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  • Exception Handaling in google app engine

    - by Rahul99
    i am raising exception using if UserId == '' and Password == '': raise Exception.MyException , "wrong userId or password" but i want print the error message on same page class MyException(Exception): def __init__(self,msg): Exception.__init__(self,msg)

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  • Is there a way to fix the background image of a UITableView

    - by user337174
    Hi I have set the background of my UITable with a custom image. self.tableView.backgroundColor = [UIColor clearColor]; self.tableView.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"background.png"]]; The problem im having is the background image is scrolling and doesn't look good at the top and bottom of the screen where you see the image being joined. Is there a way to fix the position of the background image and just have the table scroll over the top of it?

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  • Line Graph CGPoints from NSMutableArray

    - by Mattog1456
    I have been trying to adapt the code from the accelerometer example such that when the user depresses a uibutton a point is added to a line graph. Working on the converting two floats, which are the result of calculate as below into a CGPoint and converting the CGPoint into an NSValue and then adding this to a NSMutableArray with the following -(IBAction)calculate:(id)sender { self.points = [NSMutableArray array]; CGPoint pt = CGPointMake(d, c); [self.points addObject:[NSValue valueWithCGPoint:pt]]; NSLog(@"%@", NSStringFromCGPoint(pt)); NSLog(@"%@", [NSString stringWithFormat:@"%d points", self.points.count ]); } But for some reason I am only getting one object stored in the array, it seems everytime push the calculate button the object pt gets overwritten, on the plus side it has the correct x,y coords. Any ideas on this one? UPDATE Removed self.points = [NSMutableArray array]; and placed it in view did load, also set the first points to 0,0. so that is working ok. Now the next problem is that I have a Graph subclass where the CG Drawing is taking place. I am trying to figure out a simple way to be able to access the above NSMutableArray which is in a ViewController class from the graph class. Am so close to the end but am really stuck, any help would be great. Still trying to draw a line graph on a UIView which is on a UIScrollview. The draw rect method is in the UIView Subclass and everything is working there, I have gridlines and labels on the axis and I can draw manually onto it. But the problem I have is that I cannot read the NSMutableArray of the CGPoints, which are the x and y coords. The ViewController performs a calculation and the results are written to the NSMutable array and this is all working fine as well, I can see the CGpoints and their values being written with NSLogs in the ViewController. I have tried various ways to set the NSMutableArray up as a global but to no avail, everything runs but while I can see the points being written in the ViewController they are just not visible to the UIView Subclass. I have also tried to use the addObserver and observeValueForKeyPath methods and once again while everything runs the subclass cannot see the array. Any ideas, suggestions, tips or thoughts would be great

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  • Implicit conversion causes stack overflow

    - by user44242
    The following code snippet worked perfectly, then after some code changes in different files, I've started getting stack overflows resulting from recursive invocation of the implicit conversion. Has this ever happened to anyone, and if so what's the fix. implicit def comparable2ordered[A <: Comparable[_]](x: A): Ordered[A] = new Ordered[A] with Proxy { val self = x def compare(y: A): Int = { self.compareTo(y) } }

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  • UINavigationController's back button disappears?

    - by QAD
    I notice something strange happens to one of my view controller: the back button disappears, yet it's possible to go back to previous view controller by tapping the top left corner (i.e where the button should reside). In my entire file there's no line that set self.navigationItem.hidesBackButton to YES; also NSLog prints 0 as self.navigationItem.hidesBackButton's value in viewDidLoad. This occurs in both the simulator and real device. Any ideas?

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  • Dynamic class_name for has_many relations

    - by vooD
    I'm trying to make has_many relation with dynamic class_name attribute class Category < ActiveRecord::Base has_many :ads, :class_name => ( lambda { return self.item_type } ) end or class Category < ActiveRecord::Base has_many :ads, :class_name => self.item_type end But i got errors: can't convert Proc into String or undefined method `item_type' for #<Class:0xb62c6c88> Thank you for any help!

