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• Replacing Resource files on new BlackBerry app version

  - by Jeff

  Hello, I am maintaining an existing BlackBerry application (implemented as a MIDlet). The application contains a number of data files that get bundled with the app as resources. Some of these data files need to be updated for a new version of the app. When the user goes to install a new version of the application (via URL of Jad file), it prompts them with the following message "Persistent data exists for the application. Would you like to retain this data? " If the user selects "Yes", it looks like the app continues to use the old resource files. This is so surprising to me. First of all, am I losing my mind or will an upgrade really not overwrite existing resource files? Is there any way I can force it to? Thanks, Jeff

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• Replacing a colour/colours in a movieclip with different colours?

  - by Oli

  I am trying to take a movieclip of a character and change the colour of their clothes. The character is comprised of vectors. So far I have semi-sucessfully used this method: stop the movieclip take the bitmap data from the current frame use threshold to replace the colour store the resulting bitmap data in an array add an onenterframe function - clear the current frame and add the bitmap data from the processed data in the array So - this works pretty well. Each frame is only processed once at the beginning and then the write to the movieclip is very quick. However! As the replacement is being performed on a bitmap there is an amount of aliasing that takes place to remove jaggies/pixelation. This produces colours that are not matched using threshold. So the main colour is replaced correctly but it is surrounded by a halo of mixed colours :( I am sure there should be a better way to do this. Any ideas or answers would be greatly apreciated - Thanks.

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• Client-side or server-side processing?

  - by Nick

  So, I'm new to dynamic web design (my sites have been mostly static with some PHP), and I'm trying to learn the latest technologies in web development (which seems to be AJAX), and I was wondering, if you're transferring a lot of data, is it better to construct the page on the server and "push" it to the user, or is it better to "pull" the data needed and create the HTML around it on the clientside using JavaScript? More specifically, I'm using CodeIgniter as my PHP framework, and jQuery for JavaScript, and if I wanted to display a table of data to the user (dynamically), would it be better to format the HTML using CodeIgniter (create the tables, add CSS classes to elements, etc..), or would it be better to just serve the raw data using JSON and then build it into a table with jQuery? My intuition says to do it clientside, as it would save bandwidth and the page would probably load quicker with the new JavaScript optimizations all these browsers have now, however, then the site would break for someone not using JavaScript... Thanks for the help

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• What Libs should i use to write a packet sniffer in perl

  - by Mouseroot

  I basicly want to write a small packet sniffer in perl im using ubuntu 9 im basically looking to sniff all packets on my nic and return data such as source and destination address as well as the data i looked into Net::Write::Layer2 but i could never get it to run as it says it cannot find the required libs and i cannot find the dependents adn that lib is for writeing data and not accepting it ive read that i should use libpcap but no good examples are available i basicly just need to know what lib i should use and ill find a example/tutorial on using said lib Thanks in Advance

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• How do you set the "global delimiter" in Excel using VBA (or unicorns)?

  - by DanM

  I've noticed that if I use the text-to-columns feature with comma as the delimiter, any comma-delimited data I paste into Excel after that will be automatically split into columns. This makes me think Excel must have some kind of global delimiter. If this is true, how would I set this global delimiter using Excel VBA? Is it possible to do this directly, or do I need to "trick" Excel by doing a text-to-columns on some junk data, then delete the data? My ultimate goal is to be able to paste in a bunch of data from different files using a macro, and have Excel automatically split it into columns according to the delimiter I set.

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• Pass Linq Expression to a function

