大约有 7,540 项符合查询结果（耗时：0.0320秒） [XML]
What is an “unwrapped value” in Swift?
...you write much safer code. E.g. imagine all the null pointer exceptions in Java crashing a program because somebody forgot to check for null. Or weird behaviour on Objective-C because you forgot to check for nil. With Optional type you can't forget to deal with nil. The compiler forces you to deal w...
What is the Scala identifier “implicitly”?
...1) //
res23: AnyRef{def min(i: Int): Int} = 1
scala> .getClass
res24: java.lang.Class[_] = class scala.runtime.RichInt
Implicit Views can also be triggered when an expression does not conform to the Expected Type, as below:
scala> 1: scala.runtime.RichInt
res25: scala.runtime.RichInt = 1
...
How does C compute sin() and other math functions?
...will generate code that calls these assembly instructions. (By contrast, a Java compiler will not. Java evaluates trig functions in software rather than hardware, and so it runs much slower.)
Chips do not use Taylor series to compute trig functions, at least not entirely. First of all they use CO...
Performance difference for control structures 'for' and 'foreach' in C#
...
Note: this answer applies more to Java than it does to C#, since C# doesn't have an indexer on LinkedLists, but I think the general point still holds.
If the list you're working with happens to be a LinkedList, the performance of the indexer-code (array-styl...
How to implement Rate It feature in Android App
...ies {
implementation 'com.vorlonsoft:androidrate:1.0.8'
}
MainActivity.java:
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
AppRate.with(this)
.setStoreType(StoreType.GOOGLEPLAY) //default i...
How many socket connections can a web server handle?
...tps://github.com/valyala/fasthttp
The leading languages are Rust, Go, C++, Java, C, and even C# ranks at 11 (6.9M per second). Scala and Clojure rank further down. Python ranks at 29th at 2.7M per second.
At the bottom of the list, I note laravel and cakephp, rails, aspnet-mono-ngx, symfony, zend. A...
How to make an Android Spinner with initial text “Select One”?
...nnerAdapter newProxy(SpinnerAdapter obj) {
return (SpinnerAdapter) java.lang.reflect.Proxy.newProxyInstance(
obj.getClass().getClassLoader(),
new Class[]{SpinnerAdapter.class},
new SpinnerAdapterProxy(obj));
}
/**
* Intercepts g...
What is the motivation for bringing Symbols to ES6?
...Ruby is needless; we could easily use plain strings instead, like we do in JavaScript. And now they decide to complicate things in JS with that.
...
When is a language considered a scripting language? [closed]
... own apps so much as getting an existing app to act the way you want, e.g. JavaScript for browsers, VBA for MS Office.
share
answered Sep 19 '08 at 10:56
...
What is the difference between JDK dynamic proxy and CGLib?
...interface, which is then also implemented by the proxy class).
CGLIB (and javassist) can create a proxy by subclassing. In this scenario the proxy becomes a subclass of the target class. No need for interfaces.
So Java Dynamic proxies can proxy: public class Foo implements iFoo where CGLIB can pro...