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• php / mysql pagination

  - by arrgggg

  Hi, I have a table with 58 records in mysql database. I was able to connect to my database and retrive all records and made 5 pages with links to view each pages using php script. webpage will look like this: name number john 1232343456 tony 9878768544 jack 3454562345 joe 1232343456 jane 2343454567 andy 2344560987 marcy 9873459876 sean 8374623534 mark 9898787675 nancy 8374650493 1 2 3 4 5 that's the first page of 58 records and those 5 numbers at bottom are links to each page that will display next 10 records. I got all that. but what I want to do is display the links in this way: 1-10 11-20 21-30 31-40 41-50 51-58 note: since i have 58 records, last link will display upto 58, instead of 60. Since I used the loop to create this link, depending on how many records i have, the link will change according to the number of records in my table. How can i do this? Thanks.

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• Convert CSV file to XML

  - by Soeren

  I need to Convert a CSV into an XML document. The examples I have seen so far, all show how to do this with a fixed number of columns in the CSV. I have this so far, using LINQ: String[] File = File.ReadAllLines(@"C:\text.csv"); String xml = ""; XElement top = new XElement("TopElement", from items in File let fields = items.Split(';') select new XElement("Item", new XElement("Column1", fields[0]), new XElement("Column2", fields[1]), new XElement("Column3", fields[2]), new XElement("Column4", fields[3]), new XElement("Column5", fields[4]) ) ); File.WriteAllText(@"C:\xmlout.xml", xml + top.ToString()); This is for a fixed amount of columns, but my .CSV has a different number of columns on each line. How would you fit some sort of loop into this, depending on how many words (columns) there are in each line of the .CSV? Thnx

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• which collection should I use

  - by Masna

  Hello, I have a number of custom objects of type X. X has a number of parameters and must be unique in the collection. (I created my own equals method based on the custom parameters to examine this) In each object of type x, I have a list of objects y. I want to add/remove/modify easily an object y. For example: To write the add method, it would be something like add(objTypeX, objTypeY) I would check or the collections already has a objTypeX. If so: i would add the objTypeY to the already existing objTypeX else: i would create objTypeX and add objTypeY to this object. To modify an objTypeY, it would be something like(objTypeX, objTypeY, newobjTypeY) I would get objTypeX out of the collections and modify objTypeY to newobjTypeY Which collections should I use? I tried with hashset but i can get a specific object out of the list, without run down the list till I find that object. I develop this in vb.net 3.5

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• Create Sum of calculated rows in Microsoft Reporting Services

  - by kd7iwp

  This seems like it should be simple but I can't find anything yet. In Reporting Services I have a table with up to 6 rows that all have calculated values and dynamic visibility. I would like to sum these rows. Basically I have a number of invoice items and want to make a total. I can't change anything on the DB side since my stored procedures are used elsewhere in the system. Each row pulls data from a different dataset as well, so I can't do a sum of the dataset. Can I sum all the rows with a table footer? Similarly to totaling a number of rows in Excel? It seems very redundant to put my visibility expression from each row into my footer row to calculate the sum.

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• IntPtr in 32 Bit OS, UInt64 in 64 bit OS

  - by Ngu Soon Hui

  I'm trying to do an interop to a C++ structure from C#. The structure ( in C# wrapper) is something like this [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)] public struct SENSE4_CONTEXT { public System.IntPtr dwIndex; //or UInt64, depending on platform. } The underlying C++ structure is a bit abnormal. In 32 bit OS, dwIndex must be IntPtr in order for the interop to work, but in 64 bit OS, it must be UInt64 in order for the interop to work. Any idea how to modify the above structure to make it work on both 32 and 64 bit OS?

