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  • iPhone: Creating a hierarchy-based table navigation.

    - by Jack Griffiths
    Hi there, I've tried to ask this before, but nothing got answered. Basically, I would like someone to explain to me how to create a table, which when a cell is tapped, pushes the user to the next view for that cell. I have this so far: Click here to view what I have. I would further like to, say when CSS is tapped, it goes to a new view which has another table in it. This table would then take the user to a detail view, which is scrollable and you can switch pages through it. I would appreciate longer, more structured tutorials on how to do each and every bit to get it to work. Here's my array in my implementation file: - (void)viewDidLoad { arryClientSide = [[NSArray alloc] initWithObjects:@"CSS", @"HTML", @"JavaScript", @"XML", nil]; arryServerSide = [[NSArray alloc] initWithObjects:@"Apache", @"PHP", @"SQL", nil]; self.title = @"Select a Language"; [super viewDidLoad]; } and my .h: @interface RootViewController : UITableViewController <UITableViewDelegate, UITableViewDataSource> { IBOutlet UITableView *tblSimpleTable; NSArray *arryClientSide; NSArray *arryServerSide; } My current code crashes the script, and this error is returned in the console: Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '-[UITableViewController loadView] loaded the "NextView" nib but didn't get a UITableView.' If that error is the source of why it's not pushing, then an explanation of how to remedy that would also be appreciated Many thanks, Jack

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  • What is recommended minimum object size for gzip benefits?

    - by utt73
    I'm working on improving page speed display times, and one of the methods is to gzip content from the webserver. Google recommends: Note that gzipping is only beneficial for larger resources. Due to the overhead and latency of compression and decompression, you should only gzip files above a certain size threshold; we recommend a minimum range between 150 and 1000 bytes. Gzipping files below 150 bytes can actually make them larger. We serve our content through Akamai, using their network for a proxy and CDN. What they've told me: Following up on your question regarding what is the minimum size Akamai will compress the requested object when sending it to the end user: The minimum size is 860 bytes. My reply: What is the reason(s) for why Akamai's minimum size is 860 bytes? And why, for example, is this not the case for files Akamai serves for facebook? (see below) Google recommends to gzip more agressively. And that seems appropriate on our site where the most frequent hits, by far, are AJAX calls that are <860 bytes. Akamai's response: The reasons 860 bytes is the minimum size for compression is twofold: (1) The overhead of compressing an object under 860 bytes outweighs performance gain. (2) Objects under 860 bytes can be transmitted via a single packet anyway, so there isn't a compelling reason to compress them. So I'm here for some fact checking. Is the 860 byte limit due to packet size the end of this reasoning? Why would high traffic sites push this lower/closer to the 150 byte limit... just to save on bandwidth costs, or is there a performance gain in doing so?

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  • Convert NSFileSystemSize to Gigabytes

    - by AWright4911
    I need to convert NSFileSystemSize to Gigabytes. NSDictionary * fsAttributes = [ [NSFileManager defaultManager] fileSystemAttributesAtPath:NSTemporaryDirectory()]; NSNumber *totalSize = [fsAttributes objectForKey:NSFileSystemSize]; NSString *sizeInGB = [NSString stringWithFormat:@"\n\n %3.2f GB",[totalSize floatValue] / 107374824]; //returns 69.86 GB any ideas why it doesnt return at leat 8.0GB's?

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  • Too many connections RealityRP Emulator

    - by Chase Robinson
    I've been having a problem with the stability of my role play emulator, every now and then, after awhile of using a command such as :shoot x , it will disconnect due to too many connections, or it will disconnect when people are messaging etc.. I've debugged it, and ran while playing it, it disconnected with the Too Many Connections error, Connection.Open(); Is the code that is causing the issue, how do i fix this?

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  • What's your motivation to help others at stackoverflow?

    - by Bernhard V
    Hi! I gotta say that this site is really great because it helped me a lot at my job. I'm mostly the one asking the questions rather than answering it. Now I'd like to know what's your motivation to help others of whom you only know their nicknames? Because contrary to other communities on the Internet, this site lacks things like a message board where you can talk about all things in life or a function for private messaging. And in my opinion these two things normally help in building kind of a "social" environment. Also stackoverflow has probably lot's of users and is therefore not that tight-knitted. Maybe you can share some your thoughts with me.

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  • Stacks in C++

    - by MarkPearl
    So some more basics… One of the things you will be taught at any college after conquering arrays is different derivatives of collections. Stack is one of the simplest of those and very useful… A stack is a LIFO (last in first out) data structure and has at least two basic method calls – push & pop. Push, “pushes” an item on the top of the stack. Pop, removes the top most item off the stack. Because all elements on a stack are of the same type, one can use an array to implement a stack or a linked list. With the array based approach, the first element in a stack would be the first element in the array, the second on the stack would be the second on the array, etc. One limitation with an array implementation of a stack is that unless the array is dynamic, one would have to have a preset max stack size (based on the bounds of the array). Linked lists is another approach that gets past this boundary by allowing you to dynamically grow or shrink a collection of data. Stacks have many applications… a typical computer science example would be Postfix Expression Calculator, where the LIFO principle is maintained.

