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  • Haskell "Source reduction"

    - by Martin
    I'm revising for an upcoming Haskell exam and I don't understand one of the questions on a past paper. Google turns up nothing useful fst(x, y) = x square i = i * i i) Source reduce, using Haskells lazy evaluation, the expression: fst(square(3+4), square 8) ii) Source reduce, using strict evaluation, the same expression iii) State one advantage of lazy evaluation and one advantage of strict evaluation

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  • MOD_REWRITE HELP!

    - by shahinkian
    I want to use mode rewrite to display the following: mydomain.com/Florida/Tampa/ instead of mydomain.com/place.php?state=Florida&city=Tampa I've akready done this: (since I think it might make a difference!) mydomain.com/[name].html instead of mydomain.com/profile?user=[name] Here is the code! Options +FollowSymLinks Options +Indexes RewriteEngine On RewriteBase / RewriteCond %{SCRIPT_FILENAME}! !-f RewriteCond %{SCRIPT_FILENAME}! !-d RewriteRule (.*).html profile.php?user=$1 [QSA.L]

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  • Methods in Customized View did not get invoke in AppDelegate, Why?

    - by NorthKyut
    I want the methods pauseGame in customized UIView - MyGameView get invoked when the phone is locked or interrupted. So I have a pauseGame method but it can't stop the timer when user lock screen (command+L). The lock screen did appear but the game still running at the background. So I added the testPause method to MyGameView and MyGameAppDelegate and and put a breakpoint to debug it. When screen locked it, the screen lock appeared and the code did stop at the breakpoint. But when I tried to step into the testPause method, it didn't take me to the method in MyGameView (it just passed it, not skipped) and no message was printed on terminal by NSLog. Why? What did I miss? // // MyGameAppDelegate.h // MyGame // #import <UIKit/UIKit.h> @class MyGameViewController; @class MyGameView; @interface MyGameAppDelegate : NSObject { UIWindow *window; MyGameViewController *viewController; MyGameView *view; } @property (nonatomic, retain) IBOutlet UIWindow *window; @property (nonatomic, retain) IBOutlet MyGameViewController *viewController; @property (nonatomic, retain) IBOutlet MyGameView *view; @end // // MyGameAppDelegate.m // MyGame // #import "MyGameAppDelegate.h" #import "MyGameViewController.h" #import "MyGameView.h" @implementation MyGameAppDelegate @synthesize window; @synthesize viewController; @synthesize view; - (void)applicationWillResignActive:(UIApplication *)application { /* Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state. Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game. */ [view pauseGame]; [view testPause]; } @end // // MyGameView.h // MyGame @interface MyGameView : UIView { - (void)pauseGame; - (void)testPause; @end // // MyGameView.m // MyGame // #import "MyGameView.h" #import "AtlasSprite.h" #import "MyGameViewController.h" #import "SecondViewController.h" @implementation MyGameView - (void)pauseGame { [theTimer invalidate]; theTimer = nil; } - (void)testPause{ NSLog(@"TestPause"); } @end

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  • snmp and platform specific information

    - by reza
    I need to come with a strategy to use gather information about the health of my linux platform, hardware health such as high CPU temperature and may be disk space usage, etc... I know my examples are not very good ones. Essentially, I have an SNMP agent running on Linux and I need it to provide platform specific health and state information. Are there any Linux packages that do this, what MIBs to use, Dell Open Manager functionality??? Any thoughts and comments are appreciated.

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  • Sony SmartWatch 2 Magnetic Fields confusion

    - by user1865735
    I'm trying to use Registration.SensorTypeValue.MAGNETIC_FIELD in SmartWatch's 2 plugin. But values that I received put me into some dissapointed state, cause of few reason: Values is to big (I tested magnetic fields on 3 phones and result is like "-12. , 38, -14", and the watch give me something like "488, 440, -115") Values are almost static, they live in very small range. What's wrong with me or with the watch? I think this question is for Sony support team.

