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  • Webservice connection data storage

    - by Mey
    Hello, I would like to ask you how can i implement the next: I have a tabBar where each tab make one different connection to one web service, and should show a different data. I would like to save this data "somewhere" and from it place load the different tabs. Where i should save this received data? Thank you, Best regards

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  • Javascript jQuery ajax submit default data

    - by onlineracoon
    How to submit default data when using $.ajax? I have tried: $.ajaxPrefilter(function(options, originalOptions, jqXHR) { // can't access anything here... (tried jqXHR.data but undefined) }); $.ajaxSetup({ beforeSend: function(jqXHR, settings) { // can't access anything here... (tried jqXHR.data but undefined) } }); I need this so I can send my CSRF token, each time and when logged in submit the user ID each time. I prefer not to submit a token in headers. Thanks

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  • Does beginTransaction in Hibernate allocate a new DB connection?

    - by illscience
    Hi folks - Just wondering if beginning a new transaction in Hibernate actually allocates a connection to the DB? I'm concerned b/c our server begins a new transaction for each request received, even if that request doesn't interact with the DB. We're seeing DB connections as a major bottleneck, so I'm wondering if I should take the time narrow the scope of my transactions. Searched everywhere and haven't been able to find a good answer. The very simple code is here: SessionFactory sessionFactory = (SessionFactory) Context.getContext().getBean("sessionFactory"); sessionFactory.getCurrentSession().beginTransaction(); sessionFactory.getCurrentSession().setFlushMode(FlushMode.AUTO); thanks very much! a

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  • SQL Server 15MM rows, simple COUNT query. 15+ seconds?

    - by john
    We took over a website from another company after a client decided to switch. We have a table that grows by about 25k records a day, and is currently at 15MM records. The table looks something like: id (PK, int, not null) member_id (int, not null) another_id (int, not null) date (datetime, not null) SELECT COUNT(id) FROM tbl can take up to 15 seconds. A simple inner join on 'another_id' takes over 30 seconds. I can't imagine why this is taking so long. Any advice? SQL Server 2005 Express

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  • Start all tab's activities for pre-cache

    - by Pentium10
    I have a TabActivity with three tabs defined. The first tab is light-weight and renders in acceptable time. But the 2nd and 3rd tab, does need a couple of seconds to get visually rendered, after I click them. I would like to launch them, after I've loaded my first tab, in background for pre-cache. Once they are loaded, I can switch quickly between them. So I am wondering how can I launch the 2nd and 3rd tab. They are intents loaded in the view area.

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  • asp.net dropdownlist databind on init causes data loss

    - by user2191496
    On which event or how should I bind data to the dropdownlist to avoid selected value overridden? For some reasons, I can't use "IsPostBack" to bind data only on postback I've tried binding data on page init, it works ok but when postback, the selected value will be overridden (Loss) protected void Page_Init(object sender, EventArgs e) { this.BindData(); } protected void BindData() { //grab the source of dropdownlist }

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  • What is the time complexity of LinkedList.getLast() in Java?

    - by i.
    I have a private LinkedList in a Java class & will frequently need to retrieve the last element in the list. The lists need to scale, so I'm trying to decide whether I need to keep a reference to the last element when I make changes (to achieve O(1)) or if the LinkedList class does that already with the getLast() call. What is the big-O cost of LinkedList.getLast() and is it documented? (i.e. can I rely on this answer or should I make no assumptions & cache it even if it's O(1)?)

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  • Delete from empty table taking forver

    - by Will
    Hello, I have an empty table that previously had a large amount of rows. The table has about 10 columns and indexes on many of them, as well as indexes on multiple columns. DELETE FROM item WHERE 1=1 This takes approximately 40 seconds to complete SELECT * FROM item this takes 4 seconds. The execution plan of SELECT * FROM ITEM shows the following; SQL> select * from midas_item; no rows selected Elapsed: 00:00:04.29 Execution Plan ---------------------------------------------------------- 0 SELECT STATEMENT Optimizer=CHOOSE (Cost=19 Card=123 Bytes=73 80) 1 0 TABLE ACCESS (FULL) OF 'MIDAS_ITEM' (Cost=19 Card=123 Byte s=7380) Statistics ---------------------------------------------------------- 0 recursive calls 0 db block gets 5263 consistent gets 5252 physical reads 0 redo size 1030 bytes sent via SQL*Net to client 372 bytes received via SQL*Net from client 1 SQL*Net roundtrips to/from client 0 sorts (memory) 0 sorts (disk) 0 rows processed any idea why these would be taking so long and how to fix it would be greatly appreciated!!