  - by Kushan Hasithe Fernando

  I want to pass a property list of a class to a function. with in the function based on property list I'm going to generate a query. As exactly same functionality in Linq Select method. Here I'm gonna implement this for Ingress Database. As an example, in front end I wanna run a select as this, My Entity Class is like this public class Customer { [System.Data.Linq.Mapping.ColumnAttribute(Name="Id",IsPrimaryKey=true)] public string Id { get; set; } [System.Data.Linq.Mapping.ColumnAttribute(Name = "Name")] public string Name { get; set; } [System.Data.Linq.Mapping.ColumnAttribute(Name = "Address")] public string Address { get; set; } [System.Data.Linq.Mapping.ColumnAttribute(Name = "Email")] public string Email { get; set; } [System.Data.Linq.Mapping.ColumnAttribute(Name = "Mobile")] public string Mobile { get; set; } } I wanna call a Select function like this, var result = dataAccessService.Select<Customer>(C=>C.Name,C.Address); then,using result I can get the Name and Address properties' values. I think my Select function should looks like this, ( *I think this should done using Linq Expression. But im not sure what are the input parameter and return type. * ) Class DataAccessService { // I'm not sure about this return type and input types, generic types. public TResult Select<TSource,TResult>(Expression<Func<TSource,TResult>> selector) { // Here using the property list, // I can get the ColumnAttribute name value and I can generate a select query. } } This is a attempt to create a functionality like in Linq. But im not an expert in Linq Expressions. There is a project call DbLinq from MIT, but its a big project and still i couldn't grab anything helpful from that. Can someone please help me to start this, or can someone link me some useful resources to read about this.

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• jQuery Mobile - how to force that page recreation - pagebeforecreate event

  - by NewUser

  I have a small jQuery mobile site. it's all single .html file it's has some edit functionality (view, edit, save) all works with ajax/json/web service Most of my pages are using data from web service, via AJAX & JSON, so I am using the following a lot: $(document).on( 'pagebeforecreate', '#monday', function() { // do some stuff on before create, load data with AJAX }); Now, how do I FORCE that page recreation (pagebeforecreate event) so the AJAX inside is run again (get the latest data from server)?

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• in django admin, can we have a multiple select based on choices

  - by Rasiel

  http://docs.djangoproject.com/en/dev/ref/models/fields/#choices i've read through the documentation and this implies using a database table for dynamic data, however it states choices is meant for static data that doesn't change much, if ever. so what if i want to use choices, but have it select multiple because the data i'm using is quite static, e.g days of the week. is there anyway to achieve this without a database table?

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• Using Pastebin API in Node.js

  - by wiill

  I've been trying to post a paste to Pastebin in Node.js, but it appears that I'm doing it wrong. I'm getting a Bad API request, invalid api_option, however I'm clearly setting the api_option to paste like the documentation asks for. var http = require('http'); var qs = require('qs'); var query = qs.stringify({ api_option: 'paste', api_dev_key: 'xxxxxxxxxxxx', api_paste_code: 'Awesome paste content', api_paste_name: 'Awesome paste name', api_paste_private: 1, api_paste_expire_date: '1D' }); var req = http.request({ host: 'pastebin.com', port: 80, path: '/api/api_post.php', method: 'POST', headers: { 'Content-Type': 'multipart/form-data', 'Content-Length': query.length } }, function(res) { var data = ''; res.on('data', function(chunk) { data += chunk; }); res.on('end', function() { console.log(data); }); }); req.write(query); req.end(); console.log(query) confirms that the string is well encoded and that api_option is there and set to paste. Now, I've been searching forever on possible causes. I also tried setting the encoding on the write req.write(query, 'utf8') because the Pastebin API mentions that the POST must be UTF-8 encoded. I rewrote the thing over and over and re-consulted the Node HTTP documentation many times. I'm pretty sure I completely missed something here, because I don't see how this could fail. Does anyone have an idea of what I have done wrong?

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• Stack Overflow problem transforming with a custom xslt

  - by Flynn1179

  I've got a system that allows the user the option of providing their own XSLT to apply to some data that's been retrieved, as a means of specifying how that data should be presented. However, if the user includes code in the XSLT equivalent to: <xsl:template match="/"> <xsl:element name="data"> <xsl:apply-templates select="." /> </xsl:element> </xsl:template> this causes .NET to infinitely recurse trying to process it, and produces a stack overflow error. I need to be able to trap this before it crashes the app, as the data that's been retrieved is occasionally quite time-consuming to obtain, and the data is lost when this happens. Is there any way of doing this? I know it's theoretically possible to identify any occurrences of xsl:apply-templates with "." in the select attribute, but this isn't the only way an infinite recursion could happen, I need a way of generically trapping it.

