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• What's the equivalent to "method reference" in Ruby

  - by Oscar Reyes

  for instance in python it is possible to assign a method to a variable: class MyClass def myMethod(self): return "Hi" x = MyClass() method = x.myMethod print method() # prints Hi I know this should be possible in Ruby, but I don't know what's the syntax.

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• c# reflection: How can I invoke a method with an out parameter ?

  - by ldp615

  I want expose WebClient.DownloadDataInternal method like below: [ComVisible(true)] public class MyWebClient : WebClient { private MethodInfo _DownloadDataInternal; public MyWebClient() { _DownloadDataInternal = typeof(WebClient).GetMethod("DownloadDataInternal", BindingFlags.NonPublic | BindingFlags.Instance); } public byte[] DownloadDataInternal(Uri address, out WebRequest request) { _DownloadDataInternal.Invoke(this, new object[] { address, out request }); } } WebClient.DownloadDataInternal has a out parameter, I don't know how to invoke it. Help!

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• VB.Net Split A Group Of Text

  - by Ben

  I am looking to split up multiple lines of text to single them out, for example: Url/Host:ftp://server.com/1 Login:Admin1 Password:Password1 Url/Host:ftp://server.com/2 Login:Admin2 Password:Password2 Url/Host:ftp://server.com/3 Login:Admin3 Password:Password3 How can I split each section into a different textbox, so that section one would be put into TextBox1.Text on its own: Url/Host:ftp://server.com/1 Login:Admin1 Password:Password1 Thanks in advance :)!

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• How to build a library for both iPhone simulator and device?

  - by iPhoney

  I want to build a static library for iphone. I want to give my users the .a library which they can use for both simulator test and device test. Do I have to build two library in simulator mode and device mode? Is there any way to build a single one that can be used for both platforms?

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• How to save a custom cookie

  - by xRobot

  Is there a way to save a cookie that is available on other site ? For instance I have my django project on http://www.example.com and I want that django saves a cookies for a site written in PHP on http://site.Idontknow.com . Is this possible ?

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• Is it possible to use PDT to debug through a tunnel with XDebug?

  - by Craig Gardner

  I'm trying to debug using PDT and Xdebug over a tunnel and haven't been able to get PDT to connect properly. I do not have PHP installed on the machine I am developing on and would like to connect to the XDebug instance that is running on my development machine that is not able to talk directly with my machine.

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• How to implement a list fold in Java

  - by Peter Kofler

  I have a List and want to reduce it to a single value (functional programing term "fold", Ruby term "inject"), like Arrays.asList("a", "b", "c") ... fold ... "a,b,c" As I am infected with functional programing ideas (Scala), I am looking for an easier/shorter way to code it than sb = new StringBuilder for ... { append ... } sb.toString

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• Render partial view with updated value.

  - by janiya

  I am working on asp.net mvc project using views and partial views. Multiple partial views are being rendered in single view. Now my problem is that when ever i update some values in partial view and render it again through controller it does not show partial view with updated value.... to see updated value i have to refresh the page each time.

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• How to add days to a date in Java

  - by terrific

  I want to add days to a date to get a new date in Java. How to achieve it using the Calender class. Calender dom = new GregorianCalender(d, m y); is the instance of my date of manufacture and I want to reach to date of expiry adding some 100 days to the current date and store it in doe but unable to do that. Any help would be appreciable.

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• What is sender?

  - by marty

  I can't find this answer anywhere. What does it mean when there's a sender parameter in a method header? Does it represent the instance that called it, or the method that called it?

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• how do i merge two audio files and one video file in to a video file using c# ?

  - by wingdings

  i wrote a program in c# using directshow , that captures all devices' audios , and video from single device (webcam or external camera) , now that my requirement is to merge selected audio files with one video file and i can not get it done in c#. so i need a program or libraries that merges one(or several) audio file(s) and one video file and save it as an avi VIDEO file ,, both audio file and video files are in avi format.

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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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• python tracing a segmentation fault

  - by pygabriel

  Hi, I'm developing C extensions from python ad I obtain some segfaults (inevitable during the development...). I'm searching a way to display at which line of code the segfault happens (an idea is like tracing every single line of code), how I can do that?