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• How to save file and read

  - by Jessy

  Hello everyone, I create a program that place random image in grid layout format. The size of the grid layout is 6 x 6 = 36. Only 10 were filled with images (each image was different) and the rest were empty. freeimagehosting.net/uploads/bfb7e85f63.jpg How can I save it to a file and read it again, so it will display the same images with same placement on the grid? Here is the code that I used to save the images: //image file String []arrPic = {"pic1.jpg","pic2.jpg","pic3.jpg","pic4.jpg","pic5.jpg","pic6.jpg","pic7.jpg","pic8.jpg","pic9.jpg","pic10.jpg",,"pic11.jpg","pic12.jpg","pic13.jpg"}; ArrayList<String> pictures = new ArrayList<String>(Arrays.asList(arrPic)); ArrayList<String> file = new ArrayList<String>(); JPanel pDraw = new JPanel(new GridLayout(6,6,2,2)); ... //fill all grids with empty label for (int i =0; i<(6*6); i++){ JLabel lbl = new JLabel(""); pDraw.add(lbl); } ... //Choose random box to be filled with images for(int i=0; i<10; i++){ Boolean number = true; while(number){ int n = rand.nextInt(35); if(!(arraylist.contains(n))) number = false; arraylist.add(n); } //fill the grids with images for(int i=0; i<arraylist.size(); i++){ //select random image from arraylist int index = rand.nextInt (pictures.size()); String fileName = (String) pictures.get(index ); //find the image file icon = createImageIcon(fileName); //save the file in a new file file.add(fileName); //rescaled the image int x = rand.nextInt(50)+50; int y = rand.nextInt(50)+50; Image image = icon.getImage().getScaledInstance(x,y,Image.SCALE_SMOOTH); icon.setImage(image); //remove empty label and replace it with an image int one = (Integer) arraylist.get(i); pDraw.remove(one); final JLabel label; pDraw.add(label,one); }

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• A very basic auto-expanding list/array

  - by MainMa

  Hi, I have a method which returns an array of fixed type objects (let's say MyObject). The method creates a new empty Stack<MyObject>. Then, it does some work and pushes some number of MyObjects to the end of the Stack. Finally, it returns the Stack.ToArray(). It does not change already added items or their properties, nor remove them. The number of elements to add will cost performance. There is no need to sort/order the elements. Is Stack a best thing to use? Or must I switch to Collection or List to ensure better performance and/or lower memory cost?

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• Automatically compute variable upon input in SPSS

  - by what

  I have two cells in SPSS, months is a number of months, years_from_months is the number of years, calculated from the months (decimal: months / 12). What I want is that years_from_months is calculated (and updated) automatically, when I finish entering the months in months, i.e. that I don't have to explicitly call compute manually through the menu. I have defined years_from_months to calculate the years, but at the moment the field only updates when I go to the menu option Transform Compute variable ... and click OK in the window that opens. How can I set up the cell to update automatically (like in Excel)?

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• Ajax data two-way data binding strategies?

  - by morgancodes

  I'd like to 1) Draw create form fields and populate them with data from javascript objects 2) Update those backing objects whenever the value of the form field changes Number 1 is easy. I have a few js template systems I've been using that work quite nicely. Number 2 may require a bit of thought. A quick google search on "ajax data binding" turned up a few systems which seem basically one-way. They're designed to update a UI based on backing js objects, but don't seem to address the question of how to update those backing objects when changes are made to the UI. Can anyone recommend any libraries which will do this for me? It's something I can write myself without too much trouble, but if this question has already been thought through, I'd rather not duplicate the work.

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• Auto generating UI

  - by joshua

  Hi Guys; I am writting an application that autogenerated the data input UI from a java bean. Now i have a bean that has other beans as a property. eg User has property username, and usertype of type UserType; Whats the best strategy in java. Do i loop through the fields in an if else loop? eg. get field list if field is of type text use text field else if field is a number user a number field etc. is there a shortcut to the ifs?

