fix this?

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• How to open a PDF file?

  - by Alive

  I want to load a pdf file on the click of a button. In the OnClickButton() implementation I am writing the function which open the PDF file ShellExecute(0, "Open", "%s\\HELP\\RiverCADPro_User_Manual.pdf", NULL, NULL, SW_MAXIMIZE); The above code is not working.What else is to be needed so as to run the above code

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• compiling Boost linked libraries (Ubuntu)

  - by Adam Greenhall

  I installed Boost via sudo apt-get install libboost-all-dev on the most recent version of Ubuntu. Now I want to compile a project that uses the Boost.Serialization library, which needs to be linked. I've tried many variants of the following, without success: gcc -I /usr/lib code.cpp -o compiled /usr/lib/libboost_serialization.a and gcc -I /usr/lib code.cpp -o compiled -l libboost_serialization The error message is: error: ‘split_member’ is not a member of ‘boost::serialization ` What am I missing?

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• a string doesn't exist in the current context

  - by Strider007

  the following is a part of my code. string lsStatus; lsStatus = ((Tv10DBLookup)(Sender)).EditValue.ToString(); while im debuging the code, im getting the following: "lsStatus is not in the context" ! Knowing that (Tv10DBLookup)(Sender)).EditValue is returning the value "Closed" what does this mean ?

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• Does Ruby have a special stack for return value?

  - by prosseek

  The following Ruby code def a(b,c) b+c end is the same as follows with Python def a(b,c): return b+c It looks like that ruby has the special stack that stores the final evaluation result and returns the value when a function is called. If so, what's the name of the stack, and how can I get that stack? If not, how does the Ruby code work without returning something?

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• How to use #if directives in C#(3.0)

  - by Newbie

  I just found two piece of code #if CONSOLE // defined by the console version using ournamespace.FactoryInitializer; #endif and #if _NET_1_1 log4net.Config.DOMConfigurator.ConfigureAndWatch(new System.IO.FileInfo(s) ); #else log4net.Config.XmlConfigurator.ConfigureAndWatch(new System.IO.FileInfo(s) ); #endif Can any one please tell me with a running sample( please provide a simple one) what is the significance of those code snippets and when and how to use those? Thanks.

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• Finding Links on a Webpage with Java

  - by alan

  Using Java have the source code of a webpage stored in a string. I want to extract all the urls in the source code and output them. I am awful with regex and the like and have no idea how to even approach this. Any help would be greatly appreciated.

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• What is the purpose of a self executing function in javascript?

  - by Ej

  In javascript, when would you want to use this: (function(){ //Bunch of code... })(); over this: //Bunch of code...

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• How do you implement the Decorator pattern if you can't inherit from the class you want to decorate?

  - by Lennie

  Hi, This is more a design question... You can't do a decorate design pattern if: 1) The object is marked "sealed" meaning you can't extend from it. 2) or you want to override a method but its not virtual. What can you do then? Taken that you can't change the class source code if you don't have the source code (like a 3rd party library).

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• Is it a good practice to have trim in setter?

  - by zibi

  I'm doing a code review and I noticed such a code: @Entity @Table(name = "SOME_TABLE") public class SomeReportClass { @Column(name = "REPORT_NUMBER", length = 6, nullable = false) private String reportNumber; ..... public String getReportNumber() { return reportNumber; } public void setReportNumber(String reportNumber) { this.reportNumber = StringUtils.trimToNull(reportNumber); } } Every time I see trimming inside of a setter I feel that its not the clearest solution - what is the general practice with that issue?

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• Is `std::string(strerror(errno))` dangerous?

  - by StackedCrooked

  At some places in my code, I print debug messages like this: int ret = getLinkSpeed(device.getSysName(), linkSpeed); if (ret < 0) { logDebug("Failed to obtain port speed for this device. Error: " + std::string(strerror(errno))); } From the documentation it is not entirely clear if strerror will return 0 under certain conditions (which would cause my code to crash). Does anyone know if it's safe?

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• How do I check to see if a column is in an xsd?

  - by Timmy

  Is there a simple way to see if the xsd code generating C# code has a particular column? Or if you can reference a variable column? table.getColumn("column") instead of table.column?

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• Invalid Active Record Statement Rails 2.3.16

  - by Ranzit

  I am using rails 2.3.16 ruby 1.8.7 For the following line of code I ma getting error as follows: Code: ForeignScheduledItem.find(:all, :conditions => { :foreign_scheduled_item => { :scheduled_items => { :subscription_id => params[:subscription_id] } } }, :joins => :scheduled_item).each { |i| @subscriptions.push(Subscription.find_by_id(i.subscription_id)) } Error: ActiveRecord::StatementInvalid (ActiveRecord::StatementInvalid): Can u please help in this regard.

