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• jquery background image rotating script doesn't work

  - by Catfish

  I'm writing this script to rotate a background Image every 3 seconds but it doesn't work at all and i'm stumped as to why not. $(document).ready(function() { var inc = 0; var bgImages = new Array(); bgImages.push("../Images/backgroundDog-small.jpg"); bgImages.push("../Images/backgroundDog1-small.jpg"); bgImages.push("../Images/backgroundDog2-small.jpg"); bgImages.push("../Images/backgroundDog3-small.jpg"); setInterval(change, 3000); function change() { //if we're not at the end of the array if (inc < (bgImages.length)) { var image = bgImages[inc]; $('body').css('backgroundImage', image); console.log(image); inc++; //reset the counter inc and go through the array again } else { inc = 0; } } });

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• vectorized approach to binning with numpy/scipy in Python

  - by user248237

  I am binning a 2d array (x by y) in Python into the bins of its x value (given in "bins"), using np.digitize: elements_to_bins = digitize(vals, bins) where "vals" is a 2d array, i.e.: vals = array([[1, v1], [2, v2], ...]). elements_to_bins just says what bin each element falls into. What I then want to do is get a list whose length is the number of bins in "bins", and each element returns the y-dimension of "vals" that falls into that bin. I do it this way right now: points_by_bins = [] for curr_bin in range(min(elements_to_bins), max(elements_to_bins) + 1): curr_indx = where(elements_to_bins == curr_bin)[0] curr_bin_vals = vals[:, curr_indx] points_by_bins.append(curr_bin_vals) is there a more elegant/simpler way to do this? All I need is a list of of lists of the y-values that fall into each bin. thanks.

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• Image manipulation with JQuery and PHP

  - by robertdd

  I want to do some kind of image editor, after I upload more images I want to make a list with all the thumbnails! After, I want to be able to click on one thumb and rotate, duplicate, drag and drop (to change positions of the images), and delete the image. I want all the images to be in a php array. If an image is deleted I want to delete the row from array too. If a image is drag-and-dropped I want to change the position in the array too. Ok, after the user uploads all the images and modifies some of them, how can I make a DONE button to save the positions of the images? For this small project how do you suggest I save the images? (to make a table in mysql and store the names of the images in the database depending on the session id? depending on the IP?) Any suggestions are welcome!

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• Doxygen - <X>:1: warning: return type of member X is not documented

  - by Matt Clarkson

  /*! \var GLOBAL_VAR * \brief This is my global initialisation array for MY_STRUCT */ MY_STRUCT GLOBAL_VAR = { 1, 3, 2, 1, }; I get the following error: <GLOBAL_VAR>:1: warning: return type of member GLOBAL_VAR is not documented But this shouldn't have any return type?! If I do either of the following the warning goes away: /*! \var GLOBAL_VAR * \brief This is my global initialisation array for MY_STRUCT * \returns */ MY_STRUCT GLOBAL_VAR = { 1, 3, 2, 1, }; Or: /*! \var GLOBAL_VAR * \brief This is my global initialisation array for MY_STRUCT */ MY_STRUCT GLOBAL_VAR = 3; The isn't very useful as it puts a "Returns" into my HTML documentation and the second one breaks my code! How do I remove this warning? Thanks Matt

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• Facebook feed publishing form not appearing

  - by Arkid

  I am trying to publish feed through feed form but the feed form doesnot appear. However, the update happens and it happens twice. Also it says "Error thrown by application" in the dialog box. $message = "has invited you for all for hanging out wid him...the details being.."; //$facebook->api_client->stream_publish($message,null,null,$user,$user); $attachment = array( 'name' => 'Name', 'href' => 'http://www.facebook.com', 'caption' => 'Caption', 'description' => 'Description'); $attachment = json_encode($attachment); $action_links = array(array( 'text' => 'Action Link', 'href' => 'http://www.facebook.com')); $action_links = json_encode($action_links); $facebook->api_client->stream_publish($message, $attachment, $action_links); Please tell me what can be done here?

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• NSMutableArray EXC_BAD_EXCESS SIGBUS

  - by sujyanarayan

  Hi, I've the following code which causes crashes after sometime as i've set the below code in a timer:- CGImageRef cgImage = UIGetScreenImage(); [array addObject:(id)cgImage]; CGImageRelease(cgImage); Where initiallly i've declared "array" as: array = [[NSMutableArray alloc] init]; The timer goes well till 10 seconds as timer is of 1/10 seconds after 10 seconds it crashes. I think the application crashes because of EXC_BAD_EXCESS but dont know how to solve. Can Anybody help in solving the problem? Thanks in Adv.

