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What do Clustered and Non clustered index actually mean?
...tered index.
With a non clustered index there is a second list that has pointers to the physical rows. You can have many non clustered indices, although each new index will increase the time it takes to write new records.
It is generally faster to read from a clustered index if you want to get ba...
How to set my default shell on Mac?
...
dbright@PowerMac:~$ chsh -s /Users/dbright/sys/bin/bash Changing shell for dbright. Password for dbright: chsh: /Users/dbright/sys/bin/bash: non-standard shell dbright@PowerMac:~$ ls -l /etc/shells -rw-r--r-- 1 root wheel 179 Sep 23 2007 /etc/shells
...
Deleting an element from an array in PHP
...t to reindex the keys you can use \array_values() after unset() which will convert all keys to numerical enumerated keys starting from 0.
Code
<?php
$array = [0 => "a", 1 => "b", 2 => "c"];
unset($array[1]);
//↑ Key which you want to delete
?>
Output
[
...
How to report an error from a SQL Server user-defined function
...lp information:
Msg 245, Level 16, State 1, Line 1
Conversion failed when converting the varchar value 'Error happened here.' to data type int.
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What is the difference between conversion specifiers %i and %d in formatted IO functions (*printf /
...gs are:
and includes the following bullet:
d,i The int argument is converted to signed decimal in the style
[−]dddd. The precision specifies the minimum number of digits to
appear; if the value being converted can be represented in fewer
digits, it is expanded with ...
Load a WPF BitmapImage from a System.Drawing.Bitmap
....NET 3.0+) that do the conversion. :)
/// <summary>
/// Converts a <see cref="System.Drawing.Image"/> into a WPF <see cref="BitmapSource"/>.
/// </summary>
/// <param name="source">The source image.</param>
/// <returns>A BitmapSourc...
How to remove all leading zeroes in a string
... @NabeelKhan That would not answer the question, which does not ask to convert the string to an integer. See the comments on Svisstack's answer for why this is not such a great solution.
– lonesomeday
Apr 18 '16 at 8:15
...
How can I check the syntax of Python script without executing it?
...
import sys
filename = sys.argv[1]
source = open(filename, 'r').read() + '\n'
compile(source, filename, 'exec')
Save this as checker.py and run python checker.py yourpyfile.py.
...
Extreme wait-time when taking a SQL Server database offline
... (a rare example: asynchronous statistic update)
To find connections, use sys.sysprocesses
USE master
SELECT * FROM sys.sysprocesses WHERE dbid = DB_ID('MyDB')
To force disconnections, use ROLLBACK IMMEDIATE
USE master
ALTER DATABASE MyDB SET SINGLE_USER WITH ROLLBACK IMMEDIATE
...
ASP.NET Identity's default Password Hasher - How does it work and is it secure?
...t, 1, 0x10);
Buffer.BlockCopy(buffer2, 0, dst, 0x11, 0x20);
return Convert.ToBase64String(dst);
}
Verifying:
public static bool VerifyHashedPassword(string hashedPassword, string password)
{
byte[] buffer4;
if (hashedPassword == null)
{
return false;
}
if (pass...