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• Environment Variables in C

  - by tpar44

  I know this type of question has been asked a lot but none of the answers seem to help. I set an environment variable through setenv() function call in Ubuntu Linux. However, the program doesn't seem use this environment variables. If I use getenv() it gets the correct value but the output to the program is wrong. However, when I use export BLOCKSIZE=512 in the shell, the output to the program is correct. I am not spawning different processes from the program. Below is only a code snippet of what I am doing, it is not my whole program. Is there any reason for this?

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• Zend Framework 2 without MVC

  - by Luke

  I'm currently using Zend Framework 2 for all my web tier development using the MVC module that's shipped with the framework. However, I want to implement my business logic in a separate layer, call it the business tier which is a non HTTP layer and expose it through AMQP, and I'd like to reuse my knowledge of PHP for implementing this. Since there is a lot of "stuff" that I need in this business layer such as configuration, a service manager, database access, etc, etc, I'd like to use all the goodies shipped with Zend Framework 2 for this. Are there any examples or tutorials out there on how to build a Zend Framework 2 application that is not build for the web tier and doesn't require the MVC module?

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• Equivalence Classes LISP

  - by orcik

  I need to write a program for equivalence classes and get this outputs... (equiv '((a b) (a c) (d e) (e f) (c g) (g h))) => ((a b c g h) (d e f)) (equiv '((a b) (c d) (e f) (f g) (a e))) => ((a b e f g) (c d)) Basically, A set is a list in which the order doesn't matter, but elements don't appear more than once. The function should accept a list of pairs (elements which are related according to some equivalence relation), and return a set of equivalence classes without using iteration or assignment statements (e.g. do, set!, etc.). However, set utilities such as set-intersection, set-union and a function which eliminates duplicates in a list and built-in functions union, intersection, and remove-duplicates are allowed. Thanks a lot!

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• Best approach to creating a database driven Java website?

  - by Craig Whitley

  I'm fairly new to programming and new to java, but I'd like to jump in the deep end with a little database driven website project. I've read quite a lot about requirements in the 'real world' requesting experience with Spring and Hibernate, so I have those installed on netbeans and a project created (if I hit run I get the default spring page). Now I just need a little guidance as to where to start designing my app (please tell me if I'm getting in a bit too over my head for a beginner!). Should I start off with my classes? - create all my classes as they map to my database tables and decide which attributes and methods each will require? Can anyone suggest any good books for maybe.. making a java based website from scratch (i.e. from design right through to deployment) that might be useful for a beginner? Any help appreciated thanks.

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• Force reload/refresh when pressing the back button

  - by FlyingCat

  I will try my best to explain this. I have an application that show the 50+ projects in my view page. The user can click the individual project and go to the update page to update the project information. Everything works fine except that after user finish updating the individual project information and hit 'back' button on the browser to the previous view page. The old project information (before update) is still there. The user has to hit refresh to see the updated information. It not that bad, but I wish to provide better user experience. Any idea to fix this? Thanks a lot.

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• Google Pie Chart and Bar Chart (both Interactive) not showing labels.

  - by iRubens

  I'm trying to put Google's BarChart and PieChart both the client side version, and i'm experiencing some problems with the labels over the pie and the labels on the left of the vertical axis (of the bar chart). I checked the code a lot of times and it seems to be like that you can see in the examples. I've tried the same page on Firefox and Chrome and it shows the labels without problems. If i try the examples on IE8 the labels are shown but not in my page. Sincerely I've not any idea where to start to fix this thing. Someone can help me or give me an advice? Thanks in advance.

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• Download and replace Android resource files

  - by Casebash

  My application will have some customisation for each company that uses it. Up until now, I have been loading images and strings from resource files. The idea is that the default resources will be distributed with the application and company specific resources will be loaded from our server after they click on a link from an email to launch the initialisation intent. Does anyone know how to replace resource files? I would really like to keep using resource files to avoid rewriting a lot of code/XML. I would distribute the application from our own server, rather than through the app store, so that we could have one version per company, but unfortunately this will give quite nasty security warnings that would concern our customers.

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• advanced search with mysql

  - by Arsenal

  I'm creating a search function for my website where the user can put in anything he likes in a textfield. It get's matched against anything (name, title, job, car brand, ... you name it) I initially wrote the query with an INNER JOIN on every table that needed to be searched. SELECT column1, column2, ... FROM person INNER JOIN person_car ON ... INNER JOIN car ... This ended up in a query with 6 or 8 INNER JOINs, and a whole lot WHERE ... LIKE '%searchvalue%' Now this query seems to cause a time'out in MySql, and I even got a warning from my hosting provider that the queries just taking up too many resources. Now obviously I'm doing this very wrong, but I was wondering how the correct approach to these kind of search functions is. Thanks!

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• C++ Pointers to functions.

  - by Andy Leman

  using namespace std; int addition (int a, int b) { return (a+b); } int subtraction (int a, int b) { return (a-b); } int operation (int x, int y, int (*functocall)(int,int)) { int g; g = (*functocall)(x,y); return(g); } int main() { int m,n; int (*minus)(int,int) = subtraction; m = operation (7,5,addition); n = operation (20,m,minus); cout << n; return 0; } Can anybody explain this line for me int (*minus)(int,int) = subtraction; Thanks a lot!

