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How can the Euclidean distance be calculated with NumPy?
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Use numpy.linalg.norm:
dist = numpy.linalg.norm(a-b)
You can find the theory behind this in Introduction to Data Mining
This works because Euclidean distance is l2 norm and the default value of ord parameter in numpy.linalg.nor...
What happens if you static_cast invalid value to enum class?
...hat is color set to according to the standard?
Answering with a quote from the C++11 and C++14 Standards:
[expr.static.cast]/10
A value of integral or enumeration type can be explicitly converted to an enumeration type. The value is unchanged if the original value is within the range of the e...
How do I see what character set a MySQL database / table / column is?
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Here's how I'd do it -
For Schemas (or Databases - they are synonyms):
SELECT default_character_set_name FROM information_schema.SCHEMATA
WHERE schema_name = "schemaname";
For Tables:
SELECT CCSA.character_set_name FROM information_schema.`TABLES` T,
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When to create a new app (with startapp) in Django?
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James Bennett has a wonderful set of slides on how to organize reusable apps in Django.
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Using NSPredicate to filter an NSArray based on NSDictionary keys
...dictionary with the key SPORT
NSArray *data = [NSArray arrayWithObject:[NSMutableDictionary dictionaryWithObject:@"foo" forKey:@"BAR"]];
NSArray *filtered = [data filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"(BAR == %@)", @"foo"]];
Filtered in this case contains the dictiona...
String slugification in Python
I am in search of the best way to "slugify" string what "slug" is , and my current solution is based on this recipe
10 An...
How to detect modifier key states in WPF?
Is there some global constructs that I can use whenever I need to access whether the Control, Shift, Alt buttons are down? For instance inside MouseDown event of a TreeView .
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How to get Core Data object from specific Object ID?
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You want:
-(NSManagedObject *)existingObjectWithID:(NSManagedObjectID *)objectID
error:(NSError **)error
Fetches the object from the store that has that ID, or nil if it doesn't exist.
(Be aware: there...
Transitions with GStreamer Editing Services freezes, but works OK without transitions
I'm trying to use gstreamer's GStreamer Editing Services to concatenate 2 videos, and to have a transition between the two.
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How do I see the current encoding of a file in Sublime Text?
How do I see the current encoding of a file in Sublime Text?
6 Answers
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