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• Creating a page selector with JSP/JSTL

  - by zakSyed

  I am working on a project where I am required to build a page somewhat similar to the one you see when you visit a website like blockbuster. When you click on browse more you are taken to a page with a bar on top with different page numbers and a drop down to select the number of pages you want to view on that page. I want to include a feature like that on my page but I am not sure where to start. In my page I have list of 200 items which I want to display page by page. I was suggested to use custom tags, but is there a more simpler or efficient way to create that functionality. My web application uses Spring MVC framework and is coded entirely in Java. Any suggestions will be appreciated.

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• In rails whats the best way to get the site that a user came from? I am getting conflicting info.

  - by kidbrax

  If i enter a url directly into the address bar of the browser, i get the following results: logger.debug ENV['HTTP_REFERER'] // => logger.debug request.referrer // => / So the first one gives me a blank result which is what I expected but the second gives me the root? Is this correct? It seems from the docs (http://api.rubyonrails.org/classes/ActionController/AbstractRequest.html#M000478) that they should return the same thing. And secondly, why does it return the root, if there was no referrer.

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• How can I call a Perl package I define in the same file?

  - by Robert S. Barnes

  I need to define some modules and use them all in the same file. No, I can't change the requirement. I would like to do something like the following: { package FooObj; sub new { ... } sub add_data { ... } } { package BarObj; use FooObj; sub new { ... # BarObj "has a" FooObj my $self = ( myFoo => FooObj->new() ); ... } sub some_method { ... } } my $bar = BarObj->new(); However, this results in the message: Can't locate FooObj.pm in @INC ... BEGIN failed... How do I get this to work?

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• Using CSS instead of tables to create a centered column of images

  - by pcampbell

  Consider the task of replacing this table with CSS stylings: <table border="1"> <tr><td align="center"> <img src="foo" /> </td></tr> <tr><td align="center"> <img src="bar" /> </td></tr> <tr><td align="center"> <img src="bat" /> </td></tr> </table> The desired output is 3 images stacked on top of each other. The images are centered on the widest of them all. How would you style this markup with <div> around those <img> tags with CSS to achieve the same look?

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• fetching savedInstanceState values, nullpointerexception

  - by Johan

  @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main2); savedInstanceState.putString("foo", "bar"); } @Override public void onRestoreInstanceState(Bundle savedInstanceState) { super.onRestoreInstanceState(savedInstanceState); String myString = savedInstanceState.getString("foo"); Log.i("debug", "saved data: " + myString); } Im trying to preserve some values in an activity, but i recieve the following error: 06-23 23:09:44.038: E/AndroidRuntime(17584): java.lang.RuntimeException: Unable to start activity ComponentInfo{se.johanberntsson.activitytest/se.johanberntsson.activitytest.TestActivity}: java.lang.NullPointerException What did I miss here? Thanks

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• Jquery - how to create a sophisticated sidebar that smoothly scrolls down with you

  - by Gal

  I probably couldn't depict it better in the title (and if it has a term let me know), but just to quell the obscurity, I was referring to something like this. After you wait for the page to load, see how when you scroll down, the social media left bar stays fixed, but then when you scroll just enough that it meets your upper side, it sticks to it as you scroll further. I wanted to implement something corny and pretentious like that, so does anybody know a tutorial or a method to get that done in jquery? (I can probably do it myself, if I'm not mistaken, just need some sense of direction from savvy jqueryists). Is there a way to know when and how much a user scrolls? Can it be done with id's like the # url appendix to jump to a specific element? Just some ideas...

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• g++: how to specify preference of library path?

  - by Heinrich Schmetterling

  I'm compiling a c++ program using g++ and ld. I have a .so library I want to be used during linking. However, a library of the same name exists in /usr/local/lib, and ld is choosing that library over the one I'm directly specifying. How can I fix this? For the examples below, my library file is /my/dir/libfoo.so.0. Things I've tried that don't work: my g++ command is "g++ -g -Wall -o my_binary -L/my/dir -lfoo bar.cpp" adding /my/dir to the beginning or end of my $PATH env variable adding /my/dir/libfoo.so.0 as an argument to g++ Thanks.

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• MoveWindow API doesn't work well on Vista

  - by Dex Ilic

  Hello! I have an application on Vista which loops through all processes and finds associated main windows in order to move and resize them. The problem is that some windows get moved and resized and some don't. Also it even seems that moved and resized windows aren't moved and resized according to the MoveWindow function call because they are resized to title bar and all of them are on the same line (same y coordinate). Here's the sample code: IntPtr handle; Process[] processList = Process.GetProcesses(); int i = 0; foreach (Process process in processList) { handle = process.MainWindowHandle; if (handle != IntPtr.Zero) //If the process has window then move and resize it. { bool moveResult = MoveWindow(handle, i * 50, i * 50, 500, 500, true); i++; } } Is this because of Vista? What alternative should I use?

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• What do I put in my Ruby (JRuby) code to break into the debugger?

