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• Objective-C "miscasting" a string/int using stringWithFormat and %d

  - by user141146

  Hi, I think this is a relatively simple question, but I don't precisely know what's happening. I have a method that tries to build a string using NSString's stringWithFormat It looks like this: NSString *line1 = [NSString stringWithFormat:@"the car is %d miles away", self.ma]; In the above line "self.ma" should be an int, but in my case, I…

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• How do I change the frame position for a custom MKAnnotationView?

  - by andrei

  I am trying to make a custom annotation view by subclassing MKAnnotationView and overriding the drawRect method. I want the view to be drawn offset from the annotation's position, somewhat like MKPinAnnotationView does it, so that the point of the pin is at the specified coordinates, rather than the middle of the pin. So I set the frame…

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• NSMutableDictionary is being treated as an NSDictionary

  - by Marc Gelfo

  Hi, I have a simple class with an NSMutableDictionary member variable. However, when I call setObject:forKey I get an error ('mutating method sent to immutable object'). The source of the problem is obvious from the debugger -- my NSMutableDictionary is actually of type NSDictionary. I must be missing something incredibly simple but…

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• Undefined variable from import when using wxPython in pydev

  - by Bibendum

  I just downloaded wxPython, and was running some of the sample programs from here. However, on every line that uses a variable from wx.*, I get a "Undefined variable from import error" For example, the following program generates five errors on lines 1,4,8, and two on line 5: import wx class MyFrame(wx.Frame): """ We simply…

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• Python 3.1.1 Class Question

  - by Protean

  I'm a new Python programmer who is having a little trouble using 'self' in classes. For example: class data: def __init__(self): self.table = [] def add(self, file): self.table.append(file) data.add('yes') In this function I want to have table be a variable stored in the class data and use add to modify…

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• Is it possible to change the border color of a UISearchDisplayController's search bar?

  - by prendio2

  I have a UISearchBar added as my table header with the following code. searchBar = [[UISearchBar alloc] initWithFrame:self.tableView.bounds]; searchBar.tintColor = [UIColor colorWithWhite:185.0/255 alpha:1.0]; [searchBar sizeToFit]; self.tableView.tableHeaderView = searchBar; Then I set my UISearchDisplayController up as…

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• "TypeError: draw() takes exactly 1 non-keyword argument (3 given)"

  - by Amorack

  I wrote this code to open a window with Pyglet in Python... import pyglet from pyglet import window class Window(pyglet.window.Window): def __init__(self): super(Window, self).__init__() myLabel = pyglet.text.Label("Prototype") windowText = myLabel.draw(Window, "Hello World", …

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• Using Tweepy API behind proxy

  - by user1505819

  I have a using Tweepy, a python wrapper for Twitter.I am writing a small GUI application in Python which updates my twitter account. Currently, I am just testing if the I can get connected to Twitter, hence used test() call. I am behind Squid Proxy server.What changes should I make to snippet so that I should get my work…

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• Pylons, SQlite and autoincrementing fields

  - by Maxfrank

  Hey! Just started working with Pylons in conjunction with SQLAlchemy, and my model looks something like this: from sqlalchemy import Column from sqlalchemy.types import Integer, String from helloworld.model.meta import Base class Person(Base): __tablename__ = "person" id = Column(Integer, primary_key=True) …

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• Proper way in Python to raise errors while setting variables

  - by ensnare

  What is the proper way to do error-checking in a class? Raising exceptions? Setting an instance variable dictionary "errors" that contains all the errors and returning it? Is it bad to print errors from a class? Do I have to return False if I'm raising an exception? Just want to make sure that I'm doing things…

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• Proper way to set class variables

  - by ensnare

  I'm writing a class to insert users into a database, and before I get too far in, I just want to make sure that my OO approach is clean: class User(object): def setName(self,name): #Do sanity checks on name self._name = name def setPassword(self,password): #Check password length…

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• Cheetah pre-compiled template usage quesion

  - by leo

  For performance reason as suggested here, I am studying how to used the pr-compiled template. I edit hello.tmpl in template directory as #attr title = "This is my Template" \${title} Hello \${who}! then issued cheetah-compile.exe .\hello.tmpl and get the hello.py In…

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• In python, what is the fastest way to determine if a string is an email or an integer?

