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...t recently modified files, consider ls -lrt[RhA]. the -r reverses the sort order, leaving recently edited stuff at the bottom of the list...
– dmckee --- ex-moderator kitten
Sep 10 '09 at 12:59
...
Algorithm to compare two images
...).
http://en.wikipedia.org/wiki/RGB_color_space
http://upvector.com/index.php?section=tutorials&subsection=tutorials/colorspace
Another example involves something called the Hough Transform. This transform essentially decomposes an image into a set of lines. You can then take some of the '...
How do I perform the SQL Join equivalent in MongoDB?
...ttps://docs.mongodb.org/master/reference/operator/aggregation/lookup/#pipe._S_lookup
From the docs:
{
$lookup:
{
from: <collection to join>,
localField: <field from the input documents>,
foreignField: <field from the documents of the "from" collection>...
What is a serialVersionUID and why should I use it?
...I wouldn't expect it to say you need one - but it may be suggesting one in order to help you serialize exceptions correctly. If you're not going to serialize them, you really don't need the constant.
– Jon Skeet
Jun 15 '14 at 18:43
...
How do I print the elements of a C++ vector in GDB?
...td::vector<int> called myVector, do the following:
print *(myVector._M_impl._M_start)@myVector.size()
To print only the first N elements, do:
print *(myVector._M_impl._M_start)@N
Explanation
This is probably heavily dependent on your compiler version, but for GCC 4.1.2, the pointer to t...
How to check if a python module exists without importing it
...mport can find something in python2, using imp
import imp
try:
imp.find_module('eggs')
found = True
except ImportError:
found = False
To find dotted imports, you need to do more:
import imp
try:
spam_info = imp.find_module('spam')
spam = imp.load_module('spam', *spam_info)
i...
Is there a foreach loop in Go?
...
https://golang.org/ref/spec#For_range
A "for" statement with a "range" clause iterates through all entries
of an array, slice, string or map, or values received on a channel.
For each entry it assigns iteration values to corresponding iteration
v...
What is a singleton in C#?
...Prevent outside instantiation
}
private static readonly Singleton _singleton = new Singleton();
public static Singleton GetSingleton()
{
return _singleton;
}
}
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IntelliJ IDEA with Junit 4.7 “!!! JUnit version 3.8 or later expected:”
...xample.intellijgradletest.MainActivityTest"
– Heath Borders
Feb 4 '14 at 15:38
7
In IDEA 14.0.3 f...
Android: Clear Activity Stack
...ctivities one after the other through intents. Do I need to do anything in order to make sure the app doesn't crash with too many activities on the stack? Thanks!
– Ruchir Baronia
Dec 11 '15 at 14:14
...