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• rawurlencode() and urlencode() not working in CodeIgniter

  - by Keith Chason

  I am trying to encode a string into a safe url for generic purposes, and neither rawurlencode() nor urlencode() work when using CodeIgniter. I have used them and they work pefectly fine with straight PHP, but for whatever reason, it doesn't work. I haven't been able to find any others with this problem and thus no solution. Code: <a href="/search/degree/<?=rawurlencode($row->degree)?>" class="element_link"><?=$row->degree?></a>

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• create a dict of lists from a string

  - by Chris Card

  I want to convert a string such as 'a=b,a=c,a=d,b=e' into a dict of lists {'a': ['b', 'c', 'd'], 'b': ['e']} in Python 2.6. My current solution is this: def merge(d1, d2): for k, v in d2.items(): if k in d1: if type(d1[k]) != type(list()): d1[k] = list(d1[k]) d1[k].append(v) else: d1[k] = list(v) return d1 record = 'a=b,a=c,a=d,b=e' print reduce(merge, map(dict,[[x.split('=')] for x in record.split(',')])) which I'm sure is unnecessarily complicated. Any better solutions?

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• android - pre-allocate space for a file before downloading it

  - by android developer

  how can i create a pre-allocated file on android? something like a sparse file ? i need to make an applicaton that will download a large file , and i want to avoid having an out-of-space error while the download is commencing . my solution needs to support resuming and writing to both internal and external storage. i've tried what is written here: Create file with given size in Java but none of the solutions there didn't work for some reason.

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• How to generate a checksum for an java object

  - by Alex

  hi there, I'm looking for an solution to generate a checksum for any type of java object, which remains the same for every exection of an application which produces the same object. I tried it with object.hashcode(), but as I read in the api ....This integer need not remain consistent from one execution of an application to another execution of the same application. thank you, best regard alex

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• What is a good OCR that can detect handwriting?

  - by Sergio Tapia

  I need a library that can extract text from handwritten paper once I scan it. Normal Latin text. It can be a free solution or even something I have to pay for, as long as it handles handwriting for block letters (not cursive).

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• How to create a true singleton in java?

  - by rjoshi

  I am facing a problem with my singleton when used across multiple class loaders. E.g Singleton accessed by multiple EJBs. Is there any way to create a singleton which has only one instance across all class loader? I am looking for pure java solution either using custom class loader or some other way.

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• drupal editing user information after registration

  - by Arun

  how to allow user to edit their information after registration. And moreover how add new fields during editing information. for ex: my primary registration holds name,email,picture(optional). I want to get additional information like state,city,... when they wants some customized service. May any one suggest me a solution .

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• Most optimal way to convert to date

  - by IMHO

  I have legacy system where all date fields are maintained in YMD format. Example: 20101123 this is date: 11/23/2010 I'm looking for most optimal way to convert from number to date field. Here is what I came up with: declare @ymd int set @ymd = 20101122 select @ymd, convert(datetime, cast(@ymd as varchar(100)), 112) This is pretty good solution but I'm wandering if someone has better way doing it

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• Magento or Prestashop, which is better?

  - by leduchuy89vn

  I want to find an ecommerce solution for my little shop. My friend tells me that Prestashop is very easy to use and develop modules for, but some say Magento is better. Can anybody tell me which is better for developing modules and why? Thank you.

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• One-click web site backup with asp.net

  - by HasanGursoy

  Hi, I want to backup my web site regularly but instead of backup my files via ftp program I want a one-click solution which will copy all my files and zip them and allow to download. Can this be done with asp.net at same web site or I have to write a .net app for this purpose?

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• ASP.NET MVC & Web Services

  - by ANaimi

  Hello, Does adding a Web Service to my ASP.NET MVC project break the whole concept of MVC? That Web Service (WCF) depends on the Model layer from my MVC project to communicate with the back-end (so it looks to me like it needs to be part of the MVC solution). Should I add this to the Controller or Model layer?

