大约有 14,600 项符合查询结果（耗时：0.0250秒） [XML]
Removing array item by value
...$arr);
$arr2 = $arr;
$arr3 = $arr;
/**
* Method 1 - array_search()
*/
$start = microtime(true);
while(($key = array_search(123456,$arr)) !== false) {
unset($arr[$key]);
}
echo count($arr). ' left, in '.(microtime(true) - $start).' seconds<BR>';
/**
* Method 2 - basic loop
*/
$start...
What are some good resources for learning about Artificial Neural Networks? [closed]
...y interested in Artificial Neural Networks, but I'm looking for a place to start.
16 Answers
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Find out time it took for a python script to complete execution
...
from datetime import datetime
startTime = datetime.now()
#do something
#Python 2:
print datetime.now() - startTime
#Python 3:
print(datetime.now() - startTime)
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How to run Node.js as a background process and never die?
..._running &, but understanding screen once you never come back again.
Start your screen session at first:
user@host:~$ screen
Run anything you want:
wget http://mirror.yandex.ru/centos/4.6/isos/i386/CentOS-4.6-i386-binDVD.iso
Press ctrl+A and then d. Done. Your session keeps going on in b...
Create Windows service from executable
...uick way to, given an executable file, create a Windows service that, when started, launches it?
8 Answers
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HttpListener Access Denied
...mode? if yes how? If not how can I make the app change to admin mode after start running?
You can't, it has to start with elevated privileges. You can restart it with the runas verb, which will prompt the user to switch to admin mode
static void RestartAsAdmin()
{
var startInfo = new ProcessS...
Any reason not to start using the HTML 5 doctype? [closed]
...pported features. I'm not saying you couldn't play around with it, but why start building sites with a doctype that offers no benefits and could be supplemented by XHTML5.
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Android Fragments. Retaining an AsyncTask during screen rotation or configuration change
...rseArray under the fragment's identifier, and then in your onCreate() or onStart() look to see if you have an AsyncTask in the sparse array available.
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How to reduce iOS AVPlayer start delay
...
For iOS 10.x and greater to reduce AVPlayer start delay I set:
avplayer.automaticallyWaitsToMinimizeStalling = false;
and that seemed to fix it for me. This could have other consequences, but I haven't hit those yet.
I got the idea for it from:
https://stackoverflow...
Android TextWatcher.afterTextChanged vs TextWatcher.onTextChanged
...are called in the following order:
beforeTextChanged(CharSequence s, int start, int count, int after).
This means that the characters are about to be replaced with some new text. The text is uneditable.
Use: when you need to take a look at the old text which is about to change.
onTextChanged(CharS...