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• lmerTest package install failing on Ubuntu 12.04

  - by Alexandra Tyers

  I'm running Ubuntu 12.04.5 LTS precise 32-bit and trying to install the lmerTest package for R version 2.14.1... When I try to install from the CRAN repository or R-forge: install.packages("lmerTest") or install.packages("lmerTest", repos="http://R-Forge.R-project.org"), I get the error: Warning in install.packages : package ‘lmerTest’ is not available (for R version 2.14.1) So I downloaded the Package Archive File from CRAN and tried to install from this Package source: lmerTest_2.0-11.tar.gz ,but get the error: "installation of package /home/.../lmerTest_2.0-11.tar.gz’ had non-zero exit status" I had a similar problem when trying to install lme4, and using the advice from lme4 package install failing on Ubuntu 12.04 was able to download the package using "sudo apt-get install r-cran-lme4" after which it appeared in my R package list and installed fine from there. I tried a similar tactic with lmerTest "sudo apt-get install r-cran-lmerTest" but just get "Unable to locate package r-cran-lmerTest", so really don't know what to do now, bearing in mind that I'm a novice with both Ubuntu and R, any suggestions/help would be much appreciated

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• What's the best way to authorize a USB Key

  - by ScottCate

  We have an auto update for our software that is installed via USB key (with the auto run). If I wanted to ensure that only authorized USB Keys were used, what's the best way? Our installer is already signed, and it won't run otherwise. But I'm more wanting to inspect the USB Key for a signed installer, and if it's not there, just ignore, or even "Eject" the USB device. And I should be able to tell the difference (in code) between a usb storage device, and say a camera, or keyboard. I'm only wanting to disable non-authorized storage devices. Thank you for your ideas.

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• Processing incoming email

  - by Mike Schots

  How do I programmatically read an incoming email with .NET. I need a method to take the content of email message (in this case XML) on a POP server and read it into my application. Ideally this could be solved by: .NET code that I can run as a background task on my webserver to process the email. A service that can POST the contents of the email to my webserver. Although I'm open to other options. EDIT: Copied from the "non-answer": Currently, we're looking at using the email accounts our hosting company provides. Our own mail server could potentially be an option, but its something the we'd need to contact the host about.

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• gcc-4.2 failed with exit code 1 iphone

  - by SKayser

  Hi, I've seen this error with different variations on discussion forums but being a non programmer I'm not sure how to progress this. Basically I have code which I found to help me with changing the background colors of cells on a grouped uitableview. The code introduced a line as such: CGContextAddArcToPoint(c, minx, miny, midx, miny, ROUND_SIZE); This gave an error indicated that it wasn't declared, so I added to my .h file the following under import uikit: #import <UIKit/UIKit.h> #define ROUND_SIZE 10 Now it shows that I have an error: Command/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc-4.2 failed with exit code 1 iphone Some discussions talk about libraries but because I don't have a programming background I don't understand what to do. I also see that some people show a log output but I'm not sure where that comes from as I don't get any debug windows because I'm guessing it doesn't get that far. I simply click 'Build and Go' and I get this error in the Message window. Any thoughts?

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• What technical/legal responsibilities do I have when hosting images uploaded by others?

  - by Ferdy

  You may argue that this question has a legal flavor to it, and that would be correct. Still, it is also a question from a developer's perspective that may help others. I'm building an image community web site/application. Users can upload images. During upload, users have to select the license (copyrighted, attribution non-commercial or public domain). No matter which license they choose, it is just a piece of data. No matter the license, all users can view all images and also download all images, as you normally do on websites. My question is: what responsibility do I have as a "platform" to comply with these licenses? Do I need to actively prevent certain actions on these images, and into what extend? Is displaying the license enough to be legally safe? What if one of my users uploads images for which he has no license? Is it enough to just implement a "report this" feature?

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• Java: design problem with final-value and empty constructor

  - by HH

  $ javac InitInt.java InitInt.java:7: variable right might not have been initialized InitInt(){} ^ 1 error $ cat InitInt.java import java.util.*; import java.io.*; public class InitInt { private final int right; // Design Problem? // I feel the initialization problem is just due to bad style. InitInt(){} InitInt{ // Still the error, "may not be initialized" // How to initialise it? if(snippetBuilder.length()>(charwisePos+25)){ right=charwisePos+25; }else{ right=snippetBuilder.length()-1; } } public static void main(String[] args) { InitInt test = new InitInt(); System.out.println(test.getRight()); } public int getRight(){return right;} } Partial Solutions and Suggestions use "this" to access methods in the class, instead of creating empty constructor change final to non-final with final field value: initialize all final values in every constructor remove the empty constructor, keep your code simple and clean

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• May the FileInputStream.available foolish me?

