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What is the difference between a static and a non-static initialization code block
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– Rafael Winterhalter
Jun 17 '14 at 15:32
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How to make a chain of function decorators?
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32
*argsand **kwargs should be added in the answer. Decorated function can have arguments, and they will be lost if not specified.
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LINQ: Distinct values
...ityComparer<T>
{
private readonly Func<T, T, bool> _expression;
public LambdaComparer(Func<T, T, bool> lambda)
{
_expression = lambda;
}
public bool Equals(T x, T y)
{
return _expression(x, y);
}
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Unique Key constraints for multiple columns in Entity Framework
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With Entity Framework 6.1, you can now do this:
[Index("IX_FirstAndSecond", 1, IsUnique = true)]
public int FirstColumn { get; set; }
[Index("IX_FirstAndSecond", 2, IsUnique = true)]
public int SecondColumn { get; set; }
The second parameter in the attribute is where you can spec...
In Python, how do I read the exif data for an image?
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You can use the _getexif() protected method of a PIL Image.
import PIL.Image
img = PIL.Image.open('img.jpg')
exif_data = img._getexif()
This should give you a dictionary indexed by EXIF numeric tags. If you want the dictionary indexed by t...
Is it better in C++ to pass by value or pass by constant reference?
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edited Dec 9 '14 at 21:32
ahcox
7,44655 gold badges2828 silver badges3636 bronze badges
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iPhone: How to get current milliseconds?
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Stan James
2,1772323 silver badges3434 bronze badges
answered Apr 30 '10 at 5:03
Allan SimonsenAllan Simonsen
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image processing to improve tesseract OCR accuracy
... the kernel size depending on your data set):
kernel = np.ones((1, 1), np.uint8)
img = cv2.dilate(img, kernel, iterations=1)
img = cv2.erode(img, kernel, iterations=1)
Applying blur, which can be done by using one of the following lines (each of which has its pros and cons, however, median blur an...
Convert datetime object to a String of date only in Python
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If you want the time as well, just go with
datetime.datetime.now().__str__()
Prints 2019-07-11 19:36:31.118766 in console for me
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Unicode Processing in C++
... Unicode support: http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2011/n3242.pdf
So the truly best practice for Unicode processing in C++ would be to use the built in facilities for it. That isn't always a possibility with older code bases though, with the standard being so new at present.
EDIT...