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  • how can iPhone work as usb device?

    - by user262325
    Hello everyone I notice that there some apps make iPhone become a remote mouse or udisk. I guess it change iPhone into a usb device. but I really hope to know the mechanism of these app. Is there any sample code to help me to understand? Thanks interdev

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  • DB Interface Design Optimization: Is it better to optimise for Fewer requests of smaller data size?

    - by Overflow
    The prevailing wisdom in webservices/web requests in general is to design your api such that you use as few requests as possible, and that each request returns therefore as much data as is needed In database design, the accepted wisdom is to design your queries to minimise size over the network, as opposed to minimizing the number of queries. They are both remote calls, so what gives?

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  • Lightweight version control software on Linux

    - by I'm Dario
    I'm working with a shell account in a shared system and I would like to use some version control software for my bash scripts and config files. It must works on Linux with no dependencies, just unpack it in my home dir. I don't need remote checkout, branching or other fancy tricks. I want to be able to commit my changes and restore them if needed.

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  • Listing packages in a repositiory?

    - by noloader
    I'm working on Ubuntu 12.04 Server. I want to install OpenStack, so I enabled the Cloud Archive repo: sudo add-apt-repository cloud-archive:havana After the subsequent update and upgrade, I noticed python-crypto changed. python-crypto recently fixed a CVE, so I would like to ensure I'm using the patched version of python-crypto. I'd also like to compare the python-crypto in both Ubuntu and Cloud Archive. How does one list the package information for both Ubuntu::python-crypto and CloudArchive::python-crypto? (And sorry I could not tag this with apt-cache. Its not available in the list of tags). Thanks in advance

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  • Javascript Alert Return value / Event

    - by Chris
    Hey, The question is pretty simple, but i'm not the big AJAX/JS coder, so I have no clue if it's possible. Is there any way that I can check whether or not an alert() was executed on a remote site? Like if I inputted an alert("Welcome to this site"); through a get variable, is there any way to check if it that alert() was actually executed in the browser? And not necessarily through AJAX/JS.

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  • R language: open ssh connection

    - by marpo_it
    I am trying to open a remote shell via ssh to send commands from R. As long as I send commands, I need to get results and send new commands that depends on the output of the previous ones. For this reason I am looking for a solution to open a connection and manage it from within the R code until I have finished. I also need to open the connection with ssh key exchange (so without password authentication). Looking at CRAN I didn't find anything useful.

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  • What would you like to see in a book about Rails 3?

    - by Ryan Bigg
    Hello, I'm thinking of writing a book about Rails 3 and I have a basic idea of what I want to write about, but really what I need is that little bit of polish from the community. The book is planned to cover: A little bit of Ruby Version control using Git Testing using RSpec & Cucumber Life without Rails (Rack) Developing an application in Rails (vague, I know, sorry! Work in progress) Javascript testing using Selenium Background processing Document databases (a tentative maybe, at this stage) Monitoring an application And a little more. So, I leave this question for you: What do you want to see in a book about Rails 3, which goes from "This is Rails" to "This is how Rails scales"?

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  • In BASH, are wildcard expansions guaranteed to be in order?

    - by ArtB
    Is the expansion of a wildcard in BASH guaranteed to be in alphabetical order? I forced to split a large file into [10Mb pieces][1] so that they can be be accepted by my Mercurial repository. So I was thinking I could use: split -b 10485760 Big.file BigFilePiece. and then in place of: cat BigFile | bigFileProcessor I could do: cat BigFilePiece.* | bigFileProcessor In its place. However, I could not find anywhere that guaranteed that the expansion of the asterisk (aka wildcard, aka '*' ) would always be in alphabetical order so that .aa came before .ab ( as opposed to be timestamp ordering or something like that ). Also, are there any flaws in my plan? How great is the performance cost of cating the file together?

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  • Chain of Responsibility Pattern: is it a good practice to have interdependent handlers?

    - by wei
    I have this scenario: I have a chain of query handlers, the first is to query the cache, if the cache can't answer it or the answer is stale, then hit a database, if it can't find the answer or the answer is stale again, then query a remote web service. But I am not sure if this is the right way to use this pattern, since the work flow is pretty much fixed, and the cache and database handlers depend on the next step's return result to refresh its records.