  - by Daryl Spitzer

  I'm familiarizing myself with some JRuby code, and I'd like to be able to place a breakpoint in the code and run (as usual) from the command-line, having it break into the debugger when it gets to that point. Is there something I can put in my code to force JRuby to break into the debugger? I've tried running jruby -r debug foo.rb (instead of the usual jruby foo.rb), and then setting a breakpoint with b bar.py:98, and then continuing. But the debugger stops every time there's an exception, and there seem to be a lot of them before it gets to the line of code I'm interested in. I'd like to be able to put the "break-into-debugger" line(s) in my code and run jruby foo.rb and have the first place the debugger stops be at that line. (i.e. I'm looking for the Ruby/JRuby equivalent of import pdb;pdb.set_trace() in Python.)

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• Correct way to textually report the remaining time on a long running process?

  - by Ryan

  So you have a long running process, perhaps with a progress bar, and you want a text estimate of the remaining time, eg: "5 minutes remaining" "30 seconds remaining" etc. If you don't actually want to report clock time (due to accuracy or resolution or update-rate issues) but want to stick to the text summary, what is the correct paradigm? Is "one minute" left displayed from 0 to 60 seconds? or from 1:00 to 1:59? Say there's 1:35 Left - is that "2 minutes remaining" or "1 minute remaining"? Do you just pare it down to "A few minutes left" when you're less than 3 minutes? What is the preferred (least user-frustrating) method?

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• [PHP] Variables loaded from a separate script are not defined within functions

  - by Goro

  Hello, I use settings.php to store general settings for my application. When I load this settings file, I can use the variables defined in settings.php in the script itself, but not within any functions I define in it. For example, in my class definition, myclass.php: <?php $preIP = dirname(__FILE__); require_once( "preIP/settings.php" ); class MyClass { ... public function foo() { echo $variable_from_settings; } } The code in the function foo() will not work (the variable will not be defined). The settings.php file looks like this: $variable_from_settings = "bar"; Thanks,

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• HTML anchor #bottom, only going half-way down page

  - by RewbieNewbie

  http://www.planet-tolkien.com/board/44/621/0/poll-suggestions It's due to the multiple "bottom of the page" anchor links on each post to the anchor name at the bottom of the page. I tried to solve this by using a unique id and name for the attributes: <a href="#bottom" id="4656" name="4656"> But this hasn't worked. Suggestions? P.S. Don't use the URL bar, yes that works. Visit the page and click on a link in a post that says "Bottom of the page". This is where it isn't working.

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• Front page 2003: how to line up forms vertically

  - by I2008

  Hi. I am trying to creating a form on Frontpage 2003 and right now all my boxes are all over the place, as shown below: Name: [----] Email: [----] I want the boxes to be like this: Name: [----] Email: [----] I have tried using table to line up the boxes but when it come to giving an ID using the 'Lable' on the 'Form' tool bar by highlighting the text box and 'Name', the table get highlighted and wont create an lable. I just want to line up vertically all the boxes and i am new to web design so i dont understand much about HTML or CSS. I dont think Frontpage 2003 has CSS. Can someone tell me how to line up all my boxes. Many thankz

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• Proper chart scaling in Reporting Services 2005

  - by lastas

  I'm developing a simple bar-chart in Reporting Services 2005 with a stored procedure as data-source. The values in this graph can be both positive and negative, and can span a very big range, and hence I cannot specify any non-dynamic scale that will work for all scenarios. The problem I'm facing is that the automatic scaling pretty much sucks. I get no line to show where the zero-point is, and the y-scale labels are from top to bottom: 8818 -191181 -391181 etc etc... So my question is, what is the best approach to make the scale more adapted to human reading? Is there any guide out there? Does reporting services 2008 handle this better? Also, moving away from Reporting Services is not really an option. I realize how to put values and expression in the max, min, and the gridline interval fields, although its more of a question what expressions I should put there.

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• C# chart control Performance with large amounts of data

  - by user3642115

  I am using a chart control with a range bar graph to basically make a gantt chart for lots of people and lots of projects, say about 1000 total series. The issue that I am running in to is that once I have all my data added to the chart, which takes some time but that is to be expected, and I go to scroll down on my graph it freezes the whole application and takes a while before it unfreezes and scrolls down. Is there any way to improve the performance of this? I tried adding the graph to a panel and growing the graph size dynamically and then scrolling down from the panel but that cause a whole plethora of other issues. Any tips for speeding this up? I don't think it is my code as it has already finished running when this issue happens. Thanks.

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• Retain Site Background and Switch Pages?

  - by yar

  I was about to redo a Rails site today using AJAX so that the background could remain in place. Then I thought, "that would be exactly like using frames," and then I thought about SEO consequences and I dropped the idea entirely and took a look around the Web. It turns out that few sites -- except for Google itself, which has the link bar at the top -- are doing this. It doesn't look impossible to do, but it's not exactly easy. Aside from Ajaxing, you have to think about updating the query-string and having SEO-friendly links (that actually don't work, but rather make background requests via Javascript). Will any of the new technologies -- HTML5, perhaps -- solve this problem and allow us to have a Web with background colors (and other static elements) that do not disappear momentarily between page refreshes? On the other hand, why are few devs doing this with current technologies? Is it just not a big deal, too complicated to implement, or....?