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• How do I plot more than one series using qplot?

  - by celenius

  I'm trying to understand how to have more than one series on a plot, using the following data. Year <- c('1950', '1960', '1970', '1980') Bus <- c(10,20,30,40) Bus.sd <- c(1.1, 2.2, 3.3, 4.4) Car <- c(20, 20, 40, 40) Car.sd <- c(1.1, 2.2, 3.3, 4.4) sample_data = data.frame(Year, Bus, Bus.sd, Car, Car.sd) qplot(Year, Bus, data=sample_data, geom="pointrange", ymin = Bus - Bus.sd/2, ymax = Bus + Bus.sd/2) For example, using the above data, how do I show both sample_data$Bus and sample_data$Car on the same plot in different colors? What I tried doing was: p <- qplot(...) then p <- p + qplot(...) where I replicated the previous line, but this gave me an error. I don't fully understand how AES works. I have studied the ggplot2 examples, but have difficulty understanding the relevant examples here.

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• Find HTML based on partial attribute

  - by Kirean

  Is there a way with javascript (particularly jQuery) to find an element based on a partial attribute name? I am not looking for any of the selectors that find partial attribute values as referenced in these links: starts with [name^="value"] contains prefix [name|="value"] contains [name*="value"] contains word [name~="value"] ends with [name$="value"] equals [name="value"] not equal [name!="value"] starts with [name^="value"] but more something along the lines of <div data-api-src="some value"></div> <div data-api-myattr="foobar"></div> and $("[^data-api]").doSomething() to find any element that has an attribute that starts with "data-api".

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• Managing important runtime business logic with regard to a codebase

  - by Daniel Beardsley

  I'm working on a project which will end up have a lot of application information stored in the form of records in a database. In this case, it's the configuration of data views: which grid columns to show/hide default filters to apply to each grid view column titles sorting subtotaling ... This information is a big part of the value of the application and is essential to it's function. The data will be altered by admins a fair amount, so it's not static and it wouldn't be appropriate to have to deploy a new version of the app every time the data changes. The question is, Where should this data be stored? It will definitely live in the database because that's how it's accessed, but I feel like it needs to also be kept with the version controlled codebase because it's an integral part of functioning of the application. Has anyone dealt with an issue like this before? What did you end up doing?

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• How to use JQuery to focus on a specific DIV tag?

  - by kwokwai

  Hi all, Say I got a few DIV tags in a HTML page like: <DIV ID="div1"> <Input type="radio" name="data['site1']['user']" VALUE="1">user1<br/> </DIV> <DIV ID="div2"> <Input type="radio" name="data['site1']['user']" VALUE="2">user2<br/> </DIV> <DIV ID="div3"> <Input type="radio" name="data['site1']['user']" VALUE="3">user3<br/> </DIV> <DIV ID="div4"> <Input type="radio" name="data['site1']['user']" VALUE="4">user4<br/> </DIV> Is it possible to do the same effect in JQuery like this: Document.getElementByID('div2').focus();

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• Search in static pages

  - by Shyju

  I have an ASP web application which has pages with static content as well as dynamic content(data from database). I want to implement a search feature in the site.I Can do this with the dynamic data easily by framing the select query based on the search keys and pull data from the tables,But i would like to know how can i implement the search with the static pages ?

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• CRC for cross platform applications

  - by Kangkan

  I wish to use a common CRC logic in a VB.NEt or C# application as well as on a c/Linux application. I have one c/Linux application that interacts with some webservice (c#) and also a web application (VB.NET). For some data, I want to put a CRC to be added to the data itself (say a flie) from the .NET side and check for the integrity of the data (checking the CRC) on the client and also the vice versa. Can somebody please guide me?

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• protect_from_forgery & Unobtrusive Javascript

  - by Matt Grande

  Hi all, I have some javascript making an ajax call in my Rails site: $.ajax({type: "PUT", url: url, data: { dummy: data }, complete: function(data) {}}); When Rails gets it, it throws back an ActionController::InvalidAuthenticityToken Error. I'd like to keep the protect_from_forgery stuff in there, if possible... But I'm at a loss for how can I pass the auth token from a javascript file? Can anyone help me out?

