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• <html:select> inside <logic:iterate>

  - by TPT Gin

  I have an itemList and for each item, a dropdown list of ratings is displayed. After user rates each item in itemList, i want to store those rates in an array. How can I do it? selectedRate below is of Integer type, and the code failed to solve the problem. <logic:iterate id="item" name="itemList"> <tr> <td> <html:select name="aForm" property="selectedRate"> <html:optionsCollection name="allRates" label="description" value="value" /> </html:select> </td> </tr> </logic:iterate>

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• LINQ-to-SQL: Searching against a CSV

  - by Peter Bridger

  I'm using LINQtoSQL and I want to return a list of matching records for a CSV contains a list of IDs to match. The following code is my starting point, having turned a CSV string in a string array, then into a generic list (which I thought LINQ would like) - but it doesn't: Error Error 22 Operator '==' cannot be applied to operands of type 'int' and 'System.Collections.Generic.List<int>' C:\Documents and Settings\....\Search.cs 41 42 C:\...\ Code DataContext db = new DataContext(); List<int> geographyList = new List<int>( Convert.ToInt32(geography.Split(',')) ); var geographyMatches = from cg in db.ContactGeographies where cg.GeographyId == geographyList select new { cg.ContactId }; Where do I go from here?

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• How to fill many texbox by using loop function in VBA

  - by melt

  Hi ! I made a user interface in VBA with many textbox. I read an excel sheet and I put all the value of this one in all the textbox of my user inteface. So the user can modify the values and then save it in the excel sheet. Because we can't name the textbox like array (textBox(1), textbox(2)....) this is hard to fill the textbox by using a loop function. I tried to use tag or tabindex property but I don't find the good way to proceed .... Is someone know an easy way to solve this !!! Thanks

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• Call to a member function query() on a non-object

  - by Randy Gonzalez

  Ok, this is so weird!!! I am running PHP Version 5.1.6 when I try and run the code below it gives a fatal error of an object that has not been instantiated. As soon as I un-comment this line of code //$cb_db = new cb_db(USER, PASSWORD, NAME, HOST); everything works. Even though I have declared the $cb_db object as global within in the method. Any help would be greatly appreciated. require_once ( ROOT_CB_CLASSES . 'db.php'); $cb_db = new cb_db(USER, PASSWORD, NAME, HOST); class cb_user { protected function find_by_sql( $sql ) { global $cb_db; //$cb_db = new cb_db(USER, PASSWORD, NAME, HOST); $result_set = $cb_db->query( $sql ); $object_array = array(); while( $row = $cb_db->fetch_array( $result_set ) ) { $object_array[] = self::instantiate( $row ); } return $object_array; } }

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• doctrine query() params?

  - by fayer

  i created a Doctrine_Query and executes it but i wanna know what params i can pass to it. $q = Doctrine_Query::create() ->select('cl.id, cl.name') ->from('ContactList cl'); $contactLists = $q->execute($params, $hydrationMode); from the api documentation: execute($params = array(), $hydrationMode = null) where do they tell me about the params? and also hydration mode. seems like i cannot find anything in the documentations. would be great if they had a reference for everything. thanks

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• What sort of object is this and how to use it?

  - by Gary

  What would be the correct name for this type of array? There are 3 main sections and 4 sub-parts consisting of "issuedTime" "text" "url" and "validToTime", how do you start to convert this to an object? If there was only 1 main section, it would be fairly simple to do however with 3 main parts and no identification for each main section has me scratching my head as where to start. Any advise appreciated. [{ "issuedTime":"7:13pm Sunday 13 June 2010", "text":"\nAmended 7:10pm.\n\nText text and more text\n", "url":"\/folder\/fc\/name.png", "validToTime":"12:00am Monday 14 June 2010" },{ "issuedTime":"8:33pm Sunday 13 June 2010", "text":"\nText and more text.\n", "url":"\/folder\/fc\/name.png", "validToTime":"12:00pm Monday 14 June 2010" },{ "issuedTime":"10:40am Sunday 13 June 2010", "text":"\nAnd even more text.", "url":"\/folder\/fc\/name.png", "validToTime":"12:00am Tuesday 15 June 2010" } ]

