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• Why use nginx with Catalyst/Plack/Starman?

  - by Eric Johnson

  I am trying to deploy my little Catalyst web app using Plack/Starman. All the documentation seems to suggest I want to use this in combination with nginx. What are the benefits of this? Why not use Starman straight up on port 80?

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• two's complement, why the name "two"

  - by lenatis

  i know unsigned,two's complement, ones' complement and sign magnitude, and the difference between these, but what i'm curious about is: why it's called two's(or ones') complement, so is there a more generalize N's complement? in which way did these genius deduce such a natural way to represent negative numbers?

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• Why is a DataGridView so row-centric.

  - by Spike

  Why is there a DataGridViewRow.Cells property, but not a DataGridViewColumn.Cells property? What's so important about rows that I'll never want to iterate down a column? I'm not saying that it makes it particularly difficult to do or anything, it just strikes me as oddly asymmetrical. I'm implementing a "fill down" type behaviour, and it'd be handy is all.

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• Why sometimes Windows cannot kill a process?

  - by Néstor Sánchez A.

  Right now I'm trying to Run/Debung my app on VisualStudio, but it cannot create it because the las instance of the app.vshost.exe is still running. Then, by using the Task Manager i'm trying to kill it, but it just remains there with no signal of activity. Beyond that particular case (maybe a VS bug), i'm very curious about the technical reasons why sometimes Windows cannot kill a process??? Can, an enlighted OS related developer, please try to explain? (And please don't start a Unix/Linux/Mac battle against Windows)

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• Why were most java.util.Date methods deprecated?

  - by tieTYT

  When you look at the javadoc of the java.util.Date class, most of the methods are deprecated. Why was this done?

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• Why is IronPython faster than the Official Python Interpreter

  - by Tristan Havelick

  According to this: http://www.codeplex.com/IronPython/Wiki/View.aspx?title=IP20VsCPy25Perf&referringTitle=IronPython%20Performance IronPython (Python for .Net) is faster than regular Python (cPython) on the same machine. Why is this? I would think compiled C code would always be faster than the equivalent CLI bytecode.

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• Why meta refresh followed by 2 redirects?

  - by twneale

  I have encountered several websites where the initial visit by a user results in a http-equiv refresh to another (usually gibberish) url, which then promptly redirects (302) to another gibberish url, which in turn immediately redirects to yet a fourth url that actually displays the landing page for the site. My question is: what the heck? Why would a server be set up to behave this way? Here is list of a few sites that do this: New York State Library - http://nysl.nysed.gov New York State Regulations provided by Westlaw - http://government.westlaw.com/linkedslice/default.asp?SP=nycrr-1000

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• Why isn't ValidateRequest="true" enough for XSS prevention?

  - by Microserf

  In the notes for Step 1 in the "How To: Prevent Cross-Site Scripting in ASP.NET" it is stated that you should "not rely on ASP.NET request validation. Treat it as an extra precautionary measure in addition to your own input validation." Why isn't it enough?

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• Why use Monte-Carlo method?

  - by Gili

  When should the Monte-Carlo method be used? For example, why did Joel decide to use the Monte-Carlo method for Evidence Based Scheduling instead of methodically processing all user data for the past year?

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• Why PreAuthenticate is not enabled by default?

  - by dr. evil

  As far as I understand WebRequest.PreAuthenticate is almost always good. If I enable it even when there is no credential it won't try to authenticate, if there is a credential it'll. So is there any legitimate reason to set it False? Or is it OK to set it True even when there is no credentials? And since it's quite useful why it's not enabled by default just like many other HTTP features?

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• Why did Dylan lose to Objective-C

  - by Adam Gent

  I have played/worked with many different programming languages and Dylan is still one of my favorites. My question is why did Dylan fail when Objective-C, Ruby and even Scheme have had more success? Was Dylans performance that much worse than Objective-C that Apple went with it or was purely for social/political reasons. Hopefully someone from apple will see this question :) BTW if you have no idea what Dylan is please google Dylan Progrmaming Language.

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• Why can't my Apache see my media folder?