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• Fast, easy, and secure method to perform DB actions with GET

  - by rob - not a robber

  Hey All, Sort of a methods/best practices question here that I am sure has been addressed, yet I can't find a solution based on the vague search terms I enter. I know starting off the question with "Fast and easy" will probably draw out a few sighs, so my apologies. Here is the deal. I have a logged in area where an ADMIN can do a whole host of POST operations to input data relating to their profile. The way I have data structured is pretty distinct and well segmented in most tables as it relates to the ID of the admin. Now, I have a table where I dump one type of data into and differentiate this data by assigning the ADMIN's unique ID to each record. In other words, all ADMINs have this one type of data writing to this table. I just differentiate by the ADMIN ID with each record. I was planning on letting the ADMIN remove these records by clicking on a link with a query string - obviously using GET. Obviously, the query structure is in the link so any logged in admin could then exploit the URL and delete a competitor's records. Is the only way to safely do this through POST or should I pass through the session info that includes password and validate it against the ADMIN ID that is requesting the delete? This is obviously much more work for me. As they said in the auto repair biz I used to work in... there are 3 ways to do a job: Fast, Good, and Cheap. You can only have two at a time. Fast and cheap will not be good. Good and cheap will not have fast turnaround. Fast and good will NOT be cheap. haha I guess that applies here... can never have Fast, Easy and Secure all at once ;) Thanks in advance...

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• AWK: how to read columnwise file to AWK-script in Bash?

  - by HH

  $ cat read.sh #!bin/bash // how can I read the columnwise data to awk-script? awk '{sum+=$1} END {print sum}' read $ cat data 1 2 3 4 5 $ . ./read.sh <data awk: cmd. line:1: fatal: cannot open file `read' for reading (No such file or directory)

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• PIC C - Sending 200 values over USB, but it only sends 25 or so of them...

  - by Adam

  I have a PIC18F4455 microcontroller which I am trying to use to send 200 values over USB. Basically I am using a for loop and a printf statement to print the values to the usb output stream. However, when the code executes I see in my serial port monitor that it is only sending the first 25 or so values, then stopping. My PIC C code is below. It will send out the 25th or so value (and the comma), but not send anything after and not send a newline character. I'm trying to get it to send all the values, then a newline character at the end. I am sending them all as characters because I can convert them on the PC end of it. //print #3 for (i = 0; i <= 199; i++){if (data[i]=='\0' || data[i]=='\n'){data[i]++;}} for (i = 0; i < 199; i++){printf(usb_cdc_putc, "%c,", data[i]);} printf(usb_cdc_putc, "%c\n", data[199]);

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• Is File good for Interprocess communication

  - by Karthik

  Hi, I have an EXE and DLL running in different process. From DLL I have to send large of amount of data to EXE, which would vary from 50 chars to 2000 chars and more(The data is recordid of records saved in DB). I thought about two options to do that: 1. Using SendMessage- In which data's will be sent in batch. 2. Use an Intermediate file to transfer data. Can anyone list out the pros and cons of methods. I have developed my components using C#.NET Thanks you folks.

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• Advice/suggestions for my first project PHP Classes

