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MySQL foreign key constraints, cascade delete
...RITY DEFINER
BEGIN
DELETE FROM
`products`
WHERE
`id` IN (
SELECT `products_id`
FROM `categories_products`
WHERE `categories_id` = category_ID
)
;
DELETE FROM `categories`
WHERE `id` = category_ID;
END
You also need to add the following foreign key constraints...
Implementing MVC with Windows Forms
... bit complex, but it can work well for applications that have a good fit.
Selecting an MVC/MVP Implementation for a Winforms Project give an overview that is worth reading. A lot of people like PureMVC. I have never used it, but I would look at it the next time I need a MVC framework.
"Presenter F...
Simple Digit Recognition OCR in OpenCV-Python
...de a small code in OpenCV. It does following things:
It loads the image.
Selects the digits ( obviously by contour finding and applying constraints on area and height of letters to avoid false detections).
Draws the bounding rectangle around one letter and wait for key press manually. This time we...
Can I 'git commit' a file and ignore its content changes?
...an move it to different Change Set.
Head over to Local Changes (Cmd + 9)
Select file(s) you want to ignore
F6 to move them to another Change Set
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Can an angular directive pass arguments to functions in expressions specified in the directive's att
...ve.html'
};
})
In directive template use it in following way:
<select ng-change="myFunction(selectedAmount)">
And then when you use the directive, pass the function like this:
<data-my-directive
data-my-function="setSelectedAmount">
</data-my-directive>
You pass t...
Is VB really case insensitive?
... You can turn off auto-correct by cheating. Right-click on a vb file and select "Open With". Then pick something like "XML (Text) Editor". You will lose all the VB-specific functionality like auto-correct.
– Jonathan Allen
Feb 20 '10 at 20:03
...
Using Node.js only vs. using Node.js with Apache/Nginx
...pared to using a proper static file web server (Node may also be faster in select scenarios, but this is unlikely to be the norm). On top of files serving more efficiently, you won't have to worry about handling eTags or cache control headers the way you would if you were servings things out of Node...
What is the difference between UTF-8 and Unicode?
...r wants to use. Also, when a text editor program reads a file, it needs to select a text encoding scheme to decode it correctly. Same goes when you are typing and entering a letter, the text editor needs to know what scheme you use so that it will save it correctly.
– Cheng
...
Sanitizing strings to make them URL and filename safe?
...OU
echo normal_chars('üÿÄËÏÖÜŸåÅ'); // uyAEIOUYaA
Based on the selected answer in this thread: URL Friendly Username in PHP?
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Does it make any sense to use inline keyword with templates?
...s, multiple equivalent definitions may be passed to the linker, which will select one). That, not inlining, is the real function of the inline keyword.
– Ben Voigt
Jul 10 '12 at 21:12
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