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• Is there a recommended approach to handle saving data in response to within-site navigation without

  - by Carvell Fenton

  Hello all, Preamble to scope my question: I have a web app (or site, this is an internal LAN site) that uses jQuery and AJAX extensively to dynamically load the content section of the UI in the browser. A user navigates the app using a navigation menu. Clicking an item in the navigation menu makes an AJAX call to php, and php then returns the content that is used to populate the central content section. One of the pages served back by php has a table form, set up like a spreadsheet, that the user enters values into. This table is always kept in sync with data in the database. So, when the table is created, is it populated with the relevant database data. Then when the user makes a change in a "cell", that change immediately is written back to the database so the table and database are always in sync. This approach was take to reassure users that the data they entered has been saved (long story...), and to alleviate them from having to click a save button of some kind. So, this always in sync idea is great, except that a user can enter a value in a cell, not take focus out of the cell, and then take any number of actions that would cause that last value to be lost: e.g. navigate to another section of the site via the navigation menu, log out of the app, close the browser, etc. End of preamble, on to the issue: I initially thought that wasn't a problem, because I would just track what data was "dirty" or not saved, and then in the onunload event I would do a final write to the database. Herein lies the rub: because of my clever (or not so clever, not sure) use of AJAX and dynamically loading the content section, the user never actually leaves the original url, or page, when the above actions are taken, with the exception of closing the browser. Therefore, the onunload event does not fire, and I am back to losing the last data again. My question, is there a recommended way to handle figuring out if a person is navigating away from a "section" of your app when content is dynamically loaded this way? I can come up with a solution I think, that involves globals and tracking the currently viewed page, but I thought I would check if there might be a more elegant solution out there, or a change I could make in my design, that would make this work. Thanks in advance as always!

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• Detect whether adobe reader is installed using VB code

  - by Prianca

  hi i want to detect whether adobe reader is installed using VB6. Also if detected that its not installed what would be the best solution.

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• How to change the number of columns in a table dynamically but still keep the table layout intact?

  - by gurupriyan.e

  I have a 'n' column table , the first column is a drop down box , on selecting the options from the drop down, the other columns change. For eg: first drop down might need to display a text box and a button , the second drop down 3 text boxes and a button and so on. There is only one row in the table. What is the best solution to achieve this. with Sincere thanks,

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• Ideas for designing an automated content tagging system needed

  - by Benjamin Smith

  I am currently designing a website that amongst other is required to display and organise small amounts of text content (mainly quotes, article stubs, etc.). I currently have a database with 250,000+ items and need to come up with a method of tagging each item with relevant tags which will eventually allow for easy searching/browsing of the content for users. A very simplistic idea I have (and one that I believe is employed by some sites that I have been looking to for inspiration (http://www.brainyquote.com/quotes/topics.html)), is to simply search the database for certain words or phrases and use these words as tags for the content. This can easily be extended so that if for example a user wanted to show all items with a theme of love then I would just return a list of items with words and phrases relating to this theme. This would not be hard to implement but does not provide very good results. For example if I were to search for the month 'May' in the database with the aim of then classifying the items returned as realting to the topic of Spring then I would get back all occurrences of the word May, regardless of the semantic meaning. Another shortcoming of this method is that I believe it would be quite hard to automate the process to any large scale. What I really require is a library that can take an item, break it down and analyse the semantic meaning and also return a list of tags that would correctly classify the item. I know this is a lot to ask and I have a feeling I will end up reverting to the aforementioned method but I just thought I should ask if anyone knew of any pre-existing solution. I think that as the items in the database are short then it is probably quite a hard task to analyse any meaning from them however I may be mistaken. Another path to possibly go down would be to use something like amazon turk to outsource the task which may produce good results but would be expensive. Eventually I would like users to be able to (and want to!) tag content and to vote for the most relevant tags, possibly using a gameification mechanic as motivation however this is some way down the line. A temporary fix may be the best thing if this were the route I decided to go down as I could use the rough results I got as the starting point for a more in depth solution. If you've read this far, thanks for sticking with me, I know I'm spitballing but any input would be really helpful. Thanks.

