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• Android Layout: Display as much ImageViews as possible without scrolling

  - by Toni4780

  I am working on an app which should display several same size images on the screen. But it should only display only so much images as possible without offering scrolling. E.g. On a "big" tablet it could display 10x10 Imageviews (screen is large, so there is much space for pictures) On a "big" phone there might be enough space to display 6x6 ImageViews, so it should only display a 6x6 array of images. On a small phone there is propably only space for 4x4 ImageViews, so it should only display this. How can I make this in Android? I know about "layout-large", ... but if i make a special fixed xml-layout for a "large" device, it would not fit all devices correct. E.g. a Galaxy Nexus is a "normal" device and so is a Nexus One, but there would be at least be space for one or two more imageview rows on a Galaxy Nexus than on a Nexus One. So do I have to measure in code somehow how big the resolution is and display some TableRows accordingly? Or is there a special way how I can manage this?

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• JQuery Validation Plugin: Prevent validation issue on nested form

  - by Majid

  I have a form on which I use validation. This form has a section for photo upload. Initially this section contains six elements with the following code: <img class="photo_upload" src="image/app/photo_upload.jpg"> I have bound a function to the click event for the class of photo_upload. This function replaces the image with a minimal form with this code: Copy code <form onsubmit="startUploadImage();" target="control_target" enctype="multipart/form-data" method="post" action="index.php"> <input type="hidden" value="add_image" name="service"> <input type="hidden" value="1000000" name="MAX_FILE_SIZE"> <input type="file" size="10" name="photo" id="photo_file_upload"><br> <button onclick="javascript:cancel_photo_upload();return false;">Cancel</button> </form> So, essentially, after the image is clicked, I'd have a new form nested in my original, validated form. Now, when I use this new form and upload an image, I receive an error (repeated three times) saying: validator is undefined http://host.com/path/index.php Line 286 What is going on here? My guess is this Submit event bubbles up to the outer form As we have validation on that form, validation is triggered, Validation tries to find the form triggering it, Since we have not bound validation to the inner form it returns 'undefined' Now, is my assessment correct? Whether it is or not, how can I solve this issue?

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• Python: Seeing all files in Hex.

  - by Recursion

  I am writing a python script which looks at common computer files and examines them for similar bytes, words, double word's. Though I need/want to see the files in Hex, ande cannot really seem to get python to open a simple file in python. I have tried codecs.open with hex as the encoding, but when I operate on the file descriptor it always spits back File "main.py", line 41, in <module> main() File "main.py", line 38, in main process_file(sys.argv[1]) File "main.py", line 27, in process_file seeker(line.rstrip("\n")) File "main.py", line 15, in seeker for unit in f.read(2): File "/usr/lib/python2.6/codecs.py", line 666, in read return self.reader.read(size) File "/usr/lib/python2.6/codecs.py", line 472, in read newchars, decodedbytes = self.decode(data, self.errors) File "/usr/lib/python2.6/encodings/hex_codec.py", line 50, in decode return hex_decode(input,errors) File "/usr/lib/python2.6/encodings/hex_codec.py", line 42, in hex_decode output = binascii.a2b_hex(input) TypeError: Non-hexadecimal digit found def seeker(_file): f = codecs.open(_file, "rb", "hex") for LINE in f.read(): print LINE f.close() I really just want to see files, and operate on them as if it was in a hex editor like xxd. Also is it possible to read a file in increments of maybe a word at a time. No this is not homework.

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• Code Golf: Easter Spiral

  - by friol

  What's more appropriate than a Spiral for Easter Code Golf sessions? Well, I guess almost anything. The Challenge The shortest code by character count to display a nice ASCII Spiral made of asterisks ('*'). Input is a single number, R, that will be the x-size of the Spiral. The other dimension (y) is always R-2. The program can assume R to be always odd and = 5. Some examples: Input 7 Output ******* * * * *** * * * * ***** * Input 9 Output ********* * * * ***** * * * * * * *** * * * * * ******* * Input 11 Output *********** * * * ******* * * * * * * * *** * * * * * * * * ***** * * * * * ********* * Code count includes input/output (i.e., full program). Any language is permitted. My easily beatable 303 chars long Python example: import sys; d=int(sys.argv[1]); a=[d*[' '] for i in range(d-2)]; r=[0,-1,0,1]; x=d-1;y=x-2;z=0;pz=d-2;v=2; while d>2: while v>0: while pz>0: a[y][x]='*'; pz-=1; if pz>0: x+=r[z]; y+=r[(z+1)%4]; z=(z+1)%4; pz=d; v-=1; v=2;d-=2;pz=d; for w in a: print ''.join(w); Now, enter the Spiral...

