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Filter rows which contain a certain string
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263
The answer to the question was already posted by the @latemail in the comments above. You can us...
Regular expression to match numbers with or without commas and decimals in text
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293
EDIT: Since this has gotten a lot of views, let me start by giving everybody what they Googled f...
Plot a legend outside of the plotting area in base graphics?
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113
Maybe what you need is par(xpd=TRUE) to enable things to be drawn outside the plot region. So if...
How to slice an array in Bash
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317
See the Parameter Expansion section in the Bash man page. A[@] returns the contents of the arr...
C#位运算符（C#按位与、按位或 等） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...如：10010001（二进制）&11110000等于10010000（二进制）。
3、位逻辑或运算
位逻辑或运算将两个运算对象按位进行或运算。或运算的规则是：1或1等1，1或0等于1，
0或0等于0。比如10010001（二进制）| 11110000（二进制）等于11110001...
Find integer index of rows with NaN in pandas dataframe
...n use to index back into df, e.g.:
df['a'].ix[index[0]]
>>> 1.452354
For the integer index:
df_index = df.index.values.tolist()
[df_index.index(i) for i in index]
>>> [3, 6]
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What does axis in pandas mean?
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399
It specifies the axis along which the means are computed. By default axis=0. This is consisten...
How to pretty-print a numpy.array without scientific notation and with given precision?
...f the output:
import numpy as np
x=np.random.random(10)
print(x)
# [ 0.07837821 0.48002108 0.41274116 0.82993414 0.77610352 0.1023732
# 0.51303098 0.4617183 0.33487207 0.71162095]
np.set_printoptions(precision=3)
print(x)
# [ 0.078 0.48 0.413 0.83 0.776 0.102 0.513 0.462 0.335...
Using numpy to build an array of all combinations of two arrays
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131
In newer version of numpy (>1.8.x), numpy.meshgrid() provides a much faster implementation:
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How to update gradle in android studio?
...Official links
Version Compatibility
Migrate to Android Plugin for Gradle 3.0.0
Find out the latest version of Gradle
Info about the Gradle Wrapper
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