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numpy: most efficient frequency counts for unique values in an array
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Take a look at np.bincount:
http://docs.scipy.org/doc/numpy/reference/generated/numpy.bincount.html
import numpy as np
x = np.array([1,1,1,2,2,2,5,25,1,1])
y = np.bincount(x)
ii = np.nonzero(y)[0]
And then:
zip(ii,y[ii])
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What is scaffolding? Is it a term for a particular platform?
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Scaffolding generally refers to a quickly set up skeleton for an app. It's not rails-only since other platforms have it as well. It's also not generally meant to be a "final" system; merely the first, smallest way to do it.
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How do I get a substring of a string in Python?
...gt;> x[2:-2]
'llo Worl'
Python calls this concept "slicing" and it works on more than just strings. Take a look here for a comprehensive introduction.
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Real escape string and PDO [duplicate]
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You should use PDO Prepare
From the link:
Calling PDO::prepare() and PDOStatement::execute() for statements that will be issued multiple times with different parameter values optimizes the performance of your application by allowing the driver to negotiate cli...
In PyCharm, how to go back to last location?
edit: my system had global key map which had overridden pycharm.
Here's the original question:
11 Answers
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How can I tell jackson to ignore a property for which I don't have control over the source code?
...ws an exception when you call "getBoundary" (the why of this is another book, for now let's say this is the way it works).
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Prevent the keyboard from displaying on activity start
... with an Edit Text input. When the activity is initialized, the Android keyboard is shown. How can the keyboard remain hidden until the user focuses the input?
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Is it possible to solve the “A generic array of T is created for a varargs parameter” compiler warni
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Other than adding @SuppressWarnings("unchecked"), I don't think so.
This bug report has more information but it boils down to the compiler not liking arrays of generic types.
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Does a finally block always get executed in Java?
Considering this code, can I be absolutely sure that the finally block always executes, no matter what something() is?
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What's the purpose of SQL keyword “AS”?
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Sachin ShanbhagSachin Shanbhag
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