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Get operating system info
...globals, merges both lists and detects the architecture (x32/x64)
/**
* @param $user_agent null
* @return string
*/
function getOS($user_agent = null)
{
if(!isset($user_agent) && isset($_SERVER['HTTP_USER_AGENT'])) {
$user_agent = $_SERVER['HTTP_USER_AGENT'];
}
// ht...
Why is TypedReference behind the scenes? It's so fast and safe… almost magical!
...1, ref T2 p2); a collection of type T could provide a method ActOnItem<TParam>(int index, ActByRef<T,TParam> proc, ref TParam param), but the JITter would have to create a different version of the method for every value type TParam. Using a typed reference would allow one JITted version...
App Inventor 2 低功耗蓝牙 BlueToothLE 拓展 · App Inventor 2 中文网
...ice 接口才能使此方法正常工作。
参数:
param (component) —
需要特定服务的组件块。
ScanForService – 通过服务UUID扫描 广播特定BLE服务 的设备。
参数:
serviceUuid (text) —
目标BLE设备的广...
Optimise PostgreSQL for fast testing
...ce dramatically just by creating an appropriate index or tweaking the cost parameters.
AFAIK there's no way to set an entire database or cluster as UNLOGGED. It'd be interesting to be able to do so. Consider asking on the PostgreSQL mailing list.
Host OS tuning
There's some tuning you can do at t...
Pointers vs. values in parameters and return values
...compile time. They sometimes accept a pointer to a slice in an interface{} parameter.
Maps, channels, strings, and function and interface values, like slices, are internally references or structures that contain references already, so if you're just trying to avoid getting the underlying data copi...
Java 8 Iterable.forEach() vs foreach loop
...ic static class TestObject {
public int result;
}
public @Param({"100", "10000"}) int elementCount;
ArrayList<TestObject> list;
TestObject[] array;
@BeforeExperiment
public void setup(){
list = new ArrayList<>(elementCount);
for (int i =...
What does 'super' do in Python?
...use. my understanding is that, d = D() called the Class D(B,C) with 2 self-parameters, since super() is initiated first then B is called together with it's attributes then D is not printed before C is because Class D(B,C) contains 2 self-parameters so it must execute the second one which is Class C(...
How to convert number to words in java
...\\s+", "").replaceAll("\\b\\s{2,}\\b", " ");
}
/**
* testing
* @param args
*/
public static void main(String[] args) {
System.out.println("*** " + EnglishNumberToWords.convert(0));
System.out.println("*** " + EnglishNumberToWords.convert(1));
System.out.println("*** " + E...
How does JavaScript .prototype work?
...ns like:
Person.call(person, "George");
or
//apply is more useful when params count is not fixed
Person.apply(person, ["George"]);
getName.call(person);
getName.apply(person);
these 3 methods are the important initial steps to figure out the .prototype functionality.
2- How does the new...
Defeating a Poker Bot
...g images and sending keyboard/mouse events.
– André Paramés
Jan 19 '11 at 19:39
...