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• How to quantify your "slow" development machine?

  - by lance

  ( Please provide the question this one duplicates. I'm disappointed I couldn't find it. ) My development machine is "slow". I wait on it "a lot". I've been asked by decision makers who want to help to fairly and accurately measure that time. How do you quantify the amount of time you spend waiting on the computer (during compiles, waiting for apps to open every day, etc). Is there software which effectively reports on this sort of thing? Is there an OS metric (I/O something something, pagefile swapping frequency, etc, etc) that captures and communicates this particularly well? Some sort of benchmark you'd recommend me testing against?

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• In your opinion what web technology would be best suited for building dropdown menus?

  - by LondonGuy

  What I need is a slide menu that is activated by one click. The menu then appears and doesn't disappear until user clicks any where else on the current page. I don't require any effects but need something reliable that I can style with ease, put a thumbnail of a photo inside change dimensions, add mouse over effects etc. I've done a several searches on google and quite a lot of options are coming up and I'm not too sure which would be best for me. I've seen some people suggestion html + css3 and others suggest jquery. Does any of these options have a benefit over the other? I would appreciate your opinions and maybe some links thanks.

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• WPF, convert Path.DataProperty to Segment objects

  - by user275587

  I was wondering if there was a tool to convert a path data like "M 0 0 l 10 10" to it's equivalent line/curve segment code. Currently I'm using: string pathXaml = "<Path xmlns=\"http://schemas.microsoft.com/winfx/2006/xaml/presentation\" xmlns:x=\"http://schemas.microsoft.com/winfx/2006/xaml\" Data=\"M 0 0 l 10 10\"/>"; Path path = (Path)System.Windows.Markup.XamlReader.Load(pathXaml); It appears to me that calling XamlParser is much slower than explicitly creating the line segments. However converting a lot of paths by hand is very tedious.

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• Java long task - Did it stop writing to file?

  - by rockit

  I am writing a lot of data to a file, and while keeping my eye on the file it eventually stopped growing in size. Essentially my task is getting information from a database, and printing out all non-unique values in column A. Since there are many rows to the database table, and the database table is across my network, this is taking days to complete. Thus I'm concerned that since the file isn't growing, that it isn't actually writing to the file anymore. Which is odd, I have no "catch"'s in my code, so if there was a problem writing to file, wouldn't it have thrown an error?! Should I let the task complete (estimate 2-3 days from today), or is there something else that I don't know going on here making my application not write to the file?! my algorithm goes something like this Declare file Create new file Open file for writing get database connection get resultset from database for each row in the resultset - write column "A" to file - if row# % 100000 then write to screen "completed " + row# + " rows" when no more rows exist close file write to screen - "completed"

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• The cost of finalize in .Net

  - by Jules

  (1) I've read a lot of questions about IDisposable where the answers recommend not using Finalize unless you really need to because of the process time involved. What I haven't seen is how much this cost is and how often it's paid. Every millisecond? second? hour, day etc. (2) Also, it seems to me that Finalize is handy when its not always known if an object can be disposed. For instance, the framework font class. A control can't dispose of it because it doesn't know if the font is shared. The font is usually created at design time so the user won't know to dispose it, therefore finalize kicks in to finally get rid of it when there are no references left. Is that a correct impression?

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• Simple rails routing / url question

  - by justinbach

  I'm using Ryan Bates' nifty authentication in my application for user signup and login. Each user has_many :widgets, but I'd like to allow users to browse other users' widgets. I'm thinking that a url scheme like /username/widgets/widget_id would make a lot of sense--it would keep all widget-related code in the same place (the widgets controller). However, I'm not sure how to use this style of URL in my app. Right now my codebase is such that it permits logged-in users to browse only their own widgets, which live at /widgets/widget_id. What changes would I need to make to routes.rb, my models classes, and any place where links to a given widget are needed? I've done Rails work before but am a newb when it comes to more complicated routing, etc, so I'd appreciate any feedback. Thanks for your consideration!

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• powershell loop

  - by jvcoach23

  I'd like to use a windows powershell to run a batch file every x number of seconds. So it's the same batch file being run over and over again. I've done some looking but can't find what i'm looking for. It's for something that i want to run on a windows xp machine. Windows Schedular i've used lot of times before for somethign similar, but for some reason schedular only runs once.. then no more. i also don't want to have the batch file call itself, because it will error out after it runs so many times. thanks shannon

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• Can't find Peopleware anywhere?

  - by ooo

  Many folks say that Peopleware is one of the best books for software professionals and managers, as I see a lot of people recommending it in the "have to read list." The strange thing is that I can't find a bookstore anywhere that actually has it. I found it on Amazon, but Borders, Barnes & Nobles, etc. don't have it and keep telling me it's out of print. Can anyone shed some light on whats going on here? Amazon doesn't stock it, it says its available from a few 3rd party sellers, but I tried two of them and both of them eventually refunded me and cancelled the order after stalling for a month.