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  • Return NSString from a recursive function

    - by Dave
    Hi, I have a recursive function that is designed to take parse a tree and store all the values of the tree nodes in an NSString. Is the algorithm below correct? NSString* finalString = [self parseTree:rootNode string:@""]; -(NSString*)parseTree:(Node*)currentNode string:(NSMutableString*)myString { [myString appendText:currentNode.value]; for(int i=0;i<[currentNode.children length];i++){ return [self parseTree:[currentNode.children] objectAtIndex:i] string:myString]; } }

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  • Sending / Forwarding variable arguments in ObjectiveC

    - by Authman Apatira
    I know this is possible in other programming languages. Suppose we have the following arrangement: - (void) myMethod:(NSString*)variables, ... { // Handle business here. } - (void) anotherMethod:(NSString*)variables, ... { // We want to pass these variable arguments for handling [self myMethod:variables, ...]; // Do not pass GO } // Start the party: [self anotherMethod:@"arg1", @"arg2", @"arg3", @"arg4", nil]; What's the trick to get this working in ObjC?

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  • Model def in View State

    - by tinzawtun
    In my ruby on rails project in model, I have some of definition. class PlaySport < ActiveRecord::Base belongs_to :user belongs_to :sport def self.getLevel end def self.check_play_sport(cuser_id,sport_id) end def current_playing_sport end def all_played_sports end end I catch for this relation like this current_user.play_sports.current_playing_sport But I get the undefined method error "current_playing_sports" What is wrong

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  • Rendering CALayer in context uses large amounts of memory

    - by Otium
    I am taking a snapshot of a UIWebView layer, but when I render the webview's layer in the current context my app uses 10mb more memory, and I don't think that should be right. Here is my current code: CGSize imageSize = self.bounds.size; UIGraphicsBeginImageContextWithOptions(imageSize, YES, 0); CGContextRef context = UIGraphicsGetCurrentContext(); [self.layer renderInContext:context]; _snapshot = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext();

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  • jQuery.post not working when using data type json

    - by swift
    I have been trying to utilize json in this jQuery.post because I need to return two values from my executed php. The code was working when I was not implementing json. I need to see if a promo code entered is valid for a particular broker. The two variables I need back are the instant message whether or not it's valid (this is displayed to the user) and I need to update a hidden field that will be used later while updating the database. The jQuery.post does not seem to be firing at all, but the code directly above it (the ajax-loader.gif) is working. I did re-write the whole thing at one point using jQuery.ajax, and had issues there too. Granted, I have probably been looking at this too long and have tried to re-write too many times, but any help is greatly appreciated!! Here's the jQuery.post <!-- Below Script is for Checking Promo Code Against Database--> <script type="text/javascript"> jQuery(document).ready(function() { jQuery("#promocode").keyup(function (e) { //removes spaces from PromoCode jQuery(this).val(jQuery(this).val().replace(/\s/g, '')); var promocode = jQuery(this).val(); var brokerdealerid = document.getElementById("BrokerDealerId").value; if(promocode.length > 0 ){ jQuery("#promo-result").html('<img src="../imgs/ajax-loader.gif" />'); jQuery.post( '../check_promocode.php', {promocode:promocode, brokerdealerid:brokerdealerid}, function(data) { $("#promo-result").html(data.promoresult); $("#promo-result-valid").html(data.promovalid); }, "json"); } }); }); </script> <!-- End Script is for Checking Promo Code Against Database--> Here's relevant code from check_promocode.php: //sanitize incoming parameters if (isset($_POST['brokerdealerid'])) $brokerdealerid = sanitizeMySQL($_POST['brokerdealerid']); $promocode = sanitizeMySQL($promocode); //check promocode in db $results = mysql_query("SELECT PromotionCodeIdentifier FROM PromotionCode WHERE PromotionCodeIdentifier='$promocode' AND BrokerDealerId='$brokerdealerid' AND PromotionCodStrtDte <= CURDATE() AND PromotionCodExpDte >= CURDATE()"); //return total count $PromoCode_exist = mysql_num_rows($results); //total records //if value is more than 0, promocode is valid if($PromoCode_exist) { echo json_encode(array("promoresult"=>"Promotion Code Valid", "promovalid"=>"Y")); exit(); }else{ echo json_encode(array("promoresult"=>"Invalid Promotion Code", "promovalid"=>"N")); exit(); }

