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  • How to improve compare of item in sorted List<MyItem> with item before and after current item?

    - by Oliver
    Does anyone know about a good way to accomplish this task? Currently i'm doing it more ore less this way, but i'm feeling someway unhappy with this code, unable to say what i could immediately improve. So if anyone has a smarter way of doing this job i would be happy to know. private bool Check(List<MyItem> list) { bool result = true; //MyItem implements IComparable<MyItem> list.Sort(); for (int pos = 0; pos < list.Count - 1; pos++) { bool previousCheckOk = true; if (pos != 0) { if (!CheckCollisionWithPrevious(pos)) { MarkAsFailed(pos); result = false; previousCheckOk = false; } else { MarkAsGood(pos); } } if (previousCheckOk && pos != list.Count - 1) { if (!CheckCollisionWithFollowing(pos)) { MarkAsFailed(pos); result = false; } else { MarkAsGood(pos); } } } return result; } private bool CheckCollisionWithPrevious(int pos) { bool checkOk = false; var previousItem = _Item[pos - 1]; // Doing some checks ... return checkOk; } private bool CheckCollisionWithFollowing(int pos) { bool checkOk = false; var followingItem = _Item[pos + 1]; // Doing some checks ... return checkOk; } Update After reading the answer from Aaronaught and a little weekend to refill full mind power i came up with the following solution, that looks far better now (and nearly the same i got from Aaronaught): public bool Check(DataGridView dataGridView) { bool result = true; _Items.Sort(); for (int pos = 1; pos < _Items.Count; pos++) { var previousItem = _Items[pos - 1]; var currentItem = _Items[pos]; if (previousItem.CollidesWith(currentItem)) { dataGridView.Rows[pos].ErrorText = "Offset collides with item named " + previousItem.Label; result = false; sb.AppendLine("Line " + pos); } } dataGridView.Refresh(); return result; }

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  • Stuck on the logic of creating tags for posts (like SO tags)? (PHP)

    - by ggfan
    I am stuck on how to create tags for each post on my site. I am not sure how to add the tags into database. Currently... I have 3 tables: +---------------------+ +--------------------+ +---------------------+ | Tags | | Posting | | PostingTags | +---------------------+ +--------------------+ +---------------------+ | + TagID | | + posting_id | | + posting_id | +---------------------+ +--------------------+ +---------------------+ | + TagName | | + title | | + tagid | +---------------------+ +--------------------+ +---------------------+ The Tags table is just the name of the tags(ex: 1 PHP, 2 MySQL,3 HTML) The posting (ex: 1 What is PHP?, 2 What is CSS?, 3 What is HTML?) The postingtags shows the relation between posting and tags. When users type a posting, I insert the data into the "posting" table. It automatically inserts the posting_id for each post(posting_id is a primary key). $title = mysqli_real_escape_string($dbc, trim($_POST['title'])); $query4 = "INSERT INTO posting (title) VALUES ('$title')"; mysqli_query($dbc, $query4); HOWEVER, how do I insert the tags for each post? When users are filling out the form, there is a checkbox area for all the tags available and they check off whatever tags they want. (I am not doing where users type in the tags they want just yet) This shows each tag with a checkbox. When users check off each tag, it gets stored in an array called "postingtag[]". <label class="styled">Select Tags:</label> <?php $dbc = mysqli_connect(DB_HOST, DB_USER, DB_PASSWORD, DB_NAME); $query5 = "SELECT * FROM tags ORDER BY tagname"; $data5 = mysqli_query($dbc, $query5); while ($row5 = mysqli_fetch_array($data5)) { echo '<li><input type="checkbox" name="postingtag[]" value="'.$row5['tagname'].'" ">'.$row5['tagname'].'</li>'; } ?> My question is how do I insert the tags in the array ("postingtag") into my "postingtags" table? Should I... $postingtag = $_POST["postingtag"]; foreach($postingtag as $value){ $query5 = "INSERT INTO postingtags (posting_id, tagID) VALUES (____, $value)"; mysqli_query($dbc, $query5); } 1.In this query, how do I get the posting_id value of the post? I am stuck on the logic here, so if someone can help me explain the next step, I would appreciate it! Is there an easier way to insert tags?