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• extend php with java/c++?

  - by fayer

  i only know php and i wonder if you can extend a php web application with c++ or java when needed? i dont want to convert my code with quercus, cause that is very error prone. is there another way to extend it? cause from what i have read python can extend it with c++ without converting the python code and use java with jython?

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• good practice for string.partition in python

  - by user1544915

  some case i write code like these: a,temp,b = s.partition('-') i just need to pick the first and 3rd element. temp would never be used. is there a better way to do this? the common case is ,a better way to pick separted element to make a new list? for example i want to make a new list use old list 0,1,3,7 element code would be this: newlist = [oldlist[0],oldlist[1],oldlist[3],oldlist[7]] it's pretty ugly,isn't it?

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• Load HTML NSString into a UIWebView

  - by ehenrik

  Im doing a project where I connect to a webpage using the NSURLConnection to be able to monitor the status codes that are returned (200 OK / 404 ERROR). I would like to send the user to the top url www.domain.com if I recieve 404 as status code and if i recieve as 200 status code I would like to load the page in to a webview. I have seen several implementations of this problem by creating a new request but I feel that it is unnecessary since you already received the html in the first request so i would just like to load that HTML in to the webView. So i try to use the [webView loadHTMLFromString: baseURL:] but it doesn't always work, I have noticed that when i print the NSString with html in the connectionDidFinnishLoading it sometimes is null and when I monitor these cases by printing the html in didReceiveData a random number of the last packets is NULL (differs between 2-10). It is always the same webpages that doesn't get loaded. If I load them to my webView using [webView loadRequest:myRequest] it always works. My implementation looks like this perhaps someone of you can see what Im doing wrong. I create my first request with a button click. -(IBAction)buttonClick:(id)sender { NSURL *url = [NSURL URLWithString:@"http://www.domain.com/page2/apa.html"]; NSURLRequest *theRequest = [NSURLRequest requestWithURL:url] NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self]; if( theConnection ) { webData = [[NSMutableData data] retain]; } else { } } Then I monitor the response code in the didReceiveResponse method by casting the request to a NSHTTPURLResponse to be able to access the status codes and then setting a Bool depending on the status code. -(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response { NSHTTPURLResponse *ne = (NSHTTPURLResponse *)response; if ([ne statusCode] == 200){ ok = TRUE; } [webData setLength: 0]; } I then check the bools value in connectionDidFinnishLoading. If I log the html NSString I get the source of the webpage so i know that it isn't an empty string. -(void)connectionDidFinishLoading:(NSURLConnection *)connection { NSString *html = [[NSString alloc] initWithBytes: [webData mutableBytes] length:[webData length] encoding:NSUTF8StringEncoding]; NSURL *url = [NSURL URLWithString:@"http://www.domain.com/"]; if (ok){ [webView loadHTMLString:html baseURL:url]; ok = FALSE; } else{ //Create a new request to www.domain.com } } webData is an instance variable and I load it in didReceiveData like this. -(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { [webData appendData:data]; }

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• Data type changing in Excel file Through c# Program

  - by Anilkumar

  I am generating an excel file through C# code. the cell Data type I'm giving as "" . Once I give Number instead of String The generated Excel could not open. How can I change the Datatype of the cell which I generated through the Code? Thanks in Advance.

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• How to start an Intent by passing some parameters to it?

  - by Pentium10

  I would like to pass some variables in the constructor of my ListActivity I start activity via this code: startActivity(new Intent (this, viewContacts.class)); I would like to use similar code, but to pass two strings to the constructor. How is possible?

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• What makes C faster than Python?

  - by Chris

  I know this is probably a very obvious answer and that I'm exposing myself to less-than-helpful snarky comments, but I don't know the answer so here goes. If Python compiles to bytecode at runtime, is it just that initial compiling step that takes longer? If that's the case wouldn't that just be a small upfront cost in the code (ie if the code is running over a long period of time, do the differences between C and python diminish?)

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• Set parameter to super view after dismissModalViewControllerAnimated

  - by user536926

  Hi, I have 2 view (view A and view B). In viewA when I touch a button I execute this code to flip a viewB: viewB.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal; [self presentModalViewController:viewB animated:YES]; And now when I came back to viewA I use this code: [self dismissModalViewControllerAnimated: YES]; //here is my problem I need to set same parameters to viewA when I execute dismiss. How can I do it?

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• How to detect whether an HTML page contains a video?

  - by userlite

  I would like to know whether it a possible to detect whether a HTML page contains a video. I know that one possible way is to look for ".swf" in the HTML source code. But most of the pages do not contain the file name. For example, given following URL and possibly its source code, is it possible to find out whether it contains a video: http://www.cnn.com/video/

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