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• Why does Google's closure library not use real private members?

  - by Thor Thurn

  I've been a JavaScript developer for a while now, and I've always thought that the correct way to implement private members in JavaScript is to use the technique outlined by Doug Crockford here: http://javascript.crockford.com/private.html. I didn't think this was a particularly controversial piece of JavaScript wisdom, until I started using the Google Closure library. Imagine my surprise... the library makes no effort to use Crockford-style information hiding. All they do is use a special naming convention and note "private" members in the documentation. I'm in the habit of assuming that the guys at Google are usually on the leading edge of software quality, so what gives? Is there some downside to following Mr. Crockford's advice that's not obvious?

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• Silverlight layout Best Practices

  - by JustSmith

  I'm writing a fairly big interface using Silverlight. As I progress, the xaml file is getting fairly big and is becoming proportionally uglier. Questions Are there any resources out there to make the xaml more readable? For example, how would I display the order of attributes (e.g. height and Width first) so that it looks the most tidy? Another issue is that there are multiple ways to implement an interface with grids and stack panels. Is there a preferred approach when using one or the other? I am looking for advice and links to other resources that can be used as examples.

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• What should I learn after HTML and CSS?

  - by Ryan B

  I am 5 days into learning how to make my website, flying through my HTML & CSS book and having fun. I’m starting to consider what to order next. I’m not sure what to study next, so please give me some advice if you can. My end goal is to create a site that has a lot of the functionality that www.edufire.com and similar sites have, just for example. I think I’m learning well with the Head First Series, and the style will probably serve me well as an intro to programming. However, I don't think the books dive too deeply into any 1 subject. I could order: A: Head First Programming: A Learner’s Guide to Programming Using the Python Language B: Head First Javascript C: Head First PHP & MySQL D: a different programming book or E: another CSS or design book to solidify my basic HTML & CSS skills Any guidance would be appreciated. Thanks!

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• Accessing Linq Values in ViewData

  - by Jemes

  I'm having trouble accessing the id, area and theme values in my ViewData. They are being set in my action filter but when I get to the Site.Master I don't have access to them. Any help or advice would be great. ActionFilter public override void OnActionExecuting(ActionExecutingContext filterContext) { int SectionID = Convert.ToInt32(filterContext.RouteData.Values["Section_ID"]); int CourseID = Convert.ToInt32(filterContext.RouteData.Values["Course_ID"]); if (CourseID == 0) { filterContext.Controller.ViewData["Styles"] = (from m in _dataContext.Styles where m.Area_ID == SectionID select new {theme = m.Area_FolderName }).ToList(); } else { filterContext.Controller.ViewData["Styles"] = (from m in _dataContext.Styles where m.Course_ID == CourseID select new { theme = m.Course_FolderName }).ToList(); } } } Site.Master <%@ Master Language="C#" Inherits="System.Web.Mvc.ViewMasterPage" % <%@ Import Namespace="Website.Models" % <% foreach (var c in (IEnumerable<Styles>)ViewData["Styles"]) { Response.Write(c.Theme); }%>

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• how to properly free a char **table in C

  - by Samantha

  Hello, I need your advice on this piece of code: the table fields options[0], options[1] etc... don't seem to be freed correctly. Thanks for your answers int main() { .... char **options; options = generate_fields(user_input); for(i = 0; i < sizeof(options) / sizeof(options[0]); i++) { free(options[i]); options[i] = NULL; } free(options); } char ** generate_fields(char *) { char ** options = malloc(256*sizeof(char *)); ... return options; }

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• Can squid forward DNS queries to a DNS server?

  - by pravin

  This might something be completely impossible to achieve, but before I give it a shot thought I might get some advice from a fellow geek. Would squid proxy DNS queries as well? I would like to forward DNS queries to go through squid and use squid's DNS error page, of course by customizing it. I see the DNS queries are hitting my squid box on UDP port 53. I can setup a port forwarding so that all these queries get sent to squid's port 3128. But would squid understand its a DNS query and forward those queries to the dns server set in squid.conf? I hope my question is clear but please shout up and I would be glad to give you some more info if needed. Thanks guys!

