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  • NullReferenceException when accessing variables in a 2D array in Unity

    - by Syed
    I have made a class including variables in Monodevelop which is: public class GridInfo : MonoBehaviour { public float initPosX; public float initPosY; public bool inUse; public int f; public int g; public int h; public GridInfo parent; public int y,x; } Now I am using its class variable in another class, Map.cs which is: public class Map : MonoBehaviour { public static GridInfo[,] Tile = new GridInfo[17, 23]; void Start() { Tile[0,0].initPosX = initPosX; //Line 49 } } I am not getting any error on runtime, but when I play in unity it is giving me error NullReferenceException: Object reference not set to an instance of an object Map.Start () (at Assets/Scripts/Map.cs:49) I am not inserting this script in any gameobject, as Map.cs will make a GridInfo type array, I have also tried using variables using GetComponent, where is the problem ?

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  • RGB values from image into a one dimension array in c#

    - by velocityxyz
    I was wondering if there is a was a way to read rgb values from an image into a one dimensional array in C#. If it doesnt make sense, in java I would do something like this. int[] pixels; BufferedImage image = getClass().getResourceAsStream("asdfghjkl.png"); int w = image.getWidth(); int h = image.getHeight(); pixels = new int[w * h]; image.getRGB(0, 0, w, h, pixels, 0, w) ; So any help would be great, or if you can point me in the right direction, that'd be great

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  • Handy Javascript array Extensions &ndash; distinct()

    - by Liam McLennan
    The following code adds a method to javascript arrays that returns a distinct list of values. Array.prototype.distinct = function() { var derivedArray = []; for (var i = 0; i < this.length; i += 1) { if (!derivedArray.contains(this[i])) { derivedArray.push(this[i]) } } return derivedArray; }; and to demonstrate: alert([1,1,1,2,2,22,3,4,5,6,7,5,4].distinct().join(',')); This produces 1,2,22,3,4,5,6,7

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  • Removing mdadm array and converting to regular disks while preserving data

    - by Jeffrey Kevin Pry
    I have a 6 disk (2TB each) mdadm RAID 5 volume created in Ubuntu 12.04 Server. However, I'm moving to a different solution and want to "unraid" my disks but keep the data. Only 50% is in use. From what I can surmise I basically have to do this recursively for each physical disk. Fail the disk Format the failed disk Move a portion of files to the new disk. Reshape the array Shrink the logical volume md0 This seems like a very time consuming process. Is there an easier way to do this (automatically perhaps) without buying new disks to temporarily hold the data? I am also aware that during this processing my RAID volume will be degraded and vulnerable the entire time. I am not too concerned about this and will be using battery backup and moving the most important files off first. Thank you for your help!

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  • Determining Whether a String Is Contained Within a String Array (Case Insensitive)

    About once every couple of months I need to write a bit of code that does one thing if a particular string is found within an array of strings and something else if it is not ignoring differences in case. For whatever reason, I never seem to remember the code snippet to accomplish this, so after spending 10 minutes of research today I thought I'd write it down here in an effort to help commit it to memory or, at the very least, serve as a quick place to find the answer when the need arises again.So without further adieu, here it is:Visual Basic Version:If stringArrayName.Contains("valueToLookFor", StringComparer.OrdinalIgnoreCase) Then ... Else ... End IfC# Version:if (stringArrayName.Contains("valueToLookFor", StringComparer.OrdinalIgnoreCase)) ... else ...Without the StringComparer.OrdinalIgnoreCase the search will be case-sensitive. For more information on comparing strings, see: New Recommendations for Using Strings in Microsoft .NET 2.0.Happy Programming!Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Unable to Mount Seagate Array from Iomega

    - by GE Cardiff
    I am new to Ubuntu so please be kind! My (Windows based) Iomega Storcentre ix2-200 stopped working, with all my business data upon it. Iomega helpfully told me that I should get Fedora, remove the Seagate hard drives and recover the information by connecting via a USB / SATA cable. First I could not get Fedora to load (due to it needing an Internet connection before loading complete) so I got Ubuntu - much easier to load. Software seems fine, and in "Computer" there is an "Array" icon - this is clearly the Seagate hard drive I have connected. It will not, however, Mount. "Unable to mount location, can't mount file". Any help gratefully received! As a slight aside, I can't seem to find "terminal" in this version of Ubuntu?

