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• How does including a .csv work in an enum?

  - by Tommy

  enum ID // IDs { ID_HEADER = 0, // ID 0 = headers #include "DATA.CSV" ID_LIMIT }; I inherited some code here..... Looking at "DATA.CSV" I see all the ID's used to populate the enum in column B, along with other data. My question: How does the enum know that it is using "column B" to retrieve it's members? There must be some other logic in the application yet I don't see it. What else should I look for? Thanks.

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• Python - a clean approach to this problem?

  - by Seafoid

  Hi, I am having trouble picking the best data structure for solving a problem. The problem is as below: I have a nested list of identity codes where the sublists are of varying length. li = [['abc', 'ghi', 'lmn'], ['kop'], ['hgi', 'ghy']] I have a file with two entries on each line; an identity code and a number. abc 2.93 ghi 3.87 lmn 5.96 Each sublist represents a cluster. I wish to select the i.d. from each sublist with the highest number associated with it, append that i.d. to a new list and ultimately write it to a new file. What data structure should the file with numbers be read in as? Also, how would you iterate over said data structure to return the i.d. with the highest number that matches the i.d. within a sublist? Thanks, S :-)

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• Embedded Java Databases for Large Data Sets

  - by ExAmerican

  I would like to port a PHP/MySQL-based client/server application to be a standalone desktop application written in Java. The database has grown to be fairly large, with several tables with hundreds of thousands of rows. I expect these could grow to over a million entries for certain tables. What embedded database would best handle this? HSQLDB and Sqlite seem to be the obvious choices, though I'm guessing there are others out there as well. My main priorities are the ability to perform queries on large amounts of data efficiently (this thread seems to confirm Sqlite can handle this) and the ease with which I can import old data from MySQL (I remember HSQLDB being kind of a pain for that). Note: I am aware that similar questions comparing embedded databases have been posted before (for example here and here) but as my priorities differ somewhat from most applications considering the large data migration I thought it justified a new question.

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• Why is there "data" and "newtype" in Haskell?

  - by martingw

  To me it seems that a newtype definition is just a data definition that obeys some restrictions (only one constructor and such), and that due to these restrictions the runtime system can handle newtypes more efficiently. Ok, and the handling of pattern matching for undefined values is slightly different. But suppose Haskell would only knew data definitions, no newtypes: Couldn't the compiler find out for himself whether a given data definition obeys these restrictions, and automatically treat it more efficiently? I'm sure I'm missing out on something, these Haskell designers are so clever, there must be some deeper reason for this...

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• POST request is returning response success but is not posting the data

  - by Vineeth

  I am making a POST request to the MOXTRA API and it should return me the following response : { "data": { "id": user_id, //some user id "revision": 5, "name": "My First Binder", "created_time": 1402384947587, "updated_time": 1402384947587 }, "code": "RESPONSE_SUCCESS" } And I am making this POST request using Java Script var d = { 'name': 'My First Binder' }; var bind = JSON.stringify(d); $.post('https://api.moxtra.com/user_id/binders?access_token=' + access_token+ '&callback=?', bind, function(response) { alert( response.data.id); },'json'); }) But the alert that i get for alert(response.data.id) is "undefined" and the alert if i write alert(response.code) is "RESPONSE_SUCCESS" What is wrong with the above code , how am i getting a response success and getting undefined at the same time

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• CoreData Model Objects for API

  - by theiOSguy

  I am using CoreData in my application. I want to abstract out all the CoreData related stuff as an API so that the consume can use the API instead of directly using CoreData and its generated model objects. CoreData generates the managed objects model as following @interface Person : NSManagedObject @end I want to define my API for example MyAPI and it has a function called as createPerson:(Person*)p; So the consumer of this createPerson API needs to create a Person data object (like POJO in java world) and invoke this API. But I cannot create Person object using Person *p = [Person alloc] init] because the designated initializer for this Person model created by CoreData does not allow this type of creation. So should I define corresponding user facing data object may be PersonDO and this API should take that instead to carry the data into the API implementation? Is my approach right? Any expert advise if design the API this way is a good design pattern?