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• Problem in using svn and buildix

  - by jani

  Hi all I ran into a problem in using svn and buildix. I have a project created in svn as well as in cruise control which was working fine. Since yesterday whenever I commit changes into svn they are successfully commited but buildix is not able to pick up those changes, Normally I used to run 'svn update' whenever this problem occurs but now this is not helping for this project. When I try to run 'svn update', I get Skipped '.' and when I try to run 'svn cleanup', I get svn: '.' is not a working copy directory I took the advice of some one and deleted the folder .svn in my project but that did not help. Any help, thanks in advance. Regards, Jani

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• advise how to implement a code generator for asp.NET mvc 2

  - by loviji

  Hello, I would like your advice about how best to solve my problem. In a Web server is running. NET Framework 4.0. Whatever the methods and technologies you would advise me. applications built on the basis Asp.NET MVC 2. I have a database table in MS SQL Server. For each database, I must implement the interface for viewing, editing, and deleting. So code generator must generate model, controller and views.. Generation should happen after clicking on the button. as model I use .NET Entity Framework. Now, I need to generate controllers and views. So if i have a table with name tableN1. and below its colums: [ID] [bigint] IDENTITY(1,1) NOT NULL, [name] [nvarchar 20] NOT NULL, [fullName] [nvarchar 50] NOT NULL, [age] [int] NOT NULL [active] [bit] NULL for this table, i want to generate views and controller. thanks.

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• Converting a large SQL Server Database to Azure Storage

  - by Laith

  Hi guys, I have a very large database structure, (Data is not important at this point, I can migrate the info in the db pretty easily if the structure is done) , all reside in SQL Server and I even published it to SQL Azure, but thinking about the limitation of SQL Azure in size, made me decide to switch most of the tables that do not need all the bells and whistles of SQL Azure to Azure Table and blob storage. I was thinking of creating a TT template that dose that, but was wondering if their is a tool that do that. Any ideas or thoughts. The only tables that i would keep in SQL Azure would anything related to transactions like payments. Appreciate your thoughts and advice

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• Running mongod as a windows service

  - by andreas

  Hello, i have installed mongodb on win32 and i am trying to run it as a service. I have followed the instructions posted here: http://www.deltasdevelopers.com/post/Running-MongoDB-as-a-Windows-Service.aspx but when when windows tries to 'load'/'run' the service there is a problem. I see the service under the services control banner constantly in the 'starting' state. The result: the service is not started and windows is constantly trying to start it without success. The instructions i have followed are: At the command line C:\mongodb\mongod -install then C:\mongodb\mongod -service Then i modified the Win Registry Entry for the MongoDB Service by setting the ImagePath key to the value of C:\mongodb\mongodb.exe -service Any advice? What am i doing wrong?

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• How (and where) to get aligned tRNA sequences (and import it into R)

  - by Tal Galili

  (This is a database / R commands question) I wish (for my thesis work), to import tRNA data into R and have it aligned. My questions are: 1) What resources can I use for the data. 2) What commands might help me with the import/alignment. So far, I found two nice repositories that holds such data: http://trnadb.bioinf.uni-leipzig.de/Resulthttp://trnadb.bioinf.uni-leipzig.de/Result http://gtrnadb.ucsc.edu/download.htmlhttp://gtrnadb.ucsc.edu/download.html And also the readFASTA command from Biostrings, that does basic importing of the data into R. My problem still remains with how to handle the alignment of the tRNA. Since I am not from the field, I might be missing a very basic answer (like where I should download the data from, or what command to use). If you might be willing to advice me, that would be most helpful. Many thanks in advance, Tal

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• Erlang Supervisor Strategy For Restarting Connections to Downed Hosts

  - by derdewey

  I'm using erlang as a bridge between services and I was wondering what advice people had for handling downed connections? I'm taking input from local files and piping them out to AMQP and it's conceivable that the AMQP broker could go down. For that case I would want to keep retrying to connect to the AMQP server but I don't want to peg the CPU with those connections attempts. My inclination is to put a sleep into the reboot of the AMQP code. Wouldn't that 'hack' essentially circumvent the purpose of failing quickly and letting erlang handle it? More generally, should the erlang supervisor behavior be used for handling downed connections?

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• 500px.com Ranking Algorithm

  - by alex

  I was recently wondering how http://500px.com calculates their "Pulse" rating. The "Pulse" is a score from 1..100 based on the popularity of the photo. I think it might use some of the following criteria: Number of likes Number of "favorites" Number of comments Total views maybe the time since the photo has been uploaded maybe some other non-obvious criteria like the users follower count, user rank, camera model or similar How would I achieve some sort of algorithm like this? Any advice on how to implement an algorithm with this criteria (and maybe some code) would be appreciated too.

