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When to use AtomicReference in Java?
...a use case for AtomicReference:
Consider this class that acts as a number range, and uses individual AtmomicInteger variables to maintain lower and upper number bounds.
public class NumberRange {
// INVARIANT: lower <= upper
private final AtomicInteger lower = new AtomicInteger(0);
...
Is there a way to detect if an image is blurry?
...ropy (Krotkov86)
FM = entropy(Image);
case 'HISR' % Histogram range (Firestone91)
FM = max(Image(:))-min(Image(:));
case 'LAPE' % Energy of laplacian (Subbarao92a)
LAP = fspecial('laplacian');
FM = imfilter(Image, LAP, 'replicate', 'conv');
FM = mea...
Javascript calculate the day of the year (1 - 366)
...ton><span></span>
Here is the version with correct range-validation.
function dayNo(y,m,d){
return --m>=0 && m<12 && d>0 && d<29+(
4*(y=y&3||!(y%25)&&y&15?0:1)+15662003>>m*2&3
...
How can I extract a good quality JPEG image from a video file with ffmpeg?
...rol quality
Use -qscale:v (or the alias -q:v) as an output option.
Normal range for JPEG is 2-31 with 31 being the worst quality.
The scale is linear with double the qscale being roughly half the bitrate.
Recommend trying values of 2-5.
You can use a value of 1 but you must add the -qmin 1 output o...
How can I calculate the difference between two dates?
...
Swift 4
Try this and see (date range with String):
// Start & End date string
let startingAt = "01/01/2018"
let endingAt = "08/03/2018"
// Sample date formatter
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "dd/MM/yyyy"
// start and...
Convert integer to binary in C#
...ing Enumerable and LINQ is:
int number = 25;
string binary = Enumerable.Range(0, (int) Math.Log(number, 2) + 1).Aggregate(string.Empty, (collected, bitshifts) => ((number >> bitshifts) & 1 )+ collected);
sha...
What algorithm can be used for packing rectangles of different sizes into the smallest rectangle pos
...between implementation complexity/time and optimality, but there is a wide range of algorithms to choose from.
Here's an extract of the algorithms:
First-Fit Decreasing Height (FFDH) algorithm
FFDH packs the next item R (in non-increasing height) on the first level where R fits. If no level can a...
Log all requests from the python-requests module
...
Strangely enough, I do not see the access_token in the OAuth request. Linkedin is complaining about unauthorized request, and I want to verify whether the library that I am using (rauth on top of requests) is sending that token...
Remove rows with all or some NAs (missing values) in data.frame
... if you want to check many columns, without typing each one, can you use a range final[,4:100]?
– Herman Toothrot
Oct 20 '16 at 10:56
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Google App Engine: Is it possible to do a Gql LIKE query?
...n the property values are sorted in an index, the values that fall in this range are all of the values that begin with the given prefix.
http://code.google.com/appengine/docs/python/datastore/queriesandindexes.html
maybe this could do the trick ;)
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