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• SQL Server Group Concat with Different characters

  - by Molloch

  I have looked through a number of solutions to emulating "Group concat" functionality in SQL Server. I wanted to make a more human readable solution though and I can't work out how to do it. I have a view: ParentID | ChildName Which contains the records, for example: 1 | Max 1 | Jessie 2 | Steven 2 | Lucy 2 | Jake 3 | Mark I want to "Group Concat" these to get: 1 | Max and Jessie 2 | Steven, Lucy and Jake 3 | Mark So If there is only 1 child, just return name, if there are more than one, concat the last 2 with an ' and ' and all others with a ', '. I am a bit stuck on how to do this without resorting to CLR, which I don't want to do. I am happy with a function - but speed is an issue and how do I determine the child number so I can choose between ' and ', ', ' or ''?

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• Socket : can an asynchronous Receive returns without reading all the bytes I asked for?

  - by NorthWind

  Hi; I was reading an article on Vadym Stetsiak's blog about how to transfer variable length messages with async sockets (url: http://vadmyst.blogspot.com/2008/03/part-2-how-to-transfer-fixed-sized-data.html). He says : What to expect when multiple messages arrive at the server? While dealing with multiple messages one has to remember that receive operation can return arbitrary number of bytes being read from the net. Typically that size is from 0 to specified buffer length in the Receive or BeginReceive methods. So, even if I tell BeginReceive to read 100 bytes, it may read less than that and returns??? I am developing a network-enabled software (TCP/IP), and I always receive the same exact number of bytes I asked for. I don't even understand the logic : why would Receive completes asynchronously if it didn't get every byte I asked for ... just keep waiting. Maybe it has something to do with IP vs TCP? Thank you for your help.

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• Excel cell from one sheet to another sheet

  - by Eric

  Excel 07. I have two excel spreadsheets. Sheet1 has a few cells on it that I would like to be populated with a few cells from sheet2. This I want sheet1 to replicate this about 400 times for all employees in the agency. Here is the example. Sheet 1 Person name number1 number 2 number 3 Cell cell cell cell Sheet 2 Information sheet. Person name number1 Number2 number3 Jim 23 32 54 Sally 25 22 53 End result Sheet 3 Person name number1 number2 number3 Jim 23 32 54 Sheet 4 Person name number1 number2 number3 sally 25 22 53 Any help will be appreciated thank you.

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• Gluster strange issue with shared mount point like seprate mount.

  - by Satish

  I have two nodes and for experiment i have install glusterfs and create volume and successfully mounted on own node, but if i create file in node1 it is not showing in node2, look like both behaving like they are separate. node1 10.101.140.10:/nova-gluster-vol 2.0G 820M 1.2G 41% /mnt node2 10.101.140.10:/nova-gluster-vol 2.0G 33M 2.0G 2% /mnt volume info split brian $ sudo gluster volume heal nova-gluster-vol info split-brain Gathering Heal info on volume nova-gluster-vol has been successful Brick 10.101.140.10:/brick1/sdb Number of entries: 0 Brick 10.101.140.20:/brick1/sdb Number of entries: 0 test node1 $ echo "TEST" > /mnt/node1 $ ls -l /mnt/node1 -rw-r--r-- 1 root root 5 Oct 27 17:47 /mnt/node1 node2 (file isn't there, while they are shared mount) $ ls -l /mnt/node1 ls: cannot access /mnt/node1: No such file or directory What i am missing??

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• Disk-based caching of dynamic images in IIS 7

  - by Daniel Schierbeck

  I'm writing an image server which needs to handle a relatively large number of concurrent requests (~5,000). The images being served are dynamically scaled down and cropped based on per-image specifications, which are queried from a database. The number of images is rather large, so an in-memory cache isn't viable (thrashing would most definitely occur). I'm using native caching in IIS 7 to avoid hitting the ASP.NET app which generates the images on-the-fly. I've looked around, but I couldn't find a simple way to configure IIS to store the cache on-disk -- is there such an option, or would I need to roll my own? I'd rather avoid placing the generated images in a public folder, so they can be served statically, since I would prefer to invalidate the cache entries using a query parameter (last-edit time from the database,) which doesn't seem possible to reconcile with static caching. I would love to get some feedback on this!