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• explanation about prototype.js function binding code

  - by resopollution

  From: http://ejohn.org/apps/learn/#2 Function.prototype.bind = function(){ var fn = this, args = Array.prototype.slice.call(arguments), object = args.shift(); return function(){ return fn.apply(object, args.concat(Array.prototype.slice.call(arguments))); }; }; Can anyone tell me why the second return is necessary (before fn.apply)? Also, can anyone explain why args.concat is necessary? Why wouldn't it be re-written as: fn.apply(object, args) instead of return fn.apply(object, args.concat(Array.prototype.slice.call(arguments)));

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• Any way to make this working dual core in C#?

  - by Frantisek

  Hi, I got a piece of code that loops through the array and looks for the similar and same strings in it - marking it whether it's unique or not. loop X array for I ( loop X array for Y ( If X is prefix of Y do. else if x is same length as Y and it's prefix do something. ) Here is the code to finilize everything for I and corresponding (found/not found) matches in Y. ) I'd like to make this for dual-core to multithread it. To my knowledge it is not possible, but it's highly probable that you may have some idea.

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• Adding an IList item to a particular index number

  - by Dr. Zim

  Our Client's database returns a set of prices in an array, but they sometimes don't include all prices, i.e., they have missing elements in their array. We return what we find as an IList, which works great when we retrieve content from the database. However, we are having difficulties setting the elements in the proper position in the array. Is it possible to create an IList then add an element at a particular position in the IList? var myList = new List<Model>(); var myModel = new Model(); myList[3] = myModel; // Something like what we would want to do

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• RoR function help

  - by Aviatrix

  Can someone write a function for me on RoR , i simply don't have the time to study Ruby and RoR for just one time use. The function should do the following things : 1) have an array with variables 2) for each variable in the array execute 4-5 other functions get the results and insert them in another table in the same DB table name - refined CityName varchar Subdomain varchar = the varriable in the array Nearby text State varchar ZipCodes text AreaCodes text Some of the functions return arrays. i will really apreciate the help ! Thanks in advance.

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• Drupal - how to register a MENU_CALLBACK that is accessable to all users(even anonymous ones)?

  - by rubayeet

  I'm trying to learn Drupal 6. I want to register the path '/topic' to a MENU_CALLBACK using hook_menu(). Here's what I have: function mymodule_menu() { $items = array() $items['foo'] = array( 'page callback' => 'show_page_foo', 'access callback' => 'user_access', 'access arguements' => array('access foo content'), 'type' => MENU_CALLBACK ); } function show_page_foo() { //show foo page } This works fine for a logged in user. But when I visit the path as an anonymous user it shows 'Access Denied' message. What must be the 'access callback' and 'access arguments' values to have this accessible to all visitors? I remember I made this work by simply saying 'access' => TRUE in Drupal 5. No longer works in Drupal 6.

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• Apply limit in mapreduce function in php?

  - by Rohan Kumar

  How to apply limit in php, mongodb when using mapreduce function? I tried this $cmd=array(// codition array "mapreduce" => "user", "map" => $map, "reduce" => $reduce, "out" => array("inline" => 1), "limit"=>2 ); $db=connect(); $query = $db->command($cmd);// run command But its not working it gives 2 documents.I can't use limit on sub documents. If I have 100's of sub documents and then I want paging in sub documents.Then it fails.Is it possible to apply limit on sub documents?

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• Deallocating NSMutableArray of custom objects

  - by Dave

  I need help with deallocation of my NSMutableArray of custom objects. I need to retain the array and so I have added a property in .h and I release it in dealloc in .m file. When I add objects to the array, I do the following: myarray = [[NSMutableArray alloc] init]; [myarray addObject:[[mycustomObject alloc]initWithObject:obj1]]; [myarray addObject:[[mycustomObject alloc]initWithObject:obj2]]; Now, I don't know how to release mycustomobject. If I do the following: [myarray addObject:[[[mycustomObject alloc]initWithObject:obj1] autorelease]; I run in to problems when I access the array later. Please advice.