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• file_get_contents not displaying any data

  - by Lance

  I'm doing $info = file_get_contents('http://USERNAME:[email protected]/v2/sales?client_key=CLIENT_KEY'); $info returns nothing. However, when I put the URL into my browser, JSON appears. I tried using cURL without any luck. $data = array('client_key' => 'CLIENT_KEY'); $link = "http://api.appfigures.com/v2/sales"; $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $link); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_POST, count($data)); curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data)); curl_setopt($ch, CURLOPT_USERPWD, "username:password"); curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC); $jsonData = curl_exec($ch); curl_close($ch); print_r($jsonData); Thanks

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• What exactly is a memory page fault?

  - by dontWatchMyProfile

  From the docs: Note: Core Data avoids the term unfaulting because it is confusing. There's no “unfaulting” a virtual memory page fault. Page faults are triggered, caused, fired, or encountered. Of course, you can release memory back to the kernel in a variety of ways (using the functions vm_deallocate, munmap, or sbrk). Core Data describes this as “turning an object into a fault”. Is a Fault in Core Data essentially a memory page fault? I have only a slight idea about what a memory page is. I believe it's a kind of "piece of code in memory" which is needed to execute procedures and stuff like that, and as the app is runing, pieces of code are sucked into memory as "pages" and thrown away as they're not needed anymore. Probably 99% wrong ;) Anyone?

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• Why would I want to have a non-standard attribute?

  - by dontWatchMyProfile

  The documentation on Core Data entities says: You might implement a custom class, for example, to provide custom accessor or validation methods, to use non-standard attributes, to specify dependent keys, to calculate derived values, or to implement any other custom logic. I stumbled over the non-standard attributes claim. It's just a guess: If my attribute is anything other than NSString, NSNumber or NSDate I will want to have a non-standard Attribute with special setter and getter methods? So, for example, if I wanted to store an image, this would be a non-standard Attribute with type NSData and a special method, say -(void)setImageWithFileURL:(NSURL*)url which then pulls the image data from the file, puts in in an NSData and assigns it to core data? Or did I get that wrong?

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• Data is not get when i call web service

  - by rash111

  I am using curl for post web service call . In local i get data but when i shifted my code and web service to server i am not getting data. When i call from rest client which is add on for firefox i get data. when i hit through code i get following msg. Error:- 1.when using curl for post it reply:- Not Found. 2. when using file_get_contents it gives:-failed to open stream: HTTP request failed! HTTP/1.0 404 Not Found what can i do now

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• iPad --- managedObject problem when [self.tableViewSection reloadData]

  - by user345777

  Hi , I am creating a news aggregator application that fetches a xml feed every 4 minutes. After the xml is loaded, I clear everything by deleting all the objects in the database, then save the new objects back into the database. I then call [self.tableViewSection reloadData]; to reload the tableView. Thats when I get a problem. As soon as the code gets to a section where i access the new [[managedObject valueForKey:@"event_text"] description] content it fails with a : * Terminating app due to uncaught exception 'NSObjectInaccessibleException', reason: 'CoreData could not fulfill a fault for '0x4b3f6a0 '' Now from the flow I described on top, it seems odd to me that the tableView is populated properly the next time i launch the application, with the "new" data I fetched in the previous session. So its not that data thats corrupt , but seems to me something goes wrong when I refetch the managedObject after saving new data. Also keep in mind thats this app runs fine on the iPhone, its the iPad thats is giving me this problem.

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• not all data insert in convert from excell to database

  - by Gold

  hi i have this code: ConnectString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + ExcelFile + ";Extended Properties=\"Excel 12.0 Xml;HDR=No\""; SheetName = SheetName.Substring(0, SheetName.Length - 5); OleDbConnection Connection = new OleDbConnection(); Connection.ConnectionString = ConnectString; try {Connection.Open();} catch (Exception EX) { MessageBox.Show(EX.Message); } OleDbDataAdapter Command = new OleDbDataAdapter("SELECT * FROM [" + SheetName + "$]", Connection); DataSet ExcelData = new DataSet(); try {Command.Fill(ExcelData);} catch (Exception EX) { MessageBox.Show(EX.Message); } finally { if (Connection.State != ConnectionState.Closed) Connection.Close(); } but not all the data in column 1 insert - i get empty data why ? what can be wrong ? thank's in advance

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• How can I create a sample SQLLite DB for my iPhone app?

