Search Results

Search found 19928 results on 798 pages for 'multiple constructors'.

Page 594/798 | < Previous Page | 590 591 592 593 594 595 596 597 598 599 600 601  | Next Page >

• changing validation group of button with javascript on client side

  - by haansi

  hi, In a form I have multiple group of controls which are grouped using validation group property. I want to assign validation group to asp.Button dynamically on client side using javascript on the base of item selected in drop down list. Here is JavaScript which I am using, but it is not working. It shows validation group undefined but actually a default group is defined. Please advice me. thanks <script type="text/JavaScript"> function NextClicked() { var _ddlStatus = document.getElementById("<%=ddl.ClientID%>"); var _selectedIndex = _ddlStatus.selectedIndex; var _btn = document.getElementById("<%=btnNext.ClientID%>"); alert(_btn.ValidationGroup); // here in messge it shows undefiend, yet I have defiend a group in button as default. if (_selectedIndex == 1) { _btn.ValidationGroup = "G1"; } else if (_selectedIndex == 2) { _btn.ValidationGroup = "G2"; } }

  Read the article

• Determining if a coordinate is on a line

  - by TGCBraun

  I´m coding a little app that allows the user to draw multiple shapes and then remove or resize them. It´s working perfectly on rectangles and ovals, but I´m having issues with lines. Here´s a method that I wrote to find if the clicked spot on the screen is part of a specific line: public boolean containsLocation(int x, int y) { int m = (getY2() - getY()) / (getX2() - getX()); int b = getY() - (m * getX()); if (y == (m * x) + b) { return true; } return false; I´m using the famous y = mx + b formula and replacing y and x to find if the clicked spot is part of the line. The problem is when I click on the screen to remove the line, it only works if I click on the very fist coordinate (x,y) where the line starts. Nothing happens when I click anywhere else along the line. Can anyone shed a light on what I´m doing wrong? Thanks a lot.

  Read the article

• Keep TabItems in a TabControl from repositioning?

  - by Kirn

  Hi everyone, In WPF, Is there a simple way to stop TabItems in a TabControl from being repositioned when the selected TabItem changes? So that clicking on a TabItem would simply display its contents, but not reposition the TabItems as it usually does (by moving the selected TabItem to the bottom row of tabs if it wasn't there already). Edit: To clarify, I do want the tabs to be displayed in multiple rows, I just don't want the tab headers to be repositioned when a TabItem from a row other than the bottom row is selected. I'd like the collection of headers to remain completely static, but for the contents of that TabItem to still be displayed when its header is clicked. Thanks!

  Read the article

• mod_rewrite: remove trailing slash (only one!)

  - by tshabalala

  Hello. I use mod_rewrite/.htaccess for pretty URLs. I'm using this condition/rule to eliminate trailing slashes (or rather: rewrite to the non-trailing-slash-URL, by a 301 redirect; I'm doing this to avoid duplicate content and because I like URLs with no trailing slashes better): RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{HTTP_HOST} !^\.localhost$ [NC] RewriteRule ^(.+)/$ http://%{HTTP_HOST}/$1 [R=301,L] Working well so far. Only drawback: it also forwards "multiple-trailing-slash"-URLs to non-trailing-slash-URLs. Example: http://example.tld/foo/bar////// forwards to http://example.tld/foo/bar while I only want http://example.tld/foo/bar/ to forward to http://example.tld/foo/bar. So, is it possible to only eliminate trailing slashes if it's actually just one trailing slash? Sorry if this is a somewhat annoying or weird question! Thanks.

  Read the article

• Better Java method Syntax? Return early or late? [closed]

  - by Gandalf

  Duplicate: Should a function have only one return statement? and Single return or multiple return statements? Often times you might have a method that checks numerous conditions and returns a status (lets say boolean for now). Is it better to define a flag, set it during the method, and return it at the end : boolean validate(DomainObject o) { boolean valid = false; if (o.property == x) { valid = true; } else if (o.property2 == y) { valid = true; } ... return valid; } or is it better/more correct to simply return once you know the method's outcome? boolean validate(DomainObject o) { if (o.property == x) { return true; } else if (o.property2 == y) { return true; } ... return false; } Now obviously there could be try/catch blocks and all other kinds of conditions, but I think the concept is clear. Opinions?

  Read the article

• Is an ArrayList automaticaly declared static in Java, if it is an instance variable?