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  • self join- how to use the aggregate functions

    - by Ranjana
    self join- how to use the aggregate functions select a.tablename, b.TableName,b.UserName from Employee a inner join Employee b on a.ColumnValue=b.ColumnValue and and a.TableName <> b.TableName and a.UserName=b.UserName and also to check whether the same user has count of records i.e Employee a = count of records of Employee b. how to add count function over here

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  • spoj: runlength

    - by user285825
    For RLM problem of SPOJ: This is the problem: "Run-length encoding of a number replaces a run of digits (that is, a sequence of consecutive equivalent digits) with the number of digits followed by the digit itself. For example, 44455 would become 3425 (three fours, two fives). Note that run-length encoding does not necessarily shorten the length of the data: 11 becomes 21, and 42 becomes 1412. If a number has more than nine consecutive digits of the same type, the encoding is done greedily: each run grabs as many digits as it can, so 111111111111111 is encoded as 9161. Implement an integer arithmetic calculator that takes operands and gives results in run-length format. You should support addition, subtraction, multiplication, and division. You won't have to divide by zero or deal with negative numbers. Input/Output The input will consist of several test cases, one per line. For each test case, compute the run-length mathematics expression and output the original expression and the result, as shown in the examples. The (decimal) representation of all operands and results will fit in signed 64-bit integers." These are my testcases: input: 11 + 11 988726 - 978625 12 * 41 1124 / 1112 13 * 33 15 / 16 19222317121013161815142715181017 + 10 10 + 19222317121013161815142715181017 19222317121013161815142715181017 / 19222317121013161815142715181017 19222317121013161815142715181017 / 11 11 / 19222317121013161815142715181017 19222317121013161815142715181017 / 12 12 / 19222317121013161815142715181017 19222317121013161815142715181017 / 141621161816101118141217131817191014 141621161816101118141217131817191014 / 19222317121013161815142715181017 19222317121013161815142715181017 / 141621161816101118141217131817191013 141621161816101118141217131817191013 / 19222317121013161815142715181017 19222317121013161815142715181017 * 11 11 * 19222317121013161815142715181017 19222317121013161815142715181017 * 10 10 * 19222317121013161815142715181017 19222317121013161815142715181017 - 10 19222317121013161815142715181017 - 19222317121013161815142715181017 19222317121013161815142715181017 - 141621161816101118141217131817191014 19222317121013161815142715181017 - 141621161816101118141217131817191013 141621161816101118141217131817191013 + 141621161816101118141217131817191013 141621161816101118141217131817191013 + 141621161816101118141217131817191014 141621161816101118141217131817191014 + 141621161816101118141217131817191013 141621161816101118141217131817191014 + 10 10 + 141621161816101118141217131817191013 141621161816101118141217131817191013 + 11 11 + 141621161816101118141217131817191013 141621161816101118141217131817191013 * 12 12 * 141621161816101118141217131817191013 141621161816101118141217131817191014 - 141621161816101118141217131817191014 141621161816101118141217131817191013 - 141621161816101118141217131817191013 141621161816101118141217131817191013 - 10 141621161816101118141217131817191014 - 11 141621161816101118141217131817191014 - 141621161816101118141217131817191013 141621161816101118141217131817191014 / 141621161816101118141217131817191014 141621161816101118141217131817191014 / 141621161816101118141217131817191013 141621161816101118141217131817191013 / 141621161816101118141217131817191014 141621161816101118141217131817191013 / 141621161816101118141217131817191013 141621161816101118141217131817191014 * 11 11 * 141621161816101118141217131817191014 141621161816101118141217131817191014 / 11 11 / 141621161816101118141217131817191014 10 + 10 10 + 11 10 + 15 15 + 10 11 + 10 11 + 10 10 - 10 15 - 10 10 * 10 10 * 15 15 * 10 10 / 111213 output: 11 + 11 = 12 988726 - 978625 = 919111 12 * 41 = 42 1124 / 1112 = 1112 13 * 33 = 39 15 / 16 = 10 19222317121013161815142715181017 + 10 = 19222317121013161815142715181017 10 + 19222317121013161815142715181017 = 19222317121013161815142715181017 19222317121013161815142715181017 / 19222317121013161815142715181017 = 11 19222317121013161815142715181017 / 11 = 19222317121013161815142715181017 11 / 19222317121013161815142715181017 = 10 19222317121013161815142715181017 / 12 = 141621161816101118141217131817191013 12 / 19222317121013161815142715181017 = 10 19222317121013161815142715181017 / 141621161816101118141217131817191014 = 11 141621161816101118141217131817191014 / 19222317121013161815142715181017 = 10 19222317121013161815142715181017 / 141621161816101118141217131817191013 = 12 141621161816101118141217131817191013 / 19222317121013161815142715181017 = 10 19222317121013161815142715181017 * 11 = 19222317121013161815142715181017 11 * 19222317121013161815142715181017 = 19222317121013161815142715181017 19222317121013161815142715181017 * 10 = 10 10 * 19222317121013161815142715181017 = 10 19222317121013161815142715181017 - 10 = 19222317121013161815142715181017 19222317121013161815142715181017 - 19222317121013161815142715181017 = 10 19222317121013161815142715181017 - 141621161816101118141217131817191014 = 141621161816101118141217131817191013 19222317121013161815142715181017 - 141621161816101118141217131817191013 = 141621161816101118141217131817191014 141621161816101118141217131817191013 + 141621161816101118141217131817191013 = 19222317121013161815142715181016 141621161816101118141217131817191013 + 141621161816101118141217131817191014 = 19222317121013161815142715181017 141621161816101118141217131817191014 + 141621161816101118141217131817191013 = 19222317121013161815142715181017 141621161816101118141217131817191014 + 10 = 141621161816101118141217131817191014 10 + 141621161816101118141217131817191013 = 141621161816101118141217131817191013 141621161816101118141217131817191013 + 11 = 141621161816101118141217131817191014 11 + 141621161816101118141217131817191013 = 141621161816101118141217131817191014 141621161816101118141217131817191013 * 12 = 19222317121013161815142715181016 12 * 141621161816101118141217131817191013 = 19222317121013161815142715181016 141621161816101118141217131817191014 - 141621161816101118141217131817191014 = 10 141621161816101118141217131817191013 - 141621161816101118141217131817191013 = 10 141621161816101118141217131817191013 - 10 = 141621161816101118141217131817191013 141621161816101118141217131817191014 - 11 = 141621161816101118141217131817191013 141621161816101118141217131817191014 - 141621161816101118141217131817191013 = 11 141621161816101118141217131817191014 / 141621161816101118141217131817191014 = 11 141621161816101118141217131817191014 / 141621161816101118141217131817191013 = 11 141621161816101118141217131817191013 / 141621161816101118141217131817191014 = 10 141621161816101118141217131817191013 / 141621161816101118141217131817191013 = 11 141621161816101118141217131817191014 * 11 = 141621161816101118141217131817191014 11 * 141621161816101118141217131817191014 = 141621161816101118141217131817191014 141621161816101118141217131817191014 / 11 = 141621161816101118141217131817191014 11 / 141621161816101118141217131817191014 = 10 10 + 10 = 10 10 + 11 = 11 10 + 15 = 15 15 + 10 = 15 11 + 10 = 11 11 + 10 = 11 10 - 10 = 10 15 - 10 = 15 10 * 10 = 10 10 * 15 = 10 15 * 10 = 10 10 / 111213 = 10 I am getting consistently wrong answer. I generated the above testcases trying to make them as representative as possible (boundary conditions, etc). I am not sure how to test it further. Some guidline would be really appreciated.