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• PHP - json_decode() returns null when using echo

  - by ShatouDev

  I am using the following script to decode a json. Although the var_dump($obj) returns result (similar to one in here Example #1), the echo line doesn't return any result, as if the $obj being null. <?php $clientJSONObject = file_get_contents('php://input'); $obj = json_decode($clientJSONObject, TRUE); var_dump($obj); // working. echo $obj; // returns nothing. echo $obj["carrier"]; // returns nothing. ?> var_dump output: array(2) { ["carrier"]=> string(8) "Etisalat" ["userLanguage"]=> string(2) "ar" }

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• Cannot redeclare class but there are no other classes with that name

  - by hsz

  Hello ! I am working right now with Zend Framework and I've created a Model_User_Row in app\models\User\Row.php. When I try to create an instance of that class in IndexController I get an error: Fatal error: Cannot redeclare class Model_User_Row in F:\Projekty\www\inz\app\models\User\Row.php on line 14 14th line is a close brace. <?php class Model_User_Row extends Zend_Db_Table_Row { /** * @return array */ public function toArray() { $res = parent::toArray(); unset($res['password']); return $res; } } // #14 In my project I have no other class called Model_User_Row. I am a bit confused - how to debug this case ?

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• PostGres - run a query in batches?

  - by CaffeineIV

  Is it possible to loop through a query so that if (for example) 500,000 rows are found, it'll return results for the first 10,000 and then rerun the query again? So, what I want to do is run a query and build an array, like this: $result = pg_query("SELECT * FROM myTable"); $i = 0; while($row = pg_fetch_array($result) ) { $myArray[$i]['id'] = $row['id']; $myArray[$i]['name'] = $row['name']; $i++; } But, I know that there will be several hundred thousand rows, so I wanted to do it in batches of like 10,000... 1- 9,999 and then 10,000 - 10,999 etc... The reason why is because I keep getting this error: Fatal error: Allowed memory size of 536870912 bytes exhausted (tried to allocate 3 bytes) Which, incidentally, I don't understand how 3 bytes could exhaust 512M... So, if that's something that I can just change, that'd be great, although, still might be better to do this in batches?

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• How are a session identifiers generated?

  - by Asaf R

  Most web applications depend on some kind of session with the user (for instance, to retain login status). The session id is kept as a cookie in the user's browser and sent with every request. To make it hard to guess the next user's session these session-ids need to be sparse and somewhat random. The also have to be unique. The question is - how to efficiently generate session ids that are sparse and unique? This question has a good answer for unique random numbers, but it seems not scalable for a large range of numbers, simply because the array will end up taking a lot of memory.

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• .NET Web Service Proxy is adding special characters in XML

  - by xkingpin

  My web service proxy seems to be adding special characters like "*" and "#" etc. within the xml nodes. My proxy created lists using arrays of objects. I am trying to create a generic list and then doing list.ToArray() to set the proxy MyProxyObject[] object. Is this the cause of the problem I am having? I plan on running fiddler on the request later but it is over SSL and I do not have access to the URL at the moment. Here is an example of the XML that is generated: <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> * <soap:Body> o I'm a little concerned because the special characters are even occuring before the array nodes

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• CakePHP: Ajax view problem (nothing in the view showing)

  - by Adim

  I created a function in my controller called addToPlaylist($songName). I wanted to add these song names to an array and then a session variable using an Ajax call. The first time i did this i got an error saying i do not have a template file to display in the chosen div ("add_to_playlist.ctp was missing"). I created this file and everything seemed to be working correctly. Basically I went to bed woke up and it is broken (it is possible I changed something before I went to bed). The problem now is that it does not show anything when i click the ajax link. when i click on the ajax link it seems to call the function but nothing displays in the view (except debug info) even when i delete the view (add_to_playlist.ctp) i get no errors, I just see debug info now.

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• How to convert List<int> to string[]?