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• Pool Billiard AI

  - by Sebi

  Im implementing a pool billiard game in Java and it all works fine. It is a multiplayer game, but nevertheless, it should also be possible to play it alone. For this purpose I'm trying to implement a simple KI. At the moment, the KI choose just randomly a direction and a random intensity of the impulse (don't know the correct english word for that). Of course this AI is very poor and unlikely to ever challenge a player. So i thought about improving the KI, but there are several hard to solve problems. First I thought of just choosing the nearest ball and to try to put it directly into the nearest hole. This isn't that bad, but if there other balls in the line between, it isn't really working anymore. Additionally this dosn't solve te problem of calculating the intensity of the impulse. So are there any general advice? Or any ideas? Best practices?

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• When using a package or framework is there a standard way to use version control?

  - by PurplePilot

  i.e. Do you put the whole package under VCS or just the components you are programming? Packages by there nature will get upgraded and that code will need to be added into the VCS, plus there is a lot of code that is static. Specifically I am going to be working on Joomla, adding and building modules, customising modules and the look and feel. Initially this will be just me but will expand to possibly two more developers as the project ramps up. My reaction would be just to VCS the lot, it means that i know it is all there and deployment via CI is easier(?). The alternative is to exclude the bulk of the code that is not being altered which could be error prone and laborious. As there is not a specific answer for this and i am looking for either experience or best practice advice i have marked it community wiki.

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• Reading UDP Packets

  - by Thomas Mathiesen

  I am having some trouble dissecting a UDP packet. I am receiving the packets and storing the data and sender-address in variables 'data' and 'addr' with: data,addr = UDPSock.recvfrom(buf) This parses the data as a string, that I am now unable to turn into bytes. I know the structure of the datagram packet which is a total of 28 bytes, and that the data I am trying to get out is in bytes 17:28. I have tried doing this: mybytes = data[16:19] print struct.unpack('>I', mybytes) --> struct.error: unpack str size does not match format And this: response = (0, 0, data[16], data[17], 6) bytes = array('B', response[:-1]) print struct.unpack('>I', bytes) --> TypeError: Type not compatible with array type And this: print "\nData byte 17:", str.encode(data[17]) --> UnicodeEncodeError: 'ascii' codec can't encode character u'\xff' in position 0: ordinal not in range(128) And I am not sure what to try next. I am completely new to sockets and byte-conversions in Python, so any advice would be helpful :) Thanks, Thomas

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• How to update primary key

  - by slave016

  Here is my problem: I have 2 tables: 1.WORKER, with coloumns |ID|OTHER_STAF| , where ID is primary key, and 2.FIRM, with coloumns |FPK|ID|SOMETHING_ELSE| , where combination FPK and ID make primary key, and also ID is a foreign key referenced to WORKER.ID (not null, and must have same value as in WORKER). I want to make stored procedure UPDATE_ID_WORKER, where I would like to change the value of specific ID in WORKER, and also in all instances of specific value of ID in FIRM. stored procedure: ........ @id .. ???? ........ Thanks for every advice...

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• How do You Get a Specific Value From a System.Data.DataTable Object?

  - by Giffyguy

  I'm a low-level algorithm programmer, and databases are not really my thing - so this'll be a n00b question if ever there was one. I'm running a simple SELECT query through our development team's DAO. The DAO returns a System.Data.DataTable object containing the results of the query. This is all working fine so far. The problem I have run into now: I need to pull a value out of one of the fields of the first row in the resulting DataTable - and I have no idea where to even start. Microsoft is so confusing about this! Arrrg! Any advice would be appreciated. I'm not providing any code samples, because I believe that context is unnecessary here. I'm assuming that all DataTable objects work the same way, no matter how you run your queries - and therefore any additional information would just make this more confusing for everyone.

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• How to generate entity classes from nhibernate mapping files during runtime.

  - by Denis Rosca

  Hello, i need some help with c# and nhibernate. I'm working on a project that requires the entity classes to be generated from hbm files at runtime. I get the mapping files from a service, and then need to generate the classes dynamicaly and configure nhibernate to use them. The problem is that i'm new to nhibernate and not much of a pro in c#, so me writing the piece of code that achieves this is very error-prone. I was wondering if you know of any open source software that i could use. Worst case scenario (if can't find anything that even remotely resembles what i need), do you guys have some advice on where should i start? Maybe some links ? Thanks, Denis.