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  • Why is file_get_contents() faster than using fsock_open()?

    - by eds
    In PHP, sometimes I want to send an HTTP request to a remote site just to look at the response headers, so I declare it all manually and use the fsock_open() function. However, this goes much slower than calling file_get_contents() with a remote URL (which loads the whole page content). Why is this? Is there a good alternative way to get just the response headers (to check if a page returns a 404 error, for example) that works as fast as file_get_contents()?

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  • run a function every x seconds in c++

    - by wyatt
    I'm trying to build a feed reader in C++, so I need the program to check for new feeds intermittently. However, the user needs still to be able to interact with the program, so the suggestion that I seem to keep finding, to have the system wait, doesn't work for me. Can anyone suggest a better solution, say a timer that runs in the background or something? Thanks, Charles

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  • Visual Studio Database Edition (DataDude) error numbers?

    - by E. Wilson
    Is there a list somewhere of all the output message numbers from VSDB Depolyments (VsDbCmd.exe from Visual Studio Database Edition)? For example, TSD01268 = normal action successful TSD01236 = missing referenced file (fail) TSD01237 = missing script file (fail) TSD00566 = deployment script generated to _ The way we are wrapping calls to VsDbCmd.exe means catching the %errorlevel% isn't always reliable so we also like to check the output for certain error conditions. It would be nice to see a consolidated list somewhere.

