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  • Linq to object - Select Distinct

    - by Ben
    Hi, I can't quite figure out why this Linq Statement isn't working as i would expect: Dim distinctSurchargesList = (From thisparent As Parent In ThisParentCollection _ From thisChild As Child In thisparent.theseChildren _ Select New With {.childId = thischild.Id}).Distinct() I would assume that this would create a new collection of anonymous types, that would be distinct. Instead it creates a collection the size of the "ThisParentCollection" with duplicate "MyAnonymousType" in it (duplicate id's). Can anyone tell me where im going wrong? Thanks

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  • Problem with PHP 'PHP_SELF'

    - by shinjuo
    I am having a bit of trouble. It does not seem to be a big deal, but I have created a page that the user can edit a MySQL database. Once they click submit it should process the php within the if statement and echo 1 record updated. The problem is that it does not wait to echo the statement. It just seems to ignore the way I wrote my if and display the whole page. Can anyone see where I went wrong. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title></title> </head> <body> <form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post"> <?php require("serverInfo.php"); ?> <?php $res = mysql_query("SELECT * FROM cardLists order by cardID") or die(mysql_error()); echo "<select name = 'Cards'>"; while($row=mysql_fetch_assoc($res)) { echo "<option value=\"$row[cardID]\">$row[cardID]</option>"; } echo "</select>"; ?> Amount to Add: <input type="text" name="Add" /> <input type="submit" /> </form> <?php if(isset($_POST['submit'])); { require("serverInfo.php"); mysql_query("UPDATE `cardLists` SET `AmountLeft` = `AmountLeft` + ".mysql_real_escape_string($_POST['Add'])." WHERE `cardID` = '".mysql_real_escape_string($_POST['Cards'])."'"); mysql_close($link); echo "1 record Updated"; } ?> <br /> <a href="index.php"> <input type="submit" name="main" id="main" value="Return To Main" /></a> </body> </html>

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  • Why would you use "AS" when aliasing a SQL table?

    - by froadie
    I just came across a SQL statement that uses AS to alias tables, like this: SELECT all, my, stuff FROM someTableName AS a INNER JOIN someOtherTableName AS b ON a.id = b.id What I'm used to seeing is: SELECT all, my, stuff FROM someTableName a INNER JOIN someOtherTableName b ON a.id = b.id I'm assuming there's no difference and it's just syntactic sugar, but which of these is more prevalent/wide-spread? Is there any reason to prefer one over the other?

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  • Software Engineering Papers

    - by kunjaan
    Please recommend me software engineering/methodology/practices paper. So far I have enjoyed: 1968 Dijkstra : Go To Statement Considered Harmful Nikalus Wirth : Program Development by Stepwise Refinement 1971 David Parnas : Information Distribution Aspects of Design Methodology 1972 Liskov : Design Methodology for Reliable Software Systems Extensible Language : Schuman and P Jourrand R. Balzer Structured Programming : Dahl - Hierarchical Program StructuresImplementation Patterns 1971 Jim Morris Protection in Programming Languages 1973 Bill Wulf and Mary Shaw Global Variable Considered Harmful 1974 : Lisko and Zilles ADTs

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  • Best approach for coding ?

    - by ahmed
    What should or how should I decide the best approach for coding as a smart programmer. I have just started programming last year in VB, and I keep on listening this statement. But I never could find by myself to choose the best approach for coding. When I search for a coding example on internet I find different types of approach to achieve the same target. So help me finding the best approach. (asp.net,vb.net)

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  • Scheme Beginner question

    - by Robert
    Hello.I am trying to put the following statement in Dr.Scheme: {with {x {+ 5 5}} {+ x x}} but I got an error: expand: unbound identifier in module in: with anyone could help me?Thanks.

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  • phpbb specific forum page styles

    - by Ryan Max
    I am using phpbb on a site for a client, and the client has requested that each different forum page have a different background color. Such functionality is not built into phpbb (from what I can tell), so how should I go about doing this? Can I modify the code of phpbb directly? My other thought was to use a js conditional statement, but seeing as the only difference on the forums page would be the page title, I don't know how I could format this.

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  • C# How to to tell what process is using a file?

    - by JL
    I am getting a pretty common, "The process cannot access the file because it is being used by another process." Now I am nearly certain that the only process accessing this file is from code that I have written and I've been careful to use a using statement around accessing it. But to be 100% sure, is there anyway to check this programatically when this error occurs?

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  • What operation type invoked a trigger in SQL Server 2008?

    - by Neil Moss
    I'm contemplating a single SQL trigger to handle INSERT, UPDATE and DELETE operations as part of an auditing process. Is there any statement, function or @@ variable I can interrogate to find out which operation type launched the trigger? I've seen the following pattern: declare @type char(1) if exists (select * from inserted) if exists (select * from deleted) select @Type = 'U' else select @Type = 'I' else select @Type = 'D' but is there anything else a little more direct or explicit? Thanks, Neil.

