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Matrix Transpose in Python
... to create a matrix transpose function for python but I can't seem to make it work.
Say I have
18 Answers
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HTML5 canvas ctx.fillText won't do line breaks?
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I'm afraid it is a limitation of Canvas' fillText. There is no multi-line support. Whats worse, there's no built-in way to measure line height, only width, making doing it yourself even harder!
A lot of people have written their own mu...
Using “like” wildcard in prepared statement
...execute mysql database queries. And I want to implement a search functionality based on a keyword of sorts.
6 Answers
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Change Author template in Android Studio
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You can overwrite the ${USER} variable in the template file with the
#set( $VARIABLE = "value")
function. Go to Settings -> Editor -> File and Code Templates -> Includes -> File Header prepend the #set() function call, for ...
Get push notification while App in foreground iOS
...nter: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void)
{
completionHandler([.alert, .badge, .sound])
}
iOS 10, Swift 2.3 :
@available(iOS 10.0, *)
func userNotificationCenter...
How do you find out the type of an object (in Swift)?
When trying to understand a program, or in some corner-cases, it's useful to be able to actually find out what type something is. I know the debugger can show you some type information, and you can usually rely on type inference to get away with not specifying the type in those situations, but still...
quick random row selection in Postgres
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You might want to experiment with OFFSET, as in
SELECT myid FROM mytable OFFSET floor(random()*N) LIMIT 1;
The N is the number of rows in mytable. You may need to first do a SELECT COUNT(*) to figure out the value of N.
Update (by Antony Hatchkins)
Yo...
Modify table: How to change 'Allow Nulls' attribute from not null to allow null
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-- replace NVARCHAR(42) with the actual type of your column
ALTER TABLE your_table
ALTER COLUMN your_column NVARCHAR(42) NULL
share
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Hibernate Criteria returns children multiple times with FetchType.EAGER
... have an Order class that has a list of OrderTransactions and I mapped it with a one-to-many Hibernate mapping like so:
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What is the difference between the WPF TextBlock element and Label control? [duplicate]
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The WPF Textblock inherits from FrameworkElement instead of deriving from System.Windows.Control like the Label Control. This means that the Textblock is much more lightweight. The downside of using a textblock is no support for Access/Accerelator ...