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ERROR 1396 (HY000): Operation CREATE USER failed for 'jack'@'localhost'
...ving privileges and DROP USER for deleting them:
REVOKE priv1,priv2,priv3,etc... FROM 'jack@localhost'; // remove certain privileges
DROP USER 'jack@localhost'; // completely delete the account
Best to use the tools provided rather than mucking around in the background.
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delete vs delete[] operators in C++
... elements allocated - it may use this for any purpose it wants (debugging, etc...).
For the new that creates a non-array object, it will look for an operator new in the element's class or in the global scope. It passes the amount of memory requested (exactly sizeof(T) always).
For the delete[], ...
Background color not showing in print preview
...eeded to add the !important attribute onto the the background-color tag in order for it to show up, did not need the webkit part:
background-color: #f5f5f5 !important;
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Programmatically open Maps app in iOS 6
...ower code in an else statement after that if. Note that if you reverse the order of items in the openMapsWithItems: array, you'll get directions from the coordinate to your current location. You could probably use it to get directions between any two locations by passing a constructed MKMapItem inst...
How do I compute derivative using Numpy?
... empty, data isn't sorted against x or when sorted isn't a valid function, etc. It's possible scipy is calling numpy incorrectly, but very unlikely. Check x.shape and y.shape. See if np.interp() works - it may provide a more helpful error if not.
– flutefreak7
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Loop through files in a folder using VBA?
...can change its argument to return different type of files (hidden, system, etc.) - see MS documentation : docs.microsoft.com/en-us/office/vba/language/reference/…
– Vincent
Apr 14 at 12:47
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Convert the values in a column into row names in an existing data frame
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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Is there a quick way to delete a file from a Jar / war without having to extract the jar and recreat
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In case you want to delete file in order to unsign signed jar, you can probably just make the .RSA file zero-sized. This can be accomplished with just jar u. See https://stackoverflow.com/a/24678645/653539 . (Worked for me, though I admit it's hack.)
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How to make a new List in Java
... 8
To create a non-empty list of fixed size (operations like add, remove, etc., are not supported):
List<Integer> list = Arrays.asList(1, 2); // but, list.set(...) is supported
To create a non-empty mutable list:
List<Integer> list = new ArrayList<>(Arrays.asList(3, 4));
In ...
Why does JPA have a @Transient annotation?
...ystem uses tools to generate entities from database. (Hibernate has those, etc...)
Now, suppose that by your business logic you need a particular field NOT to be persisted. You have to "configure" your entity in a particular way.
While Transient keyword works on an object - as it behaves within a j...