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• Working with images in WCF

  - by hgulyan

  Hi, I have a desktop application that needs to upload/download images to/from service computer over TCP Protocol. At first, I stored images in file system, but I need to in MS SQL DB to compare which solution is better. Number of images is over half a million. I don't know yet will there be any limitation on size of a photo. If you have done smth like that, please, write what your opinion upon this question. Which one is faster, more safe? Which of them works better with this number of photos? If I'll store on DB, do I need to store images apart from all other tables which I use for my application and which type works better - image or varbinary on DB?..and so on. Thank you.

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• Yield only as many are required from a generator

  - by Matt Joiner

  I wish to yield from a generator only as many items are required. In the following code a, b, c = itertools.count() I receive this exception: ValueError: too many values to unpack I've seen several related questions, however I have zero interest in the remaining items from the generator, I only wish to receive as many as I ask for, without providing that quantity in advance. It seems to me that Python determines the number of items you want, but then proceeds to try to read and store more than that number. How can I yield only as many items as I require, without passing in how many items I want?

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• Dynamically Casting In ActionScript

  - by Joshua

  Is there a way to cast dynamically in Actionscript? What I want to accomplish is illustrated by the following code: var Val:*; var S:String=SomeTextEdit.text; switch (DesiredTypeTextEdit.text) { case 'int':Val=int(S);break; case 'uint':Val=uint(S);break; case 'String':Val=String(S);break; case 'Number':Val=Number(S);break; ... } SomeDisplayObject[SomePropertyNameTextEdit.text]=Val; I am looking for something LIKE the following PSEUDOCODE: SomeDisplayObject[SomePropertyName]=eval(DesiredType)(SomeTextEdit.text); Yes, I already realize that "eval" is not on the table, nor is that how one would use it. What's the RIGHT way?

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• Newbie question - MySQL index size

  - by Tommy

  I've just started to investigating how I should optimize my database. Indexing seems to be a good idea, so I want to index a VARCHAR column, the engine is MyISAM. From what I've read, I understand that an index is limited to a size of 1000 bytes. A VARCHAR character is 3 bytes in size. Does this mean that if I want to index a VARCHAR column with 50 rows, I need an index prefix of 6 characters? I came to that number by dividing 1000 with the row number 50, then the bytesize per character that is 3. 1000/50/3=6,66. It seems a little complicated, so I'm just wondering if I'm thinking right? It seems weird to me that you'd only be able to index 333 rows in a VARCHAR column, using a prefix of 1 character.

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• Why does my program crash when given negative values?