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• Using Python and Mechanize with ASP Forms

  - by tchaymore

  I'm trying to submit a form on an .asp page but Mechanize does not recognize the name of the control. The form code is: <form id="form1" name="frmSearchQuick" method="post"> .... <input type="button" name="btSearchTop" value="SEARCH" class="buttonctl" onClick="uf_Browse('dledir_search_quick.asp');" > My code is as follows: br = mechanize.Browser() br.open(BASE_URL) br.select_form(name='frmSearchQuick') resp = br.click(name='btSearchTop') I've also tried the last line as: resp = br.submit(name='btSearchTop') The error I get is: raise ControlNotFoundError("no control matching "+description) ControlNotFoundError: no control matching name 'btSearchTop', kind 'clickable' If I print br I get this: IgnoreControl(btSearchTop=) But I don't see that anywhere in the HTML. Any advice on how to submit this form?

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• How do you unit test web page authorization using ASP.NET MVC?

  - by Kevin Pang

  Let's say you have a profile page that can only be accessed by the owner of that profile. This profile page is located at: User/Profile/{userID} Now, I imagine in order to prevent access to this page by other users, you could structure your UserController class's Profile function to check the current session's identity: HttpContext.Current.User.Identity.Name If the id matches the one in the url, then you proceed. Otherwise you redirect to some sort of error page. My question is how do you unit test something like this? I'm guessing that you need to use some sort of dependency injection instead of the HttpContext in the controller to do the check on, but I am unclear what the best way to do that is. Any advice would be helpful.

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• C# parsing txt files IF name format is desired format

  - by jakesankey

  OK, I have txt files that I am parsing and saving into a sql db. The names are formatted like R306025COMP_272A4075_20090929_080159.txt However, there are a select few (out of thousands of files) with names that are formatted differently (particularly files that were generated as tests), example R306025COMP_SU2_TestBottom_20090915_101441.txt The reason this causes a problem for me is that I am using Split('_')[1,2,etc] to extract the R number, the 272A4075 portion, and the 20090929 (date) portion. When the application comes across the oddly named files, it fails because it is trying to parse 'TestBottom' as a date and inserts 'SU2' instead of the 272 number. Basically I want the app to recognize that if the file's name is not formatted like my first example, skip it. Any advice?

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• onclick form submit, open jQuery loading image until form submit complete

  - by Jackson

  Hi Team, Can you offer a bit of advice. I am using a hosted SAAS CMS solution that enables you to create basing apps with a web apps system. I have created a form for members to submit a bunch of images and content to their own area. Everything is working great except if the images being submitted via the form are large, it takes ages for the form to submit and go to the thank you page. I am already using jQuery UI to split the form in to 5 steps and using the jQuery facebox plugin for instructional popups. My question is, what would be the best way to display a loading gif (in facebox or in another suggested overlay) while the form is being submitted? Thanks for your help! Jack

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• BrowserField or CustomControls? What is the best to use when submitting and fetching data from web?

  - by SIA

  Hi Everybody, I am unable to decide whether what to use for my blackberry application. I am developing an application for Blackberry Device. This application send and recieves data from website. Thats the only functionality. I wanted to know what the best approach to go with. Shall i use BrowserField and display html in the application?? OR Shall i develop the custom controls and update the UI with the data fetched from the web?? Please Suggest, advice. thanks SIA

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• Need multiple views to respond to a touch event in an iPhone app

  - by Joel

  Setup: I have two views that I need to respond to the touch event, and they are layered out on top of one another. View 1 is on top of View 2. View 2 is a UIWebView. View 1 is sublclassed to capture the touch event. My problem is that if I try to call the UIWebView event handlers (touchesBegan: and touchesEnded:) from within the event handlers of View 1, which is the first responder, nothing happens. However if I set View 1 to userInteractionEnabled = NO, then the touch goes through that view and is processed properly by the 2nd view. Any ideas on how I can have 2 views respond to a touch event? Unfortunately the 2nd view is a UIWebView, so I need to actually call the event handler and not a different method, etc... Thanks in advance for any advice, Joel

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