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How to convert a PIL Image into a numpy array?
Alright, I'm toying around with converting a PIL image object back and forth to a numpy array so I can do some faster pixel by pixel transformations than PIL's PixelAccess object would allow. I've figured out how to place the pixel information in a useful 3D numpy array by way of:
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Difference between __str__ and __repr__?
What is the difference between __str__ and __repr__ in Python?
23 Answers
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Constructors in JavaScript objects
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@BorisB, yes you do - this defines color and getColor on the Box object, otherwise you're assigning variables in the usual scope.
– Nick
Jun 15 '12 at 16:23
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Why should weights of Neural Networks be initialized to random numbers? [closed]
... AI literature there is a consensus that weights should be initialized to random numbers in order for the network to converge faster.
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What is the difference between ArrayList.clear() and ArrayList.removeAll()?
...h faster since it doesn't have to deal with all those extra method calls.
And as Atrey points out, c.contains(..) increases the time complexity of removeAll to O(n2) as opposed to clear's O(n).
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How to split csv whose columns may contain ,
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Use the Microsoft.VisualBasic.FileIO.TextFieldParser class. This will handle parsing a delimited file, TextReader or Stream where some fields are enclosed in quotes and some are not.
For example:
using Microsoft.VisualBasic.FileIO;
string csv = "2,1016,7/31/2008 14:22,Geoff Dalgas,6/5/2011 2...
error: request for member '..' in '..' which is of non-class type
I have a class with two constructors, one that takes no arguments and one that takes one argument.
9 Answers
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How to check if a column exists in Pandas
Is there a way to check if a column exists in a Pandas DataFrame?
3 Answers
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What is the difference between encode/decode?
I've never been sure that I understand the difference between str/unicode decode and encode.
6 Answers
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Why doesn't nodelist have forEach?
... why NodeList doesn't inherit from Array, thus allowing it to have forEach and all the rest.
The answer is found on this es-discuss thread. In short, it breaks the web:
The problem was code that incorrectly assumed instanceof to mean that the instance was an Array in combination with Array.prototyp...