  - by Dr Dork

  I'm diving in to iPhone development and I'm building an iPhone app that uses the Core Data framework and my first task will be to get the model setup with a few that will display it. Thus far, I have the model defined and my Managed Object Files created, but I don't have a database with any sample data. What's a quick way to create a DB that conforms to my schema? Are there any tools that can generate a sample DB using my schemas? Is there a good tool I can use to directly manipulate the data in DB for testing purposes? Thanks in advance for your help! I'm going to continue researching this question right now.

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• Scalable way to store files on server (PHP)?

  - by Nathaniel Bennett

  I'm creating my first web application - a really simplistic online text editor. What I need to do is find the best way to store text based files - a lot of them. These text files can be past 10,000 words in size (text words not computer words.) in essence I want the text documents to be limitless in size. I was thinking about storing the text files in my MySQL database - but thought there was a better way. Instead I'm planing on storing the text files in XML based format in a directory on my server. The rows in the database define the name of the xml based text file and the user who created the text along with basic metadata. An ID is generated using a V4 GUID generator , which gives the text an id and stores the text in the "/store" directory on my server. The text definitions in my server contain this id, and the android app I'm developing gets the contents of the text file by retrieving the text definition and then downloading the text to the local device using the GUID in the text definition. I just think this is a botch job? how can I improve this system? There has been cases of GUID colliding. I don't want this to happen. A "slim" possibility isn't good enough - I need to make sure there is absolutely no chance in a GUID collision. I was planning on checking the database for texts that have the same id before storing the text with a particular id - I however believe with over 20,000 pieces of text in my database this would take an long time and produce unneeded stress on the server. How can I make GUID safe? What happens when a GUID collides? The server backend is going to be written in PHP.

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• Different output between release and Debug

  - by AthomSfere

  I can't figure this one out. I have a c++ Application that works in Debug mode exactly as expected: #include "stdafx.h" #include <string> #include <Windows.h> #include <iostream> using namespace std; void truncateServer(std::string inString); int _tmain(int argc, char *argv[]) { char* server = argv[1]; truncateServer(server); } void truncateServer(std::string inString) { std::string server = ""; int whackCount = 0; for (unsigned int i = 0; i < inString.length(); i++) { char c = inString[i]; if (whackCount < 3) { if (c == '\\') whackCount++; else server += c; } } cout << server; } For example if I call the server I want via its UNC path \\serverName\Share\ in the debug it gives me exactly what I want: servername However, if I use the release build I get nothing: I deleted the release output folder, but the issue is exactly the same. I can only assume there is some other difference between the release and build applications that is exposing a major issue with my code? Or another difference between the outputs I need to account for. What do I need to do to get the expected output?

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• Create a table of Quantiles in R for multiple Subsets of Data

  - by user1489719

  I'm trying to create append a table of quantiles in R for multiple subsets of data. Right now, I have a vector of ids (p_ids) in table DATA, which are not consecutive. For each value in p_ids, I am looking to list the quantile. So far, I've tried variations of: i <- 1 n <- 1 for (i in p_ids) { while(n <= nrow(data)) { quantiles[n] <- quantile(subset(alldata$variableA, alldata$variableB == i),probs = c(0,1,2,3)/3) n <- n + 1 } } I know my issue lies somewhere in the index, but I can't seem to get where the index should go. Suggestions?

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• Jquery can't get form data in opera

  - by Rick de Graaf

  I can't understand why in Opera and IE the following code does not work... $("#form_" + $(this).attr('id')).serialize(); I checked it by only getting the attribute; worked I checked if I could get the form data without serialize; worked How should I code this? Tried a lot of combinations and stuff but nothing works.. why does this isn't working in opera? In chrome I have no problems... To answer some of the questions below I have multiple forms on my page, each with an unique id (from_1, form_5 etc.) I checked this and is correct. The form data needs to be fetched when a select changes, so data call is fired by an change event.

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• [MVC] logic before dispatcher + controller?

  - by Spoonface

  I believe for a typical MVC web application the router / dispatcher routine is used to decide which controller is loaded based primarily on the area requested in the url by the user. However, in addition to checking the url query string, I also like to use the dispatcher to check whether the user is currently logged in or not to decide which controller is loaded. For example if they are logged in and request the login page, the dispatcher would load their account instead. But is this a fairly non-standard design? Would it violate MVC in any way? I only ask as the examples I've read through this weekend have had no major calculations performed before the dispatcher routine, and commonly check whether the user is logged in or not per controller, and then redirect where necessary. But to me it seems odd to redirect a logged in user from the login area to account area if you could just load the account controller in the first place? I hope I've explained my consternation well enough, but could anyone offer some details on how they handle logged in users, and similar session data?