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• Help doing a dynamic sort?

  - by Kevin

  I have a notifications table which contains different types of notifications for different events. Inside the table is a notifications_type:string column that contains the type of notification, i.e. "foo" or "bar" or "oof" I want the user to be able to select what notifications they want to display, so there are checkboxes below the result that correspond to prefs_display_foo:boolean, prefs_display_bar:boolean in the User model. What is an elegant way for me to set the :conditions in the find to properly display the sorted results? Also, currently I have it as a method in the user, but how would I do it as a has_many :notifications, :conditions = .....

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• c++: what is a good idea for a list of strings?

  - by John

  I simply want to build an RPG and make it as neat as possible, I wish to define a pile of strings which I may want to edit later, so I tried something like this: enum {MSG_INIT = "Welcome to ...", MSG_FOO = "bar"}; But I just get errors, such as that MSG_INIT is not an integer! Why must it not be a string, are that what enums are only for? What do you think is the best way to define a pile of strings? In a struct called msg or something? I'm kinda new to all this so I'd really appreciate small examples.

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• Is there a way to specify the dimensions of a nested STL vector C++?

  - by zebraman

  I know vectors can be constructed to a predefined size vector<int> foo(4); But is there a way to specify the dimensions of nested vectors? vector< vector<int> > bar(4); Lets say I wanted a vector of size 4 containing vector's of size 4... like a 4x4 multidimensional array of ints?

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• Outlook 2007 plugin

  - by JL

  I am about to embark on my first outlook 2007 plugin. I would like to create a new tool bar that will have a button that will initially be disabled. When the user selects a message the button should be enabled... but only if the email is of a certain type of email... This is where I need your expert advice, is there a way to quickly flag an email in outlook, so that in the email select event you can look for a property of that email... for example... on_select if mail.type = "FromISP" then I would prefer not to use the from field.... the other thing is during the send process I need to set the flag, I am doing this again using .net so I have full control over how the mail is created. Any ideas would help... Thanks

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• Modal dialog not working in chrome/explorer yet works in firefox

  - by Mike Z

  I have the following modal dialog click function $("#foo").click(function(){$("#bar").dialog({ width: 400, modal: true, resizable: false, buttons:{ "Save": function(){ $.post('remote_foo.php', $('#waka').serialize(), function(data){ $('#list').html(data);}) $(this).dialog("close"); $('.dial').val(''); $('.url').val('http://'); }, "cancel": function(){ $(this).dialog("close"); } }//end of buttons }).('open');//end of jquery dialog })// end of click function It works fine in firefox but to be honest i dont even think my click function is set up right. 1)Is this the proper way to open the dialog with a click. 2) is there a specific reason that this would not work in chrome/internet explorer? (This is the jquery ui)

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• How to add "Back to top" link at bottom at <div> is browser window is shorter than page, using jquer

  - by metal-gear-solid

  How to add "Back to top" link at bottom at is browser window is shorter than page, using jquery? <div id="mainContent"> <p>Some content</p> </div> If some content is bigger than browser window ( I mean if vertical bar comes on the page) then i want to add Back to top just before closing the div. <div id="mainContent"> <p>Some content</p> <p>Some content</p> <p>Some content</p> <a href="#"> Back to top </a> </div>

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• What constitutes a private API in an iPhone app?

  - by tweened

  I'm fairly new to Objective-C and am confused on what falls under the unbrella of a "private API" that could cause Apple to reject my app. Does this include adding methods to existing classes? For example, I found some code on stackoverflow to recolor the tab bar icons for UITabBars with this extension to the UITabBarItem class. Is this considered a "private API"? If not, what does? @interface UITabBar (ColorExtensions) - (void)recolorItemsWithImage:(UIImage *)image shadowColor:(UIColor *)shadowColor shadowOffset:(CGSize)shadowOffset shadowBlur:(CGFloat)shadowBlur; @end

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• best way to make this app/website combo?

  - by mharris7190

  I have an idea for an app that lets different bars upload drink specials via a webpage to that app. They would log in the website, and the website would prompt them with a box to input the drink specials. When they are done, the app pulls the information and creates a card for that bar. The app would launch into a week view where you select the day you want to see specials for. After the day is selected, it brings you to a scroll view with different bars' cards laid out vertically, each taking up the width of the screen, allowing the user to scroll through the deals for that day of the week. How should I go about doing this if I have very little programming experience? Is there any convention in doing an app like this? Can anyone suggest any reading material that would help? Thank you!

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• UI: where to display a status result from a drag & drop?

  - by Jason S

  So I've got drag & drop working. When a drop occurs, I do some processing, and sometimes there is a result that I want to make the user aware of. Right now I am just outputting to the console which isn't very nice. What's an appropriate way to display a status result from a drag & drop? Somehow a modal dialog box seems inappropriate, and a status bar is too space-constrained, I think.

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