  - by Wayfarer

  Alright, I am very confused, so I hope you friends can help me out. I'm working on a project using Cocos2D, the most recent version (.99 RC 1). I make some player objects and some buttons to change the object's life. But the weird thing is, the code crashes when I try to change their life by -5. Or any negative value for that matter, besides -1. NSMutableArray *lifeButtons = [[NSMutableArray alloc] init]; CCTexture2D *buttonTexture = [[CCTextureCache sharedTextureCache] addImage:@"Button.png"]; LifeChangeButtons *button = nil; //top left button = [LifeChangeButtons lifeButton:buttonTexture ]; button.position = CGPointMake(50 , size.height - 30); [button buttonText:-5]; [lifeButtons addObject:button]; //top right button = [LifeChangeButtons lifeButton:buttonTexture ]; button.position = CGPointMake(size.width - 50 , size.height - 30); [button buttonText:1]; [lifeButtons addObject:button]; //bottom left button = [LifeChangeButtons lifeButton:buttonTexture ]; button.position = CGPointMake(50 , 30); [button buttonText:5]; [lifeButtons addObject:button]; //bottom right button = [LifeChangeButtons lifeButton:buttonTexture ]; button.position = CGPointMake(size.width - 50 , 30); [button buttonText:-1]; [lifeButtons addObject:button]; for (LifeChangeButtons *theButton in lifeButtons) { [self addChild:theButton]; } This is the code that makes the buttons. It simply makes 4 buttons, puts them in each corner of the screen (size is the screen) and adds their life change ability, 1,-1,5, or -5. It adds them to the array and then goes through the array at the end and adds all of them to the screen. This works fine. Here is my code for the button class: (header file) // // LifeChangeButtons.h // Coco2dTest2 // // Created by Ethan Mick on 3/14/10. // Copyright 2010 Wayfarer. All rights reserved. // #import "cocos2d.h" @interface LifeChangeButtons : CCSprite <CCTargetedTouchDelegate> { NSNumber *lifeChange; } @property (nonatomic, readonly) CGRect rect; @property (nonatomic, retain) NSNumber *lifeChange; + (id)lifeButton:(CCTexture2D *)texture; - (void)buttonText:(int)number; @end Implementation file: // // LifeChangeButtons.m // Coco2dTest2 // // Created by Ethan Mick on 3/14/10. // Copyright 2010 Wayfarer. All rights reserved. // #import "LifeChangeButtons.h" #import "cocos2d.h" #import "CustomCCNode.h" @implementation LifeChangeButtons @synthesize lifeChange; //Create the button +(id)lifeButton:(CCTexture2D *)texture { return [[[self alloc] initWithTexture:texture] autorelease]; } - (id)initWithTexture:(CCTexture2D *)atexture { if ((self = [super initWithTexture:atexture])) { //NSLog(@"wtf"); } return self; } //Set the text on the button - (void)buttonText:(int)number { lifeChange = [NSNumber numberWithInt:number]; NSString *text = [[NSString alloc] initWithFormat:@"%d", number]; CCLabel *label = [CCLabel labelWithString:text fontName:@"Times New Roman" fontSize:20]; label.position = CGPointMake(35, 20); [self addChild:label]; } - (CGRect)rect { CGSize s = [self.texture contentSize]; return CGRectMake(-s.width / 2, -s.height / 2, s.width, s.height); } - (BOOL)containsTouchLocation:(UITouch *)touch { return CGRectContainsPoint(self.rect, [self convertTouchToNodeSpaceAR:touch]); } - (void)onEnter { [[CCTouchDispatcher sharedDispatcher] addTargetedDelegate:self priority:0 swallowsTouches:YES]; [super onEnter]; } - (void)onExit { [[CCTouchDispatcher sharedDispatcher] removeDelegate:self]; [super onExit]; } - (BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event { CGPoint touchPoint = [touch locationInView:[touch view]]; touchPoint = [[CCDirector sharedDirector] convertToGL:touchPoint]; if ( ![self containsTouchLocation:touch] ) return NO; NSLog(@"Button touch event was called returning yes. "); //this is where we change the life to each selected player NSLog(@"Test1"); NSMutableArray *tempArray = [[[UIApplication sharedApplication] delegate] selectedPlayerObjects]; NSLog(@"Test2"); for (CustomCCNode *aPlayer in tempArray) { NSLog(@"we change the life by %d.", [lifeChange intValue]); [aPlayer changeLife:[lifeChange intValue]]; } NSLog(@"Test3"); return YES; } - (void)ccTouchMoved:(UITouch *)touch withEvent:(UIEvent *)event { CGPoint touchPoint = [touch locationInView:[touch view]]; touchPoint = [[CCDirector sharedDirector] convertToGL:touchPoint]; NSLog(@"You moved in a button!"); } - (void)ccTouchEnded:(UITouch *)touch withEvent:(UIEvent *)event { NSLog(@"You touched up in a button"); } @end Now, This function: - (BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event Is where all the shit goes down. It works for all of the buttons except the -5 one. And then, it gets to: NSLog(@"we change the life by %d.", [lifeChange integerValue]); And it crashes at that statement. It only crashes when given anything less than -1. -1 works, but nothing smaller does. Here is the code in the CustomCCNode Class, "changeLife" that is being called. - (void)changeLife:(int)lifeChange { NSLog(@"change life in Custom Class was called"); NSLog(@"wtf is lifechange: %d", lifeChange); life += lifeChange; lifeString = [[NSString alloc] initWithFormat:@"%d",life]; [text setString:lifeString]; } Straight forward, but when the NSnumber is -5, it doesn't even get called, it crashes at the NSlog statement. So... what's up with that?

