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• In R: How do I choose the first 4 Rows of a Data Frame

  - by Moe

  How Do I go about getting the first 4 rows of my Dataframe: Weight Response 1 Control 59 0.0 2 Treatment 90 0.8 3 Treatment 47 0.1 4 Treamment 106 0.1 5 Control 85 0.7 6 Treatment 73 0.6 7 Control 61 0.2 In 'R'?

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• REST services - exposing non-data "actions"

  - by ctacke

  I understand how to use REST for doing general entity interactions - using urls names to map to entities and the HTTP verbs to map to actions on those entities. But what is the generally accepted way of looking at "actions" more like RPC? For example, let's say I want to send a command for the device to reset? There's no real "entity" here or do I do something like POST to http://mydevice/device/reset?

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• Anyone know about building a custom 'relevance' search of, say, a database?

  - by Daniel

  We need to be able to do a 'sort by relevance' search of a database for our application, but Googling 'sort by relevance custom search' doesn't do much good other than seeing Google Custom Search a 1000 times. It's a Cocoa CoreData database (double alliteration) if that matters. Thanks!

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• How to avoid resending data on refresh in php

  - by Priyanka

  Hello.I have a page "index.php" where i have a link called "add_users.php".In "add_users.php",i accept user information and come back to the same page "index.php" where information comes through post action and gets inserted into the database.When i refresh the page orhit back button,resend box appears.I went through many solution where they asked me to create third page.I tried doing that as follows:After inserting values in database,I redirected ht page as header('Location:http://mysite.com/thankyou.php, and in thankyou.php I again redirected the page to index.php.But getting warning as Cannot modify header information - headers already sent by.... provide me a better solution. Thank You in advance.

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• Error during data INSERT in php

  - by nectar

  here my code- $sql = "INSERT INTO tblpin ('pinId', 'ownerId', 'usedby', 'status') VALUES "; for($i=0; $i0) { $sql .= ", "; } $sql .= "('$pin[$i]', '$ownerid', 'Free', '1')"; } $sql .= ";"; echo $sql; mysql_query($sql); if(mysql_affected_rows() 0) { echo "done"; } else { echo "Fail"; } output: ** INSERT INTO tblpin ('pinId', 'ownerId', 'usedby', 'status') VALUES ('13837927', 'admin', 'Free', '1'), ('59576082', 'admin', 'Free', '1'); Fail why it is not inserting values when $sql query is right?

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• cell data format problem while getting php excell output

  - by cubuzoa

  Hi everyone,i created an application that takes the excell output of a table.There are long numbers in table cell.When i took the output the cells that have long numbers are seen like that 1234+E34.how can i fix that?Thanks for advance...

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• Read ssl data from PHP socket_listen()

  - by Regof

  Lets say a listening socket is created in PHP, and it accepts a secure connection. How do I know that it's encrypted and how do I decode it?

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• [PHP] converting mysql data into array?

  - by Mahmoud

  i have an ajax script that check if the user name is available or not, but it keeps taking the newest user name and the rest are out $result = mysql_query("Select username from customer"); while ($row = mysql_fetch_array($result)){ $existing_users=array(''.$row['username'].','); } i know i am doing something worng

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• Getting Data Specific to Logged in user

  - by user1770470

  I need to list logged in users active leads,and allow paging and selectable sorting, I cant use the grid because of the layout requirement. I have been searching the web for the last 2 days and cant find any viable solution Any help or direction would be greatly appreciated. var query = db.Query("SELECT a.listingId, a.datetime, c.details, c.buycommercial, c.buyindustrial, c.buyretail, c.buyland, c.tencommercial, c.tenindustrial, c.tenretail, c.tenland, c.investor, c.developer, d.companyname, d.firstname, d.lastname, d.tel, d.cell, d.email FROM dbo.tblactivebroker a JOIN dbo.tblActiveListing b ON a.ListingId = b.ListingId JOIN dbo.tblListings c ON b.ListingId = c.ListingId JOIN dbo.tblContact d ON c.crmid = d.id WHERE b.active = 'True' AND a.ActiveBrokerID = @0",brokerid);

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• how to show data on mouse over in datagrid

  - by prince23

  hi, i have an Datagrid lets say i have columns with name, age, mail ID. so all the details should be shown in a pop up or some thing like side also will do. is there any thing like an slide control so that once i make a mouse over the row i display that row values in silde? i need to show an pop up with details what i have displayed in that row. how can i achive this functionality here. right now binding values to datagrid is done this functioanlity is done. how can i go ahead to get an solution to show pop up on mouse over. any help on this issue would be really great and help fully. i am new to silver light concept plz provide an solution on this. thanks in advance prince

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• Performance difference - Script Task

  - by Sreejesh Kumar

  Is there any performance when using Script Task rather than other Task controls ? Whether the process will be slow or not !

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• PHP & MySQL question user submitted data?

  - by comma

  I was wondering how can I allow users to enter HTML and CSS to the there profiles safely using PHP and MySQL like they do on MySpace.