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  • Call IBAction in other method

    - by user1628083
    I have an IBAction of SignIn and Method getData. When load it call SignIn into method Getdata in case I want auto sign in without click button Sign In. -(void)getData {       if ([_remCheckbox state] == NSOnState)     {         NSUserDefaults *store = [NSUserDefaults standardUserDefaults];                  NSString *un = [store objectForKey:@"usrname"];         NSString *pw = [store objectForKey:@"usrpwd"];                  _txtUsername.stringValue = un;         _txtPwd.stringValue = pw;                  //call event IBAction              }   } - (IBAction)buttonSignIn:(id)sender {     //Signin code suppose to work fine }

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  • Why the array not works ?

    - by question_about_the_problem
    I want to generate the array $result_array. There is no error at the page, but not works! that not works ! //BOF: Result Array $result_array = ''; $result_array .= '"messages" => "' . $errors .'",'; $result_array .= '"this_addr_type" => "' . (int)$_REQUEST['edit'] .'",'; if (ACCOUNT_GENDER == 'true') { $result_array .= '"gender_male" => "' . $male .'",'; $result_array .= '"gender_female" => "' . $female .'",'; } $result_array .= '"firstname" => "' . $entry['entry_firstname'] .'",'; $result_array .= '"lastname" => "' . $entry['entry_lastname'] .'",'; if (ACCOUNT_COMPANY == 'true') { $result_array .= '"company" => "' . $entry['entry_company'] .'",'; } $result_array .= '"street_address" => "' . $entry['entry_street_address'] .'",'; if (ACCOUNT_SUBURB == 'true') { $result_array .= '"suburb" => "' . $entry['entry_suburb'] .'",'; } $result_array .= '"postcode" => "' . $entry['entry_postcode'] .'",'; $result_array .= '"city" => "' . $entry['entry_city'] .'",'; if (ACCOUNT_STATE == 'true') { $result_array .= '"state" => "' . $entry['entry_state'] .'",'; } $result_array .= '"country" => "' . $entry['entry_country_id'] .'"'; //EOF: Result Array $_RESULT = array($result_array); that works $_RESULT = array( "this_addr_type" => (int)$_REQUEST['edit'], "gender_male" => $male, "gender_female" => $female, "firstname" => $entry["entry_firstname"], "lastname" => $entry["entry_lastname"], "company" => $entry["entry_company"], "street_address" => $entry["entry_street_address"], "suburb" => $entry["entry_suburb"], "postcode" => $entry["entry_postcode"], "city" => $entry["entry_city"], "state" => $entry["entry_state"], "country" => $entry["entry_country_id"] );

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  • How can I keep persistent cookies from certain domains only?

    - by Mike L.
    This question is similar this one which covers Firefox, but I want to know how to do it in Chrome: I want Chrome to clear cookies from all sites accept those from certain domains. In the Cookies section of the *Content Settings I've made following selections: (*) Allow local data to be set (recommended) ( ) Allow local data to be set for the current session only ( ) Block sites from setting any data [ ] Block third-party cookies and site data [x] Clear cookies and other sites and plug-in data when I close my browser After logged in to my preferred website(s), I find the required domains listed when I click at All cookies and site data. Let's say, I find some cookies for mysite.comand www.mysite.com. Now I click at Manage exceptions and enter these items: Hostname Pattern Behavior ------------------------------------------- mysite.com Allow www.mysite.com Allow Unfortunately, this does not seem to work, because when I close Chrome and reopen it, all cookies are gone, even those from the configured mysite.com hosts.

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  • Using Git or Mercurial, how would you know when you do a clone or a pull, no one is checking in file

    - by Jian Lin
    Using Git or Mercurial, how would you know when you do a clone or a pull, no one is checking in files (pushing it)? It can be important that: 1) You never know it is in an inconsistent state, so you try for 2 hours trying to debug the code for what's wrong. 2) With all the framework code -- potentially hundreds of files -- if some files are inconsistent with the other, can't the rake db:migrate or script/generate controller cause some damage or inconsistencies to the code base?

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  • Are PHP5 objects passed by reference?

    - by morpheous
    I cant seem to get any consistent info on this. Different sources appear to say different things and trhe venerable php.net iteslf (appears) not to explicitly state this - although I must admit, I only had a quick look. In cases where I am passing around 'heavy' objects, I need to pass by reference, but I dont want to keep typing: function foo(TypeName& $obj) if I can get away with simply, function foo(TypeName $obj) So what does the standard say?