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• flex: how to Make two resize effect at the same time

  - by 123quatre

  Hy, Is it possible to resize the application at the same moment when the Accordion size change, to make effect resize og the last one synchronised with resize of Application ? In my code,, the Application is resized after the resize of Accordion is completed: <?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" minWidth="400" minHeight="300" backgroundColor="white" horizontalScrollPolicy="off" verticalScrollPolicy="off" mouseDown="stage.nativeWindow.startMove()"> <mx:Resize id="expand" target="{application}" heightTo="{acc01.height}"/> <mx:Accordion id="acc01" x="0" y="0" resizeToContent="true" resize="expand.play();" horizontalScrollPolicy="off" verticalScrollPolicy="off"> <mx:VBox label="Accordion Pane 1" width="100%" height="100%"> <mx:Label text="hello"/> <mx:Label text="hello"/> <mx:Label text="hello"/> <mx:Label text="hello"/> </mx:VBox> <mx:VBox label="Panel 2" width="100%" height="100%"> <mx:Label text="hello"/> <mx:Label text="hello"/> </mx:VBox> <mx:VBox label="Panel 3" width="100%" height="100%"> <mx:Label text="hello"/> <mx:Label text="hello"/> </mx:VBox> <mx:VBox label="Panel 4" width="100%" height="100%"> <mx:Label text="hello"/> <mx:Label text="hello"/> </mx:VBox> </mx:Accordion> </mx:Application>

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• Reloading a JTree during runtime

  - by Patrick Kiernan

  I create a JTree and model for it out in a class separate to the GUI class. The data for the JTree is extracted from a file. Now in the GUI class the user can add files from the file system to an AWT list. After the user clicks on a file in the list I want the JTree to update. The variable name for the JTree is schemaTree. I have the following code for the when an item in the list is selected: private void schemaListItemStateChanged(java.awt.event.ItemEvent evt) { int selection = schemaList.getSelectedIndex(); File selectedFile = schemas.get(selection); long fileSize = selectedFile.length(); fileInfoLabel.setText("Size: " + fileSize + " bytes"); schemaParser = new XSDParser(selectedFile.getAbsolutePath()); TreeModel model = schemaParser.generateTreeModel(); schemaTree.setModel(model); } I've updated the code to correspond to the accepted answer. The JTree now updates correctly based on which file I select in the list.

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• Enormous data and PHP errors

  - by salamis

  I am currently using the following HighCharts:HighStock:Charts: http://www.highcharts.com/stock/demo/data-grouping in order to display the data returned from the server. We retrieve the data from a MySQL database and is really big. We are storing sensor metrics every 1 second. After a while we got the following error: [Wed Sep 12 00:15:56 2012] [error] [client 127.0.0.1] PHP Fatal error: Allowed memory size of 134217728 bytes exhausted (tried to allocate 4756882 bytes) in C:\\wamp\\www\\admin\\getTrends.php on line 156, referer: http://localhost/admin/trends.php [Wed Sep 12 00:15:56 2012] [error] [client 127.0.0.1] PHP Stack trace:, referer: http://localhost/admin/trends.php [Wed Sep 12 00:15:56 2012] [error] [client 127.0.0.1] PHP 1. {main}() C:\\wamp\\www\\admin\\getTrends.php:0, referer: http://localhost/admin/trends.php [Wed Sep 12 00:15:56 2012] [error] [client 127.0.0.1] PHP 2. getTrendsDataAI() C:\\wamp\\www\\admin\\getTrends.php:33, referer: http://localhost/admin/trends.php [Wed Sep 12 00:15:56 2012] [error] [client 127.0.0.1] PHP 3. printResults() C:\\wamp\\www\\admin\\getTrends.php:102, referer: http://localhost/admin/trends.php [Wed Sep 12 00:15:56 2012] [error] [client 127.0.0.1] PHP 4. createData() C:\\wamp\\www\\admin\\getTrends.php:230, referer: http://localhost/admin/trends.php [Wed Sep 12 00:15:56 2012] [error] [client 127.0.0.1] PHP 5. implode() C:\\wamp\\www\\admin\\getTrends.php:156, referer: http://localhost/admin/trends.php What is the best solution to return this data as JSON object to HighStocks for viewing? And how can we overcome the PHP limitation? Shall we return chunk of data each time? How do they usually present enormous amount of data to the users and creating charts and reports from this data? Another big problem that we need to overcome is that the returned JSON object is enormous. At this point is around 20-30 mbs and it will be much larger in the future. Is it ok to return this data to the user and perform everything client side? Any suggestions or thoughts welcome.