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• object consisting of jQuery element

  - by Adam Kiss

  hello, current code I've built function to do something over collection of jQuery elements: var collection = $([]); //empty collection I add them with: collection = collection.add(e); and remove with: collection = collection.not(e); It's pretty straightforward solution, works nicely. problem Now, I would like to have an object consisting of various settings set to any jQuery element, i.e.: function addObject(e){ var o = { alpha: .6 //float base: {r: 255, g: 255, b: 255} //color object } e.data('settings', o); } But when I pass jQuery object/element to function (i.e. as e), calling e.data doesn't work, although it would be simplest and really nice solution. question If I have an "collection" of jQuery elements, what is the simplest way of storing some data for each element of set?

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• Finding data file location while using Microsoft Test Framework

  - by Nair

  I have been using NUnit and now I am switching to the Microsoft Unit Test frame work. In my test project I have a folder called TestData and I kept all my test input data files there. I want to use that files for my unit testing. In my test code, I am using Application name space and assembly name space but I can not get to the data folder directly until unless I write a code to find and replace some string to point to the data folder. I am sure someone might have run into the same problem, is the solution to change the path through program or is there a API call which will let us get to executing assembly folders? Thanks,

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• User class - 'load' data

  - by John

  <?php class User { private $id; private $username; public function __construct($id = null) { $this->id = $id; if (!is_null($this->id)) { $this->load(); } } public function load() { } } ?> In the 'load' method I am going to load all the information from the current user (id) But I wonder how is the best way to load all info. I could grab all data and then just assign all private variables, but I assume there must be another "cheaper" way to get all the data so I can use as such $this-variable; And not have to ASSIGN every single data row, I select in the load method. How?

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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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• Creating Oracle stored procedure that returns data

  - by user3614327

  In Firebird you can create a stored procedure that returns data an invoke it like a table passing the arguments: create or alter procedure SEL_MAS_IVA ( PCANTIDAD double precision) returns ( CANTIDAD_CONIVA double precision) as begin CANTIDAD_CONIVA = pCANTIDAD*(1.16); suspend; end select * from SEL_MAS_IVA(100) will return a single row single column (named CANTIDAD_CONIVA) relation with the value 116 This is a very simple example. The stored procedure can of course have any number of input and output parameters and do whatever it needs to return data (including multiple rows), which is accomplished by the "suspend" statement (which as it name implies, suspends the SP execution, returns data to the caller, and resumes with the next statement) How can I create such kind of stored procedures in Oracle?

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• Print Data Frame with Columns Center Aligned in R

  - by Glen

  I would like to print a data frame where the columns are center aligned. Below is what I have I tried, I thought printing the data frame test1 would result in the columns being aligned in the center but this is not the case. Any thoughts on how I can do this? test=data.frame(x=c(1,2,3),y=c(5,6,7)) names(test)=c('Variable 1','Variable 2') test[,1]=as.character(test[,1]) test[,2]=as.character(test[,2]) test1=format(test,justify='centre') print(test,row.names=FALSE,quote=FALSE) Variable 1 Variable 2 1 5 2 6 3 7 print(test1,row.names=FALSE,quote=FALSE) Variable 1 Variable 2 1 5 2 6 3 7

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• Counting values in data frame subject to conditions

  - by unixsnob

  I have been searching around and I cannot figure out how to sumarise the data I have in my data frame (subject to some ranges). I know that it can be done when applying some combination of daaply/taaply or table but I haven't been able to get the exact result I was expecting. Basically I want to turn this: part_no val1 val2 val3 2 1 2 3 45.3 2 1 3 4 -12.3 3 1 3 4 99.3 3 1 5 2 -3.2 3 1 4 3 -55.3 Into this: part_no val3_between0_50 val3_bw50_100 val3_bw-50_0 val3_bw-100_-50 2 1 0 0 1 0 3 0 1 0 1 1 This is dummy data, I got a lot more rows, but the idea is the same. I just want to count the number of values for a participant that meet certain condition. If anyone could explain it sort of step by step, I would really appreciate it. I saw lots of different little posts around, but none do exactly this and my attempts only got me half way there. Like using table, etc. Thanks!

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