大约有 14,600 项符合查询结果（耗时：0.0445秒） [XML]
Create an index on a huge MySQL production table without table locking
... grep real;
done
) | cat -n &
PID=$!
sleep 0.05
echo "Index Update - START"
mysql -uroot website_development -e 'alter table users add index ddopsonfu (last_name, email, first_name, confirmation_token, current_sign_in_ip);'
echo "Index Update - FINISH"
sleep 0.05
kill $PID
time mysql -uroot we...
What is Dispatcher Servlet in Spring?
...
It actually scans the class path on start up for that annotation and makes a mapping of the "/pages/Home.html" to the Class + Method. If you had two methods that both had "/pages/Home.html" with no other restrictions in their annotation, that would be an error...
Relation between CommonJS, AMD and RequireJS?
...hich is designed to suit the browser environment (source). Apparently, AMD started as a spinoff of the CommonJS Transport format and evolved into its own module definition API. Hence the similarities between the two. The new feature in AMD is the define() function that allows the module to declare i...
String vs. StringBuilder
...nostics.Stopwatch time = new Stopwatch();
string test = string.Empty;
time.Start();
for (int i = 0; i < 100000; i++)
{
test += i;
}
time.Stop();
System.Console.WriteLine("Using String concatenation: " + time.ElapsedMilliseconds + " milliseconds");
Result:
Using String concatenation: 154...
How do I get an animated gif to work in WPF?
...e.NewValue == Visibility.Visible)
{
((GifImage)sender).StartAnimation();
}
else
{
((GifImage)sender).StopAnimation();
}
}
public static readonly DependencyProperty FrameIndexProperty =
DependencyProperty.Register("Frame...
Reload .profile in bash shell script (in unix)?
... update the environment with the contents of .profile file.
Ad 2) You can start any bash script either by calling
sh myscript.sh
or
. myscript.sh
In the first case this will create a subshell that will not affect the environment variables of your system and they will be visible only to the ...
Do browsers send “\r\n” or “\n” or does it depend on the browser?
...
This answer needs to be edited. It starts out citing the HTTP spec but that does not pertain to textareas.
– DuckMaestro
Jun 12 '11 at 20:59
...
How to get an array of specific “key” in multidimensional array without looping
...
PHP 5.5+
Starting PHP5.5+ you have array_column() available to you, which makes all of the below obsolete.
PHP 5.3+
$ids = array_map(function ($ar) {return $ar['id'];}, $users);
Solution by @phihag will work flawlessly in PHP ...
Reload the path in PowerShell
... the PATH or I modify it in any way outside of PowerShell then I need to restart PowerShell for it to see the updated PATH variable.
...
How to get a complete list of ticker symbols from Yahoo Finance? [closed]
...finding the .js file where they just happen to store the list of companies starting with the given letter as a js array literal. you can also get nice tidy csv files from nasdaq.com here:
http://www.nasdaq.com/screening/companies-by-name.aspx?letter=0&exchange=nasdaq&render=download (replac...