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  • C# Foreach Loop - Continue Issue

    - by Goober
    I have a problem with a continue statement in my C# Foreach loop. I want it to check if there is a blank cell in the datagridview, and if so, then skip printing the value out and carry on to check the next cell. Help appreciated greatly. Here is the code: foreach (DataGridViewRow row in this.dataGridView1.Rows) { foreach (DataGridViewCell cell in row.Cells) { if (cell.Size.IsEmpty) { continue; } MessageBox.Show(cell.Value.ToString()); } }

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  • Lazy property loading in Nhibernate and Spring

    - by Khash
    I'm using NHibernate 2.1.2 and Spring 1.3 I have two Text columns (blobs) in one of my classes. I'm trying to use lazy="true" for the mapping of those properties but NHProfiler still shows the two columns being added to the SELECT statement when the main object is loaded. I'm using Spring.NHibernate session factory and have configured ProxyFactory with both Castle and Spring with no luck.

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  • Exception in Memset

    - by subbu
    When try to do a memset it gives the following exception "Unhandled exception at 0x1023af7d (PxSmartInterface.dll) in SendOutDllTestExe.exe: 0xC0000005: Access violation writing location 0x40e3a80e." My memset statement will look like this memset(lpStatus, 0, csStatus.GetLength());

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  • x:Static markup extension

    - by plotnick
    I have a Window.Resource object and the next statement <CollectionViewSource Source="{Binding Source={x:Static Application.Current}, Path=someProperty}" x:Key="someView" /> But what if I need to point to a public property in the Window's code-behind, not the App's? I've tried to use 'this' instead of 'Application.Current', but it doesn't work. Help me...

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  • Regex Query to get string value

    - by Alex
    Hi all, I am looking for a regex query that would allow me to retrieve a value from a string here are examples of my string: home.aspx?StudyID=0020101&aa=72 randompage.aspx?studyid=3023603&aa=40 myconfig.aspx?studyid=0021600&aa=40 I need to get the numerical value of the 'studyid' variable, please note that the name of the page will change so simply doing the substring and counting char spaces didn't work I unfortunately cannot use request.querystring method as this string is stored in the database and a select statement will be used for running this regex query Thanks

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  • How do I convert integers to characters in C#?

    - by Mike Webb
    I am trying to convert an index of 1 to 27 into the corresponding uppercase letter. I know that in C++ I could type this: char letter = 'A' + (char)(myIndex % 27); This same code does not work in C#. How can I accomplish this task in C#? EDIT: I'd rather not have to encode an enum or switch statement for this if there is a better mathematical solution like the one above.

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  • jquery - get url path?

    - by KittyYoung
    I know I can use window.location.pathname to return a url, but how do I parse the url? I have a url like this: http://localhost/messages/mine/9889 and I'm trying to check to see if "mine" exists in that url? So, if "mine" is the second piece in that url, I want to write an if statement based on that... if(second argument == 'mine') { do something }

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  • How do I determine whether it's a mobile device with PHP?

    - by Thomaschaaf
    I am writing a website with PHP. Since it will need to be accessed by anyone on the network to access the internet I have to create a mobile version. How do I best check if it's a mobile device? I don't want to have a switch statement with 50 devices at the end since I don't only want to support the iPhone. Is there a PHP class I could use?

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  • Is using the Class instance as a Map key a best practice?

    - by Pangea
    I have read somewhere that using the class instances as below is not a good idea as they might cause memory leaks. Can someone tell me if if that is a valid statement? Or are they any problems using it this way? Map<Class<?>,String> classToInstance=new HashMap(); classToInstanceMap.put(String.class,"Test obj");

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  • Best Practice : Import CSV to MYSQL Database using PHP 5.x

    - by ArneRie
    Howdy Folks, what is the best solution to import large amounts of records into an MySQL or Oracle Database. I Think there are two ways : Insert every record with an persistent connection Create on BIG SQL-Statement and query the Database Iam not sure wich is performing better ? Is there any Best Practice Solutions for this kind of operation ??

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  • Using IN with sets of tuples in SQL (SQLite3)

    - by gotgenes
    I have the following table in a SQLite3 database: CREATE TABLE overlap_results ( neighbors_of_annotation varchar(20), other_annotation varchar(20), set1_size INTEGER, set2_size INTEGER, jaccard REAL, p_value REAL, bh_corrected_p_value REAL, PRIMARY KEY (neighbors_of_annotation, other_annotation) ); I would like to perform the following query: SELECT * FROM overlap_results WHERE (neighbors_of_annotation, other_annotation) IN (('16070', '8150'), ('16070', '44697')); That is, I have a couple of tuples of annotation IDs, and I'd like to fetch records for each of those tuples. The sqlite3 prompt gives me the following error: SQL error: near ",": syntax error How do I properly express this as a SQL statement?

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