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• Writing to a new window with javascript... get access denied

  - by Søren

  Hello gurus :) I have been struggling with this for a while now, and decided it was time to ask for help. I am trying to create a print function on an aspx page, and I am using javascript to do this: function PrintContentCell() { var display_setting = "toolbar=yes, location=no, directories=yes, menubar=yes,"; display_setting += "scrollbars=yes, width=750, height=600, left=100, top=25"; var content_innerhtml = document.getElementById("testTable").innerHTML; var document_print = window.open("Loading.htm", "", display_setting); document_print.document.open(); document_print.document.write('<html><head><title>Print</title></head>'); document_print.document.write('<body style="font-family:verdana; font-size:12px;" onLoad="self.print();self.close();" >'); document_print.document.write(content_innerhtml); document_print.document.write('</body></html>'); document_print.print(); document_print.document.close(); return false; } I get "Access Denied" when the script tries to write to the new window. The Loading.htm file is just a very slim html document writing out the text "Loading...". I had hoped this would work after reading this thread: http://stackoverflow.com/questions/735136/ie-6-7-access-denied-trying-to-access-a-popup-window-document Anybody can help?

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• Algorithms for finding a numerical record in a list of ordered numbers

  - by Ankur

  I have a list of incomplete ordered numbers. I want to find a particular number with as few steps as possible. Are there any improvements on this algorithm, I assume you can count the set size without difficulty - it will be stored and updated every time a new item is added. Your object is to get your cursor over the value x The first number (smallest) is s, and the last number (greatest) is g. Take the midpoint m1 of the set: calculate is x < m1, If yes then s <= x < m1 If no then m1 < x <= g If m1 = x then you're done. Keep repeating till you find x. Basically dividing the set into two parts with each iteration till you hit x. The purpose is to retrieve a numerical id from a very large table to then find the associated other records. I would imagine this is the most trivial kind of indexing available, are there improvements?

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• Defining a variable in a class and using it in functions

  - by Josh

  I am trying to learn PHP classes so I can begin coding more OOP projects. To help me learn I am building a class that uses the Rapidshare API. Here's my class: <?php class RS { public $baseUrl = 'http://api.rapidshare.com/cgi-bin/rsapi.cgi?sub='; function apiCall($params) { echo $baseUrl; } } ?> $params will contain a set of key pair values, like this: $params = array( 'sub' => 'listfiles_v1', 'type' => 'prem', 'login' => '746625', 'password' => 'not_my_real_pass', 'realfolder' => '0', 'fields' => 'filename,downloads,size', ); Which will later be appended to $baseUrl to make the final request URL, but I can't get $baseUrl to appear in my apiCall() method. I have tried the following: var $baseUrl = 'http://api.rapidshare.com/cgi-bin/rsapi.cgi?sub='; $baseUrl = 'http://api.rapidshare.com/cgi-bin/rsapi.cgi?sub='; private $baseUrl = 'http://api.rapidshare.com/cgi-bin/rsapi.cgi?sub='; And even tried $this->baseUrl = $baseUrl; in my apiCall() methid, I don't know what the hell I was thinking there though lol. Any help is appreciated thanks :)

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• AutoCompleteTextView not displaying result even when the ArrayAdapter is updated

  - by cant0na

  I'm trying to get an AutoCompleteTextView(ACTV) to display results I'm a getting from a network resource. I have set the completion-treshold to 2 and I can see that the request is fired when I enter to characters. The result I am getting is the correct one. Lets say I write "ca", and I get the result "car" as an autocompletion. I have a callback function which receives the result from an AsyncTask and puts the result into the ArrayAdapter. Then I call .showDropDown() on the ACTV and an empty dropdown is shown (half the size of a normal element). Then if I enter the last letter "r" and the ACTV shows "car", the dropdown is shown and the result is suddenly in the list. The same happens if I have entered two characters (which returns a valid result), and the remove the last letter. When the letter is removed, "car" is shown as an autocompletion value. Has anyone had this problem? It looks like the adapter is filled with the result, but the result does not show until the next action I do. I have also tried to run .notifyDataSetChanged() after I have added the result to the adapter, but that should not be needed, or?

