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  • Fibonnaci Sequence fast implementation

    - by user2947615
    I have written this function in Scala to calculate the fibonacci number given a particular index n: def fibonacci(n: Long): Long = { if(n <= 1) n else fibonacci(n - 1) + fibonacci(n - 2) } However it is not efficient when calculating with large indexes. Therefore I need to implement a function using a tuple and this function should return two consecutive values as the result. Can somebody give me any hints about this? I have never used Scala before. Thanks!

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  • Return a result in the original page.

    - by Josh
    When the user submit his data, I take him to a different page where plenty of calculations are made, then I redirect him to the original page with a simple : <?php header("Location:http://mysite.com/index.php"); The problem is I need all the variables and results to be show in this page, but they are obviously stored in the other one, so I need your help please :) ! Thank you for reading this !

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  • Listfield layout question - blackberry

    - by Kai
    I'm having an interesting anomaly when displaying a listfield on the blackberry simulator: The top item is the height of a single line of text (about 12 pixels) while the rest are fine. Does anyone know why only the top item is being drawn this way? Also, when I add an empty venue in position 0, it still displays the first actual venue this way (item in position 1). Not sure what to do. Thanks for any help. The layout looks like this: ----------------------------------- | *part of image* | title | ----------------------------------- | | title | | * full image * | address | | | city, zip | ----------------------------------- The object is called like so: listField = new ListField( venueList.size() ); listField.setCallback( this ); listField.setSelectedIndex(-1); _middle.add( listField ); Here is the drawListRow code: public void drawListRow( ListField listField, Graphics graphics, int index, int y, int width ) { listField.setRowHeight(90); Hashtable item = (Hashtable) venueList.elementAt( index ); String venue_name = (String) item.get("name"); String image_url = (String) item.get("image_url"); String address = (String) item.get("address"); String city = (String) item.get("city"); String zip = (String) item.get("zip"); EncodedImage img = null; try { String filename = image_url.substring( image_url.indexOf("crop/") + 5, image_url.length() ); FileConnection fconn = (FileConnection) Connector.open( "file:///SDCard/Blackberry/project1/" + filename, Connector.READ); if ( !fconn.exists() ) { } else { InputStream input = fconn.openInputStream(); byte[] data = new byte[(int)fconn.fileSize()]; input.read(data); input.close(); if(data.length > 0) { EncodedImage rawimg = EncodedImage.createEncodedImage(data, 0, data.length); int dw = Fixed32.toFP(Display.getWidth()); int iw = Fixed32.toFP(rawimg.getWidth()); int sf = Fixed32.div(iw, dw); img = rawimg.scaleImage32(sf * 4, sf * 4); } else { } } } catch(IOException ef) { } graphics.drawText( venue_name, 140, y, 0, width ); graphics.drawText( address, 140, y + 15, 0, width ); graphics.drawText( city + ", " + zip, 140, y + 30, 0, width ); if(img != null) { graphics.drawImage(0, y, img.getWidth(), img.getHeight(), img, 0, 0, 0); } }

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  • htaccess url rewrite,remove querystring and file extension

    - by Miranda
    my current url is something like: http://something.somedomain.com/about_us/profile.php?tab1=about_us a more complicated on is: http://something.somedomain.com/exchange_hosting/feature/outlook_web_access.php?tab1=exchange_hosting&tab2=feature&tab3=outlook_web_access i want to make them shorter: http://something.somedomain.com/about_us/profile http://something.somedomain.com/exchange_hosting/feature/outlook_web_access my .htaccess ################################# # Directory Indexes # ################################# DirectoryIndex index.php ######################################### # REWRITE RULES # ######################################### RewriteEngine On RewriteBase / Options +FollowSymlinks <IfModule mod_rewrite.c> #not a file RewriteCond %{REQUEST_FILENAME} !-f #not a dir RewriteCond %{REQUEST_FILENAME} !-d #this dosen't work #RewriteRule ^([a-zA-Z0-9_-]+)/([a-zA-Z0-9_-]+)$ /$1.php?tab1=$0&tab2=$1 </IfModule> # END #

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  • CSS working fine in firefox but not displaying properly on IE?

