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Difference between abstract class and interface in Python
...e or more methods, or to exploit the single-inheritance model to limit the range of classes that could use a set of methods.
Languages that support the multiple-inheritance model tend to use only classes or abstract base classes and not interfaces. Since Python supports multiple inheritance, it ...
A better similarity ranking algorithm for variable length strings
...bigrams.
"""
s = string.lower()
return [s[i:i+2] for i in list(range(len(s) - 1))]
def string_similarity(str1, str2):
"""
Perform bigram comparison between two strings
and return a percentage match in decimal form.
"""
pairs1 = get_bigrams(str1)
pairs2 = get_bigr...
What is an SSTable?
... specified key, and to iterate over all key/value pairs in a specified key range. Internally, each SSTable contains a sequence of blocks (typically each block is 64KB in size, but this is configurable). A block index (stored at the end of the SSTable) is used to locate blocks; the index is loaded in...
What is a rune?
...u were to look at the Unicode mapping, which is identical to ASCII in that range. Furthermore, 32 is in fact the offset between the uppercase and lowercase codepoint of the character. So by adding 32 to 'A', you get 'a' and vice versa.
...
How does the vim “write with sudo” trick work?
...ll see that the highlighted lines take the place of % as your substitution range.)
:w isn't updating your file
One confusing part of this trick is that you might think :w is modifying your file, but it isn't. If you opened and modified file1.txt, then ran :w file2.txt, it would be a "save as"; fil...
Best way to make Java's modulus behave like it should with negative numbers?
...1
0| 0
1| 1
2| 2
3| 0
4| 1
5| 2
If the input is random in the full range of an int, the distribution of both two solutions will be the same. If the input clusters near zero, there will be too few results at n - 1 in the latter solution.
...
How can I change Eclipse theme?
...dow -> Preferences -> Appearance
Where you can select from a large range of editor themes. My preferred one to use with PyDev is Wombat. For Java Solarized Dark
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Converting a double to an int in C#
... And if score is NaN or an infinity or finite but outside the range of Int32, then Convert.ToInt32 will throw an exception. Cast will return an int, but you won'y know which one (in my implementation it's Int32.MinValue) because you're in unchecked context. (Should you be in checked con...
Nested attributes unpermitted parameters
...
Awesome, I cound't get to permit a range parameter explicitly, this save me some hours.
– Bartek Skwira
Sep 6 '13 at 13:09
3
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Function to Calculate Median in SQL Server
...le = 2
group by quartile
This will give you the median and interquartile range in one fell swoop. If you really only want one row that is the median then uncomment the where clause.
When you stick that into an explain plan, 60% of the work is sorting the data which is unavoidable when calculatin...