rosarch - Page 5 - Developer IT

jQuery Validation Plugin: Packer undefined error?

- by Rosarch

I'm using the jQuery validation plugin from bassistance.de. It works fine. From <head>: <script type="text/javascript" src="/static/JQuery.js"></script> <script type="text/javascript" src="/static/js-lib/jquery.validate.pack.js"></script> <script type="text/javascript"…

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C#: Immutable view of a list's objects?

- by Rosarch

I have a list, and I want to provide read-only access to a collection containing its contents. How can I do this? Something like: public ICollection<Foo> ImmutableViewOfInventory() { IList<Foo> inventory = new List<Foo>(); inventory.add(new Foo()); return…

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C++: Trouble with Pointers, loop variables, and structs

- by Rosarch

Consider the following example: #include <iostream> #include <sstream> #include <vector> #include <wchar.h> #include <stdlib.h> using namespace std; struct odp { int f; wchar_t* pstr; }; int main() { vector<odp> vec; ostringstream ss;…

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C++: Cannot convert from foo& to foo*

- by Rosarch

I have a method: odp(foo& bar); I'm trying to call it: foo baz; odp(&baz); I get a compiler error: error C2664: "odp" cannot convert parameter 1 from 'foo *' to 'foo &' What am I doing wrong? Aren't I passing in a reference to baz? UPDATE: Perhaps I have a…

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PHP: str_replace that only acts on the first match?

- by Rosarch

I want a version of strreplace() that only replaces the first match in the target string. Is there an easy solution to this, or do I need a hacky solution?

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Google App Engine: TypeError problem with Models

- by Rosarch

I'm running Google App Engine on the dev server. Here is my models file: from google.appengine.ext import db import pickle import re re_dept_code = re.compile(r'[A-Z]{2,}') re_course_number = re.compile(r'[0-9]{4}') class DependencyArcHead(db.Model): sink =…

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Python: why does this code take forever (infinite loop?)

- by Rosarch

I'm developing an app in Google App Engine. One of my methods is taking never completing, which makes me think it's caught in an infinite loop. I've stared at it, but can't figure it out. Disclaimer: I'm using http://code.google.com/p/gaeunitlink text to run my…

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Javascript Instance Variable Syntax (AJAX page refresh)

- by Rosarch

I'm having difficulty with Javascript instance variables. I'm trying to make an easy way to refresh the chat page, looking for new messages. The AJAX call supplies a mid, or the lowest message id to be returned. This allows the call to only ask for the most…

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C# XNA: What can cause SpriteBatch.End() to throw a NRE?

- by Rosarch

I don't understand what I'm doing wrong here: public void Draw(GameTime gameTime) // in ScreenManager { SpriteBatch.Begin(SpriteBlendMode.AlphaBlend); for (int i = 0; i < Screens.Count; i++) { if (Screens[i].State ==…

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XNA: What can cause SpriteBatch.End() to throw a NRE?

- by Rosarch

I don't understand what I'm doing wrong here: public void Draw(GameTime gameTime) // in ScreenManager { SpriteBatch.Begin(SpriteBlendMode.AlphaBlend); for (int i = 0; i < Screens.Count; i++) { if (Screens[i].State ==…

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jQuery $.data(): Possible misuse?

- by Rosarch

Perhaps I'm using $.data incorrectly. Assigning the data: var course_li = sprintf('<li class="draggable course">%s</li>', course["fields"]["name"]); $(course_li).data('pk', course['pk']); alert(course['pk']); // shows a…

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C++: Trouble with templates (C2064)

- by Rosarch

I'm having compiler errors, and I'm not sure why. What am I doing wrong here: Hangman.cpp: set<char> Hangman::incorrectGuesses() { // Hangman line 103 return Utils::findAll_if<char>(guesses.begin(),…

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Windows: Get message sent to a parent window?

- by Rosarch

Using a EM_SETEVENTMASK message can set which notifications a rich edit control sends to its parent window. How can I intercept/be notified of these messages? Ideally, I'd have a callback that I could register with…

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Mercurial: Share a repo without putting it on a server?

- by Rosarch

I am working in a student group with several other people. We would like to use Mercurial as our version control system, but some of our files can't be put online in a public hosting service like Google Projects or…

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default model field attribute in Django

- by Rosarch

I have a Django model: @staticmethod def getdefault(): print "getdefault called" return cPickle.dumps(set()) _applies_to = models.TextField(db_index=True, default=getdefault) For…

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Python: problem with tiny script to delete files

- by Rosarch

I have a project that used to be under SVN, but now I'm moving it to Mercurial, so I want to clear out all the .svn files. It's a little too big to do it by hand, so I decided to write a python script to do…

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Ninject: Syntax for dependency arguments?

- by Rosarch

I have a class with a public constructor: public MasterEngine(IInputReader inputReader) { this.inputReader = inputReader; graphicsDeviceManager = new GraphicsDeviceManager(this); …

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jQuery: See how many elements a selector matched?

- by Rosarch

If I have a selector like $.('.active'); How can I see how many items that matched? Alternatively, is there an easy way to see if more than zero elements were matched?

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XNA: How to convert a game to be compatible with the Xbox 360?

- by Rosarch

I have a C# XNA game that I'd like to test on the 360. How do I do this, in terms of what I need to do to the Visual Studio project? For instance, how can I define certain actions will only take place on an…

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Java: how to represent graphs?

- by Rosarch

I'm implementing some algorithms to teach myself about graphs and how to work with them. What would you recommend is the best way to do that in Java? I was thinking something like this: public class Vertex…

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Django: Data corrupted after loading? (possible programmer error)

- by Rosarch

I may be loading data the wrong way. excerpt of data.json: { "pk": "1", "model": "myapp.Course", "fields": { "name": "Introduction to Web Design", "requiredFor": [9], …

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Java: JGraphT: Iterate through nodes

- by Rosarch

I'm trying to iterate through all nodes, so I can print them out for graphviz. What is the best way to do that using the JGraphT library? public static void main(String[] args) { …

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XNA and Ninject: Syntax for dependency arguments?

- by Rosarch

I have a class with a public constructor: public MasterEngine(IInputReader inputReader) { this.inputReader = inputReader; graphicsDeviceManager = new…

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C#: Union of two ICollections? (equivlaent of Java's addAll())

- by Rosarch

I have two ICollections of which I would like to take the union. Currently, I'm doing this with a foreach loop, but that feels verbose and hideous. What is the C# equivalent…

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Difficulties with Django on Google App Engine

- by Rosarch

I have a Django project that works fine. I'm trying to import it to Google App Engine. I run it on the dev server, and I get an import error: ImportError at / No module…

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