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What are the differences between json and simplejson Python modules?
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wim
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answered Apr 3 '09 at 6:59
Devin JeanpierreDe...
Converting numpy dtypes to native python types
...py as np
# for example, numpy.float32 -> python float
val = np.float32(0)
pyval = val.item()
print(type(pyval)) # <class 'float'>
# and similar...
type(np.float64(0).item()) # <class 'float'>
type(np.uint32(0).item()) # <class 'long'>
type(np.int16(0).item()) # <...
How do I base64 encode (decode) in C?
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106
Here's the one I'm using:
#include <stdint.h>
#include <stdlib.h>
static char en...
How to format a number as percentage in R?
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10 Answers
10
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Reference — What does this symbol mean in PHP?
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20 Answers
20
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String concatenation in Ruby
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580
You can do that in several ways:
As you shown with << but that is not the usual way
With...
User recognition without cookies or local storage
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+350
Introduction
If I understand you correctly, you need to identify a user for whom you don't have a Unique Identifier, so you want to f...
pandas dataframe columns scaling with sklearn
...;> scaler = MinMaxScaler()
>>> dfTest = pd.DataFrame({'A':[14.00,90.20,90.95,96.27,91.21],
'B':[103.02,107.26,110.35,114.23,114.68],
'C':['big','small','big','small','small']})
>>> dfTest[['A', 'B']] = scaler.fit_transform(...
How to assign string to bytes array
...ices in Go is using a slice of bytes []byte and not a set array of bytes [20]byte when converting a string to bytes... Don't believe me? Check out Rob Pike's answer on this thread
– openwonk
Feb 14 '16 at 0:44
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How to add an extra column to a NumPy array
...lution and faster to boot is to do the following:
import numpy as np
N = 10
a = np.random.rand(N,N)
b = np.zeros((N,N+1))
b[:,:-1] = a
And timings:
In [23]: N = 10
In [24]: a = np.random.rand(N,N)
In [25]: %timeit b = np.hstack((a,np.zeros((a.shape[0],1))))
10000 loops, best of 3: 19.6 us per ...