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When do I need to use AtomicBoolean in Java?
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Here is the notes (from Brian Goetz book) I made, that might be of help to you
AtomicXXX classes
provide Non-blocking Compare-And-Swap implementation
Takes advantage of the support provide
by hardware (the CMPXCHG instruction
on Intel) When ...
Extracting text OpenCV
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You can detect text by finding close edge elements (inspired from a LPD):
#include "opencv2/opencv.hpp"
std::vector<cv::Rect> detectLetters(cv::Mat img)
{
std::vector<cv::Rect> boundRect;
cv::Mat img_gray, img_sobel, img_threshold, element;
cvtColor(img, img_g...
Which is preferred: Nullable.HasValue or Nullable != null?
...t itself that can equal null.
Likewise, we would get a compile time error from:
int? val = new int?();
val.Value = null;
not to mention that val.Value is a read-only property anyway, meaning we can't even use something like:
val.Value = 3;
but again, polymorphous overloaded implicit conversio...
After installation of Gulp: “no command 'gulp' found”
... receive a no command 'gulp' found error when running the gulp command from the same directory it was installed into.
9...
Cross-Domain Cookies
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Yes, it is absolutely possible to get the cookie from domain1.com by domain2.com. I had the same problem for a social plugin of my social network, and after a day of research I found the solution.
First, on the server side you need to have the following headers:
header("A...
Convert a Unix timestamp to time in JavaScript
..., not seconds.
var date = new Date(unix_timestamp * 1000);
// Hours part from the timestamp
var hours = date.getHours();
// Minutes part from the timestamp
var minutes = "0" + date.getMinutes();
// Seconds part from the timestamp
var seconds = "0" + date.getSeconds();
// Will display time ...
Python Regex - How to Get Positions and Values of Matches
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@hi-angel yep, see my answer below from last year that does just that
– StevenWernerCS
Jul 16 at 1:03
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Bootstrap modal appearing under background
I have used the code for my modal straight from the Bootstrap example, and have included only the bootstrap.js (and not bootstrap-modal.js). However, my modal is appearing underneath the grey fade (backdrop) and is non editable.
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Pretty-Print JSON in Java
...d code to parse a string into a JsonElement, usually you already have that from previous work you do with the JSON data. But I wanted to include it here to make the usage clearer.
– Ray Hulha
Feb 20 '14 at 15:01
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iOS: How to get a proper Month name from a number?
...ols] objectAtIndex:(monthNumber-1)];
Note that you'll need to subtract 1 from your 1..12 monthNumber since monthSymbols is zero-based.
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