  - by Tom Brito

  This FileInputStream.available() javadoc says: Returns an estimate of the number of remaining bytes that can be read (or skipped over) from this input stream without blocking by the next invocation of a method for this input stream. The next invocation might be the same thread or another thread. A single read or skip of this many bytes will not block, but may read or skip fewer bytes. In some cases, a non-blocking read (or skip) may appear to be blocked when it is merely slow, for example when reading large files over slow networks. I'm not sure if in this check: if (new FileInputStream(xmlFile).available() == 0) can I rely that empty files will always return zero?

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• Any tool available to detect what's not HTTPS on an encrypted page?

  - by Keltex

  More often than I like when designers edit some of our sites' pages, they include javascript or an external image our SSL pages that are not encrypted. For example if we have a page like this: https://www.example.com/cart/EnterCreditCard And the designer includes some non-encrypted image like this: <img src='http://www.cardprocessor.com/logo.gif' /> Of course, this creates errors in all browsers: IE: Do you want to view only the webpage content that was delivered securely? Firefox: Connection Partially Encrypted Chrome: (I forget this message) What I'm looking for is a tool or plugin that lets me easily see what objects are not encrypted. A firefox extension or something along those lines would be great.

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• Trouble making OAuth signed requests

  - by behrk2

  Hello, I am able to successfully make non-authenticated and protected calls to the Netflix API. I am having a little trouble making signed requests to the catalog, however. Using the OAuth Test page, it is clear to me that my Base String is correct. My request URL is also correct, except for the oauth_signature. The oauth_signature is the only thing that differs. If I understand correctly, the only difference between a protected call and a signed call is that there are no tokens involved, and that I am appending on call parameters (such as term). So, I am using the exact same code that I use for my protected calls that I am for my signed calls, except my signature key ONLY contains my shared secret (with an ampersand sign on the end of it). It does not use the access token. Am I missing something here? Where else can I be going wrong? Thanks!

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• editing a file with vim that has no EOL marker on the last line but has CRLF line endings

  - by rmeador

  I often have to edit script files, the interpreter for which treats files that have an EOL marker on the last line of the file as an error (i.e. the file is treating CRLF as "newlines", not as "line endings"). Currently, I open these files in Vim using binary mode (-b on the command line). It autodetects the lack of EOL on the final line and sets the "noeol" option appropriately, which prevents it from writing an EOL on the last line. Because the file has CRLF line endings, I get lots of ^Ms at the end of my lines (because it interprets only Unix-style line endings in binary mode, it seems). I can't open it in text mode because the "noeol" option is ignored for non-binary files. This is very annoying, and I always have to remember to manually type the ^M at the end of each line! Is there some way I can force it to accept DOS-style line endings in binary mode, or force it to listen to the EOL option in text mode?

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• Generating VS 2005 .vcproj's by hand

  - by Kevin

  I'm working on a script that generates Visual Studio 2005 C++ project files (.vcproj). The script reads a makefile, then spits out a c++ project. INPUT: makefile --- OUTPUT: VS 2005 c++ project (.vcproj) However, when I try to build the auto-generated project in VS 2005, error outputs: "Unspecified Error." Evidently, I am not generating the VS 2005 .vcproj file correctly. Assuming that my c++ project file was malformed, I opened up VS 2005 and made a new C++ project. I actually copied the good, VS 2005-created project file to my non-working, malformed project file. I replaced the Name, Reference Includes (.libs), Compile Includes (.cc, .c), etc. in the good VS 2005 project with my malformed project file's information. However, I still cannot get VS 2005 to compile my .vcproj. Perhaps VS 2005 is very particular about the content of its .vcproj's? Please give me advice on how to manually generate a VS 2005 .vcproj. Thanks!