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  • Pattern for verifying authenticity of a request to WCF service

    - by fung
    I have a client app that makes calls to a WCF service. This app is on a public computer that's easily accessible and anyone can easily copy the .EXE and .CONFIG of my app into another machine and start using it. Is there a pattern where I can check if the request is coming only from an app on a computer I installed it on and not on one it has been copied to? Thanks in advance.

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  • Ndepend CQL to find methods of certain types using particular framework assembly

    - by icelava
    In order to check if types not derived from certain base classes are using a low-level framework assembly, the following query can be used. SELECT TYPES WHERE IsDirectlyUsing "ASSEMBLY:Framework.Data" AND !(DeriveFrom "App.BaseTypes.BusinessFacadeBase" OR DeriveFrom "App.BaseTypes.BusinessComponentBase" OR DeriveFrom "App.BaseTypes.DataAccessComponentBase") Now I wish to drill down further to see which methods from those classes are actually doing so. But the thing is if I change the query target from TYPES to METHODS then DeriveFrom is not going to apply. How can these criteria be preserved?

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  • Any way to change Phppgadmin view order of columns without changing underlying db

    - by nick
    Hey everyone, Is there any way to change the order of the columns phppgadmin views when browsing tables without having to change the underlying db? I have a few columns that I want seperated by heaps of unimportant ones and then a few more important ones at the end. The problem is that the important ones on the right are way of the screen so its hard to check visually if data has been inputed correctly. Cheers

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  • How to implement a feature: Post to a forum via email ?

    - by pixeline
    I'm investigating the development of a new forum and found via user feedback that posting to the forum via their email client would be a very useful feature. I'm wondering: is it possible? Can php check for an inbox folder and turn each email into a forum post? And if so, how to do that in a LAMP environment?

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  • GZipStream or DeflateStream class?

    - by Seventh Element
    The MSDN documentation tells me the following: The GZipStream class uses the gzip data format, which includes a cyclic redundancy check value for detecting data corruption. The gzip data format uses the same compression algorithm as the DeflateStream class. It seems GZipStream adds some extra data to the output (relative to DeflateStream). I'm wondering, in what type of a scenario would it be essential to use GZipStream and not DeflateStream?

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  • How to customize an installer's UI

    - by Kapil
    I am building an installer for my windows app and have done this through a setup/installer project in visual studio. I was wondering how to customize he UI of the finish dialog box? I want to add a couple of check-boxes and launch an app after the user closes the finish box. Is there a way to do this in Visual studio itself or does it require any other tools? If other tools are required then are any of them free? Thanks Kapil

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  • Android Persistent ContentObserver

    - by Lucas Stark
    Are content observers persistent in Android? If I create a content observer in an activity, will that observer continue to run until I remove the observer. Basically I am creating a service for SMS, where on receive and on send I post the SMS out to a web service, so I can check my messages with out having my phone. If the content observer is tied to the Activity's life, how can I create a ContentObserver that will always receive notifications on content:/sms/

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  • how to dispose a incoming email and then send some words back using googe-app-engine..

    - by zjm1126
    from google.appengine.api import mail i read the doc: mail.send_mail(sender="[email protected]", to="Albert Johnson <[email protected]>", subject="Your account has been approved", body=""" Dear Albert: Your example.com account has been approved. You can now visit http://www.example.com/ and sign in using your Google Account to access new features. Please let us know if you have any questions. The example.com Team """) and i know hwo to send a email using gae ,but how to check a email incoming, and then do something thanks

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  • Convert MYSQL Timestamp to time_t

    - by Kewley
    I'm writing a multi-threaded program that needs to be able to check if a row requires updating and act accordingly. I had problems using the built in date/time functions of MySql and so decided to just store the "lastupdate" timestamp as an integer in the table. However, I'm having problems converting this timestamp to time_t so that I can use the time functions with it. Any help is greatly appreciated.

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  • Checkout multiple revision of one file in CVS repository

    - by Andrew
    Hi, To checkout I use the following command CVSROOT="/home/projects/stuff/" cvs co mywork with the mywork directory I have text files as well as pictures, i.e., looks something like this - paper.tex - pic1.jpg - pic2.jpg etc. In particular, I am interested in checking out all the version of paper.tex over time. Is there a way how I can check all revisions of this file out at once? Or which command can I use to see when revision have been made to this particular file? many thanks for your help, Andrew

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