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  • Whole map design vs. tiles array design

    - by Mikalichov
    I am working on a 2D RPG, which will feature the usual dungeon/town maps (pre-generated). I am using tiles, that I will then combine to make the maps. My original plan was to assemble the tiles using Photoshop, or some other graphic program, in order to have one bigger picture that I could then use as a map. However, I have read on several places people talking about how they used arrays to build their map in the engine (so you give an array of x tiles to your engine, and it assemble them as a map). I can understand how it's done, but it seems a lot more complicated to implement, and I can't see obvious avantages. What is the most common method, and what are advantages/disadvantages of each?

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  • Comparison between a value with static type Array and a possibly unrelated type Class

    - by Kaoru
    I got this error: Comparison between a value with static type Array and a possibly unrelated type Class. After i modify the class to many classes (before that, everything is on 1 class (all of the functions)), but after i move everything to many classes (all the functions is not on 1 class), that error appear. How to solve this? I am using AS3 and as3isolib Library. Here is the code after i modify the function: if (Constant.dude.y < Constant._numY) { if (Constant.dude.sprites != marioBackClass) { Constant.dude.sprites = [marioBackClass]; Constant.dudeDir = "Up"; } } Here is the code before i change the function to many classes: if (dude.y < ._numY) { if (dude.sprites.toString() != marioBackClass.toString()) { dude.sprites = [marioBackClass]; dudeDir = "Up"; } }

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  • Setting a leader from a sprite array

    - by Craig
    I'm looking to set a leader from an array of sprites, I keep on getting a NullReferenceException was unhandled error from within my main game class when calling the UpdateMouse Method. What have I dont wrong here? class MouseSprite { Random random = new Random(); private MouseSprite leader; public void UpdateBoundaryBox() { mouseBounds.X = (int)mousePosition.X - mouseTexture.Width / 2; mouseBounds.Y = (int)mousePosition.Y - mouseTexture.Height / 2; } public void UpdateMouse(Vector2 position, MouseSprite [] mice, int numberMice, int index) { Vector2 catPosition = position; int enemies = numberMice; this.alive = true; mice[random.Next(0, mice.Length)] = leader;

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  • Channel 9 Interview: Array and Collection Initializers in Visual Basic 2010 (Beth Massi, Spotty Bowl

    Ive written about collection initializers on my blog before, but I thought Id catch up with the VB Team to tell me more about how they really work. In this interview Spotty Bowles, a tester on the VB Compiler team, shows us a couple of new language features: Array and Collection Initializers. He gives us insight into how they are implemented in the compiler and best practices on how to use them in our code. Additionally, he discusses how to extend Collection Initializers with your own extension...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Build a RAID-5 USB Array or NAS?

    - by TK Kocheran
    I'm looking to build a RAID-5 or RAID-6 hard disk array to be used as a centralized backup location for my home network. I have a lot of 4-8GB DVD ISO files which I intend to serve over the network to my TV using DLNA or something similar. I need decent write times, fast read times, and preferably a way to connect this array to my network router over USB. I'll probably be using ext3/4 on it (I'd use btrfs if my router supported it :-[). Is there a way to build a RAID array that is accessible over USB? I'm kind of new to this and most guides assume you're running a RAID array inside your machine. I need at least 5TB of space, and I need redundancy, so I prefer RAID-6. How can I go about accomplishing this?

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  • Resizing RAID 1 Array on Dell PowerEdge with Perc 4/Di & Windows SBS 2003

    - by Scott McKinney
    I have a Dell PowerEdge 2600 with Perc 4/Di RAID card and Windows SBS 2003 installed. The original system drive was a set of 17GB drives in a RAID 1 array. Over the years, these drives have failed (individually) and been replaced by a set of 73GB drives, but the RAID array is still 17GB in size. Is there a safe procedure to resize the RAID 1 array to use the entire 73GB without destroying/corrupting the data on the array? The Perc documentation mentions a Reconstruct option with Online Capacity Expansion, but is a woefully short on the exact details. Has anyone performed this procedure successfully (or unsuccessfully)? What were the steps? Are there any gotchas I should watch out for?