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• ASP.NET MVC F# controller action ignoring parameter

  - by Matt H

  Hi. I have a C# ASP.NET MVC project but my controllers are written in F#. For some reason, the following code doesn't work properly. namespace MvcApplication8.Controllers open System.Web.Mvc [<HandleError>] type ImageController() = inherit Controller() member x.Index (i : int) : ActionResult = x.Response.Write i x.View() :> ActionResult The parameter of the action is seemingly ignored. http://localhost:56631/Image/Index/1 = The parameters dictionary contains a null entry for parameter 'i' of non-nullable type 'System.Int32' for method 'System.Web.Mvc.ActionResult Index(Int32)' in 'MvcApplication8.Controllers.ImageController'. An optional parameter must be a reference type, a nullable type, or be declared as an optional parameter. Parameter name: parameters The controller otherwise works fine. I know that plenty of people have written F# mvc code, so, any ideas where I'm going wrong?

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• custom MSSQL driver

  - by hoodoos

  I had a crazy thought about writing my own MSSQL driver to make it work something like non-blocking http client, so it won't be thread thirsty and could handle lots of db queries within one thread. I tried to look over google for some guidelines about implementing MSSQL client protocol, but found none really, where do those guys get information about it when they write own implementations for PHP or python? I need a really low level to be documented so I can implement all phases of working with a connection through sockets. And would be really nice to have a an example in c# langauge. :)

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• Simple number-to-number (or number-to-hex) encryption algorithm that minimizes # of characters

  - by Clay Nichols

  I need to encrypt a number and I and this encrypted value will be given to a customer ask a key so I want to minimize the number of digits and make them all printable. So I'd like the result to be either all number or all Hex characters. The current encryption method I'm using (for non numbers) converts the characters to hex (2 hex digits each). That doubles the number of characters. I also considered just treating the input as hex (so each pair of numbers is treated as a Hex pair, but then you have ambiguity between an input of 0123 and 123 (when decrypting that leading '0' is lost. Any suggestions?

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• What to name this class?

  - by orlandu63

  (This is not an interface: I simply omitted the method bodies) class _ { protected $_data = array(); function __construct($data); function set($name, $value); function get($name); function __set($name, $value); function __get($name); //aliases for their respective non-magic methods. # and some other generic methods } Essentially it's a class that provides a magical object-oriented reusable access layer to some data. I've considered DataLayer, DataObject and some others; I'd like to hear some suggestions from someone who's more terminologically savvy.

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• JBoss Seam: components injected into POJOs, but not Session Beans

  - by purecharger

  I have a Seam component that handles login, with the name "authenticator": @Name("authenticator") public class AuthenticatorAction implements Authenticator { @PersistenceContext private EntityManager em; @In(required=false) @Out(required=false, scope = SESSION) private User user; public boolean authenticate(){ ... } } This works just fine, Seam injects the EntityManager instance. However, as soon as I add the @Stateless annotation, none of the injection happens! In this case, the EntityManager instance is null upon entry to the authenticate() method. Another interesting note is that with a separate stateful session bean I have, the Logger instance in that class is only injected if I make it static. If i have it non-static, it is not injected. Thats fine for the logger, but for stateless session beans like that, I obviously can't have static member variables for these components. I'm confused because this authenticator is exactly how it is in the Seam booking example: a stateless session bean with a private member variable being injected. Any ideas?

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• Visual Studio 2008 - Focus on textbox doesn't work when run from VS2008 as admin

  - by Steve

  This is a minor, esoteric problem and not a showstopper, but I'm wondering what other VS2008 idiosyncrasies are out there. If you make a web app, add a textbox and run a focus function for the textbox on page load, it works when you run VS not as administrator from a Vista non-administrator account or if you run the page from a browser instance run on its own, not from VS. If you browse the page from VS as Admin, the focus doesn't work. This for Cassini and from the local IIS. Stuff like this just makes me trust VS a tad less.

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• paypal redirect on successful checkout

  - by Graeme Leighfield

  I am trying to get my Paypal subscription to redirect to a custom page after a successful checkout. Before submitting to Paypal I overload the submit handler, run my own function (to store details) and return a unique id. I want to attach that id to my return URL. (as a GET or POST var so to speak) I have turned auto redirect "on" in my Paypal sandbox sellers preferences, but it only seems to re-direct to the URL that I HAVE to put in there. using the <input type="hidden" name="return" value="someurl" /> does no seem to work. I want it this way so that I can capture the user information when entered with a "non-paid" flag, then via the IPN I can update that record with a "PAID" flag, and I want to use the unique ID to tie it all together so to speak. Any advice or a different approach is welcomed. Many thanks!

