大约有 20,000 项符合查询结果(耗时:0.0471秒) [XML]
Access-Control-Allow-Origin Multiple Origin Domains?
... to allow multiple cross-domains using the Access-Control-Allow-Origin header?
31 Answers
...
What do Clustered and Non clustered index actually mean?
...ease the time it takes to write new records.
It is generally faster to read from a clustered index if you want to get back all the columns. You do not have to go first to the index and then to the table.
Writing to a table with a clustered index can be slower, if there is a need to rearrange the ...
Performance of foreach, array_map with lambda and array_map with static function
....3.10 + XDebug.
UPDATE 2015-01-22 compare with mcfedr's answer below for additional results without XDebug and a more recent PHP version.
function lap($func) {
$t0 = microtime(1);
$numbers = range(0, 1000000);
$ret = $func($numbers);
$t1 = microtime(1);
return array($t1 - $t0, $ret);
}...
What are some good resources for learning about Artificial Neural Networks? [closed]
...http://www.codeproject.com/KB/recipes/neural_dot_net.aspx
you can start reading here:
http://web.archive.org/web/20071025010456/http://www.geocities.com/CapeCanaveral/Lab/3765/neural.html
I for my part have visited a course about it and worked through some literature.
...
How do you read CSS rule values with JavaScript?
...
Adapted from here, building on scunliffe's answer:
function getStyle(className) {
var cssText = "";
var classes = document.styleSheets[0].rules || document.styleSheets[0].cssRules;
for (var x = 0; x < classes....
PHP Sort Array By SubArray Value
...tionNumber");
In PHP ≥5.3, you should use an anonymous function instead:
usort($array, function ($a, $b) {
return $a['optionNumber'] - $b['optionNumber'];
});
Note that both code above assume $a['optionNumber'] is an integer. Use @St. John Johnson's solution if they are strings.
In P...
What is the difference between Views and Materialized Views in Oracle?
...
WAF
79522 gold badges1313 silver badges3030 bronze badges
answered Sep 18 '08 at 15:25
dacracotdacracot
...
How do you convert epoch time in C#?
...mber of seconds since midnight (UTC) on 1st January 1970.
private static readonly DateTime epoch = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
public static DateTime FromUnixTime(long unixTime)
{
return epoch.AddSeconds(unixTime);
}
UPDATE 2020
You can do this with DateTimeOffset
Date...
Google Play on Android 4.0 emulator
...
Download Google apps (GoogleLoginService.apk , GoogleServicesFramework.apk , Phonesky.apk) from here.
Start your emulator:
emulator -avd VM_NAME_HERE -partition-size 500 -no-audio -no-boot-anim
Then use the following commands:
# ...
Add new methods to a resource controller in Laravel
I want to know if it is possible to add new methods to a resource controller in Laravel and how you do it.
9 Answers
...