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• java recursion on array

  - by user69514

  I have to create a program that finds all the possible ways of filling a board of size 3xN You place a domino which takes up 2 spaces to completely fill the board. So far, this is my thought process on how it should be done based on what the teacher has said as well as my own thoughts. Get input and check if its even or odd If it's odd, the board can't be filled all the way and the program ends If it's even, place a domino horizontally in the top right corner of the board Test if you can place a domino vertically in that spot. Repeat those two steps as many times as possible. The problem is I don't know how to code it to the point where you can remember the placements of each domino. I can get it to where it fills the board completely once and maybe twice, but nothing past that. I also know that I'm supposed to use recursion to figure this out fwiw. Here is the code I started on so far. There is also a main method and I have the initial even/odd check working fine. This is the part I have no idea on. public void recurDomino(int row, int column) { if (Board[2][x - 1] != false) { } else if(Board[1][x-1]!=false) { } else { for (int n=0; n < x - 1; n++) { Board[row][column] = true; Board[row][column+1] = true; column++; counter++; } recurDomino(1, 0); recurDomino(2, 0); } } Thank you for any help you guys can give me.

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• Vector of pointers to base class, odd behaviour calling virtual functions

  - by Ink-Jet

  I have the following code #include <iostream> #include <vector> class Entity { public: virtual void func() = 0; }; class Monster : public Entity { public: void func(); }; void Monster::func() { std::cout << "I AM A MONSTER" << std::endl; } class Buddha : public Entity { public: void func(); }; void Buddha::func() { std::cout << "OHMM" << std::endl; } int main() { const int num = 5; // How many of each to make std::vector<Entity*> t; for(int i = 0; i < num; i++) { Monster m; Entity * e; e = &m; t.push_back(e); } for(int i = 0; i < num; i++) { Buddha b; Entity * e; e = &b; t.push_back(e); } for(int i = 0; i < t.size(); i++) { t[i]->func(); } return 0; } However, when I run it, instead of each class printing out its own message, they all print the "Buddha" message. I want each object to print its own message: Monsters print the monster message, Buddhas print the Buddha message. What have I done wrong?

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• pooling with Windsor

  - by AlonEl

  I've tried out the pooling lifestyle with Windsor. Lets say I want multiple CustomerTasks to work with a pool of ILogger's. when i try resolving more times than maxPoolSize, new loggers keeps getting created. what am i missing and what exactly is the meaning of min and max pool size? the xml configuration i use is (demo code): <component id="customertasks" type="WindsorTest.CustomerTasks, WindsorTestCheck" lifestyle="transient" /> <component id="logger.console" service="WindsorTest.ILogger, WindsorTestCheck" type="WindsorTest.ConsoleLogger, WindsorTestCheck" lifestyle="pooled" initialPoolSize="2" maxPoolSize="5" /> Code is: public interface ILogger { void Log(string message); } public class ConsoleLogger : ILogger { private static int count = 0; public ConsoleLogger() { Console.WriteLine("Hello from constructor number:" + count); count++; } public void Log(string message) { Console.WriteLine(message); } } public class CustomerTasks { private readonly ILogger logger; public CustomerTasks(ILogger logger) { this.logger = logger; } public void SaveCustomer() { logger.Log("Saved customer"); } }

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• [ASP.NET] Difficulties using custom control - RichTextEditor

  - by Chris

  I am working on a school project that uses ASP.NET. I found this TextEditor control ( http://blogs.msdn.com/kirti/archive/2007/11/10/rich-text-editor-is-here.aspx ) that I am trying to include but it isn't working. The error I am getting is: Error Rendering Control - TextEditor. An unhandled exception has occurred. Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index. I see this error when I go Design part of the editor. I just don't understand this error at all. Also I am a lil bit confused as there is no parameter called index. :( What I have done is reference the binary in my project and then on the page I am trying to use it have registered its namespace and assembly with this line: <%@ Register Assembly="RichTextEditor" Namespace="AjaxControls" TagPrefix="rtt" %> I then go ahead and try to add the control to the page with this line of code: <rtt:richtexteditor ID="TextEditor" Theme="Blue" runat="server" /> Any help would be much appreciated. I haven't done anything like add a custom control before.