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• Javascript HERE-doc or other large-quoting mechanism?

  - by Evan Carroll

  Is here a convenient way to quote a large block of HTML that has both single and double quotes in JavaScript? Is there anything like a HERE-doc <<EOF, a multi-quote character """, or custom delimiters q{}? Any creative or inventive solutions to this problem?

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• Workflow State not changing in asp.net

  - by shail

  hi i m trying to change the state for workflow from one state to another on button click its working fine with windows but not with web application and its instance id does not persist i have used SqlWorkflowPersistenceService also. what can b the solution for this. thanks

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• Explicitly accessing banked registers on ARM

  - by Demiurg

  According to the ARM manual, it should be possible to access the banked registers for a specific CPU mode as, for instance, "r13_svc". When I try to do this gcc yells at me with the following error: immediate expression requires a # prefix -- `mov r2,sp_svc' What's wrong?

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• Does UIScrollView have a special content view for making the scrolling possible?

  - by mystify

  I wonder if UIScrollView has got an "hidden" subview acting as an container for the content. If I scroll a scroll view, is that content view moved up/down in the scroll view? Or is the scrolling offset applied to the bounds of that UIScrollView instance? Or: Does UIScrollView use an additional view as container, or is all content added directly to the view? The documentation doesn't tell much about wether it has a content container or not.

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• How to create thumbnails from WMV video's

  - by Michel

  Hi, i want to display thumbnails for videos listed on my site, i want to fetch a single frame from a video (from a particular time) and display them as thumbnails. Is that possible using .Net ? (C# or VB)

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• Parallel Dev: Should developers work within the same branch?

  - by Zombies

  Should multiple developers work within the same branch, and update - modify - commit ? Or should each developer have his/her own each branch exclusively? And how would sharing branches impact an environment where you are doing routine maintenance as opposed to unmaintained code streams? Also, how would this work if you deploy each developers work as soon as it is done and passes testing (rapidly, as opposed to putting all of their work into a single release).

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• How can a C++ windows dll be merged into a C# application exe?

  - by Noah

  I have a Windows C# program that uses a C++ dll for data i/o. My goal is to deploy the application as a single EXE. What are the steps to create such an executable?

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• Restoring a utf8 encoded database to an iso 1 server - effect on strings

  - by Alan

  We are doing a migration of our Sybase database that has a utf8 encoding to a server with iso 1 encoding. We are just using char and Varchar for our strings. Will doing backup and restore not truncate any strings? I was thinking that Char and Varchar are just single byte characters.

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• Can I get Visual Studio to provide Intellisense and syntax coloring for Less Css ?

  - by driis

  I am experimenting with Less Css, and I am using Visual Studio 2010. It would be nice if the editor provided support for syntax highlighting and Intellisense for Less, for instance coloring and suggesting variables. What are my options to get that to work ? Do I need to write a plugin for it, or how would one go about adding this to VS ? Does anything exist for this already ?

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• Why does Option not extend the Iterable trait directly?

  - by oxbow_lakes

  Option is implicitly convertible to an Iterable - but why does it not just just implement Iterable directly: def iterator = new Iterator[A] { var end = !isDefined def next() = { val n = if (end) throw new NoSuchElementException() else get end = true n } def hasNext = !end } EDIT: In fact it's even weider than that because in 2.8 Option does declare an iterator method: def iterator: Iterator[A] = if (isEmpty) Iterator.empty else Iterator.single(this.get)

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• Floating point numbers in XML

  - by Jamie

  what is the best way to handle floating point numbers in XML? If I have, for instance: double a = 123.456; and I would like to keep it as <A> 123.456 </A> simply using ... myDoc.createTextNode(a.ToString()); is fine? Or should it be done with some Globalization stuff to make it region-independent?

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• The one true domain model - a fallacy?

  - by James L

  I've just finished working for a client which has burnt millions on a project to come up with the 'one true domain model' for their business. This was the project's sole deliverable. What are your thoughts on this? Is a single version of the truth realistic?

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