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• If the n-body problem is chaotic, why isn't it used as a RNG?

  - by David Titarenco

  I'm probably missing something pretty basic here, but if the n-body problem yields chaotic results (except in specific highly-symmetric conditions), couldn't it be used as a "true" random number generator (with initial pseudo-random seeds for masses and velocities) given its non-deterministic nature?

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• Best C++ IDE or Editor for Windows

  - by GavinR

  What is the best C++ IDE or editor for using on Windows? I use Notepad++, but am missing IntelliSense from Visual Studio.

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• How to use a Proxy with Youtube API? (Python)

  - by Kate

  Hi, I'm working a script that will upload videos to YouTube with different accounts. Is there a way to use HTTPS or SOCKS proxies to filter all the requests. My client doesn't want to leave any footprints for Google. The only way I found was to set the proxy environment variable beforehand but this seems cumbersome. Is there some way I'm missing? Thanks :)

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• On linux, how to check if port is in listen state without trying to connect.

  - by Daniel

  Hi, How do I check with C if a port on my local machine (if required by passing an IP or interface, too), is in listen state? I don't want to connect to this port for checking because I don't want to irritate the service behind this port. I want to use this to add the missing net.tcp.listen item to Zabbix.

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• Regular expression to match non-negative integers in PHP?

  - by kavoir.com

  I seem to get it to work with the following regexp by preg_match(): @^(?:[1-9][0-9]*)|0$@ Yet it's weird that it matches '-0', considering there are no '-' allowed at all in the regexp. Why? What's more weird is that if you switch the parts divided by |: @^0|(?:[1-9][0-9]*)$@ It matches all negative integers such as '-2' and '-10', etc. What am I missing here? Any better regexp for non-negative integer?

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• Getting a list of all children of a given commit

  - by intuited

  I'd like to run git filter-branch on all children of a given commit. This doesn't seem to be an easy task, since there doesn't appear to be a way to tell git rev-list to only return children of a particular commit. Using the .. syntax won't work because it will also include the parent commits of any merge within that range. Am I missing something here?

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• GAE: Why are subclasses NOT instances of db.Model (parent)?

  - by bryanallott

  Given: class A: pass class B(A): pass isinstance(B(), A) will return True. BUT class MyModel(db.Model): pass isinstance(MyModel(), db.Model) returns False(surely True?). What am I missing?

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• Amazon API library for Python?

  - by Kevin

  What Python libraries do folks use for querying Amazon product data? (Amazon Associates Web Service - used to be called E-Commerce API, or something along those lines). Based on my research, PyAWS (http://pyaws.sourceforge.net/) seems okay, but still pretty raw (and hasn't been updated in a while). Wondering if there's an obvious canonical library that I'm just missing.

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• editing swf files in flash

  - by user297627

  after converting my website file from swf to .fla format with the sothink decompiler many of the frames are missing that have text and images in them when i open the converted file in flash cs4..i am using flash and editing website files for the first time a descriptive answer would be appreciated.

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• How do I bit shift a long by more than 32 bits?

  - by mach7

  It seems like I should be able to perform bit shift in C/C++ by more than 32 bits provided the left operand of the shift is a long. But this doesn't seem to work, at least with the g++ compiler. Example: unsigned long A = (1L << 37) gives A = 0 which isn't what I want. Am I missing something or is this just not possible? -J

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• Stop overlooking minor details

  - by Mark Lubin

  Compared to most people on this site I am admittedly a novice. I wanted to get some advice from the pros on how to avoid making stupid errors in your code. Is there anyone else who had the problem when they were first starting out of missing some detail that causes big problems? Are there any habits or behaviors that helped you over come this.

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• Label Text Changed Event

  - by Rajesh

  In my page if the text of a Label has been Changed I need to fire some function using JQuery as .Change() is restricted to only <input> and <select> I use a function like $("#ctl00_ContentPlaceHolder1_lblMsg").html("Duplicate record can't be saved.") .trigger('labelchanged') $("#ctl00_ContentPlaceHolder1_lblMsg").on('labelchanged', function () { alert('changed!'); } }); but the above function is not triggered when the text of the label has been changed kindly anyone point me what could be I am missing in the above function

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• python multiprocessing server connections

  - by tranimatronic

  I wish to get a list of connections to a manager. I can get last_accepted from the servers' listener, but I want all connections. There HAS to be a method I am missing somewhere to return all connections to a server or manager Please help!!

