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Programmer Puzzle: Encoding a chess board state throughout a game
...n English) is a single dot, the shortest possible sequence, whereas Z (the least frequent) is two dashes and two beeps.
Such a scheme can significantly reduce the size of an expected message but comes at the cost of increasing the size of a random character sequence.
It should be noted that Morse ...
Advantages of using display:inline-block vs float:left in CSS
...at. inline-block seems to always requires you to chop off a few pixels (at least in IE)
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How to use Regular Expressions (Regex) in Microsoft Excel both in-cell and loops
...} matches two consecutive lower case letter a: aa
E.g. [a]{1,3} matches at least one and up to three lower case letter a, aa, aaa
+ Match at least one, or more, of the pattern defined before it.
E.g. a+ will match consecutive a's a, aa, aaa, and so on
? Match zero or one of the pa...
How do I check if there are duplicates in a flat list?
...ts hairier, though it may still be possible to get O(N logN) if they're at least comparable. But you need to know or test the characteristics of the items (hashable or not, comparable or not) to get the best performance you can -- O(N) for hashables, O(N log N) for non-hashable comparables, otherwi...
Where is my Django installation?
...
The current top answer doesn't work, at least on linux.
From the Django tutorial:
If you have difficulty finding where the Django source files are
located on your system, run the following command:
python -c "
import sys
sys.path = sys.path[1:]
import djan...
UNIX export command [closed]
... all variables, not just exported (environment) variables. Historically at least, the env command is separate from the shell (not a built-in), though it could easily be made into a built-in. It sets the environment for a specific command, not the shell that runs it.
– Jonathan ...
stringstream, string, and char* conversion confusion
...y-on-write. Thus, you will find that the following holds true (it does, at least on my GCC version)
string a = "hello";
string b(a);
assert(a.c_str() == b.c_str());
The two strings share the same buffer here. At the time you change one of them, the buffer will be copied and each will hold its sep...
'and' (boolean) vs '&' (bitwise) - Why difference in behavior with lists vs numpy arrays?
... defining it.
numpy
On the other leg:-D, numpy arrays are special, or at least they are trying to be. Of course, numpy.array is just a class, it cannot override and in any way, so it does the next best thing: when asked "are you true", numpy.array raises a ValueError, effectively saying "please re...
How and when to use ‘async’ and ‘await’
...fact that in this example, this is all happening on the same thread (or at least what appears to be the same thread in regards to its SynchronizationContext). By default, await will restore the synchronization context of the original thread that it was running on. For example, in ASP.NET you have an...
Fitting empirical distribution to theoretical ones with Scipy (Python)?
...he current scipy.stats distributions and returns the distribution with the least SSE between the distribution's histogram and the data's histogram.
Example Fitting
Using the El Niño dataset from statsmodels, the distributions are fit and error is determined. The distribution with the least error ...