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Look up all descendants of a class in Ruby
...ingleton_class instead of Class make it much faster (see source at apidock.com/rails/Class/descendants)
– brauliobo
May 9 '15 at 0:41
21
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Get/pick an image from Android's built-in Gallery app programmatically
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This is a complete solution. I've just updated this example code with the information provided in the answer below by @mad. Also check the solution below from @Khobaib explaining how to deal with picasa images.
Update
I've just revie...
I have 2 dates in PHP, how can I run a foreach loop to go through all of those days?
I'm starting with a date 2010-05-01 and ending with 2010-05-10 . How can I iterate through all of those dates in PHP?
1...
How can I detect if a file is binary (non-text) in python?
...port mimetypes
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mime = mimetypes.guess_type(file)
It's fairly easy to compile a list of binary mime types. For example Apache distributes with a mime.types file that you could parse into a set of lists, binary and text and then check to see if the mime is in your text or binary list.
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How to read a text file reversely with iterator in C#
... second bit set are the start of a character
// See http://www.cl.cam.ac.uk/~mgk25/unicode.html
characterStartDetector = (pos, data) => (data & 0x80) == 0 || (data & 0x40) != 0;
}
else
{
throw new Argument...
Difference between “include” and “require” in php
... need to install an errors-to-exceptions handler, as described here http://www.php.net/manual/en/class.errorexception.php
function exception_error_handler($errno, $errstr, $errfile, $errline ) {
throw new ErrorException($errstr, 0, $errno, $errfile, $errline);
}
set_error_handler("except...
force Maven to copy dependencies into target/lib
...:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>groupId</gr...
How to change the docker image installation directory?
... custom path, in /etc/docker/daemon.json
(according to https://docs.docker.com/engine/reference/commandline/dockerd/#daemon-configuration-file).
With older versions, you can change Docker's storage base directory (where container and images go) using the -goption when starting the Docker daemon. (c...
The first day of the current month in php using date_modify as DateTime object
...('jS, F Y');
// First day of a specific month
$d = new DateTime('2010-01-19');
$d->modify('first day of this month');
echo $d->format('jS, F Y');
// alternatively...
echo date_create('2010-01-19')
->modify('first day of this month')
->format('jS, F Y...
Explanation of …
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Those script tags are a common way to implement templating functionality (like in PHP) but on the client side.
By setting the type to "text/template", it's not a script that the browser can understand, and so the browser will simply ignore it. This...