  - by Alex

  I'm trying to do something like this: private class aClass { private ArrayList<String> idProd; aClass(ArrayList<String> prd) { this.idProd=new ArrayList<String>(prd); } public ArrayList<String> getIdProd() { return this.idProd; } } So if I have multiple instances of ArrayLIst<String> (st1 ,st2 ,st3) and I want to make new objects of aClass: { aClass obj1,obj2,obj3; obj1=new aClass(st1); obj2=new aClass(st2); obj3=new aClass(st3); } Will all of the aClass objects return st3 if I access the method getIdProd() for each of them(obj1..obj3)? Is an ArrayList as an instance variable automatically declared static?

  Read the article

• MPMoviePlayerController seems to make 2 calls for each movie

  - by user76328

  I seem to have an issue where an iphone app using the MPMoviePlayerController seems to make 2 calls to the server for each video it wants to play back. This occurs with iphone 3.x OS and libraries but not with iphone 2.x. I know that iphone does progressive download and will make multiple 206 requests, etc. but as far as our back end is concerned the player appears to make 2 separate sessions. This only appears to be an issue with iPhone native apps and not iphone videos played through safari. Additional info from apple: iPhone OS 3.0 added support for streaming audio and video over HTTP, and MPMoviePlayerController must validate the media before playback to determine if it is streaming content or progressively downloaded content. This is the delay you are experiencing. On a fast network, the delay should be minimized. Is this double check causing 2 sessions be created for each video request? Any one else seeing same issue? Is there a remedy?

  Read the article

• Java: BufferedImage from raw BMP file format data

  - by Victor

  Hello there. I've got BMP file's raw pixels table in byte[], it's structure is: (b g r) (b g r) ... (b g r) padding ... (b g r) (b g r) ... (b g r) padding Where r, g, b are byte each, padding is to round row length up to a multiple of 4 bytes. So, how can I create new BufferedImage from this raw data without copying, just using this raw data? I took a look at creating BufferedImage from DataBuffer, but I just didn't get it. Unfortunately ImageIO is not allowed in my situation.

  Read the article

• Address calling class

  - by Samuel

  I have an abstract class Moveable with the method abstract void move() which is extended by the class Bullet and the abstract class Character, and Character is extended by the class Survivor and the class Zombie. In Survivor and Bullet the move() method doesnt require any parameters while in the class Zombie the move() method depends on the actual position of the survivor. The survivor and multiple zombies are created in the class Gui. I wanted to access the survivor in Zombie - what's the best way of doing this? In Gui i wrote a method getSurvivor() but i don't see how to access this method in Zombie? I am aware that as a workaround i could just pass a [Survivor survivor] as parameter in move() and ignore it in Bullet and Survivor, but that feels so ... bad practice.

  Read the article

• Use 'let' in 'if' expression

  - by demas

  I need a function that works like this: foo :: Integer -> Integer -> [Integer] foo a b = do let result = [] let Coord x y = boo a b if x > 0 let result = result ++ [3] if y > 0 let result = result ++ [5] if x < a let result = result ++ [7] if y < b let result = result ++ [9] result I can not use the guards because the result can have more then one element. But as I see I can not use 'let' in the 'if' expression: all_possible_combinations.hs:41:14: parse error on input `let' How can I check multiple expressions and add new elements in the list? I search not only imperative solution, but the functional one.

  Read the article

• Regular Expression .net flavor

  - by user1440109

  Dont ask how this works but currently it does ("^\|(.?)\|*$")....kinda. This removes all extra pipes...part one....I have searched all over no anwser yet. I am using VB2011 beta...asp web form......vb coding though! I want to capture special character pipe (|) which is used to seperate words...i.e. car|truck|van|cycle problem is users lead with, trail with, use multiple, and use spaces before and after...i.e. |||car||truck | van || cycle. another example: george bush|micheal jordon|bill gates|steve jobs <-- this would be correct but when I do remove space it takes correct space out. so I want to get rid of whitespace leading, trailing, any space before | and space after | and only allow one pipe (|)....in between alphanumeric of course.