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• Android GPS data of Railway Stations of India

  - by user578098

  Hi, I want to make an android application that will intimate the users about the approaching railway stations in INDIA. For this I will use GPS (Location Manager etc) on Android. So far, I have not developed the applications using GPS, so I have little insight on the capabilities of Android API for this. I know, through the android API I can know the current location of the users through GPS and google API but can I know the location of nearby railway stations from Google API for India? Or can I know the latitude and longitude of all the Railway Stations so that I can pre-feed that in the applciation? Please help me in finding out the way.

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• Error occurs while using SPADE method in R

  - by Yuwon Lee

  I'm currently mining sequence patterns using SPADE algorithm in R. SPADE is included in "arulesSequence" package of R. I'm running R on my CentOS 6.3 64bit. For an exercise, I've tried an example presented in http://en.wikibooks.org/wiki/Data_Mining_Algorithms_In_R/Sequence_Mining/SPADE When I tried to do "cspade(x, parameter = list(support = 0.4), control = list(verbose = TRUE))" R says: parameter specification: support : 0.4 maxsize : 10 maxlen : 10 algorithmic control: bfstype : FALSE verbose : TRUE summary : FALSE preprocessing ... 1 partition(s), 0 MB [0.096s] mining transactions ... 0 MB [0.066s] reading sequences ...Error in asMethod(object) : 's' is not an integer vector When I try to run SPADE on my Window 7 32bit, it runs well without any error. Does anybody know why such errors occur?

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• Updating a sql server table with data from another table

  - by David G

  I have two basic SQL Server tables: Customer (ID [pk], AddressLine1, AddressLine2, AddressCity, AddressDistrict, AddressPostalCode) CustomerAddress(ID [pk], CustomerID [fk], Line1, Line2, City, District, PostalCode) CustomerAddress contains multiple addresses for the Customer record. For each Customer record I want to merge the most recent CustomerAddress record where most recent is determined by the highest CustomerAddress ID value. I've currently got the following: UPDATE Customer SET AddressLine1 = CustomerAddress.Line1, AddressPostalCode = CustomerAddress.PostalCode FROM Customer, CustomerAddress WHERE Customer.ID = CustomerAddress.CustomerID which works but how can I ensure that the most recent (highest ID) CustomerAddress record is selected to update the Customer table?

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• Data mixing SQL Server

  - by Pythonizo

  I have three tables and a range of two dates: Services ServicesClients ServicesClientsDone @StartDate @EndDate Services: ID | Name 1 | Supervisor 2 | Monitor 3 | Manufacturer ServicesClients: IDServiceClient | IDClient | IDService 1 | 1 | 1 2 | 1 | 2 3 | 2 | 2 4 | 2 | 3 ServicesClientsDone: IDServiceClient | Period 1 | 201208 3 | 201210 Period = YYYYMM I need to insert into ServicesClientsDone the months range from @StartDate up @EndDate. I have also a temporary table (#Periods) with the following list: Period 201208 201209 201210 The query I need is to give me back the following list: IDServiceClient | Period 1 | 201209 1 | 201210 2 | 201208 2 | 201209 2 | 201210 3 | 201208 3 | 201209 4 | 201208 4 | 201209 4 | 201210 Which are client services but the ranks of the temporary table, not those who are already inserted This is what i have: Table periods: DECLARE @i int DECLARE @mm int DECLARE @yyyy int, DECLARE @StartDate datetime DECLARE @EndDate datetime set @EndDate = (SELECT GETDATE()) set @StartDate = (SELECT DATEADD(MONTH, -3,GETDATE())) CREATE TABLE #Periods (Period int) set @i = 0 WHILE @i <= DATEDIFF(MONTH, @StartDate , @EndDate ) BEGIN SET @mm= DATEPART(MONTH, DATEADD(MONTH, @i, @FechaInicio)) SET @yyyy= DATEPART(YEAR, DATEADD(MONTH, @i, @FechaInicio)) INSERT INTO #Periods (Period) VALUES (CAST(@yyyy as varchar(4)) + RIGHT('00'+CONVERT(varchar(6), @mm), 2)) SET @i = @i + 1; END Relation between ServicesClients and Services: SELECT s.Name, sc.IDClient FROM Services JOIN ServicesClients AS sc ON sc.IDService = s.ID Services already done and when: SELECT s.Name, scd.Period FROM Services JOIN ServicesClients AS sc ON sc.IDService = s.ID JOIN ServicesClientsDone AS scd ON scd.IDServiceClient = sc.IDServiceClient

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• WPF data binding issue .

