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Difference between 3NF and BCNF in simple terms (must be able to explain to an 8-year old)
...in BCNF because there is no column (either key or non-key) that is functionally dependent on anything besides that key.
Because each pizza must have exactly one of each topping type, we know that (Pizza, Topping Type) is a candidate key. We also know intuitively that a given topping cannot belong ...
Deep copying an NSArray
Is there any built-in function that allows me to deep copy an NSMutableArray ?
6 Answers
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Going from a framework to no-framework [closed]
...3rd-party ads/badges/videos. Already in WebKit. Likely to be at least partially implemented in Firefox 11.)
Content Security Policy (Firefox 4's new security framework, complimentary to the sandbox attribute. Now also being implemented in Chrome.)
If you're accepting HTML as input, I recommend gr...
Is there a way to list task dependencies in Gradle?
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you can use the --all flag to get a more detailed listing of the available tasks and the task dependencies
gradle tasks --all
EDIT: as noted by Radim in the comments, this command does not report dependencies, for gradle 3.3 and newer (see ...
How to move a git repository into another directory and make that directory a git repository?
...create it)
$ cp -r gitrepo1 newrepo
# remove .git from old repo to delete all history and anything git from it
$ rm -rf gitrepo1/.git
Note that the copy is quite expensive if the repository is large and with a long history. You can avoid it easily too:
# move the directory instead
$ mv gitrepo1 ...
Why does std::getline() skip input after a formatted extraction?
..., it follows that it must be skipped or ignored somehow. One option is to call std::cin.ignore() after the the first extraction. It will discard the next available character so that the newline is no longer in the way.
std::getline(std::cin.ignore(), state)
In-Depth Explanation:
This is the overlo...
How do I check if an element is hidden in jQuery?
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I actually found that the reverse logic words better: !$('selector').is(':hidden'); for some reason. Worth a try.
– Kzqai
Jan 5 '12 at 15:36
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How do I disable form fields using CSS?
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That looked like just what I was after to disable all my input fields but, although it blocks them from mouse events, they can still be accessed and changed using keyboard tab
– Ken
Oct 20 '15 at 15:18
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Difference between Select and ConvertAll in C#
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Select is a LINQ extension method and works on all IEnumerable<T> objects whereas ConvertAll is implemented only by List<T>. The ConvertAll method exists since .NET 2.0 whereas LINQ was introduced with 3.5.
You should favor Select over ConvertAll as it works ...
Remove non-numeric characters (except periods and commas) from a string
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You could use preg_replace to swap out all non-numeric characters and the comma and period/full stop as follows:
$testString = '12.322,11T';
echo preg_replace('/[^0-9,.]+/', '', $testString);
The pattern can also be expressed as /[^\d,.]+/
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