  - by George Edison

  I need an easy way to convert a List<int> to a string array. I have: var the_list = new List<int>(); the_list.Add(1); the_list.Add(2); the_list.Add(3); string[] the_array = new string[the_list.Count]; for(var i = 0 ; i < the_array.Count; ++i) the_array[i] = the_list[i].ToString(); ...which looks to be very ugly to me. Is there an easier way? Note: I'm looking for an easier way - not necessarily a faster way.

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• how many color combinations in a 24 bit image

  - by numerical25

  I am reading a book and I am not sure if its a mistake or I am misunderstanding the quote. It reads... Nowadays every PC you can buy has hardware that can render images with at least 16.7 million individual colors. Rather than have an array with thousands of color entries, the images instead contain explicit color values for each pixel. A 24-bit display, of course, uses 24 bits, or 3 bytes per pixel, for color information. This gives 1 byte, or 256 distinct values each, for red, green, and blue. This is generally called true color, because 256^3 (16.7 million) He says 1 byte is equal to 256 distinct values. 1 byte = 8 bits. 8^2 bits = 64 distinct colors right ?? It's not adding up right to me. I know it might be something simple to understand, but I don't understand.

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• how many color combinations in a 24 bit image

  - by numerical25

  I am reading a book and I am not sure if its a mistake or I am misunderstanding the quote. It reads... Nowadays every PC you can buy has hardware that can render images with at least 16.7 million individual colors. Rather than have an array with thousands of color entries, the images instead contain explicit color values for each pixel. A 24-bit display, of course, uses 24 bits, or 3 bytes per pixel, for color information. This gives 1 byte, or 256 distinct values each, for red, green, and blue. This is generally called true color, because 256^3 (16.7 million) He says 1 byte is equal to 256 distinct values. 1 byte = 8 bits. 8^2 bits = 64 combinations of colors right ?? It's not adding up right to me. I know it might be something simple to understand, but I don't understand.

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• rewrite a function using only pointer increment/decrement

  - by Richard Nguyen

  can anyone help me rewrite the function i wrote below using only points and pointer increment/decrement? I dont have much experience with pointer so I dont know what to do. void reverse(char * s) { int i, l = strlen(s); char c; for(i = 0; i < (l >> 1); i++) { c = s[i]; s[i] = s[l - i - 1]; s[l - i - 1] = c; } } do not use pointer arithmetic or array notation. any help or hint on how to rewrite the function above is appriciated. Thanks!

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• What exactly does it mean when $_FILES is empty?

  - by Mike

  I am working on an upload script and when testing my error checks, I attempted to upload a 17MB TIFF file. When I do this the $_FILES array is empty. The script works fine for what I need it to do, which is to upload JPEG files. My solution is to test if $_FILES is empty or not before continuing with the upload script. Can anybody explain why $_FILES is empty when a TIFF is attempted to be uploaded? Is my solution, to check if $_FILES is empty or not, an okay one?

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• using KVO to update an NSTableView filtered by an NSPredicate

  - by KingRufus

  My UI is not updating when I expect it to. The application displays "projects" using a view similar to iTunes -- a source list on the left lets you filter a list (NSTableView) on the right. My filters update properly when they are examining any simple field (like name, a string), but not for arrays (like tags). I'm removing a tag from one of my objects (from an NSMutableArray field called "tags") and I expect it to disappear from the list because it no longer matches the predicate that is bound to my table's NSArrayController. ProjectBrowser.mm: self.filter = NSPredicate* srcPredicate = [NSPredicate predicateWithFormat:@"%@ IN %K", selectedTag, @"tags"]; Project.mm: [self willChangeValueForKey:@"tags"]; [tags removeAllObjects]; [self didChangeValueForKey:@"tags"]; I've also tried this, but the result is the same: [[self mutableArrayValueForKey:@"tags"] removeAllObjects]; Interface Builder setup: a ProjectBrowser object is the XIB's File Owner an NSArrayController (Project Controller) has its Content Array bound to "File's Owner".projects Project Controller's filter predicate is bound to "File's Owner".filter NSTableView's column is bound to "Project Controller".name