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• Right Click Context Menu Script for iFrame

  - by Ramiz Uddin

  The context of the problem is related to an application which is based on single-page Ajax application which consists of three different panels (iframes). The layout of the page is as follows: _________________________________________________ | | | Frame A | FRAME C |__________________| | | | Frame B | | | | | | | | | | | | | | | The problem is with the context menu (right-click menu) in Frame C. The position of the context menu is not perfectly positioned with the mouse click. Particularly, if you drag and increase the size of the Frame C window. Code snippet: var rightedge = parent.frames["FrameC"].frameElement.clientWidth-event.clientX; var bottomedge = parent.frames["FrameC"].frameElement.clientHeight-event.clientY; if (rightedge < document.getElementById('Menu').offsetWidth) menuCoorX = parent.frames["FrameC"].frameElement.scrollLeft + event.clientX - document.getElementById('Menu').offsetWidth; else menuCoorX = parent.frames["FrameC"].frameElement.scrollLeft + event.clientX; if (bottomedge < document.getElementById('Menu').offsetHeight) menuCoorY = parent.frames["FrameC"].frameElement.scrollTop + event.clientY - document.getElementById('Menu').offsetHeight; else menuCoorY = parent.frames["FrameC"].frameElement.scrollTop + event.clientY; Currently, we need it to work only for IE (7 and 8). Please, help! Thanks.

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• jcarousel, I need :active state on external controls

  - by TJ Sherrill

  I am running a Jcarousel and I want to add a.active to the current pagination option. I have seen other posts around about this same thing. /** * We use the initCallback callback * to assign functionality to the controls */ function mycarousel_initCallback(carousel) { jQuery('.jcarousel-control a').bind('click', function() { carousel.scroll(jQuery.jcarousel.intval(jQuery(this).text())); return false; }); jQuery('#mycarousel-next').bind('click', function() { carousel.next(); return false; }); jQuery('#mycarousel-prev').bind('click', function() { carousel.prev(); return false; }); }; // Ride the carousel... jQuery(document).ready(function() { jQuery("#mycarousel").jcarousel({ scroll: 1, initCallback: mycarousel_initCallback, // This tells jCarousel NOT to autobuild prev/next buttons buttonNextHTML: null, buttonPrevHTML: null }); }); </script> Thats the initialize code and the pagination lives inside: <ul class="jcarousel-control"> <% ([email protected]).each do |n| %> <li><a href="#"> <%= n %></a></li> <% end %> </ul> Its a rails app, so rails is creating the list based on the number of projects in the group. Any ideas? Seems like it should be pretty simple.. But I don't know js at all.

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• Chrome troubles...

  - by GaVrA

  Take this site for example: http://pms.rs/contact Everything is just fine just by using this css for textarea: #kontakt input, #kontakt textarea{ width:250px; } #kontakt textarea{ height:150px; } But ofc chrome is always smarter and in it user can drag that bottom right corner of textarea and resize it to the size he likes. Call me control freak, but that is very dumb thing to have if no other browser is using that. On sites like this it is not a big deal, but somewhere it can cover the entire content and for me personaly, i like to limit as much as possible what user can do so he does not break my site(like for example adding too large images in posts on forums...). So i have to do something like this: #kontakt input, #kontakt textarea{ width:250px; } #kontakt textarea{ height:150px; max-height:150px; max-width:250px; } Just so i get chrome to play as all other browsers do... While i was typing this i realised that i really dont have any question per se, but i just thought to share this with SO public, so i will mark this as community wiki. Also some other things i noticed are inputs, i always have to put width for input or textarea just because chrome is always not rendering them as he should.