  - by Philip

  Hi guys, Any advice is welcome! I have a very limited understanding of php classes but below is my starting point for the route I would like to take. The code is a reflection of what I see in my head and how I would like to go about business. Does my code even look ok, or am I way off base? What are your thoughts, how would you go about achieving such a task as form-validate-insertquery-sendmail-return messages and errors? Please try and keep your answers simple enough for me to digest as for me its about understanding whats going on and not just a copy/paste job. Kindest regards, Phil. Note: This is a base structure only, no complete code added. <?php //======================================= //class.logging.php //======================================== class logging { public $data = array(); public $errors = array(); function __construct() { array_pop($_POST); $this->data =($this->_logging)? is_isset(filterStr($_POST) : ''; foreach($this->data as $key=> $value) { $this->data[$key] = $value; } //print_r($this->data); de-bugging } public function is_isset($str) { if(isset($str)) ? true: false; } public function filterStr($str) { return preg_match(do somthing, $str); } public function validate_post() { try { if(!is_numeric($data['cardID'])) ? throw new Exception('CardID must be numeric!') : continue; } catch (Exception $e) { return $errors = $e->getCode(); } } public function showErrors() { foreach($errors as $error => $err) { print('<div class="notok"></div><br />'); } } public function insertQ() { $query = ""; } } //======================================= //Usercp.php //======================================== if(isset($_GET['mode'])) { $mode = $_GET['mode']; } else { $mode = 'usercp'; } switch($mode) { case 'usercp': echo 'Welcome to the User Control Panel'; break; case 'logging': require_once 'class.logging.php'; $logger = new logging(); if(isset($_POST['submit']) { if($logger->validate_post === true) { $logger->insertQ(); require_once '/scripts/PHPMailer/class.phpmailer.php'; $mailer = new PHPMailer(); $mailer->PHPMailer(); } else { echo ''.$logger->showErrors.''; } } else { echo ' <form action="'.$_SERVER['PHP_SELF'].'?mode=logging" method="post"> </form> '; } break; case 'user_logout': // do somthing break; case 'user_settings': // do somthing break; ?>

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• BIRT Viewer with Rails App

  - by anoojrajan

  Has anyone tried using BIRT for reporting on a Rails app.. I am working on a pretty big app on ROR. I was trying to get BIRT to work happily with the app. Since the BIRT Report Designer cannot be used with Rails, I decided to use BIRT Viewer alone and give the links to the reports on the page and have BIRT Viewer running on Tomcat on the same box to render the reports. This has a big problem of not being able to allow the user to create any custom reports. Has anybody tried anything even remotely close to this??? If yes do you have any tips for me on any part of this endeavor? Thanks in advance for all the help.

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• IE7 not digesting JSON: "parse error"

  - by Kenny Leu

  While trying to GET a JSON, my callback function is NOT firing. $.ajax({ type:"GET", dataType:'json', url: myLocalURL, data: myData, success: function(returned_data){alert('success');} }); The strangest part of this is that my JSON(s) validates on JSONlint this ONLY fails on IE7...it works in Safari, Chrome, and all versions of Firefox. If I use 'error', then it reports "parseError"...even though it validates! Is there anything that I'm missing? Does IE7 not process certain characters, data structures (my data doesn't have anything non-alphanumeric, but it DOES have nested JSONs)? I have used tons of other AJAX calls that all work (even in IE7), but with the exception of THIS call. An example data return here is: {"question":{ "question_id":"19", "question_text":"testing", "other_crap":"none" }, "timestamp":{ "response":"answer", "response_text":"the text here" } } I am completely at a loss. Hopefully someone has some insight into what's going on...thank you!

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• How to use R's ellipsis feature when writing your own function?

  - by Ryan Thompson

  The R language has a nifty feature for defining functions that can take a variable number of arguments. For example, the function data.frame takes any number of arguments, and each argument becomes the data for a column in the resulting data table. Example usage: > data.frame(letters=c("a", "b", "c"), numbers=c(1,2,3), notes=c("do", "re", "mi")) letters numbers notes 1 a 1 do 2 b 2 re 3 c 3 mi The function's signature includes an ellipsis, like this: function (..., row.names = NULL, check.rows = FALSE, check.names = TRUE, stringsAsFactors = default.stringsAsFactors()) { [FUNCTION DEFINITION HERE] } I would like to write a function that does something similar, taking multiple values and consolidating them into a single return value (as well as doing some other processing). In order to do this, I need to figure out how to "unpack" the ... from the function's arguments within the function. I don't know how to do this. The relevant line in the function definition of data.frame is object <- as.list(substitute(list(...)))[-1L], which I can't make any sense of. So how can I convert the ellipsis from the function's signature into, for example, a list? To be more specific, how can I write get_list_from_ellipsis in the code below? my_ellipsis_function(...) { input_list <- get.list.from.ellipsis(...) output_list <- lapply(X=input_list, FUN=do_something_interesting) return(output_list) } my_ellipsis_function(a=1:10,b=11:20,c=21:30)

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