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  • Determining if two lines intersect

    - by Faken
    I have two lines that extend to infinity but both have a starting point. They are both described by a starting point and a vector in the direction of the line extending to infinity. I want to find out if the two lines intersect but i don't need to know where they intersect (its part of a collision detection algorithm). Everything i have looked at so far describes finding the intersection point of two lines or line segments. Anyone know a fast algorithm to solve this?

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  • Three20 - SIGABRT on setting TTTableLongTextItem to TTStyledText

    - by gavinblair
    My code is as follows TTTableLongTextItem *descItem = [[TTTableLongTextItem alloc] autorelease]; TTStyledText *styledDesc = [[TTStyledText alloc] autorelease]; styledDesc = [TTStyledText textWithURLs:@"howdy http://www.google.com"]; //this line causes the SIGABRT: descItem.text = styledDesc; //I also get a warning on this line that says "warning: passing argument 1 of 'setText:' from distinct Objective-C type" What am I missing here? Any help is muchly appreciated - Three20 documentation is a little sparse!

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  • grep pipe with sed

    - by 123Ex
    hi, This is my bash command grep -rl "System.out.print" Project1/ | xargs -I{} grep -H -n "System.out.print" {} | cut -f-2 -d: | sed "s/\(.*\):\(.*\)/filename is \1 and line number is \2/ What I'm trying to do here is,I'm trying to iterate through sub folders and check what files contains "System.out.print" (using grep) using 2nd grep trying to get file names and line numbers using sed command I display those to console. from here I want to remove "System.out.print" with "XXXXX" how I can pipe sed command to this? pls help me thanxx

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  • Displaying individual elements of an object in an Arraylist through a for loop?

    - by user1180888
    I'm trying to Display individual elements of an Object I have created. It is a simple Java program that allows users to add and keep track of Player Details. I'm just stumped when it comes to displaying the details after they have been added already. here is what my code looks like I can create the object and input it into the arraylist no problem using the case 2, but when I try to print it out I want to do something like System.out.println("Player Name" + myPlayersArrayList.PlayerName + "Player Position" + myPlayerArrayList.PlayerPosition + "Player Age" + "Player Age"); I know that is not correct, but I dont really know what to do, if anyone can be of any help it would be greatly appreciated. Thanks System.out.println("Welcome to the Football Player database"); System.out.print(System.getProperty("line.separator")); UserInput myFirstUserInput = new UserInput(); int selection; ArrayList<Player> myPlayersArrayList = new ArrayList<Player>(); while (true) { System.out.println("1. View The Players"); System.out.println("2. Add A Player"); System.out.println("3. Edit A Player"); System.out.println("4. Delete A Player"); System.out.println("5. Exit ") ; System.out.print(System.getProperty("line.separator")); selection = myFirstUserInput.getInt("Please select an option"); System.out.print(System.getProperty("line.separator")); switch(selection){ case 1: if (myPlayersArrayList.isEmpty()) { System.out.println("No Players Have Been Entered Yet"); System.out.print(System.getProperty("line.separator")); break;} else {for(int i = 0; i < myPlayersArrayList.size(); i++){ System.out.println(myPlayersArrayList); } break; case 2: { String playerName,playerPos; int playerAge; playerName = (myFirstUserInput.getString("Enter Player name")); playerPos = (myFirstUserInput.getString("Enter Player Position")); playerAge = (myFirstUserInput.getInt("Enter Player Age")); myPlayersArrayList.add(new Player(playerName, playerPos, playerAge)); ; break; }

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  • Restoring and passing data to an already running instance of a .NET application

    - by mtranda
    The goal is to have an application that runs in the system tray and can either accept user input from its actual GUI (which isn't the actual issue) OR accept command line parameters (that would actually be done via a context menu in windows explorer). Now, while I'm aware that the command line parameters are not exactly possible once the application has started, I need a way to pass data to the already running application instance via some form of handler. I'm thinking maybe define and raise some sort of event? Thanks in advance.