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• c# application and configuration settings

  - by Maks

  Hi, I never used Settings class before but I found some articles on CodeProject which I'm currently reading (for example http://www.codeproject.com/KB/cs/PropertiesSettings.aspx) but so far I didn't see how to save string array for getting it after application is started next time. For example my application has several FileSystemWatcher instances, with each instance several other directories are connected (for example one FSW instance is monitoring one directory for a change and when it happens it copies some file to several other directories), so I would have one string array with watched paths representing FSW instances, and string array for each of those paths, representing directories that are affected. My question is, what should I use (Settings class or something else), and how should I use that for storing application configuration that is variable number of string arrays? Emphasize is on something I could use very soon as I don't have too much time to make custom class (but would have to if I cannot find solution) or dig into some obscure hacks. Any tutorial link, code snippet would be very helpful. Thanks.

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• Typed Arrays in Gecko 2: Float32Array concatenation and expansion.

  - by janesconference

  Hi all, I'm a bit confused with Javascript Typed Arrays. What I have several *Float32Array*s, that have no concat method. I'd like to concatenate them all inside another Float32Array, but: as I said before, there is no concatenation method if I try to write past the array length, the array is not expanded (aka this won't work - please note that event.frameBuffer and buffer are both Float32Array and that I don't know what the final length of my buffer will be): var length_now = buffer.length; for (var i = 0; i < event.frameBuffer.length; i += 1) { buffer [length_now + i] = event.frameBuffer[i]; } The only solution I found is to copy the Float32Array in a regular array, that's definitely not what I want. How would you do, stackoverflowers?

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• Overwrite Content in PHP fwrite()

  - by Shahmir Javaid

  Is there any way you can overwrite a line in PHP. let me be a little more clearer using examples. My array array{ [DEVICE] => eth0, [IPADDR] => 192.168.0.2, [NETMASK] => 255.255.255.0, [NETWORK] => 192.168.0.0, [BROADCAST] => 255.255.255.255, [GATEWAY] => 192.168.0.1, [ONBOOT] => no } File im overwriting DEVICE=eth0 IPADDR=192.168.200.2 NETMASK=255.255.255.0 NETWORK=192.168.200.0 BROADCAST=255.255.255.255 GATEWAY=192.168.200.1 ONBOOT=no DNS1=195.100.10.1 Result of the File that is rewritten DEVICE=eth0 IPADDR=192.168.0.2 NETMASK=255.255.255.0 NETWORK=192.168.0.0 BROADCAST=255.255.255.255 GATEWAY=192.168.0.1 ONBOOT=no DNS1=195.100.10.1 Note that DNS1=195.100.10.1 Stays in the file becuase it dosent have a key with the value of DNS in our array. Thanks

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• Converting IPv4 or IPv6 address to a long for comparisons

  - by Justin Akehurst

  In order to check if an IPv4 or IPv6 address is within a certain range, I've got code that takes an IPv4 address, turns that into a long, then does that same conversion on the upper/lower bound of the subnet, then checks to see if the long is between those values. I'd like to be able to do the same thing for IPv6, but saw nothing in the Python 2.6 standard libraries to allow me to do this, so I wrote this up: import socket, struct from array import array def ip_address_to_long(address): ip_as_long = None try: ip_as_long = socket.ntohl(struct.unpack('L', socket.inet_pton(socket.AF_INET, address))[0]) except socket.error: # try IPv6 try: addr = array('L', struct.unpack('!4L', socket.inet_pton(socket.AF_INET6, address))) addr.reverse() ip_as_long = sum(addr[i] << (i * 32) for i in range(len(addr))) except socket.error as se: raise ValueError('Invalid address') except Exception as e: print str(e) return ip_as_long My question is: Is there a simpler way to do this that I am missing? Is there a standard library call that can do this for me?

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• .NET Framework - Possible memory-leaky classes?

  - by Robert Fraser

  Just the other day I was investigating a memory leak that was ballooning the app from ~50MB to ~130MB in under two minutes. Turns out that the problem was with the ConcurrentQueue class. Internally, the class stores a linked list of arrays. When an item is dequeued from the ConcurrentQueue, the index in the array is bumped, but the item remains in the array (i.e. it's not set to null). The entire array node is dropped after enough enqueues/dequeues, so it's not technically a leak, but if storing only a few large objects in the ConcurrentQueue, this can get out of hand fast. The documentation makes no note of this danger. I was wondering what other potential memory pitfalls are in the Base Class Library? I know about the Substring one (that is, if you call substring and just hold onto the result, the whole string will still be in memory). Any others you've encountered?