  - by Praveen

  Hi All, I have a wpf app and there i simply have a dock panel and inside dock panel i have a textblock. I want to bind the text property of textblock to my custom objects property but that' not working. I think i am missing something here but don't know what. Here is the code snippet. <TextBlock Text="{Binding Source=myDataSource, Path=ColorName}"/> </DockPanel> My custom class. class MyData { public string ColorName { get; set; } } and main window constructor.. public partial class MainWindow : Window { MyData myDataSource; public MainWindow() { InitializeComponent(); myDataSource = new MyData { ColorName = "Red" }; } }

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• How to read JSON array with @ # tags in data using jQuery,

  - by nga

  { "locenter": [ { "loname": { "@empid": "1001", "#text": "FE1" }, "centers": [ { "@id": "0000100001", "#text": "dcgiDal" } ] }, { "loname": { "@empid": "1002", "#text": "FE2" }, "centers": [ { "@id": "0000300006", "#text": "dcgiDah" }, { "@id": "0000100006", "#text": "dcgiDau" } ] } ] }

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• how to order string logically

  - by just_name

  Q: I have the following case : set of letters (grades) A,A+,A-,B,B+,B- stored as strings in the database i wanna to order these grades logically from the small one to the big one ,, but this not what happen in real.. because these are strings the order is: A,A+,A- i wanna ASC A-,A,A+ DESC A+,A,A- i bind those grades in drop down list and i wanna these grades with this logical order in it.. is there any idea how to do something like this..

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• Error during data UPDATE in php

  - by Piyush

  $sql = "UPDATE tblprofile SET name = '$membername' , f_h_name = '$fathername', maritalS = '$mstatus' , dob = '$dob' , occupation = '$occupation' , nominee = '$nominee' , address1 = '$address1' , address2 = '$address2', city = '$city', district = '$district', state = '$state', pin = '$areapin', mobile = '$mobileno', email = '$email', PANno = '$panno', bankname = '$bankname', branch = '$branch', accountno = '$accountno' WHERE userId = '$_SESSION['UserId']' "; //line 212 if(mysql_query($sql)) { echo "Updation Done."; } Error comes in browser : Parse error: syntax error, unexpected T_ENCAPSED_AND_WHITESPACE, expecting T_STRING or T_VARIABLE or T_NUM_STRING in C:\xampp\htdocs\303\saveEditProfile.php on line 212

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• MVC2 AJAX - determining UpdateTargetId based on the returned data

  - by DanielJW

  The scenario: I'm creating a login form for an MVC2 application. How i'm doing it: The form submits to an MVC2 action which validates the username/password. If it fails validation the action returns the form (a partial view) for the user to try again. If it passes validation the action returns the page the user was visiting before they logged in (a view). What i want to happen: 1 - when the form is submitted and the user validates successfully, The returned result should replace the current page (like what happens if you don't set an UpdateTargetId). 2 - When the form is submitted and the user fails validation, the returned result should replace the form (like what happens if you set the UpdateTargetID to the form's containing element). The problem: I can make both of those things work, but not at the same time. I can either have it always replace the current page, or always just replace the contents of the UpdateTargetId element. But I need it to be able to do either depending on whether the user successfully validated or not. What I need The ideal solution would be to be able to examine the result of the ajax request and determine whether to use the UpdateTargetId (replacing just the form) or not (replacing the whole page). I expect it would involve some work with jquery (assuming it's possible) but i'm not really that great with jquery yet to figure out how to do it myself. If it can't be done this way I'm also open to other methods/solutions for making it work in a similar fashion. Thanks in advance ..

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• How do i get an instance of the entity type based on MetaTable

  - by dimak

  is there a way to go from a MetaTable to an instance of an entity type so it can be queried with LINQ? What I want to do is this: MetaTable table = GridDataSource.GetTable (); var entity = table.GetInstanceOfEntity(); var test = (from t in entity select t).ToList(); where table.GetInstanceOfEntity() is something that I'm not sure how to implement. Thank you

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• Get image data in Javascript?

  - by detariael

  I have a regular HTML page with some images (just regular IMG HTML tags). I'd like to get their content, base64 encoded preferably, without the need to redownload the image (ie. it's already loaded by the browser, so now I want the content). I'd love to achieve that with Greasemonkey and Firefox.

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• encode data in get request

  - by user902395

  <!DOCTYPE html> <html> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <body onload="searchForPrograms.submit();"> <form id="searchForPrograms" name="searchForPrograms" enctype="application/x-www-form-urlencoded" method="get" action="searchingEngine.php"> <input type="text" id="query" name="query" value="MyProgram" /><br> <input type="submit" value="Search" /> </form> </body> The get request should have the form like "searchingEngine.php?query=%22MyProgram%22". How can I encode the value of the query input correctly?

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• [C++] Needed: A simple C++ container (stack, linked list) that is thread-safe for writing

  - by conradlee

  I am writing a multi-threaded program using OpenMP in C++. At one point my program forks into many threads, each of which need to add "jobs" to some container that keeps track of all added jobs. Each job can just be a pointer to some object. Basically, I just need the add pointers to some container from several threads at the same time. Is there a simple solution that performs well? After some googling, I found that STL containers are not thread-safe. Some stackoverflow threads address this question, but none form a consensus on a simple solution.

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