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• Change Emacs Default Coding System

  - by Saterus

  My problem stems from Emacs inserting the coding system headers into source files containing non-ascii characters: # -*- coding: utf-8 -*- My coworkers do not like these headers being checked into our repositories. I don't want them inserted into my files because Emacs automatically detects that the file should be UTF-8 regardless so there doesn't seem to be any benefit to anyone. I would like to simply set Emacs to use UTF-8 automatically for all files, yet it seems to disagree with this idea. In an effort to fix this, I've added the following to my .emacs: (prefer-coding-system 'utf-8) (setq coding-system-for-read 'utf-8) (setq coding-system-for-write 'utf-8) This does not seem to solve my problem. Emacs still inserts the coding-system headers into my files. Anyone have any ideas? EDIT: I think this problem is specifically related to ruby-mode. I still can't turn it off though.

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• How often do you find javascript disabled on browsers?

  - by Mark Redman

  I have started using ajax/jQuery in our websites / application. There are many plugins that support degrading the javascript to browsers that dont have javascript enabled and techniques to support this. What are peoples thoughts on javascript support, we build applications rather than just websites and are looking to just support javascript enabled browsers as a pre-requisite assuming that most people or companies have javascript enabled. Do you find most people have javascript? do you monitor the percentage of javascript/non-javascript browsers (I guess this can be done with website stats) and what are the numbers regarding this?

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• Anyone using a CMS with a DAM back-end for Asset Management?

  - by Valien

  Anyone here have any experience with using a CMS system for content and populating the site with images/assets from a DAM system? Working with a large number of assets (photos, logos, files, etc) that will be stored on a DAM system for management, revisions, etc. Would like to build a front-end system to help serve up the assets for the users as well as keep the general site updated with non-asset information (like what's new, faq's, etc.) Any ideas/thoughts on this from anyone who has been down this path? Thanks! ~Allen

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• Google datastore stats

  - by Keyur

  I am querying the __Stat_Kind__ kind. It does not return me entities about kinds that currently exist in the datastore but it includes entities about kinds that I had deleted more than a week ago. I am not so much concerned about it returning me the non-existent kinds - the doc does mention this scenario after all. But I am concerned that it does not return me info about my current kinds. Is this a known issue or am I doing something wrong? To folks on the app engine team: Also, on the dev server neither __Stat_Kind__ nor __Stat_Total__ return any entities. Which means I need to deploy my app to appspot before I can test this behavior. It would be nice if the dev server did return some basic info. Thanks, Keyur

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• C# differences between Windows Mobile and regular Windows

  - by Matt

  Are there many differences between Windows and Windows Mobile as far as C# programming is concerned? I can write some moderately complicated programs in C#, but I'm not sure if it would just run perfectly on a Windows smartphone, or if something has to be done to port it. If so, is there a tool that will automatically revise code to make it mobile-compatible? The reason I ask is that the new Windows mobile 7 will only support a few methods of app development, one of which is C#. Also, do smartphones with non-windows operating systems have C# support available? Or can C# code be converted to Symbian or iPhone or whatever? Thanks for any help you can provide.

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• How does a virtual machine work?

  - by Martin

  I've been looking into how programming languages work, and some of them have a so-called virtual machines. I understand that this is some form of emulation of the programming language within another programming language, and that it works like how a compiled language would be executed, with a stack. Did I get that right? With the proviso that I did, what bamboozles me is that many non-compiled languages allow variables with "liberal" type systems. In Python for example, I can write this: x = "Hello world!" x = 2**1000 Strings and big integers are completely unrelated and occupy different amounts of space in memory, so how can this code even be represented in a stack-based environment? What exactly happens here? Is x pointed to a new place on the stack and the old string data left unreferenced? Do these languages not use a stack? If not, how do they represent variables internally?

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• Entity framework error: The conversion of a datetime2 data type to a datetime data

  - by EdenMachine

  I know there are a ton of posts about this issue but none of them seem to solve my problem. Here's the scenario: I have a CreateDate DateTime column in my MS SQL Server database User table that is non-nullable and is automatically set using GetDate() method in "Default Value or Binding" setting. I am able to create a User just fine with the standard EF Insert but when I try to update the user, I get this error: The conversion of a datetime2 data type to a datetime data type resulted in an out-of-range value. What is the trick to not having the EF worry about the CreateDate column for updates? I have the StoreGenerationPattern = Identity but that isn't helping. Here are the EF properties for my Entity Property: http://screencast.com/t/8ndQRn9N And here is my Update method: http://screencast.com/t/UXIzhkhR

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