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  • getting a slide of 'data' returned by $.ajax

    - by Thau
    With $.ajax i'm getting a page dinamicly generated via PHP code, in the HTML returned I need only one object ('lwrapper' in my code). How can I grabber 'lwrapper' from 'data' returned. this is my code $.ajax({ url: ref, //the url cache: false, success: function(data){ //code to get the slide of data //slide = $("lwrapper",data) //not working $('wrapper').html(slide); } });

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  • The date is always ignored

    - by TheLearner
    I cannot understand why the date is never set in the title - it's always ignored and if I swap around the date and the title, then the title is ignored! -(id)initWithCoordinate:(CLLocationCoordinate2D)c title:(NSString *)t { [super init]; coordinate = c; NSDate *today = [NSDate date]; [self setTitle:(@"%@%@", [today description], t)]; //[today release]; return self; }

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  • Prevent debugging projects that are added as reference in Visual Studio

    - by DSWD
    I have a project that is auto generated. This project is referenced by my web app in visual studio. When i step through the code in debug mode the code from this project gets stepped into. Is there a way I can skip this code in debug mode. I can't use System.Diagnostics.DebuggerStepThroughAttribute since the code will get replaced every time my datasource changes. Thanks,

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  • UIButtons display differently on UIImageView when created at design time vs. run time

    - by PRITISH
    I have added some UIButton objects into .xib file, and some UIButton objects with the code. But now I am facing one problem. While Zooming the UIImageView the UIButtons that are added through code are shown on the UIImageView and those that are added with .xib file are below the UIImageView. Code for UIButtons added with code: btnBrightness = UIButton.FromType (UIButtonType.RoundedRect); btnBrightness.Frame = new RectangleF (540, 20, 95, 37); btnBrightness.SetTitle ("Brightness", UIControlState.Normal); More details: monotouch

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  • autoreferencing this class to use in another for c++

    - by atomsfat
    in java we can do this: public class A{ public static void main(String...str){ B b = new B(); b.doSomething(this); //How I do this in c++ ? the this self reference } } public class B{ public void doSomething(A a){ //Importat stuff happen here } } How can I do the same but in c++, I mean the self reference of A to use the method in B ?

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  • JavaScript: document properties

    - by deb
    Hi, is there a "document" property named ssh? It's a simple question. I've seen this in some code at work, but no one in the office wrote the code, so I'm stucked. The line was document.ssh.firstPing(...) firstPing was a method in the code, that is writen in js+php. But I've searched with eclipse throughout all the code and there is no ssh anywhere.

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  • Set parameter to super view after dismissModalViewControllerAnimated

    - by user536926
    Hi, I have 2 view (view A and view B). In viewA when I touch a button I execute this code to flip a viewB: viewB.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal; [self presentModalViewController:viewB animated:YES]; And now when I came back to viewA I use this code: [self dismissModalViewControllerAnimated: YES]; //here is my problem I need to set same parameters to viewA when I execute dismiss. How can I do it?

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  • Invalid attempt to access a field before calling Read() INSERT

    - by Raphael Fernandes
    I'm trying to use this code to check if the system already exists a field with this value Dim adap As New MySqlDataAdapter Dim sqlquery = "SELECT * FROM client WHERE code ='"+ TxtCode.Text +"'" Dim comand As New MySqlCommand() comand.Connection = con comand.CommandText = sqlquery adap.SelectCommand = comand Dim data As MySqlDataReader data = comando2.ExecuteReader() leitor.Read() If (data(3).ToString) = code Then MsgBox("already exists", MsgBoxStyle.Information) TxtCode.ResetText() TxtCode.Focus() Else Console.WriteLine(insert("INSERT INTO client (name, tel, code) VALUES ('" & name & "', '" & tel & "')")) con.Close() End If

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  • calling a cdef in a cdef class

    - by Davoud Taghawi-Nejad
    Hello, is their any way to make this work, without sacrificing the cdef in cdef caller? (no use of cpdef either) from array import * from numpy import * cdef class Agents: cdef public caller(self): print "caller" A[2].called() cdef called(self): print "called" A = [Agents() for i in range(2)] def main(): A[1].caller()

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