  Read the article

• Getting plane slices from array data

  - by umanga

  Greetings all, I read 3d grid data (from multiple TIF images) into a structure as follows : typedef struct VolumeData{ int nx; int ny; int nz; unsigned char *data; // size is nx*ny*nz } Now I want to get the plane slices from this 1-D grid data: eg: unsigned char* getXYPlaneStack(VolumeData *vol,int z); I could implement above function because the *data array stores image stack. But i am having difficult time implement along the other axes: unsigned char* getYZPlaneStack(VolumeData *vol,int x); and unsigned char* getXZPlaneStack(VolumeData *vol,int y); any easy algorithm for this? thanks in advance.

  Read the article

• ReaderWriterLockSlim question.

  - by Kamarey

  There are lots written about the ReaderWriterLockSlim class which allows multiple read and a single write. All of these (at least that I had found) tell how to use it without much explanation why and how it works. The standard code sample is: lock.EnterUpgradeableReadLock(); try { if (test if write is required) { lock.EnterWriteLock(); try { change the resourse here. } finally { lock.ExitWriteLock(); } } } finally { lock.ExitUpgradeableReadLock(); } The question is: if upgradeable lock permits only a single thread to enter its section, why I should call EnterWriteLock method within? What will happen if I don't? Or what will happen if instead of EnterUpgradeableReadLock I will call EnterWriteLock and will write to a resource without using upgradeable lock at all?

  Read the article

• Java Enum Newbie Question

  - by ikurtz

  i have a situation where i need the Checker enum below used in multiple classes: package Sartre.Connect4; public enum Checker { EMPTY, RED, YELLOW } so i put the Checker in a Checker.java file and then from the classes that need it i simply do the following: example: public Cell(){ currentCell = Checker.EMPTY; } example: public Cell(Checker checker){ currentCell = checker; } and the code compiles fine and runs fine also. so what is my question? well being new to Java i am just wondering if the way i use Checker without encapsulating it in a class is a sound implementation? it may be because of The enum declaration defines a class (called an enum type). as noted in Java docs enum tutorial page. thank you for your insight into this matter.

  Read the article

• rails 3, active record: any way to tell how many unique values match a "x LIKE ?" query

  - by jpwynn

  I have a query to find all the phone numbers that match a partial expression such as "ends with 234" @matchingphones = Calls.find :all, :conditions => [ "(thephonenumber LIKE ?)", "%234"] The same phone number might be in the database several times, and so might be returned multiple times by this query if it matches. What I need is to know is UNIQUE phone numbers the query returns. For example if the database contains 000-111-1234 * 000-111-3333 000-111-2234 * 000-111-1234 * 000-111-4444 the existing query will return the 3 records marked with * (eg returns one phone number -1234 twice since it's in the database twice) what I need is a query that returns just once instance of each match, in this case 000-111-1234 * 000-111-2234 *

  Read the article

• Can you reuse a mysql result set in PHP?

  - by MarathonStudios

  I have a result set I pull from a large database: $result = mysql_query($sql); I loop through this recordset once to pull specific bits of data and get averages using while($row = mysql_fetch_array($result)). Later in the page, I want to loop through this same recordset again and output everything - but because I used the recordset earlier, my second loop returns nothing. I finally hacked around this by looping through a second identical recordset ($result2 = mysql_query($sql);), but I hate to make the same SQL call twice. Any way I can loop through the same dataset multiple times?

  Read the article

• Text wrap in a <canvas> element

  - by Gwood

  I am trying to add text on an image using the <canvas> element. First the image is drawn and on the image the text is drawn. So far so good. But where I am facing a problem is that if the text is too long, it gets cut off in the start and end by the canvas. I don't plan to resize the canvas, but I was wondering how to wrap the long text into multiple lines so that all of it gets displayed. Can anyone point me at the right direction?

  Read the article

• Can in-memory SQLite databases be used concurrently?

  - by Kent Boogaart

  In order to prevent a SQLite in-memory database from being cleaned up, one must use the same connection to access the database. However, using the same connection causes SQLite to synchronize access to the database. Thus, if I have many threads performing reads against an in-memory database, it is slower on a multi-core machine than the exact same code running against a file-backed database. Is there any way to get the best of both worlds? That is, an in-memory database that permits multiple, concurrent calls to the database?

