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What is an example of the simplest possible Socket.io example?
...),
// NEVER use a Sync function except at start-up!
index = fs.readFileSync(__dirname + '/index.html');
// Send index.html to all requests
var app = http.createServer(function(req, res) {
res.writeHead(200, {'Content-Type': 'text/html'});
res.end(index);
});
// Socket.io server lis...
Exit Shell Script Based on Process Exit Code
... can be found in the $? variable so you would have something like:
ls -al file.ext
rc=$?; if [[ $rc != 0 ]]; then exit $rc; fi
You need to be careful of piped commands since the $? only gives you the return code of the last element in the pipe so, in the code:
ls -al file.ext | sed 's/^/xx: /"
...
What are named pipes?
... of the thing on the other end etc).
Unix named pipes appear as a special file in the filesystem and can be accessed with normal file IO commands including the shell. Windows ones don't, and need to be opened with a special system call (after which they behave mostly like a normal win32 handle).
E...
Creating a UICollectionView programmatically
...
Header file:--
@interface ViewController : UIViewController<UICollectionViewDataSource,UICollectionViewDelegateFlowLayout>
{
UICollectionView *_collectionView;
}
Implementation File:--
- (void)viewDidLoad
{
[super...
Can you run GUI applications in a Docker container?
...: docker pull creack/firefox-vnc
The image has been made with this Dockerfile:
# Firefox over VNC
#
# VERSION 0.1
# DOCKER-VERSION 0.2
FROM ubuntu:12.04
# Make sure the package repository is up to date
RUN echo "deb http://archive.ubuntu.com/ubuntu precise main univer...
What is an application binary interface (ABI)?
...your library. Your ABI defines how your code is stored inside the library file, so that any program using your library can locate the desired function and execute it.
ABIs are important when it comes to applications that use external libraries. Libraries are full of code and other resources, but ...
HTTPS and SSL3_GET_SERVER_CERTIFICATE:certificate verify failed, CA is OK
...rt.pem is in same directory then curl_setopt($ch, CURLOPT_CAINFO, dirname(FILE) . '/cacert.pem'); will work
– mujaffars
Aug 11 '14 at 11:43
...
Multiple constructors in python? [duplicate]
...a:
class C(object):
def __init__(self, fd):
# Assume fd is a file-like object.
self.fd = fd
@classmethod
def fromfilename(cls, name):
return cls(open(name, 'rb'))
# Now you can do:
c = C(fd)
# or:
c = C.fromfilename('a filename')
Notice all those classmethod...
Looping a video with AVFoundation AVPlayer?
...om/videos/play/wwdc2016/503/
Even using this code, I had a hiccup until I filed a bug report with Apple and got this response:
The movie file having movie duration longer than audio/video tracks is
the problem. FigPlayer_File is disabling gapless transition because
audio track edit is short...
How to add Google Analytics Tracking ID to GitHub Pages
...rUserName/YourRepository/tree/gh-pages )
Then edit index.html from listed files
Now in within HEAD tag of index.html - paste your Google Analytics Tracking ID Script ( if have already signed up for Google analytics then you can browse it under admin and then tracking info tab )
...