  - by alex

  Alias /media/ /home/matt/repos/hello/media <Directory /home/matt/repos/hello/media> Options -Indexes Order deny,allow Allow from all </Directory> WSGIScriptAlias / /home/matt/repos/hello/wsgi/django.wsgi /media is my directory. When I go to mydomain.com/media/, it says 403 Forbidden. And, the rest of my site doesn't work because all static files are 404s. Why? Edit: hello is my project folder

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• Why Does RTP use UDP instead of TCP?

  - by mahesh

  I wanted to know why UDP is used in RTP rather than TCP ?. Major VoIP Tools used only UDP as i hacked some of the VoIP OSS.

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• Why are IOC containers unnecessary with dynamic languages

  - by mikemay

  Someone on the Herding Code podcast No. 68, http://herdingcode.com/?p=231, stated that IOC containers had no place with Python or Javascript, or words to that effect. I'm assuming this is conventional wisdom and that it applies to all dynamic languages. Why? What is it about dynamic languages that makes IOC containers unnecessary?

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• Why does IE6 give an "expected Identifier error" when using jQuery $.fn

  - by codeninja

  I keep getting an expected identifier error at this line in my code =/ $.fn.myPlugin = $.myPlugin; any idea why this might be happening?

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• email bounce from mail-abuse why ?

  - by air

  when i try to send email from asp script i got email bounce from [email protected] why this ? is this some issue with spam or my domain is under spam list ..? if yes how to remove this..?

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• Why do Lazy Languages not have mutation?

  - by forellana

  Hi to everyone, I'm studying about programming language's theory and I can't figure out a solid reason to why lazy languages doesn't have mutation? Does anyone know the reason?

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• Why did Dylan loose to Objective-C

  - by Adam Gent

  I have played/worked with many different programming languages and Dylan is still one of my favorites. My question is why did Dylan fail when Objective-C, Ruby and even Scheme have had more success? Was Dylans performance that much worse than Objective-C that Apple went with it or was purely for social/political reasons. Hopefully someone from apple will see this question :) BTW if you have no idea what Dylan is please google Dylan Progrmaming Language.

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• wcf service not showing Publish option Why?

  - by Rajesh

  Hi all, I written one WCF service after that i am trying to Publish(after Build) this service. But solution not showing Publish Option and also not creating any .svc file in the solution why? Thanks in advance. Regards, Rajesh

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• web.config overrides app.config...why?

  - by vikp

  Hi, I have to DLLs: one with a web.config, another one with app.config I moved the connection strings from web.config to app.config so that it can be used by other DLLs. Now, when I call ConfigurationManager.GetSection("SomeSection") , the application looks for a web.config, when it should be looking for the app.config. It doesn't make sense why it does it because web.config is in a separate DLL. Can anybody explain this please?

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• Why is file_get_contents() faster than using fsock_open()?

  - by eds

  In PHP, sometimes I want to send an HTTP request to a remote site just to look at the response headers, so I declare it all manually and use the fsock_open() function. However, this goes much slower than calling file_get_contents() with a remote URL (which loads the whole page content). Why is this? Is there a good alternative way to get just the response headers (to check if a page returns a 404 error, for example) that works as fast as file_get_contents()?

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• Why doesn't GWT use gwt-dispatch?

  - by Stephane Grenier

  After looking into gwt-dispatch and the Google Wave I/O presentation (Best practices) (video here), I'm wondering why the official GWT release (2.0) doesn't use dispatch (ie. the command pattern) for it's RPC calls. Does anyone know?

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• ZSH: why error using array: "illegal character: ^M"?

  - by HH

  $ values=( 300 400 ) $ echo "scale=20; $values[1]-$values[2]" | bc (standard_in) 1: illegal character: ^M // Why does it not print -100? $ echo $values // no ^M sign found! 300 400

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• Why declare "private List contactInfos" without a generic ("private List <ContactInfo> contactInfos"

  - by g_imp

  In this example from the App Engine docs, why does the example declare contactInfos like this (no Generics): import javax.jdo.annotations.Element; // ... @Persistent @Element(dependent = "true") private List contactInfos; instead of like this, using a Generic: import javax.jdo.annotations.Element; // ... @Persistent @Element(dependent = "true") private List <ContactInfo> contactInfos;

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• Why is it called "Cloud"?

  - by Vimvq1987

  Yes, as you might guess, I want to ask about Cloud-computing. I doubt that why it's called that. Which characteristics of it made that name?

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