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How to remove specific elements in a numpy array
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Why does X[Y] join of data.tables not allow a full outer join, or a left join?
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To quote from the data.table FAQ 1.11 What is the difference between X[Y] and merge(X, Y)?
X[Y] is a join, looking up X's rows using Y (or Y's key if it has one) as an index.
Y[X] is a join, looking up Y's rows using X (or X's key if it has one)
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Static variables in member functions
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Since class A is a non-template class and A::foo() is a non-template function. There will be o...
Alter Table Add Column Syntax
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198
Just remove COLUMN from ADD COLUMN
ALTER TABLE Employees
ADD EmployeeID numeric NOT NULL ID...
How to change Android version and code version number?
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Is it possible to view RabbitMQ message contents directly from the command line?
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You should enable the management plugin.
rabbitmq-plugins enable rabbitmq_management
See he...
Why is Go so slow (compared to Java)?
As we could see from The Computer Language Benchmarks Game in 2010:
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Analyze audio using Fast Fourier Transform
...ly spaced frequencies, starting at 0. Because your sampling frequency is 44100 samples / sec. and the number of points in your FFT is 256, your frequency spacing is 44100 / 256 = 172 Hz (approximately)
The first coefficient in your array will be the 0 frequency coefficient. That is basically the av...
binning data in python with scipy/numpy
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It's probably faster and easier to use numpy.digitize():
import numpy
data = numpy.random.ran...
Generate random password string with requirements in javascript
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