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  • When to use std::size_t?

    - by nhaa123
    Hi, I'm just wondering should I use std::size_t for loops and stuff instead of int? For instance: #include <cstdint int main() { for (std::size_t i = 0; i < 10; ++i) // std::size_t OK here? Or should I use, say, unsigned int instead? } In general, what is the the best practice regarding when to use std::size_t?

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  • VB.NET: Scrollbar "button"?

    - by Omega
    I plan on using a scrollbar for, well, scrolling an image. The image is 200x500, however, the only visible area is 200x250. So I set the max value to 250, and the min value to 0. The idea is that if I drag the scrollbar's button to the bottom, 250 pixels will have moved for the image, right? But wait, the scrollbar's button is.... very small. And the scrollbar is actually pretty long. Is there a way to make the scrollbar's button longer?

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  • Offering text in different sizes

    - by Simon R
    This is a general question of sorts, but do you think that it's important to offer text resizing tools on a website, which in essense only effect text as it seems that most browsers offer text resising or more commonly zooming?

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  • Problem with large Canvas in Silverlight

    - by Fury
    Hi, I am developing (using Silvelight 3) an aplication that creates some kind of timeline and places objects on it. For this purpose I need a really large Canvas (up to 2000000 pixels width) with long lines on it, but whenever I create Canvas even 40000 pixels width it behaves very strangely, randomly disappearing. I have found a post with the description of the exactly same problem on silverlight forums and another one here on the stackoverflow. It seems that is a known problem since silverlight 2, but I can't find any good workaround. Does anybody know such workaround or can check is it still an issue in Silverlight 4? Thanks in advance.

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  • How many developers are there in the world?

    - by Nick Hodges
    What is the total number of software developers in the world? And to respond to the inevitable "How do you define a software developer?" -- I'll answer two ways: Define it as "Anyone who writes code to make a computer do something he wants done". Define it however you like and then answer the question References to studies or more authoritative sources of information would be greatly appreciated.

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  • Having two IP Routes/Gateways of last Resort on an HP Switch

    - by SteadH
    We have an HP Layer 3 Switch that is doing IP routing between vlans. The general set up is that the switch has an IP address on each VLAN and IP routing is enabled. On our servers VLAN, we have a firewall that has a connection to the outside world. To set a IP route on the HP router, we use IOS command ip route 0.0.0.0 0.0.0.0 192.168.2.1 where 192.168.2.1 is the address of our firewall, and the zeros essentially mean to route all traffic that the switch doesn't know what to do with out the firewall as a gateway. We're in the middle of an ISP and firewall change. I set up the new firewall and ran the IOS command ip route 0.0.0.0 0.0.0.0 192.168.2.254 (the address of the new firewall). Things started working nicely. When I reviewed the configuration of the switch though, I noticed that it did not replace the previous ip route command, but just added another route. Now, I know how to remove the old firewall route (no ip route 0.0.0.0 0.0.0.0 192.168.2.1), but what is the effect of having these two 0.0.0.0 routes? Is it switch implosion? Will a server just respond back over the route it receives the request from? I've read elsewhere that having two default gateways is an impossibility by definition, but I'm curious about this situation that our switch allowed. Thanks!

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  • Does Java Mac OSX native look and feel respect UIManager font changes?

    - by Erik Lickerman
    I have a java applet and the only look and feel that works properly is the native mac one. I wanted to make the fonts a bit larger and tried using the standard UIManager methods UIManager.put("Label.font", new Font("Georgia", Font.PLAIN, 18)); This produces no change. It does not throw an exception, of course. Does anyone know if the native mac look and feel ignores these? I know there are specific ways to make controls different sizes on mac but these only seem to make them smaller. You cannot make the controls larger than regular.

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  • JBoss envers and huge audit tables

    - by LeChe
    All, I am auditing my JEE application with JBoss Evers and the nature of my application causes the audit table to grow very fast. The historic data is queried infrequently and access time is not really an issue, apart from the data from the last week. This data IS queried frequently and access needs to be fast. Ideally, I would split the data and distribute it over two tables, with the older data in compressed format. Unfortunately, Envers does not allow spreading data over multiple tables as far as I can tell from the docs. Does somebody have any idea what would be the best way to achieve this (if possible while still using Envers)? Cheers, LeChe

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  • Android: How to make launcher always open the main activity instead of child activity? (or otherwise

    - by yuku
    I have activities A and B. The A is the one with LAUNCHER intent-filter (i.e. the activity that is started when we click the app icon on home screen). A launches B using startActivity(new Intent(A.this, B.class)). When the user has the B activity open, and then put my application into the background, and later my application's process is killed, when the user starts my application again, B is opened instead of A. This caused a force close in my app, because A is the activity that initializes the resources my app needs, and when B tried to access the uninitialized resources, B crashes. Do you have any suggestions what should I do in this situation?

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  • Web Programming language for very large lists?

    - by behrk2
    Hello, In your experience, what is the best web programming language used to handle sorting and comparison of very large lists (ie tens of thousands of email addresses)? I am most familiar with PHP. I think that it could get the job done, but I'm unsure of other languages and if there might be a bettor suitor. Thanks!

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