    - by Karthik
    I have the desired effect on firefox, which is to display like this: _________ | title |__________________ | | | | | | | content here | | | | | | | | | ____________________________ but it simply displays a deformed rectangle in IE What could be the possible issues? EDIT: This is the border of a webpage. The title is on the smaller box on top of the bigger one. Here is the link to the webpage: http://picasso.shsu.edu/~kkk005/index.php?view=ArtworkCommentary&OPPID=OPP.34:019 This does not display properly on IE

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  • mod_rewrite browser trying to get content from non-existant dir

    - by humgl
    I have my mod_rewrite set up so that it redirects all requests that aren't targeting existing files or directories to index.php?req=* where * is the request. Works all fine but when I send the browser to something like this: http://myurl/A/B/C The browser tries to find all images, stylesheets in the non-existing folder C. How can I make the browser to look in / instead of the 'virtual' directory? Do I have to put an absolute path everywhere?

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  • How to add a view for the json result in asp.net mvc?

    - by Pandiya Chendur
    I returned json result from a controller but how can i add a view that uses this json result.. public class MaterialsController : Controller { ConstructionRepository consRepository = new ConstructionRepository(); public JsonResult Index() { var materials = consRepository.FindAllMaterials().AsQueryable(); return Json(materials); } } How to add a view to this? Any suggestion...

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  • Can I write this JQuery statement cleaner?

    - by Polaris878
    Hello, So I have the following: var box = $(".MyCheckBox"); if (box[0].checked) { // Do something } else { // Do something else } Is there a better way of doing this using filters or something? I know I can go: $(".MyCheckBox") .filter(function(index) { return this.checked; }) .each(function() { // do something }); But I need to do something in the else statement... easier way of doing this? Thanks!

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  • php functions within functions.

    - by Adamski
    Hi all, ihave created a simple project to help me get to grips with php and mysql, but have run into a minor issue, i have a working solution but would like to understand why i cannot run this code successfully this way, ill explain: i have a function, function fetch_all_movies(){ global $connection; $query = 'select distinct * FROM `'.TABLE_MOVIE.'` ORDER BY movieName ASC'; $stmt = mysqli_prepare($connection,$query); mysqli_execute($stmt); mysqli_stmt_bind_result($stmt,$id,$name,$genre,$date,$year); while(mysqli_stmt_fetch($stmt)){ $editUrl = "index.php?a=editMovie&movieId=".$id.""; $delUrl = "index.php?a=delMovie&movieId=".$id.""; echo "<tr><td>".$id."</td><td>".$name."</td><td>".$date."</td><td>".get_actors($id)."</td><td><a href=\"".$editUrl."\">Edit</a> | <a href=\"".$delUrl."\">Delete</a></td></tr>"; } } this fetches all the movies in my db, then i wish to get the count of actors for each film, so i pass in the get_actors($id) function which gets the movie id and then gives me the count of how many actors are realted to a film. here is the function for that: function get_actors($movieId){ global $connection; $query = 'SELECT DISTINCT COUNT(*) FROM `'.TABLE_ACTORS.'` WHERE movieId = "'.$movieId.'"'; $result = mysqli_query($connection,$query); $row = mysqli_fetch_array($result); return $row[0]; } the functions both work perfect when called separately, i just would like to understand when i pass the function inside a function i get this warning: Warning: mysqli_fetch_array() expects parameter 1 to be mysqli_result, boolean given in /Applications/MAMP/htdocs/movie_db/includes/functions.inc.php on line 287 could anyone help me understand why? many thanks.