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• Restfull authentication between two GAE apps.

  - by user259349

  Hello everyone, i am trying to write a restful google app engine application (python) that accepts requests only from another GAE that i wrote. I dont like any of the ways that i thought of to get this done, please advice if you know of something better than: Get SSL setup, and simply add the credentials on the request that my consuming app will send. I dont like it cause SSL will slow things down. Security by obsecurity. Pass a long number by my consuming app that is in Xmod0, where X is a secret number that both applications know. I just,,,, dont like this. Check the HTTP header to see where is the request coming from. This option is the one that i hate the least, not alot of processing, and spoofing an HTTP request is not really worth it, for my application's data. Is there any other clean solution for this?

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• SQL - Finding continuous entries of a given size.

  - by ByteMR

  I am working on a system for reserving seats. A user inputs how many seats they wish to reserve and the database will return a set of suggested seats that are not previously reserved that matches the number of seats being reserved. For instance if I had the table: SeatID | Reserved ----------------- 1 | false 2 | true 3 | false 4 | false 5 | false 6 | true 7 | true 8 | false 9 | false 10 | true And the user inputs that they wish to reserve 2 seats, I would expect the query to return that seats (3, 4), (4, 5), and (8, 9) are not reserved and match the given number of input seats. Seats are organized into sections and rows. Continuous seats must be in the same row. How would I go about structuring this query to work in such a way that it finds all available continuous seats that match the given input?

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• How can I work around the fact that in C++, sin(3.14159265) is not 0?

  - by Adam Doyle

  In C++, const double Pi = 3.14159265; cout << sin(Pi); // displays: 3.58979e-009 it SHOULD display the number zero I understand this is because Pi is being approximated, but is there any way I can have a value of Pi hardcoded into my program that will return 0 for sin(Pi)? (a different constant maybe?) In case you're wondering what I'm trying to do: I'm converting polar to rectangular, and while there are some printf() tricks I can do to print it as "0.00", it still doesn't consistently return decent values (in some cases I get "-0.00") The lines that require sin and cosine are: x = r*sin(theta); y = r*cos(theta); BTW: My Rectangular - Polar is working fine... it's just the Polar - Rectangular Thanks! edit: I'm looking for a workaround so that I can print sin(some multiple of Pi) as a nice round number to the console (ideally without a thousand if-statements)

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• warning in Eclipse

  - by lego69

  hello, I have some problems with Eclipse, I have structure struct Account{ const char* strLastName; //Client's last name const char* strFirstName; //Client's first name int nID; //Client's ID number int nLines; //Number of lines related to account double lastBill; //Client's last bill for all lines List linesDataBase; }; And I can't compile my code eclipse gives me an errors: Syntax error before List no semicolon at end of struct or union ISO does not allow extra ";" outside a function I have no idea how to change it, thanks in advance for any help

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• Performance monitor shows 4294967293 sessions active

  - by TGnat

  I have an ASP.Net 3.5 website running in IIS 6 on Windows Server 2003 R2. It is a relatively small internal application that probably serves less than ten users at any given time. The server has 4 Gig of memory and shows that 3+ Gig is available while the site is active. Just minutes after restarting the web application Performance monitor shows that there is a whopping 4,294,967,293 sessions active! I am fairly certain that this number is incorrect; at the time this reading there were only 100 requests to the website. Has anyone else experienced this kind odd behavior from perf mon? Any ideas on how to get an accurate reading? UPDATE: After running for about an hour the number of active sessions has dropped by 4. So it does seem to be responding to sessions timing out.

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