大约有 16,000 项符合查询结果（耗时：0.0247秒） [XML]
GROUP BY with MAX(DATE) [duplicate]
...
VERY slow! The currency converter table with fields date,from,to,rate. 203161 rows total. Joe Meyer method gives 362 rows in set (31,29 sec). Oliver Hanappi method gives 362 rows in set (0,04 sec)
– TheRoSS
Dec...
What's default HTML/CSS link color?
... a screenshot, and visiting a website like html-color-codes.info that will convert a screenshot to a color code.
share
|
improve this answer
|
follow
|
...
How do I connect to a specific Wi-Fi network in Android programmatically?
...r wifiManager = (WifiManager)getSystemService(WIFI_SERVICE);
//remember id
int netId = wifiManager.addNetwork(wifiConfig);
wifiManager.disconnect();
wifiManager.enableNetwork(netId, true);
wifiManager.reconnect();
share
...
Check list of words in another string [duplicate]
...bstantial length, and you need to do this test many times, it may be worth converting the list to a set and using set intersection to test (with the added benefit that you wil get the actual words that are in both lists):
>>> long_word_list = 'some one long two phrase three about above alo...
How to put a new line into a wpf TextBlock control?
...de the string had double backslashes.
\\r\\n
To fix this I wrote a ValueConverter to strip the extra backslash.
public class XmlStringConverter : IValueConverter
{
public object Convert(
object value,
Type targetType,
object parameter,
CultureInfo culture)
...
What is the difference between substr and substring?
... //*** negative second argument:
"string".substring(2,-4); // "st" (converts negative numbers to 0, then swaps first and second position)
"string".substr(2,-4); // ""
"string".slice(2,-4); // ""
//*** negative first argument:
"string".substring(-3); // "string" ...
ASP.NET MVC - Set custom IIdentity or IPrincipal
...eans I don't have to implement both IIdentity and IPrincipal.
Create the interface
interface ICustomPrincipal : IPrincipal
{
int Id { get; set; }
string FirstName { get; set; }
string LastName { get; set; }
}
CustomPrincipal
public class CustomPrincipal : ICustomPrincipal
{
publ...
How do you find the last day of the month? [duplicate]
... @JonSkeet That's great thank you, I've taken that method's internals to use as my own extension method until NodaTime 2.0 comes out. In my case, I also want to find the "last possible instant of a specified date", does this method sound reasonable? anyLocalDate.PlusDays(1).AtMidnight...
Javascript : Send JSON Object with Ajax?
...pplication/x-www-form-urlencoded too if I use stringify, then what's the point to use application/json? :)
– Adam Halasz
Jun 20 '11 at 23:31
...
关于php的socket初探 - PHP - 清泛IT论坛，有思想、有深度
... {
// 接受客户端连接
$newconn = socket_accept($socket);
$i = (int) $newconn;
$reject = '';
if (count(self::$connections) >= self::$maxconns) {
$reject = "Server full, Try again later./n";
}
// 将当前客户端连接放入 socket_select 选择
self::$connection...