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  • find all text before using regex

    - by jeff
    How can I use regex to find all text before the text "All text before this line will be included"? I have includes some sample text below for example This can include deleting, updating, or adding records to your database, which would then be reflex. All text before this line will be included You can make this a bit more sophisticated by encrypting the random number and then verifying that it is still a number when it is decrypted. Alternatively, you can pass a value and a key instead.

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  • XCode: Function argument indentation

    - by user343317
    I was unable to find any solution of my specific issue. I'm using Xcode 3.2. I'd like to indent the next line of function argument just one step in from the previous line: somevariable = pow( a, b); However, Xcode's syntax-aware indenting insists on converting the above into: somevariable = pow( a, b); Where the arguments are aligned with opening parenthesis of the function. How can I make indenting be configured to match my preference?

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  • Better cout a.k.a coutn;

    - by Knowing me knowing you
    Guys would it be difficult to write coutn which will be basically place newline symbol at the end of the input. While working with console (that's all I can do at the moment) I'm finding very tedious to write '\n' every time I want the line to be a new line. Or maybe it is already implemented?

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  • replace new lines with comas in shell

    - by mpapis
    I want to replace new lines in text with coma or space but do not change the last new line. I know of this question: How to replace new lines with tab characters - but it does produce an tab on end instead of new line. So far I have come with: awk 'NR>1{printf","} {printf $1} END{printf"\n"}' Is there an easier way to do this? This is not an assignment, I am just curious want to level up my scripting.

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  • ob_start() -> ob_flush() doesn't work

    - by MB34
    I am using ob_start()/ob_flush() to, hopefully, give me some progress during a long import operation. Here is a simple outline of what I'm doing: <?php ob_start (); echo "Connecting to download Inventory file.<br>"; $conn = ftp_connect($ftp_site) or die("Could not connect"); echo "Logging into site download Inventory file.<br>"; ftp_login($conn,$ftp_username,$ftp_password) or die("Bad login credentials for ". $ftp_site); echo "Changing directory on download Inventory file.<br>"; ftp_chdir($conn,"INV") or die("could not change directory to INV"); // connection, local, remote, type, resume $localname = "INV"."_".date("m")."_".date('d').".csv"; echo "Downloading Inventory file to:".$localname."<br>"; ob_flush(); flush(); sleep(5); if (ftp_get($conn,$localname,"INV.csv",FTP_ASCII)) { echo "New Inventory File Downloaded<br>"; $datapath = $localname; ftp_close($conn); } else { ftp_close($conn); die("There was a problem downloading the Inventory file."); } ob_flush(); flush(); sleep(5); $csvfile = fopen($datapath, "r"); // open csv file $x = 1; // skip the header line $line = fgetcsv($csvfile); $y = (feof($csvfile) ? 2 : 5); while ((!$debug) ? (!feof($csvfile)) : $x <= $y) { $x++; $line = fgetcsv($csvfile); // do a lot of import stuff here with $line ob_flush(); flush(); sleep(1); } fclose($csvfile); // important: close the file ob_end_clean(); However, nothing is being output to the screen at all. I know the data file is getting downloaded because I watch the directory where it is being placed. I also know that the import is happening, meaning that it is in the while loop, because I can monitor the DB and records are being inserted. Any ideas as to why I am not getting output to the screen?

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  • Page width in SSRS

    - by Kramii
    I want ot draw a line the full width of the page in SSRS. If I could get the page width in (say) px, I could assign it as an expression to the line width. Is this possible? How? Or is there an alternative?

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  • How to manipulate a string, variable in shell

    - by user558134
    Hei everyone! I have this variable in shell containing paths separated by a space: LINE="/path/to/manipulate1 /path/to/manipulate2" I want to add additional path string in the beginning of the string and as well right after the space so that the variable will have the result something like this: LINE="/additional/path1/to/path/to/manipulate1 additional/path2/to/path/to/manipulate2" Any help appreciated Thanks in advance

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  • richfield problem

    - by jutt.chattha
    0 i am get the from the web and store in the rich text field but only one line show other all data is hidden if i hard coded show the all data but when we get the data base through web show only one line. the code reff is private RichTextField textOutputField; textOutputField.insert(""+GlobalDataStore.chatee+":" + bufVal+"\n");

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  • Netbeans: How do I break on a NullPointerException?