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• I need to view the docx file from mysql database on screen and highlight the keyword

  - by Jensen Aw

  I would like to ask could I collect the doxc file that i had upload before and display only on screen but not download and also i would like to highlight the keywords? I have successfully upload and download the docx file and it look prefect. But how if I would like to just display on screen in php or html format and highlight the keyword. The problem I got now is when I collect the docx file from mysql and echo on page it gave me all messy words and I've try a lot of methods still couldn't get the docx file print on screen. Anyone please help me, I'm totally lost and hopeless...

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• Possible loss of precision / [type] cannot be dereferenced

  - by Samuel

  I have been looking around a lot but i simply can't find a nice solution to this... Point mouse = MouseInfo.getPointerInfo().getLocation(); int dx = (BULLET_SPEED*Math.abs(x - mouse.getX()))/ (Math.abs(y - mouse.getY()) + Math.abs(x - mouse.getX()))* (x - mouse.getX())/Math.abs(x - mouse.getX()); In this constellation i get: Possible loss of precision, when i change e.g (x - mouse.getX()) to (x - mouse.getX()).doubleValue() it says double cannot be dereferenced, when i add intValue() somewhere it says int cannot be dereferenced. What's my mistake? [x, y are integers | BULLET_SPEED is a static final int] Thanks!

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• What data is sent to Google Analytics?

  - by Darryl Hein

  Has anyone found any documentation or research about what data is transfered to Google Analytics when it's added to a site. The main thing I'm wondering about is post data, but the details of exactly what is sent would be useful. I'm considering implementing it on a sites that have a lot of private data on them. I'm wondering what data Google will capture, if any. (The sites are login only.) I'm needing proof so I can provided to the users.

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• Django 1.2 - Pb with a form in a template (WSGIRequest)

  - by Tom

  Hi, I'm trying to display a form on a template, but I get a fantastic error : Caught AttributeError while rendering: 'WSGIRequest' object has no attribute 'get' The error is in this line : {% for field in form.visible_fields %} My view : def view_discussion(request, discussion_id): discussion = get_object_or_404(Discussion, id=discussion_id) form = BaseMessageForm(request) return render(request,'ulule/discussions/view_discussion.html', { 'discussion':discussion, 'form':form, }) My form : class BaseMessageForm(forms.Form): message_content = forms.CharField(widget=forms.HiddenInput()) My template : <form action="" method="post"> {% csrf_token %} {% for field in form.visible_fields %} <div class="fieldWrapper"> {% if forloop.first %} {% for hidden in form.hidden_fields %} {{ hidden }} {% endfor %} {% endif %} {{ field.errors }} {{ field.label_tag }}: {{ field }} </div> {% endfor %} <p><input type="submit" value="Send message" /></p> </form> Thanks a lot for your help !

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• Can't create a MySQL query that generates 4 rows for each row in the table it references.

  - by UkraineTrain

  I need to create a MySQL query that generates 4 rows for each row in the table it references. I need some of the information in those rows to repeat and some to be different. In the table each row stands for one day. I need to break the day up in 6 hour increments, hence the four rows for each entry. I need to create one column which for each day will have '12AM', '6AM', '12PM', and '6PM' values and another column will have the corresponding numeric values calculated for those entries. Thanks a lot in advance and I will really appreciate any help on this.

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• Local Live Quicktime Video Broadcast, latency?

  - by Snowwire

  I'm looking into the feasibility of using a local server to distribute live video of a conference to delegates in the same room. They would still hear the live audio coming from the speaker, so only the video would be streamed. I was considering a Darwin Steaming Server (a lot of iPhone users to support) and encoding with H.264. My main concern is latency across the network. Even with everything running locally, would there be lip sync issues between the live audio and the 'live' video stream? It feels like there will be problems given the encoding, broadcasting, decoding to be completed, but I've never done any like this before so thought I would check. Thanks

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• Handling hundreds of dependencies with ant

  - by Roberto

  Hi guys, I have to refactor an ant xml file. Basicly I have one big task that checkouts (using cvs) a lot of dependencies, build them, and then copy all the jar/wsdl generated by building them to a directory that I specify. If one dependency version changes, I have to change the name in at least 3 places on the xml file (cvs checkout, build, copy). What I'd like to have is just a single place where I can specify my dependencies name, without having to search & replace the dependency name through the code. One of the problems is that the cvs project could be /path1/path2/project with tag=v12 but then the jars generated by the single project build could be several with different names, so it seems to be a bit complicated. Do you have any idea on how I can get this done?

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• Is it bad practice to assign a css class for the sole purpose of finding it with jQuery?

  - by user187305

  I'm using ASP.NET, not the newest one with that clientIdMode stuff. So, the control ids are generated and funky. There are lots of ways of passing ids around, but lately I've been assigning a 'fake' css class to the control I'm interested in. Then in a js file I use jQuery to find the control. Is this bad practice? It seems a lot like the ajaxControlToolkit's behaviorId to me... Is the behaviorId bad practice as well?

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