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  • Why is Python so slow?

    - by Riemannliness
    Why is Python such a slow language, on average, compared to C/C++? I learned Python as my first programming language, but I've only just started with C and already I can feel and see the difference.

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  • Query to get data from a main table

    - by Thu Thuy
    I have an Information table with 3 colums tableName/FieldName/Value and its data like this: TableName|FieldName | Value Films |DateSortie |NULL Films |Duree |NULL Films |CodeLangue |NULL Films |Documentaire |NULL Could you show me a SQL statement to put data into the Value Field, please! Note that I also have table Films and its fields like data in FieldName field of the Information table Thanks in advance TNT

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  • F# why my recursion is faster than Seq.exists?

    - by user38397
    I am pretty new to F#. I'm trying to understand how I can get a fast code in F#. For this, I tried to write two methods (IsPrime1 and IsPrime2) for benchmarking. My code is: // Learn more about F# at http://fsharp.net open System open System.Diagnostics #light let isDivisible n d = n % d = 0 let IsPrime1 n = Array.init (n-2) ((+) 2) |> Array.exists (isDivisible n) |> not let rec hasDivisor n d = match d with | x when x < n -> (n % x = 0) || (hasDivisor n (d+1)) | _ -> false let IsPrime2 n = hasDivisor n 2 |> not let SumOfPrimes max = [|2..max|] |> Array.filter IsPrime1 |> Array.sum let maxVal = 20000 let s = new Stopwatch() s.Start() let valOfSum = SumOfPrimes maxVal s.Stop() Console.WriteLine valOfSum Console.WriteLine("IsPrime1: {0}", s.ElapsedMilliseconds) ////////////////////////////////// s.Reset() s.Start() let SumOfPrimes2 max = [|2..max|] |> Array.filter IsPrime2 |> Array.sum let valOfSum2 = SumOfPrimes2 maxVal s.Stop() Console.WriteLine valOfSum2 Console.WriteLine("IsPrime2: {0}", s.ElapsedMilliseconds) Console.ReadKey() IsPrime1 takes 760 ms while IsPrime2 takes 260ms for the same result. What's going on here and how I can make my code even faster?

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  • how does array_diff work?

    - by SpawnCxy
    I just wonder how array_diff() works.And obviously it couldn't work as follows function array_diff($arraya, $arrayb) { $diffs = array(); foreach ($arraya as $keya => $valuea) { foreach ($arrayb as $valueb) { if ($valuea == $valueb) { break; } $diffs[$keya]=$valuea; } } return $diffs; } //couldn't be worse than this Hope someone can show me some better solution. Thanks.

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  • Simple iOS Get Request Not Pulling in Data

    - by user2793987
    I have a very simple get request that doesn't return data on my script. The script is fine when viewed in the web browser but the app does not pull in the data. Any other script works with this code in the app. I'm unsure of what to do because there shouldn't be a reason for this to not work. Please let me know if you need more information. Here's the script: https://shipstudent.com/complaint_desk/similarPosts.php?username=noah //retrieve saved username from user defaults (it's noah) NSUserDefaults *eUser = [NSUserDefaults standardUserDefaults]; savedUser = [eUser objectForKey:@"user"]; NSLog(@"%@",savedUser); in ViewDidLoad: NSString *categoryParam = [NSString stringWithFormat:@"https://shipstudent.com/complaint_desk/similarPosts.php?username=%@", savedUser]; NSURL *url = [NSURL URLWithString:categoryParam]; NSMutableURLRequest *request = [NSURLRequest requestWithURL:url cachePolicy:NSURLCacheStorageAllowed timeoutInterval:30.0]; NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self]; if (connection==nil) { NSLog(@"Invalid request"); } -(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response { postData = [[NSMutableData alloc]init]; NSLog(@"Response received"); } -(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { [postData appendData:data]; NSLog(@"Data received"); } -(void)connectionDidFinishLoading:(NSURLConnection *)connection { [UIApplication sharedApplication].networkActivityIndicatorVisible = NO; similarPosts = [NSJSONSerialization JSONObjectWithData:postData options:kNilOptions error:nil]; [postsTbl reloadData]; for (id postObject in similarPosts) { NSLog(@"Relatable Post: %@",postObject); } }

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  • How much faster is C++ than C#?

