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How to test an SQL Update statement before running it?
... @rickozoe below:
In general these lines will not be executed as once. In PHP f.e. you would write something like that (perhaps a little bit cleaner, but wanted to answer quick ;-) ):
$MysqlConnection->query('START TRANSACTION;');
$erg = $MysqlConnection->query('UPDATE MyGuests SET lastname=...
Can a class member function template be virtual?
...on as virtual, as you can see, it hard to determine function signature and allocate vtable entries.
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What does ~~ (“double tilde”) do in Javascript?
...nd-about way.
See this thread: http://www.sitepoint.com/forums/showthread.php?t=663275
Also, more detailed info is available here: http://dreaminginjavascript.wordpress.com/2008/07/04/28/
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How to run a PowerShell script without displaying a window?
... Hidden
You can also do this with VBScript: http://blog.sapien.com/index.php/2006/12/26/more-fun-with-scheduled-powershell/
Schedule Hidden PowerShell Tasks (Internet Archive)
More fun with scheduled PowerShell (Internet Archive)
(Via this forum thread.)
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What are the differences between a multidimensional array and an array of arrays in C#?
...which is the base address of the array.
A multidimensional array therefore allocates a continuous memory block, while a jagged array does not have to be square, e.g. jagged[1].Length does not have to equal jagged[2].Length, which would be true for any multidimensional array.
Performance
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How do I print out the contents of an object in Rails for easy debugging?
I think I'm trying to get the PHP equivalent of print_r() (print human-readable); at present the raw output is:
8 Answers...
For a boolean field, what is the naming convention for its getter/setter?
...r: http://martinfowler.com/bliki/FlagArgument.html
However, I come from a PHP background and see this trend being adopted more and more. Not sure how much this lives with Java development.
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Does a `+` in a URL scheme/host/path represent a space?
... To get a literal + to be received by the back end (or, at least PHP) it has to be triple encoded: %25252B
– Umbrella
Sep 30 '15 at 15:01
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What are the use cases for selecting CHAR over VARCHAR in SQL?
...user comes along later and puts more data into that column SQL has already allocated space for it and in it goes.
Another reason to use CHAR is similar to the second reason. If a programmer or user does a "batch" update to millions of rows, adding some sentence to a note field for example, you won'...
Adding VirtualHost fails: Access Forbidden Error 403 (XAMPP) (Windows 7)
... The httpd-vhosts.conf is a config file for Apache. Apache 'runs' the php-code. Download and install xampp and change the config as stated above.
– Highmastdon
Nov 12 '12 at 11:52
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