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• In .NET which loop runs faster for or foreach

  - by Binoj Antony

  In c#/VB.NET/.NET which loop runs faster for or foreach? Ever since I read that for loop works faster than foreach a long time ago I assumed it stood true for all collections, generic collection all arrays etc. I scoured google and found few articles but most of them are inconclusive (read comments on the articles) and open ended. What would be ideal is to have each scenarios listed and the best solution for the same e.g: (just example of how it should be) for iterating an array of 1000+ strings - for is better than foreach for iterating over IList (non generic) strings - foreach is better than for Few references found on the web for the same: Original grand old article by Emmanuel Schanzer CodeProject FOREACH Vs. FOR Blog - To foreach or not to foreach that is the question asp.net forum - NET 1.1 C# for vs foreach [Edit] Apart from the readability aspect of it I am really interested in facts and figures, there are applications where the last mile of performance optimization squeezed do matter.

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• Exporting DataTable using FileHelpers

  - by Dat

  I want to export the contents of a DataTable to a text delimited file using FileHelpers, is this possible? Here is what I have so far: // dt is a DataTable with Rows in it DelimitedClassBuilder cb = new DelimitedClassBuilder("MyClassName", "|", dt); Type t = cb.CreateRecordClass(); FileHelperEngine engine = new FileHelperEngine(t); I have to convert the contents of dt to an array of type "MyClassName" but I'm not sure how to do that? I know there is a FileDataLink class but none of them work with DataTable (or even a DataSet).

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• HASHREF in Perl

  - by Uri

  I'm trying to decrypt a Perl code which I'm not familiar with, somehow related to HashRef. I'm using Amazon::S3, but my question is a general Perl question. See the code below: use Amazon::S3; my $s3 = Amazon::S3-new( ... ); my $response = $s3-buckets; Documentation (here) sais, about s3-buckets: Returns undef on error, else HASHREF of results The following line is working for me, but I don't understand why: for $b in ( @ { $response-{buckets} } ) { print "bucket: " . $b-bucket . "\n"; } I'm buzzled by each operator on the first line. What type exactly are $response, $respone-{bucket}. Looks like the expression within the 'for' is an array, but I don't understand this syntax: @{ ... }?

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• HTML + javascript mouse over, mouseout, onclick not working in firefox.