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  • UIPicker reloading content

    - by kumaravel
    Hi i have a problem with UIPicker, im keeping my Picker in Navigation controller. i want the Picker content to reload whenever the navigation controller push the PickerView. but the pickerview content maintaining same state in all navigation.. how to change this?

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  • Erlang: How do you reload an application env configuration?

    - by mwt
    How do you reload an application's configuration? Or, what are good strategies for managing dynamic application configuration? For example, let's say I had log levels and I wanted to change them at runtime. Also, let's assume this is one of many such options. Does it make sense to have a "configuration server" that holds configuration state for other parts of the application to query? Do people do that or did I just make it up?

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  • gtk+ checkbutton settings

    - by jldupont
    Is there a way to use set_active on a gtkCheckButton but without the user being able to press/toggle the said button? In other words, I want to programmatically control the active state of the CheckButton but I don't want the user to be able to change it.

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  • Guidance for Workflow type applications

    - by UpTheCreek
    Hi, I'm looking for best practices and resources regarding design of workflow based applications. E.g.Best practice/guidance for: How best to represent business object 'states' (position in workflow) How to approach logging of transition between workflow states State transition rules I'm using .NET, but am rather looking for general guidance I'm sorry that this is a bit general, I'm just hoping some people will have some experiences to share.

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  • Command-line tool to search for file names on offline backup drives

    - by halloleo
    I am looking for an open-source (command-line) tool to register and search all my (backup) drives on a file name level. I want to search for file and folder names preferably written as regular expressions or file glob patterns. The external drives contain just normal HFS and NTFS filesystems. The backups are done via direct file copy. Requirement is that the tool compiles on OS X and works without each of the drives attached, but rather pointing me to the drive in case a drive contains a file with the pattern I searched for. At the moment I use a hand-knit script solution with locate databases, one for each external backup drive, but this is rather cumbersome, because locate itself can accesses only one database at a time and does not contain any management system for all the indices/databases. Are there any other tools out there for this?

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  • Jquery - selector not selecting multiple checkboxes IE

    - by JKb
    In IE, The selector for multiple inputs is not working whereas in firefox it is. Below is the html. <td><label for="contactInfo.shippingAddress.streetAddress1" class="mandatoryText">Address Line 1<em class="reqdfields"></td> City* State Zip / Postal Code   Country and below is jquery used - $("*[id^='contactInfo\\.shippingAddress']").val(""); Any thoughts as to where the problem might be..

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  • zend framework storing sessions in database for iframe use?

    - by princyp
    I have a site im running through an iframe in a uiwebview for a native iphone app, the problem is that I guess since the iframe and the html page are on different servers the session will not keep its state. My thought is to store the session data to the database and then just use the stored session data. Is this possible? If so can anyone send me to a guide on how to set up stored sessions with zend framework, I can't seem to find a good example. thanks

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  • How to know ".automaticDestinations-ms" files to which app relates?

    - by Timotei Dolean
    Hello! Does anyone know (Because on microsoft forums nobody answered me), how can I find what app has which automaticDestinations-ms file in %appdata%\microsoft\windows\recent\automaticdestinations ? That's the folder where Windows 7 stores its jump lists, and I want to know how to automatically/programmatic find the relation between each file and an application. At least, even manual I didn't found any pattern, just to look after file extensions in the files, because some programs open files with the same extension (like images), so this method it's not OK for all programs. Do you have any other idea? Maybe knowing the format of those files? Thanks.

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  • Publishing an open source project as a public repository and applying a license

    - by Anton
    If I publish my project now, with added license information, will the license still apply to the project if one goes back a few commits in the history to a state where I hadn't yet added any license information? [Relevant answer][1] [1]: http://stackoverflow.com/questions/2468566/correctly-applying-an-open-source-license/2468663#2468663 Relevant answer This suggests that unless there is some license information available, no rights are granted. Is that true in this case too? Or will the license I added in the last commit also apply to older commits?

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