大约有 19,000 项符合查询结果（耗时：0.0469秒） [XML]
How to determine if a list of polygon points are in clockwise order?
...formula above? It ends with "xn*y1 - x1*yn"; when I believe it should be "x_n y_{n+1} - y_n x_{n-1}" (in LaTeX, at least). On the other hand, it's been ten years since I took any linear algebra classes.
– Michael Eric Oberlin
May 25 '15 at 20:25
...
An async/await example that causes a deadlock
...u:
So this is what happens, starting with the top-level method (Button1_Click for UI / MyController.Get for ASP.NET):
The top-level method calls GetJsonAsync (within the UI/ASP.NET context).
GetJsonAsync starts the REST request by calling HttpClient.GetStringAsync (still within the con...
How to get year, month, day, hours, minutes, seconds and milliseconds of the current moment in Java?
...ute();
int second = now.getSecond();
int millis = now.get(ChronoField.MILLI_OF_SECOND); // Note: no direct getter available.
System.out.printf("%d-%02d-%02d %02d:%02d:%02d.%03d", year, month, day, hour, minute, second, millis);
Or, when you're not on Java 8 yet, make use of java.util.Calendar.
Cal...
Does “git fetch --tags” include “git fetch”?
... -- gitster -- in commit 9fcd144, 26 Oct 2016)
fetch: use "quick" has_sha1_file for tag following
When fetching from a remote that has many tags that are irrelevant to branches we are following, we used to waste way too many cycles when checking if the object pointed at by a tag (that we ...
When is TCP option SO_LINGER (0) required?
...
The typical reason to set a SO_LINGER timeout of zero is to avoid large numbers of connections sitting in the TIME_WAIT state, tying up all the available resources on a server.
When a TCP connection is closed cleanly, the end that initiated the close ("a...
How to concatenate and minify multiple CSS and JavaScript files with Grunt.js (0.3.x)
...compressor:
module.exports = function(grunt) {
var exec = require('child_process').exec;
grunt.registerTask('cssmin', function() {
var cmd = 'java -jar -Xss2048k '
+ __dirname + '/../yuicompressor-2.4.7.jar --type css '
+ grunt.template.process('/css/style.css') + ' -o '
...
What is JSONP, and why was it created?
...cript';
script.src = 'http://www.someWebApiServer.com/some-data?callback=my_callback';
Notice the my_callback function over there? So - when JSONP server receives your request and finds callback parameter - instead of returning plain js array it'll return this:
my_callback({['some string 1', 'som...
nginx upload client_max_body_size issue
...maximum size of files I want uploaded.
To do that, I set the nginx client_max_body_size to 1m (1MB) and expect a HTTP 413 (Request Entity Too Large) status in response when that rule breaks.
...
phpunit mock method multiple calls with different arguments
...on Query($sSql) {
return "";
}
}
class fooTest extends PHPUnit_Framework_TestCase {
public function testMock() {
$mock = $this->getMock('DB', array('Query'));
$mock
->expects($this->exactly(2))
->method('Query')
-&g...
Java - No enclosing instance of type Foo is accessible
...nt where it is declared.
Let`s try to see the above concepts practically_
public class MyInnerClass {
public static void main(String args[]) throws InterruptedException {
// direct access to inner class method
new MyInnerClass.StaticInnerClass().staticInnerClassMethod();
// static ...