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Decimal precision and scale in EF Code First
... changes, from EF 4.1 onwards the ModelBuilder class is now DbModelBuilder and there is now a DecimalPropertyConfiguration.HasPrecision Method which has a signature of:
public DecimalPropertyConfiguration HasPrecision(
byte precision,
byte scale )
where precision is the total number of digits the...
Simple proof that GUID is not unique [closed]
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PS: I wanted to try out the Parallel extensions library. That was easy.
And using OutOfMemoryException as control flow just feels wrong.
EDIT
Well, it seems this still attracts votes. So I've fixed the GC.KeepAlive() issue. And changed it to run with C# 4.
And to clarify my support terms: supp...
unable to copy/paste in mingw shell
I just installed MinGW on Windows and I'm unable to copy/paste as I am used to on Linux or even PuTTY. What is the trick for copying and pasting text (e.g. from chrome) into MinGW shell?
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Python hashable dicts
As an exercise, and mostly for my own amusement, I'm implementing a backtracking packrat parser. The inspiration for this is i'd like to have a better idea about how hygenic macros would work in an algol-like language (as apposed to the syntax free lisp dialects you normally find them in). Because...
Is recursion ever faster than looping?
I know that recursion is sometimes a lot cleaner than looping, and I'm not asking anything about when I should use recursion over iteration, I know there are lots of questions about that already.
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How to jump back to NERDTree from file in tab?
...ws (so you could hop between the NERDTree window, the file you are editing and the help window, for example... just hold down Ctrl and press w twice).
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Where are my postgres *.conf files?
...e it because I can't find config files. Searched through entire hard drive and found only samples like pg_hba.conf.sample
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How do I generate a random int number?
How do I generate a random integer in C#?
32 Answers
32
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How to calculate a logistic sigmoid function in Python?
...uld do it:
import math
def sigmoid(x):
return 1 / (1 + math.exp(-x))
And now you can test it by calling:
>>> sigmoid(0.458)
0.61253961344091512
Update: Note that the above was mainly intended as a straight one-to-one translation of the given expression into Python code. It is not t...
Converting from a string to boolean in Python?
...ref.html#distutils.util.strtobool
True values are y, yes, t, true, on and 1; false values are n, no, f, false, off and 0. Raises ValueError if val is anything else.
Be aware that distutils.util.strtobool() returns integer representations and thus it needs to be wrapped with bool() to get Bool...