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• PayPal: IPN vs PDT

  - by Tom

  Hi, I'm having some trouble choosing between PayPal's Instant Payment Notification (IPN) and Payment Data Transfer (PDT). Basically, users buy a one-off product on my site, pay on PayPal, and return to my site. I understand how IPN works but I'm now seeing that I might be able to trigger the various actions that take place after a successful…

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• Learning AES: the KeyBytes

  - by Tom Brito

  I got the following example from here: import java.security.Security; import javax.crypto.Cipher; import javax.crypto.spec.SecretKeySpec; public class MainClass { public static void main(String[] args) throws Exception { Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider()); byte[] input =…

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• best way to pick a random subset from a collection?

  - by Tom

  I have a set of objects in a Vector from which I'd like to select a random subset (e.g. 100 items coming back; pick 5 randomly). In my first (very hasty) pass I did an extremely simple and perhaps overly clever solution: Vector itemsVector = getItems(); Collections.shuffle(itemsVector); itemsVector.setSize(5); While this has…

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• ProgressBar not updating on change to Maximum through binding

  - by Tom

  <ProgressBar Foreground="Red" Background="Transparent" Value="{Binding NumFailed, Mode=OneWay}" Minimum="0" Maximum="{Binding NumTubes, Mode=OneWay, Converter={x:Static wpftools:DebuggingConverter.Instance}, ConverterParameter=Failedprogressbar}" …

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• django model Form. Include fields from related models

  - by Tom

  Hi. I have a model, called Student, which has some fields, and a OneToOne relationship with user (django.contrib.auth.User). class Student(models.Model): phone = models.CharField(max_length = 25 ) birthdate = models.DateField(null=True) gender = models.CharField(max_length=1,choices =…

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• python search replace using wildcards

  - by tom smith

  hi somewhat confused.. but trying to do a search/repace using wildcards if i have something like: <blah.... ssf ff> <bl.... ssf dfggg ff> <b.... ssf ghhjj fhf> and i want to replace all of the above strings with say, <hh >t any thoughts/comments on how…

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• Retrieving FBO data in GLSL

  - by Tom Savage

  I'm trying to get MRT working in OpenGL to try out deferred rendering. Here's the situation as I understand it. Create 3 render buffers (for example). Two RGBA8 and one Depth32. Create an FBO. Attach render buffers to FBO. ColorAttachment0/1 for color buffers, DepthAttachment for depth buffer. Bind…

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• How to convert EOT font to TTF

  - by Tom Schaefer

  Does somebody know a font conversion utility which is able to convert EOT fonts to ttf?

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• WPF 4.0 Font Rendering Issue

  - by Tom Allen

  I'm getting a weird rendering issue with WPF 4 applications in the way they render some of the text as it's stretching it and making it very narrow. .net 3.5: .net 4.0: At first I thought it could be a problem with the font, but I'm also seeing the same problem in the Blend 4 beta: I'm…

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• Retrieving the an SQL Agent job's specific error

  - by Tom Andrews

  I am using msdb..sp_help_job to access whether a job succeeded or failed and can retrieve a general error. But, I want to access the specific error for the step that failed. I cannot seem to find it. It is not in this list of helpful stored procedures provided by MS…

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• UnmarshalException: unexpected element

  - by Tom Brito

  I'm working with JAXB, and I'm having trouble to unmarshall a file; The following lines, on the beginning of the file, are causing trouble: <!DOCTYPE package PUBLIC "+//ISBN 0-9673008-1-9//DTD OEB 1.2 Package//EN"…

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• C/C++ in iPad/iPhone

  - by Tom Brito

  Is it possible to use C/C++ code in iPad or IPhone development? And how easy is it?

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• How to convert a non serializable object to byte array?

  - by Tom Brito

  I'm trying to use javax.crypto.Cipher.doFinal(byte[]) method to encrypt an object. But, for security reasons, the object cannot be serializable. So, how to convert the object to byte array without serialization?

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• Using UUIDs for cheap equals() and hashCode()

  - by Tom McIntyre

  I have an immutable class, TokenList, which consists of a list of Token objects, which are also immutable: @Immutable public final class TokenList { private final List<Token> tokens; public…

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• Dynamic function docstring

  - by Tom Aldcroft

  I'd like to write a python function that has a dynamically created docstring. In essence for a function func() I want func.__doc__ to be a descriptor that calls a custom __get__ function create the…

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• Problem with sfRemember cookie / sfGuard Remember me

  - by Tom

  I'm using Symfony 1.4 with Doctrine. Sorry if this is a silly question but what exactly does one need to build on top of the sfDoctrineGuardPlugin to get the "remember me" functionality working? …

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• good PDF library for Delphi

  - by Tom

  is there a good and free PDF generator library for delphi ? I need one with multipage + graphics support.

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• on iPhone change the url background color (when get tapped) from gray to others

  - by tom

  It could be a HTML question as well... I have a UIWebView with a page (from the hand made html string) loaded. For the url link on the page, if you tap on it, it has gray as background, which I…

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• Silverlight: Set Items Widths in ItemsControl to Stretch

  - by Tom Allen

  I've got an ItemsControl which fills from top to bottom, but I can't get it's child items to occupy the whole width of the ItemsControl: I basically need to stretch the green bits to fill the…

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• script to find "deny" ACE in ACLs, and remove it

  - by Tom

  On my 100TB cluster, I need to find dirs and files that have a "deny" ACE within their ACL, then remove that ACE on each instance. I'm using the following: # find . -print0 | xargs -0 ls -led…

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• problems with infinite loop

  - by Tom

  function addAds($n) { for ($i=0;$i<=$n;$i++) { while($row=mysql_fetch_array(mysql_query("SELECT * FROM users"))) { $aut[]=$row['name']; } …

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• Does C# have an equivalent to Scala's structural typing?

  - by Tom Morris

  In Scala, I can define structural types as follows: type Pressable { def press(): Unit } This means that I can define a function or method which…

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• Gem installed and require but "Constant missing"

  - by Tom Andrews

  I have installed the gem 'simple_uuid' but nothing seems to be working. Using irb and running the following: require 'rubygems' require…

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• How do I get a mp3 file's total time in Java?

  - by Tom Brito

  The answers provided in How do I get a sound file’s total time in Java? work well for wav files, but not for mp3 files. They are (given a…

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• JButton Layout Issue

  - by Tom Johnson

  I'm putting together the basic layout for a contacts book, and I want to know how I can make the 3 test buttons span from edge to edge…

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