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• Rails created_at find condition...

  - by Dustin Brewer

  I'm attempting to sum daily purchase amounts for a given user. @dates is an array of 31 dates. I need the find condition to compare a date from the array to the created_at date of the purchases. What I'm doing below compares the exact DateTime for the create_at column. I need it to look at the day itself, not the DateTime. How can I write this so created_at is in between the date from the array? <% @dates.each do |date| %> <%= current_user.purchases.sum(:amount, :conditions = ["created_at = ?", date]) % <% end %

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• How to customize BsGridView to show links instead of BsButtonColumn?

  - by felipe.zkn

  Given the code below, I need to customize the third column to show two links instead of that BsButtonColumn. I didn't find any related documentation to get the answer. <?php $this->widget( 'bootstrap.widgets.BsGridView', array( 'id' => 'activity-translation-grid', 'dataProvider' => $model->search(), 'filter' => $model, 'columns' => array( 'id', 'name', array( 'class' => 'BsButtonColumn', ), ), ) ); ?>

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• Struts 2 Select tag

  - by nathj07

  I'm pretty new to the jsp and struts way of doing things and so far I like what I see. My current question is with the use of the struts select tag. I have a page that displays a number of dropdown boxes using struts select currently the options are hard coded in the jsp. I would like to populate them based on a properties file. However I have no idea where to start. I assume I need to take the contents of a properties file into an Array (of some sort) and assign that to the select tag. My questions are: Where does the code t build the array go? How do I connect that array to the select tag?

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• Android - Adding Subitem to a listview

  - by Oli

  I currently have a listview which contains a couple of strings. These are called from a string array in strings.xml <string name="app_name">Taxi Me</string> <string-array name="taxi_array"> <item>Barrys Taxi</item> <item>Boom Taxi</item> </string-array> What i was trying to do is create subitems for these so that i can show fields such as address and contact details etc. I made a customlistview a while back but cant work out how i can do it using the strings.xml file? Are there any particular tags i need to use so they show up in the list view? Any help would be greatly appreciated. Thanks

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• Implement a Cellular Automaton ? "Rule 110"

  - by ZaZu

  I was wondering how to use the Rule 110, with 55 lines and 14 cells. I have to then display that in an LED matrix display. Anyway my question is, how can I implement such automaton ?? I dont really know where to start, can someone please shed some light on how can I approach this problem ? Is there a specific METHOD I must follow ? Thanks --PROGRAM USED IS - C EDIT char array[54][14]; for(v=0;v<55;v++){ for(b=0;b<15;b++){ if(org[v][b-1]==0 && org[v][b]==0 && org[v][b+1] == 0) { array[v][b]=0; } array[v][b]=org[v][b]; } } Does that make sense ?? org stands for original

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• Multiple delimiters using Regex.Split in C#

  - by Arthur Frankel

  Let's say you need to split a string by various delimiters including newline (/r, /n) and a few other 'special' character strings. For example: This is a sample %%% text &&& that I would like to split %%% into an array. I would like the following in the resulting string array (contents via index) [0]This is a sample [1]text [2]that I would [3]like to split [4]into an array. I would like to use C# Regex.Split() function. What is the regex expression to match on all of my delimiters? Thanks in advance

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• Adding custom columns to Propel model?

  - by Hard-Boiled Wonderland

  At the moment I am using the below query: $claims = ClaimQuery::create('c') ->leftJoinUser() ->withColumn('CONCAT(User.Firstname, " ", User.Lastname)', 'name') ->withColumn('User.Email', 'email') ->filterByArray($conditions) ->paginate($page = $page, $maxPerPage = $top); However I then want to add columns manually, so I thought this would simply work: foreach($claims as &$claim){ $claim->actions = array('edit' => array( 'url' => $this->get('router')->generate('hera_claims_edit'), 'text' => 'Edit' ) ); } return array('claims' => $claims, 'count' => count($claims)); However when the data is returned Propel or Symfony2 seems to be stripping the custom data when it gets converted to JSON along with all of the superflous model data. What is the correct way of manually adding data this way?

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