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• Sharepoint, ajax and page title

  - by drax

  Hi, I have strange problem with sharepoint and ajax functionality. We have an UpdatePanel placed inside webpart. When partial postback occurs, page title gets missing. We have found that temporary partial solution is to write title element into one line and not use any spaces or controls inside it..not even a literal control. But we need some way to provide sommon title for all pages, so title would look like this: My default title - Current page title Any ideas how to solve this?

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• linode.com vs slicehost.com: which fits Java applications better?

  - by john

  Dear friends, I've been searching for a hosting solution for a grails application. I've read some very good comments on slicehost, but not much about linode. could some one with the experiences of either of them share your insights please? thanks.

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• Qt: How can I receive events fired by QWebElement objects?

  - by Jen

  I want to receive notifications whenever links are clicked or text fields are changed in a Webkit instance in Qt. How can I hook up event listeners to a QWebElement? I know I can put some Javascript on each element’s onchange / onclick handler, but I’m looking for a cleaner solution.

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• How to avoid navigate back when the user types backspace on a HTML text input?

  - by Jader Dias

  Backspace is the browser hotkey for Navigate Back To The Last Page. I know that when an input has the focus this hotkey is disabled. But I have keyup and keydown events binded to this input, and something I wrote is causing this trouble. Do you know the solution?

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• Where can i find a good example of archiving objects for persistence for the iphone sdk

  - by Iggy

  I have an object that contains about half a dozen properties. I expect to save maybe a dozen or more of these objects to my documents folder. My solution is to save the data using NSEncoding and NSKeyed/Archiver/Unarchiver. Anyone have a better strategy or approach.

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• How to navigate to another html page?

  - by newbie

  In my application there's a usual login page sending username and password to the server script, where it needs to be authenticated, and in case of an authentic user, the server should redirect to a page student.html. This is my code var ports = 3000; var portt = 3001; var express = require('express'); var student = require('express')(); var teacher = require('express')(); var server_s = require('http').createServer(student); var server_t = require('http').createServer(teacher); var ios = require('socket.io').listen(server_s); var iot = require('socket.io').listen(server_t); var path = require('path'); server_s.listen(ports); server_t.listen(portt); student.use(express.static(path.join(__dirname, 'public'))); student.get('/', function(req,res){ res.sendfile(__dirname + '/login.html'); }); teacher.use(express.static(path.join(__dirname, 'public'))); teacher.get('/', function(req,res){ res.sendfile(__dirname + '/mytry.html'); }); ios.sockets.on('connection', function(socket){ var username, password; socket.on('check',function(data){ username = data[0]; password = data[1]; //************* Database connection and query ************* var mysql = require('mysql'); var connection = mysql.createConnection({ host : 'localhost', user : 'user', password: '*******', database: 'my_db' }); connection.connect(); var qstring = 'SELECT s_id FROM login_student WHERE username='+username+'AND password='+password; connection.query(qstring, function(err, rows, fields) { if (err) { console.log('ERROR: ' + err); socket.emit('login_failure','DB error'); return; } console.log('The solution is: ', rows[0].solution); if (rows>0) //***** Here i want redirection to another page ****** else socket.emit('login_failure','Invalid Username or password'); }); connection.end(); }); }); iot.sockets.on('connection', function(socket){ ; }); }); Can anyone suggest what should I do?

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• Case Insensitive URLs with mod_rewrite

  - by Paul Tarjan

  I'd like for any url that doesn't hit an existing file, to do a lookup on the other possible cases and see if those files exist, and if so, 302 to them. If that's not possible, then I'm ok with these compromises: Only check the lowercase version Only check the first path portion For example http://example.com/CoOl/PaTH/CaMELcaSE should redirect to http://example.com/cool/path/camelCase (assuming the latter exists). but of course a full solution is much more useful to me and others

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• How do I create a regular expression to match a word misspelling the original case sensitivity?

