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In log4j, does checking isDebugEnabled before logging improve performance?
...g statement you will already have the check in place.
2- You don't have to selectively include the statement on "complex" debug statements. All statements are included that way.
3- Calling log.debug executes the following before logging:
if(repository.isDisabled(Level.DEBUG_INT))
retur...
Avoiding SQL injection without parameters
...ion is wrong. You need to put apostrophes around the text:
string sql = "SELECT * FROM Users WHERE Name='" + SafeDBString(name) & "'";
SqlCommand getUser = new SqlCommand(sql, connection);
So that's one other thing parameters do for you: you don't need to worry about whether or not a value ...
FileSystemWatcher Changed event is raised twice
...<FileSystemEventArgs>(fileSystemWatcher, "Renamed") .Select(e => e.EventArgs) .Distinct(e => e.FullPath) .Subscribe(onNext);
– Kjellski
Oct 24 '14 at 15:55
...
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock'
...d_safe --skip-grant-tables &
Log into MySQL using root
mysql -uroot
Select the MySQL database to use
use mysql;
Reset the password
-- MySQL version < 5.7
update user set password=PASSWORD("mynewpassword") where User='root';
-- MySQL 5.7, mysql.user table "password" field -> "authent...
Localization of DisplayNameAttribute
...
var navigator = document.CreateNavigator();
var dataNav = navigator.Select("/root/data");
foreach (XPathNavigator item in dataNav)
{
var name = item.GetAttribute("name", String.Empty);
#>
public const String <#= name#> = "<#= name#>";
<# } #>
}
}
}
...
How to grep for two words existing on the same line? [duplicate]
...if performance really matters. If you run two commands, you should aim to select the less frequently occurring word in the first grep to minimize the amount of data processed by the second.
Diagnosis
The initial script is:
grep -c "word1" | grep -r "word2" logs
This is an odd command sequence....
How to display PDF file in HTML?
...oads/poster_bunny_bunnysize.jpg?x11217" title="Google" style="-webkit-user-select: none;background-position: 0px 0px, 10px 10px;background-size: 20px 20px;background-image:linear-gradient(45deg, #eee 25%, transparent 25%, transparent 75%, #eee 75%, #eee 100%),linear-gradient(45deg, #eee 25%, white 2...
How do you sort an array on multiple columns?
...lso sort the second attribute. Unless you loop it as many as the number of selected columns.. Am I right? e.g. [[A, 10], [J, 15], [A, 5], [J, 5]] => [[A, 10], [A, 5], [J, 15], [J, 5]]
– Bla...
Apr 23 '15 at 2:30
...
How to 'git pull' into a branch that is not the current one?
...origin/master into master but I cannot run git checkout to change the selected branch until after the pull is complete. Is there a way to do this?
...
How do I uninstall a Windows service if the files do not exist anymore?
...h elevated privileges. [Windows Key-X to bring up a menu with the option; select "Command Prompt (Admin)".]
2) Use the parenthetical name from the list in Services [for example, I used "sc delete gupdate" when, in Services, it read "Google Update (gupdate)"]
...