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filesystems - One-liner to recursively list directories in Ruby?

What is the fastest, most optimized, one-liner way to get an array of the directories (excluding files) in Ruby? How about including files? See Question&Answers more detail:os...

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python - NameError: name 'self' is not defined

Why such structure class A: def __init__(self, a): self.a = a def p(self, b=self.a): print b gives ... NameError: name 'self' is not defined? See Question&Answers more detail:os...

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postgresql - Postgis installation: type "geometry" does not exist

I am trying to create table with Postgis. I do it by this page. But when I import postgis.sql file, I get a ... anybody know how can I fix it? See Question&Answers more detail:os...

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arrays - PHP tree structure for categories and sub categories without looping a query

I'm trying to create a list of categories with any number of sub categories, where sub categories can also ... this tree style structure? Cheers See Question&Answers more detail:os...

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Error running android: Gradle project sync failed. Please fix your project and try again

Android Studio (1.2 RC0) keeps telling me Error running android: Gradle project sync failed. Please fix your project ... SO thread did not help. See Question&Answers more detail:os...

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android - Using VideoView for streaming or progressive-download video

I'm confused about how VideoView can be used to play video: from a local file, as progressive download ... that really answers this question. See Question&Answers more detail:os...

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unit testing - Xcode 4: Run tests from the command line (xcodebuild)?

I've created a brand new iOS project in Xcode 4, and included unit tests. The default app has 2 targets, ... my tests from the command line? See Question&Answers more detail:os...

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Taking screenshot on Emulator from Android Studio

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c++ - Extending python - to swig, not to swig or Cython

I found the bottleneck in my python code, played around with psycho etc. Then decided to write a c/c++ extension ... file or let swig do it. See Question&Answers more detail:os...

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Why does git stash pop say that it could not restore untracked files from stash entry?

I had a bunch of staged and unstaged changes and I wanted to quickly switch to another branch and then switch back. ... do I avoid it next time? See Question&Answers more detail:os...

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objective c - Save Photos to Custom Album in iPhones Photo Library

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character encoding - What is a vertical tab?

What was the original historical use of the vertical tab character (v in the C language, ASCII 11)? ... does something interesting and useful? See Question&Answers more detail:os...

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hash - Why are 5381 and 33 so important in the djb2 algorithm?

The djb2 algorithm has a hash function for strings. unsigned long hash = 5381; int c; while (c = *str++) ... Why are 5381 and 33 so important? See Question&Answers more detail:os...

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svn - Insert Subversion revision number in Xcode

I would like to insert the current Subversion revision number (as reported by svnversion) into my Xcode project. I ... , without too much magic. See Question&Answers more detail:os...

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python - 3-dimensional array in numpy

New at Python and Numpy, trying to create 3-dimensional arrays. My problem is that the order of the ... working with 3D-dimensional arrays? See Question&Answers more detail:os...

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html - Jquery If radio button is checked

Possible Duplicate: Check of specific radio button is checked I have these 2 radio buttons at the moment so that the user ... // ]]> </script> See Question&Answers more detail:os...

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iphone - How to remove an iOS app from the App Store

I want to remove my app, which is currently marked "Ready for sale", from the App Store. I could not find ... remove my app from the App Store? See Question&Answers more detail:os...

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c++ - Does making a struct volatile make all its members volatile?

If I have: struct whatever { int data; }; volatile whatever test; will test.data be volatile too? See Question&Answers more detail:os...

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python - Keras: How to save model and continue training?

I have a model that I've trained for 40 epochs. I kept checkpoints for each epochs, and I have also saved the ... ETA: 113s - loss: 4.3835 See Question&Answers more detail:os...

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android - How to create ripple effect in simple layout

How can I have a ripple effect in a simple linear/relative layout when touching the layout? I've tried ... clickable="true"> </RelativeLayout> See Question&Answers more detail:os...

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Can we overload the main method in Java?

Can we overload a main() method in Java? See Question&Answers more detail:os...

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python - Type annotations for *args and **kwargs

I'm trying out Python's type annotations with abstract base classes to write some interfaces. Is there a way to ... for *args and **kwargs? See Question&Answers more detail:os...

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java - javax.transaction.Transactional vs org.springframework.transaction.annotation.Transactional

I don't understand what is the actual difference between annotations javax.transaction.Transactional and org. ... Thanks for answering. See Question&Answers more detail:os...

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python - Pandas column values to columns?

I've seen a few variations on the theme of exploding a column/series into multiple columns of a Pandas ... convolution, and no success. See Question&Answers more detail:os...

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java - How to Schedule Notification in Android

I'm trying to set notification for a time in the future. I have the code for creating a notification but ... How can I schedule notifications? See Question&Answers more detail:os...

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windows - Emacs - Error when calling (server-start)

I am currently using GNU Emacs 23.0.93.1 in Windows Vista SP1. In my .emacs file I make a ... interactively(execute-extended-command nil nil) See Question&Answers more detail:os...

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iphone - How to pin the Public key of a certificate on iOS

While improving the security of an iOS application that we are developing, we found the need to PIN (the entire or ... But how do you do this? See Question&Answers more detail:os...

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javascript - Scrolling child div scrolls the window, how do I stop that?

I have a div, with a scroll bar, When it reaches the end, my page starts scrolling. Is there anyway I can stop this behavior ? See Question&Answers more detail:os...

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