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  • some qeustions about Vector in STL

    - by skydoor
    I have some questions about vector in STL to clarify..... 1 Where are the objects in vector allocated? heap? 2 does vector have boundary check? If the index out of the boundary, what error will happen? 3 Why array is faster than vector? 4 Is there any case in which vector is not applicable but array is a must?

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  • undefined method `parameterize' for nil:NilClass

    - by Senthil
    I've been trying to do SEO friendly urls, and managed to get it work, but when I call index action on blogs, I get a weird "undefined method `parameterize' for nil:NilClass." The method works when using show method. def to_s title end def to_param "#{id}-#{to_s.parameterize}" end

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  • Hash Table question [closed]

    - by Fatimah
    I need your help to solve this program ... Implement a separate chaining hash table that stores strings. You’ll need a hash function that converts string into an index number. Assume the strings will be lowercase words, so 26 characters will suffice.

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  • Apache Mod Rewrite question

    - by ezlem
    I am not really familiar with apache modrewrite I have url parameters such as {domain}/index.php?blog=5 i simply want to make it {domain}/home.php?client=5 Is it a task as simple as it sounds and can anyone help ?

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  • MySQL: LOAD DATA reclaim disk space after delete

    - by Michael
    I have a DB schema composed of MYISAM tables, i am interested to delete old records from time to time from some of the tables. I know that delete does not reclaim the memory space, but as i found in a description of DELETE command, inserts may reuse the space deleted In MyISAM tables, deleted rows are maintained in a linked list and subsequent INSERT operations reuse old row positions. I am interested if LOAD DATA command also reuses the deleted space? UPDATE I am also interested how the index space reclaimed?

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  • O(log n) algorithm for merging lists and computing rank?

    - by Eternal Learner
    Given two sorted lists, each containing n real numbers, is there a O(log?n) time algorithm to compute the element of rank i (where i coresponds to index in increasing order) in the union of the two lists, assuming the elements of the two lists are distinct? I can think of using a Merge procedure to merge the 2 lists and then find the A[i] element in constant time. But the Merge would take O(n) time. How do we solve it in O(log n) time?

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  • where can I get these kind of exercises to solve?

    - by flash
    Recently I did a Java programming exercise successfully which was sent by a recruiting firm, The problem statement goes like this 'There are two text files FI(records abt files and directory information) and FS(containing blocks of data) which represent a file Index and file System respectively and I was supposed to write a static read method in a class which will read the file from the FS depending upon the path string provided using FI' My question is where can I get these kind of exercises to solve, the complexity should be above average to tough.

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  • What's the right Java generic for a collection of elements with unique addressable indices?

    - by Rocreex
    I'm on my way to programming a database application and in our course we are told to implement a library of elements using one of the Java Collections. Each of the elements has a unique ID with which it's supposed to be addressed. Now I am wondering how this can be done. I though about using a ListArray but this won't work because the only way of addressing List elements is through the index which you can't control. Do you have some advice for me?

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  • mod_rewrite htaccess redirect on specific request

    - by John
    is there a way to make mod_rewrite redirect all urls contain the following request: ?do=page&f=* to a specific page? for example: http://example.com/index.php?do=page&f=2 http://example.com/index2.php?do=page&f=4 http://example.com/page.php?do=page&f=22 to: http://example.com/custom.php

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  • url.rewrite-once with Kohana and with urls

    - by mike clagg
    currently I have this setup in our simple-hosts.conf: url.rewrite-once = ( ".*.(js|ico|gif|jpg|png|css|php|htm)(?.*)?$" = "$0", "/slapi" = "/slapi/index.php" ) Works great, except the above fails when I have a dot in the query string: ?url=http://google.com My regexpy is not 1337

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  • Retrieving substring of a bound value

    - by shivesh
    I am binding some data to control, but want to limit the number of character of a specific field to a 30 first characters. I want to do it, if it's possible, on aspx page. I tried this: Text='<%# String.Format("{0}", Eval("Title")).Substring(0,30) %> ' But got this error: Index and length must refer to a location within the string. Parameter name: length

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