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  • HTML5 offline cache google font api

    - by Bala Clark
    I'm trying to create an offline HTML5 test application, and am playing with the new google fonts api at the same time. Does anyone have any ideas how to cache the remote fonts? Simply putting the api call in the cache manifest doesn't work, I assume this is because the api actually loads other files (ttf, eot, etc). Any ideas if using the font api offline would be possible? For reference this is the call I am making: http://fonts.googleapis.com/css?family=IM+Fell+English|Molengo|Reenie+Beanie

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  • Trac permission denied for SVN repo

    - by plesatejvlk
    I'm running Apache2,SVN & Trac on OpenSUSE. SVN works like a charm. I've initialized trac environment for one of my SVN repositories for trac to show source code in it's repo browser and I set the repository up in the Trac web admin. I also ran the trac-admin resync for that repo without problems. Trouble is when I open the Trac repo browser I get: "can't open file: /srv/svn/repos/myrepo/format, access denied)" error. I checked the permissions and: apache runs as wwwrun tracd runs as wwwrun the whole subtree /srv/svn/... belongs to svn group and the group has rw perms all the way down to the "format" file wwwrun is in the svn group I also did the perms check: $ sudo -u wwwrun cat /srv/svn/repos/myrepo/format and got it printed out without trouble. So in my opinion there shoud not be any permission conflict. Any idea what else to check? Thanks in advance!

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  • Windows user control hosted in IE is not working.

    - by kumar
    Hi i have hosted a windows user control in IE. Every thing is working fine, if i open the application in the same machine where the Web application is hoste. if i access the same appication from a remote client IE, A blank box is coming with a small image in the corner. I have added the site as trusted site in the IE and made all the security settings needed. let me know, what am i doing wrong. Thanking you.

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  • How to determine if object in another AppDomain has gone

    - by Dmitry Lobanov
    I instantiate an object of some class in other ApDomain using CreateInstanceAndUnwrap(). I can determine if this object resides in other domain by using RemotingServices.IsTransparentProxy(). But can I determine if the real remote object has gone away (e.g. was garbage collected) without probing a call on proxy and catching RemotingException? Is it possible?

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  • Ways to deduplicate files

    - by User1
    I want to simply backup and archive the files on several machines. Unfortunately, the files have some large files that are the same file but stored differently on different machines. For instance, there may a few hundred photos that were copied from one computer to the other as an ad-hoc backup. Now that I want to make a common repository of files, I don't want several copies of the same photo. If I copy all of these files to a single directory, is there a tool that can go thru and recognize duplicate files and give me a list or even delete one of the duplicates?

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  • Recommendations for java captcha libraries

    - by skaffman
    I'm looking for a replacement for JCaptcha, which doesn't seem to be maintained any more, and isn't very good to begin with. The replacement has to integrate nicely with JavaEE webapps. As I can see it, there are three options: JCaptcha - No longer maintained, crude API SimpleCaptcha - much nicer API, nicer captchas, but seems to be Java6 only ReCaptcha - easy to use, uses remote web-service to generate captchas, but not much control over look and feel Has anyone used any others, that they'd recommend?

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  • Free JVM profilers for websites

    - by 2Real
    I'm looking for a JVM profiler (preferably open source) so I can look at the heap and cpu usage of my personal website. I've used Lambda Probe, and I like it because it provides a web interface for my remote Unix computer that has no display. I was wondering what else is available Thanks,

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  • Not sure what happens to my apps objects when using NSURLSession in background - what state is my app in?