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  • Replacing a non-failing drive in a RAID-0 array

    - by TallFurryMan
    I have a Windows 7 machine booting on a RAID-0 pair of 500GB disks, controlled by an ICH9R. One of those was indicating an end-To-end SMART failure, so I added a spare disk as a temporary workaround, before receiving another to replace the failing one. The RAID-0 rebuilt on the spare and dropped the failing one from the array, as expected. Now that I received the new drive, what are my options to reintegrate it in the array? My first thought was to simply clone the temporary disk to the new one while the array is offline, but shouldn't there be a way to force a second rebuild, just as if the temporary drive had a warning, and drop that temporary from the array?

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  • converting 0+1 raid array to 0

    - by werelord
    I'm currently running raid 0+1; four 500 GB drives in the array.. I'm looking at migrating the array from 0+1 (Stripe+Mirror) to 0 only (stripe).. The goal is to remove the hard drives from the array in order to put them in the newly purchased Drobo, then copy the data from the remaining striped raid to the said Drobo.. Is it sufficient to just remove the drives themselves and change the raid configuration within the nvidia raid config?? Or is there something more that needs to be done?? Does the order matter (i.e. removing drives first or changing the raid configuration??) Is it possible to migrate the array this way without having any loss of data? I'm wary about burning all that data to DVDs (few hundred GB worth) to back it up.. Any other advice from people that may have done this (or have other insight) would be helpful as well..

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  • Replacing a non-failing drive in a RAID-0 array [migrated]

    - by TallFurryMan
    I have a Windows 7 machine booting on a RAID-0 pair of 500GB disks, controlled by an ICH9R. One of those is indicating an end-To-end SMART failure. I added a spare disk as a temporary workaround, before receiving another to replace the failing one (prices are awful these days). The RAID-0 rebuilt on the spare and dropped the failing one from the array, as expected. Now that I received the new drive, what are my options to reintegrate it in the array? My first thought was to simply clone the temporary disk to the new one while the array is offline, but shouldn't there be a way to force a second rebuild, just as if the temporary drive had a warning, and drop that temporary from the array?

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  • PHP array_search nor working?

    - by FFish
    What am I doing wrong here? $array = array('sky'=>'blue', 'grass'=>'green', 'sun'=>'yellow'); $key = array_search('green', $array); echo $key; error: Parse error: syntax error, unexpected T_DOUBLE_ARROW in /Applications/XAMPP/xamppfiles/htdocs/search-array.php on line 2

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  • Access Violation Using memcpy or Assignment to an Array in a Struct

    - by Synetech inc.
    Hi, I wrote a program last night that worked just fine but when I refactored it today to make it more extensible, I ended up with a problem. The original version had a hard-coded array of bytes. After some processing, some bytes were written into the array and then some more processing was done. To avoid hard-coding the pattern, I put the array in a structure so that I could add some related data and create an array of them. However now, I cannot write to the array in the structure. Here’s a pseudo-code example: main() { char pattern[]="\x32\x33\x12\x13\xba\xbb"; PrintData(pattern); pattern[2]='\x65'; PrintData(pattern); } That one works but this one does not: struct ENTRY { char* pattern; int somenum; }; main() { ENTRY Entries[] = { {"\x32\x33\x12\x13\xba\xbb\x9a\xbc", 44} , {"\x12\x34\x56\x78", 555} }; PrintData(Entries[0].pattern); Entries[0].pattern[2]='\x65'; //0xC0000005 exception!!! :( PrintData(Entries[0].pattern); } The second version causes an access violation exception on the assignment. I’m sure it’s because the second version allocates memory differently, but I’m starting to get a headache trying to figure out what’s what or how to get fix this. (I’m currently working around it by dynamically allocating a buffer of the same size as the pattern array, copying the pattern to the new buffer, making the changes to the buffer, using the buffer in the place of the pattern array, and then trying to remember to free the—temporary—buffer.) (Specifically, the original version cast the pattern array—+offset—to a DWORD* and assigned a DWORD constant to it to overwrite the four target bytes. The new version cannot do that since the length of the source is unknown—may not be four bytes—so it uses memcpy instead. I’ve checked and re-checked and have made sure that the pointers to memcpy are correct, but I still get an access violation. I use memcpy instead of str(n)cpy because I am using plain chars (as an array of bytes), not Unicode chars and ignoring the null-terminator. Using an assignment as above causes the same problem.) Any ideas? Thanks a lot.

