大约有 40,000 项符合查询结果（耗时：0.0562秒） [XML]
PHP 5: const vs static
...e = new Pirate();
$pirate::getType();
or:
Pirate::getType();
Output:
string(6) "person"
string(6) "pirate"
string(6) "person"
string(6) "pirate"
In other words self:: refers to the static property and constant from the same scope where it is being called (in this case the Person supercl...
What is the difference between single and double quotes in SQL?
...
Single quotes are used to indicate the beginning and end of a string in SQL. Double quotes generally aren't used in SQL, but that can vary from database to database.
Stick to using single quotes.
That's the primary use anyway. You can use single quotes for a column alias — where yo...
Entity Framework Timeouts
...known bug with specifying default command timeout within the EF connection string.
http://bugs.mysql.com/bug.php?id=56806
Remove the value from the connection string and set it on the data context object itself. This will work if you remove the conflicting value from the connection string.
Entity...
Beyond Stack Sampling: C++ Profilers
...yers deep, in the process of trying to extract internationalized character strings from DLL resources. If the actual strings are examined, it can easily turn out that the strings don't really need to be internationalized, like they are strings the user never actually sees.
During normal usage, some ...
How to convert an IPv4 address into a integer in C#?
...pping:
using System;
using System.Net;
class App
{
static long ToInt(string addr)
{
// careful of sign extension: convert to uint first;
// unsigned NetworkToHostOrder ought to be provided.
return (long) (uint) IPAddress.NetworkToHostOrder(
(int) IPAddr...
How can we print line numbers to the log in java
...g {
public final static boolean DEBUG = true;
public static void log(String message) {
if (DEBUG) {
String fullClassName = Thread.currentThread().getStackTrace()[2].getClassName();
String className = fullClassName.substring(fullClassName.lastIndexOf(".") + 1);
String methodName =...
Easiest way to compare arrays in C#
...in array or tuples via using StructuralComparisons type:
object[] a1 = { "string", 123, true };
object[] a2 = { "string", 123, true };
Console.WriteLine (a1 == a2); // False (because arrays is reference types)
Console.WriteLine (a1.Equals (a2)); // False (because arrays is reference types)...
Is there a way to get the XPath in Google Chrome?
...
He was asking "how to get an xpath string for an element?", rather than "how do i select by xpath?" wasn't he?
– Max Williams
Jan 3 '12 at 11:05
...
How to make a edittext box in a dialog
... Editable YouEditTextValue = edittext.getText();
//OR
String YouEditTextValue = edittext.getText().toString();
}
});
alert.setNegativeButton("No Option", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
// wh...
How to timeout a thread
...current.TimeoutException;
public class Test {
public static void main(String[] args) throws Exception {
ExecutorService executor = Executors.newSingleThreadExecutor();
Future<String> future = executor.submit(new Task());
try {
System.out.println("Start...