  - by Patrick Allaert

  I want to discover wrong spelling of "FooBar" in sentence: "This is a 'FooBar' example where I should match different spelling of fooBar such as: foobar, FOOBAR or even fOoBaR but not foobarS!" In this sentence, I would like to match words (in order): fooBar, foobar, FOOBAR, fOoBaR and not: FooBar (correct spelling), foobarS (not the same word) Is there an existing solution using Perl Regular Expression? This is intended to be used with grep -P Thanks

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• How to stream semi-live audio over internet

  - by Thomas Tempelmann

  I want to write something like Skype, i.e. I have a constant audio stream on one computer and then recompress it in a format that's suitable for a latent internet connection, receive it on the other end and play it. Let's also assume that the internet connection is fairly modern and fast, i.e. DSL or alike, no slow connections over phone and such. The involved computers will also be rather modern (Dual Core Intel CPUs at 2GHz or more). I know how to handle the audio on the machines. What I don't know is how to transmit the audio in an efficient way. The challenges are: I'd like get good audio quality across the line. The stream should be received without drops. The stream may, however, be received with a little delay (a second delay is acceptable). I imagine that the transport software could first determine the average (and max) latency, then start the stream and tell the receiver to wait for that max latency before starting to play the audio. With that, if the latency doesn't get any higher, the entire stream will be playable on the other side without stutter or drops. If, due to unexpected IP latencies or blockages, the stream does get cut off, I want to be able to notice this so that I can take actions (e.g. abort the stream) and eventually start a new transmission. What are my options if I want do use ready-made software for the compression and tranmission? I have no intention to write my own audio compression engine, really. OTOH, I plan to sell the solution in a vertical market, meaning I can afford a few dollars of license fees per copy, but not $100s. I guess the simplest solution would be to just open a TCP stream, send a few packets back and forth to determine their running time (or even use UDP for that), then use the results as the guide for my max latency value, then simply fire the audio data in its raw form (uncompressed 16 bit stereo), along with a timing code over the TCP connection. The receiver reads the data and plays it with the pre-determined delay. That might just work with the type of fast connection I expect. I just wonder if there are better solutions to reach this goal, with better performance (lower latency) and less data (compressed). BTW, I first try to implement this on OS X, but might want to do it on Windows, too, if it proves successful.

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• MVC Entity Framework: Cannot open user default database. Login failed.

  - by Michael

  This type of stuff drives me nuts. I'm having trouble finding the exact issue that I'm having, maybe I just don't know the terminology. Anyway, I had a working website using MVC and Entity Framework, but then I coded an error in a partial view page (ascx). Then all of a sudden I started to get this message. Cannot open user default database. Login failed. Login failed for user 'NT AUTHORITY\SYSTEM' I've found plenty of suggestions about opening SQL Server Management Studio, Double Click on Security, Double Click on Logins, Double click on NT AUTHORITY\SYSTEM and then double click on User Mapping. In this view I'm suppose to check the box for my database so that this user is mapped to this login. However, since I created my database in Visio Studio 2008 as part of my solution, it doesn't show up to allow me to click on it. So what do I do now? What drives me nuts is that everything was working fine. I was using my computer name to access the website and everything was working fine until the coding error. I've fix the error but still getting the error. I should also mention that this error started yesterday too around the same time but later cleared itself up. If I use localhost to access the site, it works just fine. IIS7 configuration for my website: Application Pool = DefaultAppPool Physical Path Credentials Logon = ClearText With in connection strings. I do see the one for my database in this solution. Entry Type is local metadata=res://*/Models.DataModel.csdl|res://*/Models.DataModel.ssdl|res://*/Models.DataModel.msl; provider=System.Data.SqlClient; provider connection string="Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\FFBall.mdf;Integrated Security=True;User Instance=True;MultipleActiveResultSets=True" And somewhere I remember changing the identity from Network Service to LocalSystem. Because when I first stared I was getting this same message, but I changed this value and it started working. I saw that suggested somewhere too but I do not recall. Wait I remember now, I believe in IIS7, under Application Pools, DefaultAppPool identity is set to LocalSystem. Additional things I've tried. Restart the computer Recycle the application pool. Antivirus isn't running. Any help would be appreciated. Thank you in advance.

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