    - by Avner Barr
    More of a general question - I don't understand the workings of NSURLSession when using it in "background session mode". I will supply some simple contrived example code. I have a database which holds objects - such that portions of this data can be uploaded to a remote server. It is important to know which data/objects were uploaded in order to accurately display information to the user. It is also important to be able to upload to the server in a background task because the app can be killed at any point. for instance a simple profile picture object: @interface ProfilePicture : NSObject @property int userId; @property UIImage *profilePicture; @property BOOL successfullyUploaded; // we want to know if the image was uploaded to out server - this could also be a property that is queryable but lets assume this is attached to this object @end Now Lets say I want to upload the profile picture to a remote server - I could do something like: @implementation ProfilePictureUploader -(void)uploadProfilePicture:(ProfilePicture *)profilePicture completion:(void(^)(BOOL successInUploading))completion { NSUrlSession *uploadImageSession = ..... // code to setup uploading the image - and calling the completion handler; [uploadImageSession resume]; } @end Now somewhere else in my code I want to upload the profile picture - and if it was successful update the UI and the database that this action happened: ProfilePicture *aNewProfilePicture = ...; aNewProfilePicture.profilePicture = aImage; aNewProfilePicture.userId = 123; aNewProfilePicture.successfullyUploaded = NO; // write the change to disk [MyDatabase write:aNewProfilePicture]; // upload the image to the server ProfilePictureUploader *uploader = [ProfilePictureUploader ....]; [uploader uploadProfilePicture:aNewProfilePicture completion:^(BOOL successInUploading) { if (successInUploading) { // persist the change to my db. aNewProfilePicture.successfullyUploaded = YES; [Mydase update:aNewProfilePicture]; // persist the change } }]; Now obviously if my app is running then this "ProfilePicture" object is successfully uploaded and all is well - the database object has its own internal workings with data structures/caches and what not. All callbacks that may exist are maintained and the app state is straightforward. But I'm not clear what happens if the app "dies" at some point during the upload. It seems that any callbacks/notifications are dead. According to the API documentation- the uploading is handled by a separate process. Therefor the upload will continue and my app will be awakened at some point in the future to handle completion. But the object "aNewProfilePicture" is non existant at that point and all callbacks/objects are gone. I don't understand what context exists at this point. How am I supposed to ensure consistency in my DB and UI (For instance update the "successfullyUploaded" property for that user)? Do I need to re-work everything touching the DB or UI to correspond with the new API and work in a context free environment?

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  • Where should I store my App specific config files in WPF

    - by Akash Deshpande
    Background : I have some Application Data. i.e. the Database, come important config files. This data is vital for the application to start else it is exited. Problem : Where should I store this data. i.e in which folder and where. Right Now (This is wrong) it is stored in a folder in Debug/App_Data. But is causing issues in git and when we publish the App the data is not found. So where can we store this folder ? Present Structure is "WpfApplication2\WpfApplication2\bin\Debug" These Files need to be present when the app is started. So they need to be a part of the app itself.

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  • Is Active Directory required for a team using TFS 2010?

    - by Andy
    I am new to TFS 2010 and wanted to give it a fair try for a small project with a team of 2-3 remote people. Is it a requirement that all my team users are part of an Active Directory network setup? or can I have my team-members to be loosely coupled and be able to login using username/password?

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  • Get methods params type parsing wsdl file in a rails/ruby application

    - by Marco Sangiorgi
    Hi, I have a question about ruby and wsdl soap. I couldn't find a way to get each method's params and their type. For example, if I found out that a soap has a methods called "get_user_information" (using wsdlDriver) is there a way to know if this method requires some params and what type of params does it require (int, string, complex type, ecc..)? I'd like to be able to build html forms from a remote wsdl for each method... Sorry for my horrible English :D

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  • How to setup VPN on home network

    - by Tone
    I am a software developer. I travel and sometimes have a need to access my files at home and tweak other family members computers. I would like to connect to my home network via VPN and then RDP into whatever machine i need to. Currently i have a Windows Server 08 machine, which is my file server, database server, web server (for development work), source control repository, etc. (and also somewhat of a workstation when i need it to be). I want to use this same machine to run my VPN through. I have a linksys WRTG54 router. My ISP is AT&T DSL, with a dynamic IP address - so i'm assuming I'll either need to request a static IP or sign up with one of those static ip services.. where it keeps your dynamic ip synced up with a static one. While I do understand software engineering I am no expert in networking. What do i need to do to setup my VPN?

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