  Read the article

• Custom DataSource Extender

  - by Brian

  I dream of creating a control which works something like this: <asp:SqlDataSource id="dsFoo" runat="server" ConnectionString="<%$ ConnectionStrings:conn %>" SelectCommandType="StoredProcedure" SelectCommand="cmd_foo"> </asp:SqlDataSource> <Custom:DataViewSource id="dvFoo" runat="server" rowfilter="colid &gt; 10" datasourceid="dsFoo"> </Custom:DataViewSource> I can accomplish the same thing in the code behind by executing cmd_foo, loading the results into a DataTable, then loading them into a DataView with a RowFilter. The goal would be to have multiple DataViews for one DataSource with whatever special filters I wish to apply to the select portion of the DataSource. I could imagine extending this to be more powerful. I tried peaking at this and this but am a bit confused on a few points. Currently, my main issue is being unsure where to grab the output data of the DataSource so I can stick it into a DataTable.

  Read the article

• Check variable if explode-able in PHP

  - by ZaneDeFazio

  Not sure if there is a way to check a variable if it is explode-able or not... I have a database of city names some are one word cities and some are multiple word cities EX: Chicago, Los Angeles I keep getting an error when use "implode" when a city name is one word, so I tried using "count" and using an if statement... not having any luck $citi = explode(' ', $row['city']); $count = count($citi); if ($count > 1) { $city = implode('+', $citi); } else { $city = $citi; }

  Read the article

• Exporting winform data to .txt file

  - by EvanRyan

  I have a winform with two data grids, and multiple text boxes. I want to give the user the option to export this data to a text document in a location of their choice on their drive. I also want the text document to be pre-formatted, and the values from the text boxes and datagrids to be plugged in. Is it possible to pre-format a txt document using StreamWriter? And how to I go about giving the user the option of where to save this exported file?

  Read the article

• Should HTTP POST be discouraged?

  - by Tomas Sedovic

  Quoting from the CouchDB documentation: It is recommended that you avoid POST when possible, because proxies and other network intermediaries will occasionally resend POST requests, which can result in duplicate document creation. To my understanding, this should not be happening on the protocol level (a confused user armed with a doubleclick is a completely different story). What is the best course of action, then? Should we really try to avoid POST requests and replace them by PUT? I don't like that as they convey a different meaning. Should we anticipate this and protect the requests by unique IDs where we want to avoid accidental duplication? I don't like that either: it complicates the code and prevents situations where multiple identical posts may be desired.

  Read the article

• Can Uploadify send e-mail on complete?

  - by David

  Uploadify is a jQuery/Flash plugin for uploading multiple files. It's working great, except I can't figure out how trigger e-mail when all files are complete. If I try to add something like <% SendEmail(); %> to the onAllComplete parameter, it just sends the e-mail when the page loads. Is there a way to do this within the handler recommended here or from this post? Or is there some way to trigger a post in the onAllComplete parameter?

  Read the article

• How to limit data to users who own it without limiting admin users in CakePHP?

  - by cdburgess

  Currently I am writing an application where I have multiple users. They have data that should only be visible to them and not the other authenticated users in the system. I also have administrators who manage the system and have access to all of the information. What is the best way to limit users to their data without limiting admin users? Currently I am using a callback to limit the queries by user, but the admin will get the same limits. So I need to know a better way to do it. More importantly, the right way to do it. For example, I want the standard user to be able to see their user information only and be limited to CRUD operations on their information only. The admin, however, should be able to see ALL users and CRUD ALL user data. Any ideas?

  Read the article

• CakePHP repeats same queries

  - by Rytis

  I have a model structure: Category hasMany Product hasMany Stockitem belongsTo Warehouse, Manufacturer. I fetch data with this code, using containable to be able to filter deeper in the associated models: $this->Category->find('all', array( 'conditions' => array('Category.id' => $category_id), 'contain' => array( 'Product' => array( 'Stockitem' => array( 'conditions' => array('Stockitem.warehouse_id' => $warehouse_id), 'Warehouse', 'Manufacturer', ) ) ), ) ); Data structure is returned just fine, however, I get multiple repeating queries like, sometimes hundreds of such queries in a row, based on dataset. SELECT `Warehouse`.`id`, `Warehouse`.`title` FROM `beta_warehouses` AS `Warehouse` WHERE `Warehouse`.`id` = 2 Basically, when building data structure Cake is fetching data from mysql over and over again, for each row. We have datasets of several thousand rows, and I have a feeling that it's going to impact performance. Is it possible to make it cache results and not repeat same queries?

  Read the article

< Previous Page | 590 591 592 593 594 595 596 597 598 599 600 601  | Next Page >