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Use JNI instead of JNA to call native code?
...some situations will perform worse than with JNI. For example when passing arrays, JNA will convert these from Java to native at the beginning of each function call and back at the end of the function call. With JNI, you can control yourself when a native "view" of the array is generated, potentiall...
ruby convert array into function arguments
Say I have an array. I wish to pass the array to a function. The function, however, expects two arguments. Is there a way to on the fly convert the array into 2 arguments?
For example:
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Javascript: How to loop through ALL DOM elements on a page?
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@Florian: just like you would access an array element -- all[i] would give you the current element.
– Andy E
Nov 23 '10 at 13:36
2
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(![]+[])[+[]]… Explain why this works
...rand of the Addition operator is ![] and it will produce false, because an array object—as any other Object instance—is truthy, and applying the Logical (!) NOT unary operator, it produces the value false, for example.
![]; // false, it was truthy
!{}; // false, it was truthy
!0; // true, it w...
How to deserialize a list using GSON or another JSON library in Java?
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Another way is to use an array as a type, e.g.:
Video[] videoArray = gson.fromJson(json, Video[].class);
This way you avoid all the hassle with the Type object, and if you really need a list you can always convert the array to a list, e.g.:
List&...
Is a Java string really immutable?
...was actually a bit surprising to me, as I thought it would share the value array (it did in earlier version of Java, before Java 7u6). However, looking at the source code of String, we can see that the value character array for a substring is actually copied (using Arrays.copyOfRange(..)). This is w...
Printing Java Collections Nicely (toString Doesn't Return Pretty Output)
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You could convert it to an array and then print that out with Arrays.toString(Object[]):
System.out.println(Arrays.toString(stack.toArray()));
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关于php的socket初探 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...t = 60;
private static $maxconns = 1024;
private static $connections = array();
function SelectSocketServer($port)
{
global $errno, $errstr;
if ($port < 1024) {
die("Port must be a number which bigger than 1024/n");
}
$socket = socket_create_listen($port);
if (!$socket) die("Li...
How to assign a Git SHA1's to a file without Git?
...Security.Cryptography.SHA1CryptoServiceProvider()).ComputeHash
|> Array.fold (fun acc e ->
let t = System.Convert.ToString(e, 16)
if t.Length = 1 then acc + "0" + t else acc + t)
""
/// Calculates the SHA1 like git
let calcGitSHA1 (text:string) =
le...
How to verify an XPath expression in Chrome Developers tool or Firefox's Firebug?
...ctor() or calls the $ function in the page, if it exists.
$$(): Returns an array of DOM nodes that match. This is like for document.querySelectorAll(), but returns an array instead of a NodeList.
$x(): Evaluates an XPath expression and returns an array of matching nodes.
Firefox (prior version ...