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  • Is Programming Right for me?

    - by L1th1um
    I'm interested in programming, but it seems to me that I can't get into it. Every time I've tried to learn a language and stuff by looking through tutorials or books I'd never get past the part where I use the syntax to make something. And by interest, I mean that I read stack overflow a lot, coding horror, and stuff but the actual coding part is hard for me to get into. Did anybody start this way? How did you get past this block?

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  • Draw background for each cell in ObjectListField

    - by user315647
    Hi all, I am creating a blackberry apllication which pre-dominantly uses ObjectListFields..All i need now is to draw an image as a background for each cell. I know this is quiet possible but i am not getting hold of the procedure. if i draw bitmap in drawlistrow() function the bluehighlight gets into the background and the cell highlight becomes very hard to read......can anybody help me with a code snippet to get through this problem ....thanks...

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  • Directory Search

    - by xarzu
    This is a simple question and I am sure you C Sharp Pros know it. If you want to grab the contents of a directory on a hard drive (local or otherwise) in a C Sharp program, how do you go about it?

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  • naming a screen session in linux

    - by Aly
    Hi, I am running multiple screens from one ssh connection, when I list all of the screens via screen -ls the names are not very descriptive and when I have multiple screens it becomes hard to remember what is running on each. Does anyone know how to name these sessions (preferably when creating the screen). Thanks

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  • F# for C#/Haskell programmer

    - by Maciej Piechotka
    What is recommended tutorial of F# for Haskell programmer? F# seems to borrow a lot from Haskell but there are little traps which makes hard to write. Generally I need walkthrough the F# which would not explain what is the difference between mutable data and immutable (Haskell is much more strict in this area) etc. I know C# a little so I know more or less what .Net is about as well.

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  • Logvat viewer in Eclipse flickers annoyingly

    - by petersohn
    In the logcat viewer in Eclipse, if it is set to filter messages coming from the application I am currently debugging, the list flickers annoyingly. My guess that it reloads the list every time a log message arrives from my device, even if it is not displayed because of the filter. However, it makes reading log messages very hard. Is there any way to counter this bug? Or is there an alternate logcat viewer for Android?

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  • Why use Buildr instead of Ant or Maven?

    - by Scott Markwell
    http://buildr.apache.org/ http://ant.apache.org/ http://maven.apache.org/ What does another build tool targeted at Java really get me? Is it so hard to write a plugin using Java versus writing it in Ruby? If you use Buildr over another tool, why? Side question: How many build systems does the Apache foundation need targeted at Java?

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  • Fabfile with support for sqlalchemy-migrate deployments?

    - by Chris Reid
    I have database migrations (with sqlalchemy-migrate) working well in my dev environment. However, I'm a little stumped about how to integrate this into my deployment process. I'm using fabric for deployment but having some trouble scripting the migrations part. The path to the to migrations directory in site-packages is dynamic (due to changing egg version number) and I'd rather not hard code my db password into the fabfile. Does anyone have a fabfile that plays nicely with sqlalchemy-migrate?

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  • Relational Clausal Logic question: what is a Herbrand interpretation

    - by anotherstat
    I'm having a hard time coming to grips with relational clausal logic, and I'm not sure if this is the place to ask but it would be help me so much with revision if anyone could provide guidance with the following questions. Let P be the program: academic(X); student(X); other_staff(X):- works_in(X, university). :-student(john). :-other_staff(john). works_in(john, university) Question: Which are the Herbrand interpreations of P? AS

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  • When using delegates, need better way to do sequential processing

    - by Padawan
    I have a class WebServiceCaller that uses NSURLConnection to make asynchronous calls to a web service. The class provides a delegate property and when the web service call is done, it calls a method webServiceDoneWithXXX on the delegate. There are several web service methods that can be called, two of which are say GetSummary and GetList. The classes that use WebServiceCaller initially need both the summary and list so they are written like this: -(void)getAllData { [webServiceCaller getSummary]; } -(void)webServiceDoneWithGetSummary { [webServiceCaller getList]; } -(void)webServiceDoneWithGetList { ... } This works but there are at least two problems: The calls are split across delegate methods so it's hard to see the sequence at a glance but more important it's hard to control or modify the sequence. Sometimes I want to call just GetSummary and not also GetList so I would then have to use an ugly class-level state variable that tells webServiceDoneWithGetSummary whether to call GetList or not. Assume that GetList cannot be done until GetSummary completes and returns some data which is used as input to GetList. Is there a better way to handle this and still get asynchronous calls? Update based on Matt Long's answer: Using notifications instead of a delegate, it looks like I can solve problem #2 by setting a different selector depending on whether I want the full sequence (GetSummary+GetList) or just GetSummary. Both observers would still use the same notification name when calling GetSummary. I would have to write two separate methods to handle GetSummaryDone instead of using a single delegate method (where I would have needed some class-level variable to tell whether to then call GetList). -(void)getAllData { [[NSNotificationCenter defaultCenter] addObserver:self              selector:@selector(getSummaryDoneAndCallGetList:)                  name:kGetSummaryDidFinish object:nil];     [webServiceCaller getSummary]; } -(void)getSummaryDoneAndCallGetList { [NSNotificationCenter removeObserver] //process summary data [[NSNotificationCenter defaultCenter] addObserver:self              selector:@selector(getListDone:)                  name:kGetListDidFinish object:nil];     [webServiceCaller getList]; } -(void)getListDone { [NSNotificationCenter removeObserver] //process list data } -(void)getJustSummaryData { [[NSNotificationCenter defaultCenter] addObserver:self              selector:@selector(getJustSummaryDone:) //different selector but                  name:kGetSummaryDidFinish object:nil]; //same notification name     [webServiceCaller getSummary]; } -(void)getJustSummaryDone { [NSNotificationCenter removeObserver] //process summary data } I haven't actually tried this yet. It seems better than having state variables and if-then statements but you have to write more methods. I still don't see a solution for problem 1.

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  • how to find the percentage of free space for mapped drives ?

    - by Arunachalam
    Is it possible to programatically find the free space available in mapped drives? How to find the percentage of free space in your drive using ms-dos. It may be easy to find the free space for a drive in ur hard disc but i need to find the free-space of mapped drives. I have mapped some file servers in my systems. It is possible to see this in My Computer, but how do show it in a command prompt?

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  • YQL How to use wildcard in XPath

    - by uku
    Hello, I have a malformed page to scrape, and have had a hard time getting the correct XPath for YQL. I can scrape individual fields that I need using, for example: //*[@id="cell_12345"] But what I really need to do is return all elements who's ID begins with cell_. Something like: //*[@id="cell_"*] How do I do this? Also, if anybody can point me to a good XPath reference it would be very helpful. Thanks!

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  • Keeping track of changes - Django

    - by RadiantHex
    Hi folks!! I have various models of which I would like to keep track and collect statistical data. The problem is how to store the changes throughout time. I thought of various alternative: Storing a log in a TextField, open it and update it every time the model is saved. Alternatively pickle a list and store it in a TextField. Save logs on hard drive. What are your suggestions?

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