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• Huge mysql table with Zend Framework

  - by Uffo

  I have a mysql table with over 4 million of data; well the problem is that SOME queries WORK and SOME DON'T it depends on the search term, if the search term has a big volume of data in the table than I get the following error: Fatal error: Allowed memory size of 1048576000 bytes exhausted (tried to allocate 75 bytes) in /home/****/public_html/Zend/Db/Statement/Pdo.php on line 290 I currently have Zend Framework cache for metadata enabled, I have index on all the fields from that table.The site is running on a dedicated server with 2gb of ram. I've also set memory limit to: ini_set("memory_limit","1000M"); Any other things that I can optimize? Those are the types of query that I'm currently using: $do = $this->select() ->where('branche LIKE ?','%'.mysql_escape_string($branche).'%') ->order('premium DESC'); } //For name if(empty($branche) && empty($plz)) { $do = $this->select("MATCH(`name`) AGAINST ('{$theString}') AS score") ->where('MATCH(`name`) AGAINST( ? IN BOOLEAN MODE)', $theString) ->order('premium DESC, score'); } And a few other, but they are pretty much the same. Best Regards

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• Determining failing sectors on portable flash memory

  - by Faxwell Mingleton

  I'm trying to write a program that will detect signs of failure for portable flash memory devices (thumb drives, etc). I have seen tools in the past that are able to detect failing sectors and other kinds of trouble on conventional mechanical hard drives, but I fear that flash memory does not have the same kind of predictable low-level access to the hardware due to the internal workings of the storage. Things like wear-leveling and other block-remapping techniques (to skip over 'dead' sectors?) lead me to believe that determining if a flash drive is failing will be difficult at best, if not impossible (short of having constant read failures and device unmounts). Flash drives at their end-of-life should be easy to detect (constant CRC discrepancies during reads and all-out failure). But what about drives that might be failing early? Are there any tell-tale signs like slower throughput speeds that might indicate a flash drive is going to fail much sooner than normal? Along the lines of detecting potentially bad blocks, I had considered attempting random reads/writes to a file close to or exactly the size of the entire volume, but even then is it possible that the drive might report sizes under its maximum capacity to account for 'dead' blocks? In short, is there any way to circumvent or at least detect (algorithmically or otherwise) the use of block-remapping or other life extension techniques for flash memory? Let me end this question by expressing my uncertainty as to whether or not this belongs on serverfault.com . This is definitely a hardware-related question, but I also desire a software solution - preferably one that I can program myself. If this question is misplaced, I will be happy to migrate it to serverfault - but I do need a programming solution. Please let me know if you need clarification :) Thanks!

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• Write to file using CopyHere without using WScript.Sleep

  - by mlevit

  Hi guys, I've written a small VBScript to creates a .zip file and then copies the contents of a specified folder into that .zip file. I copy the files over one by one for a reason (I know I can do the whole lot at once). However my problem is when I try to copy them one by one without a WScript.Sleep between each loop iteration I get a "File not found or no read permission." error; if I place a WScript.Sleep 200 after each write it works but not 100% of the time. Pretty much I'd like to get rid of the Sleep function and not rely on that because depending on the file size it may take longer to write therefore 200 milliseconds may not be enough etc. As you can see with the small piece of code below, I loop through the files, then if they match the extension I place them into the .zip (zipFile) For Each file In folderToZip.Items For Each extension In fileExtensions if (InStr(file, extension)) Then zipFile.CopyHere(file) WScript.Sleep 200 Exit For End If Next Next Any suggestions on how I can stop relying on the Sleep function? Thanks

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• Several Small, Specific, MySQL Query Cache Questions

  - by Robbie

  I've look all over the web and in the questions asked here about MySQL caching and most of them seem very non-specific about a couple of questions that I have about performance and MySQL query caching. Specifically I want answers to these questions, assume for all questions that I have the query cache enabled and it is of type 2, or "DEMAND": Is the query cache per table, per database, or per server? Meaning if I have the cache size set to X and have T tables and D databases will I be caching TX, DX, or X amount of data? If I have table T1 which I regularly use the SQL_CACHE hint on for SELECT queries and table T2 which I never do, when I query T2 with a SELECT query will it check through the cache first before performing the query? *Note: I don't want to use the SQL_NO_CACHE for all T2 queries.* Assume the same situation as in question 2. If I alter (INSERT, DELETE) table T2 will any processing be done on the cache? For answers to 2 and 3, is this processing time negligible if T2 is constantly being altered and is the target of a majority of my SELECT queries?