  - by lucky

  Hello Everyone, My question is to get onMouseover,onMouseout,onMousedown,onClick on a table row. For which i am calling javascript userdefined functions. onMouseover --- Background color should change. onMouseout --- Reset to original color onClick --- First column checkbox/radio button should be set and background color should change onMousedown --- background color should change. My code in html is:- <tr onMouseOver="hover(this)" onMouseOut="hover_out(this)" onMouseDown="get_first_state(this)" onClick="checkit(this)" > and the methods in javascripts are:- var first_state = false; var oldcol = '#ffffff'; var oldcol_cellarray = new Array(); function hover(element) { if (! element) element = this; while (element.tagName != 'TR') { element = element.parentNode; } if (element.style.fontWeight != 'bold') { for (var i = 0; i<element.cells.length; i++) { if (element.cells[i].className != "no_hover") { oldcol_cellarray[i] = element.cells[i].style.backgroundColor; element.cells[i].style.backgroundColor='#e6f6f6'; } } } } // ----------------------------------------------------------------------------------------------- function hover_out(element) { if (! element) element = this; while (element.tagName != 'TR') { element = element.parentNode; } if (element.style.fontWeight != 'bold') { for (var i = 0; i<element.cells.length; i++) { if (element.cells[i].className != "no_hover") { if (typeof oldcol_cellarray != undefined) { element.cells[i].style.backgroundColor=oldcol_cellarray[i]; } else { element.cells[i].style.backgroundColor='#ffffff'; } //var oldcol_cellarray = new Array(); } } } } // ----------------------------------------------------------------------------------------------- function get_first_state(element) { while (element.tagName != 'TR') { element = element.parentNode; } first_state = element.cells[0].firstChild.checked; } // ----------------------------------------------------------------------------------------------- function checkit (element) { while (element.tagName != 'TR') { element = element.parentNode; } if (element.cells[0].firstChild.type == 'radio') { var typ = 0; } else if (element.cells[0].firstChild.type == 'checkbox') { typ = 1; } if (element.cells[0].firstChild.checked == true && typ == 1) { if (element.cells[0].firstChild.checked == first_state) { element.cells[0].firstChild.checked = false; } set_rowstyle(element, element.cells[0].firstChild.checked); } else { if (typ == 0 || element.cells[0].firstChild.checked == first_state) { element.cells[0].firstChild.checked = true; } set_rowstyle(element, element.cells[0].firstChild.checked); } if (typ == 0) { var table = element.parentNode; if (table.tagName != "TABLE") { table = table.parentNode; } if (table.tagName == "TABLE") { table=table.tBodies[0].rows; //var table = document.getElementById("js_tb").tBodies[0].rows; for (var i = 1; i< table.length; i++) { if (table[i].cells[0].firstChild.checked == true && table[i] != element) { table[i].cells[0].firstChild.checked = false; } if (table[i].cells[0].firstChild.checked == false) { set_rowstyle(table[i], false); } } } } } function set_rowstyle(r, on) { if (on == true) { for (var i =0; i < r.cells.length; i++) { r.style.fontWeight = 'bold'; r.cells[i].style.backgroundColor = '#f2f2c2'; } } else { for ( i =0; i < r.cells.length; i++) { r.style.fontWeight = 'normal'; r.cells[i].style.backgroundColor = '#ffffff'; } } } It is working as expected in IE. But coming to firefox i am surprised on seeing the output after so much of coding. In Firefox:-- onMouseOver is working as expected. color change of that particular row. onClick -- Setting the background color permenantly..eventhough i do onmouseover on different rows. the clicked previous row color is not reset to white. -- not as expected onclick on 2 rows..the background of both the rows is set..Only the latest row color should be set. other rows that are selected before should be set back..not as expected i.e if i click on all the rows..background color of everything is changed... Eventhough i click on the row. First column i.e radio button or checkbox is not set.. Please help me to solve this issue in firefox. Do let me know where my code needs to be changed... Thanks in advance!!

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• Add objects to NSDictionaryController

  - by kaile

  I have an NSTableView which is bound to an NSDictionaryController. I have set this and the content dictionary through the interface builder. The question I have is, how do I add objects to the dictionary in a manner that the controller will see it automatically and display it in the table. I've seen in examples about NSArrayController that you add the new objects through the controller rather than the actual array so the controller sees the change. However, I don't see a similar way of doing this with the dictionarycontroller... Thanks for the help.

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• How to show all the tables from multiple databases

  - by saorabh

  How to select all the tables from multiple databases in mySql.. I am doing the following steps but not able to achive the goal. <?php $a = "SHOW DATABASES"; $da = $wpdb->get_results($a); foreach($da as $k){ echo '<pre>'; print_r ($k->Database);//prints all the available databases echo '</pre>'; $nq = "USE $k->Database";//trying to select the individual database $newda = $wpdb->get_results($nq); $alld = "SELECT * FROM $k->Database"; $td = $wpdb->get_results($alld); var_dump($td);//returns empty array } ?> Please Help me

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• Using a singleton database class in functions and multiple scripts(PHP) - best use methods

  - by dscher

  I have a singleton db connection which I get with: $dbConnect = myDatabase::getInstance(); which is easy enough. My question is what is the least rhetorical and legitimate way of using this connection in functions and classes? It seems silly to have to declare the variable global, pass it into every single function, and/or recreate this variable within every function. Is there another answer for this? Obviously I'm a noob and I can work my way around this problem 10 different ways, none of which is really attractive to me. It would be a lot easier if I could have that $dbConnect variable accessible in any function without needing to declare it global or pass it in. I do know I can add the variable to the $_SERVER array...is there something wrong with doing this? It seems somewhat inappropriate to me. Another quick question: Is it bad practice to do this: $result = myDatabase::getInstance()-query($query); from directly within a function?

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