    - by darren
    Hi When debugging a java program in netbeans, I want the debugger to stop on the line that causes a NullPointerException so I can examine the variables there. I believe I have to use a condition on the breakpoint set at that line, but what is the syntax of the condition? thanks for the help

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  • PHP GD problem--not enough permission to make image?

    - by aaron
    Error: Warning: imagejpeg() [function.imagejpeg]: Unable to open 'images/xxx/xxx.jpg' for writing: Permission denied in /usr/www/users/xxx/resources/func.createthumbs.php on line 48 images/xxx/xxx/xxx.jpg Warning: Cannot modify header information - headers already sent by (output started at /usr/www/users/xxx/resources/updatethumbs.php:17) in /usr/www/users/xxx/resources/func.createthumbs.php on line 3 So... How can I change the permission? This is being run on a shared server--is it possible?

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  • Negative margins: can they work in IE7 and IE8?

    - by Haroldo
    I'm trying to have a kind of dirty underline effect using a string of hyphens, but I want it slightly closer to the multi-line title than the line-height. Negative margin works a treat in FF but no joy in IE? <p>a multiline title here<p><p style="margin: -7px 0px 10px 0px;">-----------------------------------------------------------------------------</p>

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  • Problem intialising 2D array

    - by TeeJay
    Ok, so I have a 2D Array that is initialised with values from a file (format: x y z). My file reads in the values correctly but when adding the z value to the matrix/2DArray, I run into a segfault and I have no idea why. It is possibly incorrect use of pointers? I still don't quite have the hang of them yet. This is my intialiser, works fine, even intialises all "z" values to 0. int** make2DArray(int rows, int columns) { int** newArray; newArray = (int**)malloc(rows*sizeof(int*)); if (newArray == NULL) { printf("out of memory for newArray.\n"); } for (int i = 0; i < rows; i++) { newArray[i] = (int*)malloc(columns*sizeof(int)); if (newArray[i] == NULL) { printf("out of memory for newArray[%d].\n", i); } } //intialise all values to 0 for (int i = 0; i < rows; i++) { for (int j = 0; j < columns; j++) { newArray[i][j] = 0; } } return newArray; } This is how I call the initialiser (and problem function). int** map = make2DArray(rows, columns); fillMatrix(&map, mapFile); And this is the problem code. void fillMatrix(int*** inMatrix, FILE* inFile) { int x, y, z; char line[100]; while(fgets(line, sizeof(line), inFile) != NULL) { sscanf(line, "%d %d %d", &x, &y, &z); *inMatrix[x][y] = z; } } From what I can gather through the use of ddd, the problem comes when y gets to 47. The map file has a max "x" value of 47 and a max "y" value of 63, I'm pretty sure I haven't got the order mixed up, so I don't know why the program is segfault-ing? I'm sure it's some newbie mistake...

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  • Firefox and Chrome slow on localhost; known fix doesn't work on Windows 7

    - by Herb Caudill
    Firefox and Chrome are known to be slow on localhost when IP6 is enabled. In previous versions of Windows, the simplest fix is to comment out this line from the hosts file, as explained in the answer to this question. ::1 localhost However, as noted in this question, in Windows 7 this line is already commented out: # localhost name resolution is handled within DNS itself. # 127.0.0.1 localhost # ::1 localhost Is there an alternative way to disable the ::1 localhost reference in Windows 7?

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  • How to search a file for a pattern and get a new file from the match point to end of file?

    - by WilliamKF
    I need to take a file and find the first occurrence of a literal string pattern as a complete line of the file: Acknowledgments: And then I wish to create a new file from the line of match all the way to the end of the file. I expect perl is a good way to do this, but I'm not much of a perl person, alternatively maybe sed is a good way? Please suggest a simple way to reliably accomplish this in Unix.

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