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• when i moved from FW3.5 to FW2.0 i got error

  - by Gold

  hi i have buield my project on VS2008 under FrameWork 3.5 now i need to move to FrameWork 2.0 when i done this, i got this error: Error 1 The type or namespace name 'TypedTableBase' does not exist in the namespace 'System.Data' (are you missing an assembly reference?) C:\Documents and Settings\xxx\Desktop\demo2005\demo\MyDB.Designer.cs 391 68 demo in this line: public partial class DO1TblDataTable : global::System.Data.TypedTableBase<DO1TblRow> { i think that it something with the crystal-report thank's in advance

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• cast error->System.Windows.Forms.DataGridViewSelectedCellCollection' does not contain a definition f

  - by user361108

  hi friend i m getting that error can any one plz help 'System.Windows.Forms.DataGridViewSelectedCellCollection' does not contain a definition for 'Cast' and no extension method 'Cast' accepting a first argument of type 'System.Windows.Forms.DataGridViewSelectedCellCollection' could be found (are you missing a using directive or an assembly reference?)

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• linux, LD_PRELOAD error

  - by user286215

  Hello, i am new in programming under linux and trying to get working this code: http://scaryreasoner.wordpress.com/2007/11/17/using-ld_preload-libraries-and-glibc-backtrace-function-for-debugging/ but getting error: "ERROR: ld.so: object 'libwrap_ioctl.so' from LD_PRELOAD cannot be preloaded: ignored." what can cause it? system - Archlinux, kernel 2.6.32 thank you for answers upd1: "Check with ldd libwrap_ioctl.so if some dependency of this library is missing." checked. no, i have all needed libraries

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• How should i store availability calendar information in mysql? for [id] [date] [available/unavailab

  - by Haroldo

  I'm building a simple calendar for holiday cottages to show when they are booked or available. What would be the fastest mysql table design for this, bearing in mind when users mark dates as available/booked they will do so via a start date and an end date. i can see 2 obvious options Store 'booked' data for every day [more rows] or, store 'booked' data with 2 columns a start_date and end_date [more processing?] Which is best or is there another method i'm missing?

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• memcache, wamp, php 5.4, win8

  - by user1406269

  I am using wamp, PHP 5.4 running on win 8, I can't seem to get PHP to acknowledge the memcache dll. I download php_memcache-3.0.8-5.4-ts-vc9-x86.zip (the only one I could find). I copied the dll to C:\wamp\bin\php\php5.4.12\ext I added extension=php_memcache.dll restart the server. but still I cannot use memcache, and it is missing from Loaded Extensions list. Please supply a step-by-step instruction on how to set this up, Thanks.

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• how to run if(!User.IsAuthenticated) or access Profile.values in App_Code? c# .NET

  - by korben

  i'm trying to run a conditional statement in a class i'm placing in my App_Code folder the condition is whether the person is logged in or not. I normally have two ways to do this in my masterpage and ASPX's if (!User.IsAuthenticated) or if(Profile.username = "anonymous") however neither of these things seem available to me in the .cs i'm making. anyone know what i'm missing? maybe a using namespace up top?

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• RESTful API: How to model 'request new password'?

  - by Jan P.

  I am designing a RESTful API for a booking application and was quite happy to see I could map all details of the application to the 4 HTTP methods. /users - GET, POST /users/({id}|myself) - GET, POST, PUT, DELETE /users/({id}|myself)/bookings - GET, POST /users/({id}|myself)/bookings/{id} - GET, POST, PUT, DELETE Example: Updating my own user uses a PUT to /users/myself. But now I found out that one thing is missing: The possibility to request a new password if I forgot my old one. Any idea how I could add this?

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• Moving SWC to libs folder breaks project

  - by asawilliams

  I have a swc(degrafa) that I have been referencing externally in another folder on my computer. When I tried to move the swc to the libs folder I was no longer able to access the swc from my application. Is there a step im missing?

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• SVN: Recurisvely add files?

  - by Mark

  I'm trying svn add *.py --force As the documentation suggests, but I know for a fact it's missing files nested in deeper folders. Why? Is there a standard way to do this with other unix commands too? */*.py will nab a few more files, but it's kind of a pain in the butt to do this for every possible depth.

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• Installing virtualenvwrapper on Windows

  - by pocoa

  I've installed virtualenv and virtualenvwrapper on Windows using easy_install. But mkvirtualenv is missing. I tried to search on my machine but I couldn't find it. I don't know how to solve it. Do you have any idea?

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• Can you embed PHP code in the output of a CGI script?

  - by Joe Corkery

  I have a CGI based form that I am working with and I would like to be able to include some PHP code in the generated results. However, when I do this, the PHP does not appear to get processed and just ends up being displayed in the resulting web page. Is what I am doing actually possible or am I missing something? Thanks.

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• Validate format of email in rails.

  - by piemesons

  validates_format_of :email, :with => /^([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}" + @"\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9\-]+\" + @".)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)/, :message => "is missing or invalid" Please let me know where is the problem? Is regular expression is wrong?

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