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How to convert an integer to a string in any base?
Python allows easy creation of an integer from a string of a given base via
27 Answers
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Log to the base 2 in python
How should I compute log to the base two in python. Eg. I have this equation where I am using log base 2
11 Answers
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How do you do natural logs (e.g. “ln()”) with numpy in Python?
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np.log is ln, whereas np.log10 is your standard base 10 log.
Relevant documentation:
http://docs.scipy.org/doc/numpy/reference/generated/numpy.log.html
http://docs.scipy.org/doc/numpy/reference/generated/numpy.log10.html
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converting a base 64 string to an image and saving it
...ect with image.Save(...).
public Image LoadImage()
{
//data:image/gif;base64,
//this image is a single pixel (black)
byte[] bytes = Convert.FromBase64String("R0lGODlhAQABAIAAAAAAAAAAACH5BAAAAAAALAAAAAABAAEAAAICTAEAOw==");
Image image;
using (MemoryStream ms = new MemoryStream(b...
Convert base class to derived class [duplicate]
Is it possible in C# to explicitly convert a base class object to one of it's derived classes? Currently thinking I have to create a constructor for my derived classes that accept a base class object as a parameter and copy over the property values. I don't really like this idea, so I'd like to avoi...
Can we convert a byte array into an InputStream in Java?
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If you use Robert Harder's Base64 utility, then you can do:
InputStream is = new Base64.InputStream(cph);
Or with sun's JRE, you can do:
InputStream is = new
com.sun.xml.internal.messaging.saaj.packaging.mime.util.BASE64DecoderStream(cph)
However...
How do you effectively model inheritance in a database?
What are the best practices for modeling inheritance in databases?
9 Answers
9
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Why seal a class?
... What if an implementation change you have no control over in the base class breaks you? Whose fault is that? Inheritance introduces fragility, basically. Favouring composition over inheritance promotes robustness, IMO.
– Jon Skeet
Nov 6 '08 at 11:05
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Inheriting constructors
...d ones you need to write the individual constructors manually and call the base constructor as needed from them.
Historically constructors could not be inherited in the C++03 standard. You needed to inherit them manually one by one by calling base implementation on your own.
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List all base classes in a hierarchy of given class?
... (whether it is a new-style class or not), how do you generate all the base classes - anywhere in the inheritance hierarchy - it issubclass of?
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