    - by Trap
    Or is it now the other way around? From what I've heard there are some areas in which C# proves to be faster than C++, but I've never had the guts to test it by myself. Thought any of you could explain these differences in detail or point me to the right place for information on this.

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  • Detecting when Javascript is performing poorly

    - by what-the-crap
    I'm working on a webapp in jquery that, on older machines or machines without much resources, may perform poorly. To get around this I'd like to make a degraded version that disables some of the features, particularly those that rely on large images. How can I tell if my app is running poorly on the user's computer in jquery or javascript in general? I just need a way to call a function that will degrade the app. (especially when the user may run low on system memory) The only way I can think of is for manual user intervention, but the option would add clutter for users that don't need it and users that do need it may not notice it. Thanks!

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  • Data structure in C# (3.0) that represents a CUBE

    - by Thinking
    Can you please give me some idea about how to design a data structure in C# (3.0) which will give a representation of 3D data structure. I mean to say something similar to cube. Like stock data to be viewed based on time , location . Kindly give a simple working example or even a link will do. It's urgent. Any example will be appreciated. Thanks in advance

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  • Should I use AJAX or get every data beforehand

    - by rix501
    I have a web app where I need to change a drop down list dynamically depending on another drop down list. I have two options: Get all the data beforehand with PHP and "manage" it later with Javascript. Or get the data the user wants through AJAX. The thing is, that the page loads with all the data by default and the user can later select a sub category to narrow the drop downs. Which of the two options are better (faster, less resource intensive)?

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  • Why is casting and comparing in PHP faster than is_*?

    - by tstenner
    While optimizing a function in PHP, I changed if(is_array($obj)) foreach($obj as $key=$value { [snip] } else if(is_object($obj)) foreach($obj as $key=$value { [snip] } to if($obj == (array) $obj) foreach($obj as $key=$value { [snip] } else if($obj == (obj) $obj) foreach($obj as $key=$value { [snip] } After learning about ===, I changed that to if($obj === (array) $obj) foreach($obj as $key=$value { [snip] } else if($obj === (obj) $obj) foreach($obj as $key=$value { [snip] } Changing each test from is_* to casting resulted in a major speedup (30%). I understand that === is faster than == as no coercion has to be done, but why is casting the variable so much faster than calling any of the is_*-functions?

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  • Why is i-- faster than i++ in loops? [closed]

    - by Afshin Mehrabani
    Possible Duplicate: JavaScript - Are loops really faster in reverse…? I don't know if this question is valid in other languages or not, but I'm asking this specifically for JavaScript. I see in some articles and questions that the fastest loop in JavaScript is something like: for(var i = array.length; i--; ) Also in Sublime Text 2, when you try to write a loop, it suggests: for (var i = Things.length - 1; i >= 0; i--) { Things[i] }; I want to know, why is i-- faster than i++ in loops?

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  • MySql: make this query faster… is there a way ? PART TWO

    - by robert
    This is part two of the question: http://stackoverflow.com/questions/2913639/mysql-make-this-query-faster-theres-a-way this query still run slowly: SELECT b.id, b.name, c.name FROM bookcorr as a JOIN books as b on b.id = a.books_id = JOIN Library as c on c.id = a.library_id WHERE a.category_id = '2521' AND a.library_id = '4983' ORDER BY b.name ASC LIMIT 0,15 Any suggest ?

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  • Using jquery statement within a jquery data object

    - by richardverbruggen
    As part of a jquery function u use this ajax post statement to get some reaction from a server. I want to pass some arguments to my test page. But these must be variables and are declared on the previous lines (iid and inst) How can i put these variables within the data object marked with the XX? iid = $(this).attr('iid'); inst = $(this).attr('inst'); $.post("test.php", { inst: XX, iid: XX},function(data){ alert("Data Loaded: " + data); });

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