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HTML5 Email Validation
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The input type=email page of the www.w3.org site notes that an email address is any string which matches the following regular expression:
/^[a-zA-Z0-9.!#$%&’*+/=?^_`{|}~-]+@[a-zA-Z0-9-]+(?:\.[a-zA-Z0-9-]+)*$/
Use the required attribute and a patter...
Queue.Queue vs. collections.deque
...r information there is a Python ticket referenced for deque thread-safety (https://bugs.python.org/issue15329).
Title "clarify which deque methods are thread-safe"
Bottom line here: https://bugs.python.org/issue15329#msg199368
The deque's append(), appendleft(), pop(), popleft(), and len(d)
o...
How do I install from a local cache with pip?
...ewer Pip versions now cache downloads by default. See this documentation:
https://pip.pypa.io/en/stable/reference/pip_install/#caching
For older Pip versions:
Create a configuration file named ~/.pip/pip.conf, and add the following contents:
[global]
download_cache = ~/.cache/pip
On OS X, a be...
Android List View Drag and Drop sort
... but I'm happy with it so far. My code and several demos can be found at
https://github.com/bauerca/drag-sort-listview
Its use is very similar to the TouchInterceptor (on which the code is based), although significant implementation changes have been made.
DragSortListView has smooth and predic...
How to create PDF files in Python [closed]
... help. This article examines one of those for Python.
Read more at http://www.devshed.com/c/a/Python/Python-for-PDF-Generation/#whoCFCPh3TAks368.99
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How do I get the logfile from an Android device?
...ring variable.
SendLog is an open source App which does just this: http://www.l6n.org/android/sendlog.shtml
The key is to run logcat on the device in the embedded OS. It's not as hard as it sounds, just check out the open source app in the link.
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How can I create a directly-executable cross-platform GUI app using Python?
...t project of mine when py2exe would not. I found it easier to use.
http://www.pyinstaller.org/
Pyinstaller is based on Gordon McMillan's Python Installer. Which is no longer available.
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Shell one liner to prepend to a file
...'0a
your text here
.
w' | ed some_file
ed is the Standard Editor! http://www.gnu.org/fun/jokes/ed.msg.html
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Coalesce function for PHP?
... ?: 'B';
// B
echo false ?: 'B';
// B
echo null ?: 'B';
Source: http://www.php.net/ChangeLog-5.php#5.3.0
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How do I install cygwin components from the command line?
...low the above
steps and then use Cygwin Bash for the following steps
wget https://raw.githubusercontent.com/transcode-open/apt-cyg/master/apt-cyg
chmod +x apt-cyg
mv apt-cyg /usr/local/bin
Now that apt-cyg is installed. Here are few examples of
installing some packages
apt-cyg install nano
apt-c...