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• "Public" nested classes or not

  - by Frederick

  Suppose I have a class 'Application'. In order to be initialised it takes certain settings in the constructor. Let's also assume that the number of settings is so many that it's compelling to place them in a class of their own. Compare the following two implementations of this scenario. Implementation 1: class Application { Application(ApplicationSettings settings) { //Do initialisation here } } class ApplicationSettings { //Settings related methods and properties here } Implementation 2: class Application { Application(Application.Settings settings) { //Do initialisation here } class Settings { //Settings related methods and properties here } } To me, the second approach is very much preferable. It is more readable because it strongly emphasises the relation between the two classes. When I write code to instantiate Application class anywhere, the second approach is going to look prettier. Now just imagine the Settings class itself in turn had some similarly "related" class and that class in turn did so too. Go only three such levels and the class naming gets out out of hand in the 'non-nested' case. If you nest, however, things still stay elegant. Despite the above, I've read people saying on StackOverflow that nested classes are justified only if they're not visible to the outside world; that is if they are used only for the internal implementation of the containing class. The commonly cited objection is bloating the size of containing class's source file, but partial classes is the perfect solution for that problem. My question is, why are we wary of the "publicly exposed" use of nested classes? Are there any other arguments against such use?

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• fitting buttons for multiple screens

  - by user3360327

  I want to develop my own keyboard and when I put first line button as you see the buttons are not fitting with any screens size. these are my questions: 1) how can I fit them? 2) is <TableLayout> is correct view layout? if it's not, which one is correct? this is XML code: <TableLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content"> <TableRow> <Button android:id="@+id/btnQ" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/strQ" /> <Button android:id="@+id/btnW" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/strW" /> <Button android:id="@+id/btnE" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/strE" /> <Button android:id="@+id/btnR" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/strR" /> <Button android:id="@+id/btnT" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/strT" /> <Button android:id="@+id/btnY" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/strY" /> <Button android:id="@+id/btnU" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/strU" /> <Button android:id="@+id/btnI" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/strI" /> <Button android:id="@+id/btnO" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/strO" /> <Button android:id="@+id/btnP" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/strP" /> </TableLayout>

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• NSUserDefaults not saving properly

  - by BWC

  Hey Guys I'm having issues with NSUserDefaults and I don't quite understand what's going on My App has 5 levels and each level does the exact same thing with NSUserDefaults (Retrieves the levels defaults, changes the value as the user plays the level and then sets the defaults and syncronizes at the end of the level) the first 4 levels...work without a hitch but the last level doesn't save the values. The app doesn't crash and the last level isn't the very last thing that happens, And I even have the defaults synchronized when the application terminates. Is there a max size on the NSUserDefaults or is there anything anyone can think of that I haven't, I'll post the code below but like I said the first four levels work perfectly //header NSUserDefaults *userData; @property(nonatomic,retain) NSUserDefaults *userData; //class file //Sets the boolean variables for the class to use userData = [NSUserDefaults standardUserDefaults]; boolOne = [userData boolForKey:@"LevelFiveBoolOne"]; boolTwo = [userData boolForKey:@"LevelFiveBoolTwo"]; boolThree = [userData boolForKey:@"LevelFiveBoolThree"]; boolFour = [userData boolForKey:@"LevelFiveBoolFour"]; boolFive = [userData boolForKey:@"LevelFiveBoolFive"]; boolSix = [userData boolForKey:@"LevelFiveBoolSix"]; boolSeven = [userData boolForKey:@"LevelFiveBoolSeven"]; //End Of Level [userData setBool:boolOne forKey:@"LevelFiveBoolOne"]; [userData setBool:boolTwo forKey:@"LevelFiveBoolTwo"]; [userData setBool:boolThree forKey:@"LevelFiveBoolThree"]; [userData setBool:boolFour forKey:@"LevelFiveBoolFour"]; [userData setBool:boolFive forKey:@"LevelFiveBoolFive"]; [userData setBool:boolSix forKey:@"LevelFiveBoolSix"]; [userData setBool:boolSeven forKey:@"LevelFiveBoolSeven"]; [userData synchronize]; When when I switch to the view that uses these defaults they values are correct but when I terminate the application and restart it, these values aren't saved, every other level does the exact same process this is the only level that doesn't work. I've stared at this for quite awhile and I'm hoping someone out there has run into the same problem and can give me some insight on how they resolved it. Thank you in Advance BWC

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