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High performance fuzzy string comparison in Python, use Levenshtein or difflib [closed]
...t in a complicated way on how many elements the sequences have in common. (from here)
Levenshtein is O(m*n), where n and m are the length of the two input strings.
Performance
According to the source code of the Levenshtein module :
Levenshtein has a some overlap with difflib (SequenceMatcher). ...
Declaring variables inside a switch statement [duplicate]
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Not surprising. It's nice that the error from C# is actually a bit more clear than the gcc error. And actually, I'm not sure I'd classify it as a "problem"... more of an intentionally prohibited syntax. I would guess that most C-based languages act similarly.
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The modulo operation on negative numbers in Python
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Here's an explanation from Guido van Rossum:
http://python-history.blogspot.com/2010/08/why-pythons-integer-division-floors.html
Essentially, it's so that a/b = q with remainder r preserves the relationships b*q + r = a and 0 <= r < b.
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jquery live hover
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T-SQL Cast versus Convert
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How to reverse-i-search back and forth? [duplicate]
... am actually looking for. Because CTRL + r searches backward in history, from newest to oldest, I have to:
3 Answers
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Markdown open a new window link [duplicate]
... one could run the following sed command once the (X)HTML has been created from Markdown:
sed -i 's|href="http|target="_blank" href="http|g' index.html
This can be further automated in a single workflow when a Makefile with build instructions is employed.
PS: This answer was written at a time when ...
How can we match a^n b^n with Java regex?
...s when you're subjected to various constraints, the systematic composition from various parts to build a working solution, etc.
Bonus material! PCRE recursive pattern!
Since we did bring up PHP, it needs to be said that PCRE supports recursive pattern and subroutines. Thus, following pattern works ...
Alias with variable in bash [duplicate]
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If you are using the Fish shell (from http://fishshell.com ) instead of bash, they write functions a little differently.
You'll want to add something like this to your ~/.config/fish/config.fish which is the equivalent of your ~/.bashrc
function tail_ls
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django order_by query set, ascending and descending
...would still work, but you only need to add all() when you want all objects from the root QuerySet.
More on this here:
https://docs.djangoproject.com/en/dev/topics/db/queries/#retrieving-specific-objects-with-filters
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