  - by ensnare

  I'd like to be able to pull users from a database using either a supplied e-mail address or the user id (an integer). To do this, I have to detect if the supplied string is an integer, or an e-mail. Looking for the fastest way to do this. Thanks. def __init__(self, data): #populate class data …

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• Python "draw() must be called with Label instance as first argument (got _WindowMetaclass instance i

  - by Amorack

  This is a class I made using Python with pyglet to display a window. class Window(pyglet.window.Window): def __init__(self): super(Window, self).__init__() pyglet.text.Label("Prototype") windowText = text.Label.draw(Window, "Hello World", font_name…

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• Help a Python newbie with a Django model inheritance problem

  - by Joshmaker

  I'm working on my first real Django project after years of PHP programming, and I am running into a problem with my models. First, I noticed that I was copying and pasting code between the models, and being a diligent OO programmer I decided to make a parent class that the other models could inherit…

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• PyOpenGL: glVertexPointer() offset problem

  - by SurvivalMachine

  My vertices are interleaved in a numpy array (dtype = float32) like this: ... tu, tv, nx, ny, nz, vx, vy, vz, ... When rendering, I'm calling gl*Pointer() like this (I have enabled the arrays before): stride = (2 + 3 + 3) * 4 glTexCoordPointer( 2, GL_FLOAT, stride, self.vertArray ) glNormalPointer(…

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• regular expression to read the string between <title> and </title>

  - by user262325

  Hello every one I hope to read the contents between and in a html string. I think it should be in objective-c @"<title([\\s\\S]*)</title>" below are the codes that rewrited for regular expression //source of NSStringCategory.h #import <Foundation/Foundation.h> #import…

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• Why does my UITableView change from UITableViewStyleGrouped to UITableViewStylePlain

  - by casper

  My application has a view controller that extends UITableViewController. The initialization method looks like this: - (id)initWithCoder:(NSCoder*)coder { if (self = [super initWithCoder:coder]) { self.tableView = [[UITableView alloc] initWithFrame:self.tableView.frame …

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• differing methods of alloc / init / retaining an object in objective-c

  - by taber

  In several pieces of sample objective-c code I've seen people create new objects like this: RootViewController *viewController = [[RootViewController alloc] init]; self.rootViewController = viewController; // self.rootViewController is a (nonatomic,retain) synthesized property…

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• Calling activateWindow on QDialog sends window to background

  - by Stan

  I am debugging certain application written with C++/Qt4. On Linux it has problems that with certain window managers (gnome-wm/metacity), the main window (based on QDialog) is created in the background (it's not raised). I managed to re-create the scenario using PyQt4 and…

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• removing invisible header from ipad tableview

  - by Cœur

  my UITableView has some kind of invisible header / inset on iPad and not on iPhone. I tried all the following to remove this unwanted header/inset, with no success: - (void)viewDidLoad { [super viewDidLoad]; self.tableview.sectionHeaderHeight = 0.f; …

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• Getting keyboard size from user info in Swift

  - by user3746428

  I have been trying to add some code to move my view up when the keyboard appears, however I am having issues trying to translate the Objective C examples into Swift. I have made some progress but I am stuck on one particular line. These are the two…

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• Unexplained file not found for an existing file

  - by knishua

  Following is the error that occurs in this part of the code. Although the path is valid, a RuntimeError occurs—strange. What is happening, and how can I get this to work? for root,dirs,files in os.walk(self.path): for f in…

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• Can someone here explain constructors and destructors in python - simple explanation required - new

  - by rgolwalkar

  i will try to see if it makes sense :- class Person: '''Represnts a person ''' population = 0 def __init__(self,name): //some statements and population += 1 def __del__(self): //some statements and…

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• QPainter paints garbage

  - by DSblizzard

  Fragment of program code: def add_link(Item0Num, Item1Num): global Mw, View # Mw - MainWindow if Item0Num != Item1Num and not link_exists(Item0Num, Item1Num): append( links_to(Item1Num), Item0Num ) append(…

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