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  • Cocoa - Enumerate mutable array, removing objects

    - by Ward
    Hey there, I have a mutable array that contains mutable dictionaries with strings for the keys latitude, longitude and id. Some of the latitude and longitude values are the same and I want to remove the duplicates from the array so I only have one object per location. I can enumerate my array and using a second enumeration review each object to find objects that have different ids, but the same latitude and longitude, but if I try to remove the object, I'm muting the array during enumeration. Is there any way to remove objects from an array while enumerating so I only enumerate the current set of objects as the array is updated? Hope this question makes sense. Thanks, Howie

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  • Does Blogging affect Job Prospects?

    - by BM
    Would a hiring manager at a small-to-medium consulting firm/corporation consider active blogging by a candidate about Programming/software/technology as a positive? Should the candidate disclose this information during the interviews or put it on the resume? Thanks for the answers, So far the views about this topic has been.. Don't mention the blog if it is not relevant to the job. Mention the blog, if you believe your blog has quality content. Potential risk of not being accepted by culture of the employer's workplace. Could be a valuable for consultants to publish & preview their skills and experience. Certain Employers may consider blogging of a candidate a plus. Be careful what you post on the blog,no badmouthing,rants and overt criticism of others. Do not lie about blogging,if directly asked during the interview.

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  • PHP Array to String equivalent

    - by Matt
    Hey all, I'm wondering if anyone has a recursive solution to converting an array to a string. Here's what I mean: An array $args that has the following contents: Array ( [0] => $hello [1] => 411px [Jeeves] => Array ( [compiling] => 1 ) ) Result after calling arr_to_string($args): array($hello,"411px", "Jeeves" => array("compiling" => 1)); Note: It recognizes the $ sign in front and therefore does not add quotes. It does the same for numbers. Anyone have any solution or can point me in the right direction? Thanks! Matt Mueller

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  • PHP job interview questions?

    - by Richard Knop
    Hello, I'm going to attend a job interview on Friday this week. It's an interview for a position of PHP programmer (the company doesn't do websites so I guess they just need somebody to administer their website). I'm expecting there will be more people at the interview and that we will be given some simple questions or tasks in PHP so they can choose. I'd like to ask if anybody has any experience with interviews like this, what should I be expecting? What are the most common questions or simple tasks/programs in PHP employers give to potential employees? Thanks.

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  • Birt 2.5.2 report generates empty table data when run from a cron job

    - by Trueblood
    I've got a shell script that runs genReport.sh in order to create a .pdf formatted report, and it works perfectly when it's run from the command line. The data source for the report is a ClearQuest database. When it's run from a CRON job the .pdf file is created, except that only the various report and column headers are displayed, and the data of the report is missing. There are no errors reported to STDERR during the execution of the script. This screams "environment variable" to me. Currently, the shell script is defining the following: CQ_HOME BIRT_HOME ODBCINI ODBCINST LD_LIBRARY_PATH If it's an environmental thing, what part of the environment am I missing?

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  • Objective C Array and Object Release

    - by david
    Hi, I have a newbie question regarding when to release the elements of a NSArray. See following pseudo code: NSMutalbeArray *2DArray = [[NSMutableArray alloc] initWithCapacity:10]; for (int i=0;i<10;i++) { NSMutableArray *array = [[MSMutableArray alloc] initWithCapacity:5]; for (int j=0;j<5;j++) { MyObject *obj = [[MyObject alloc] init]; [array addObject:obj]; [obj release]; } [2DArray addObject:array]; [array release]; } // use 2DArray to do something [2DArray release] My question here is, when I release 2DArray, do I need to explicitly release each of its element (array) first? Also, before I release the "array" object, do I need to release each of its element (MyObject) first? I am new to Objective C. Please help. thanks.

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