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How do I negate a test with regular expressions in a bash script?
Using GNU bash (version 4.0.35(1)-release (x86_64-suse-linux-gnu), I would like to negate a test with Regular Expressions. For example, I would like to conditionally add a path to the PATH variable, if the path is not already there, as in:
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An “and” operator for an “if” statement in Bash
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4 Answers
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Assign pandas dataframe column dtypes
...05-01
1 b 2 2018-05-02
df.dtypes
x object
y int64
z datetime64[ns]
dtype: object
and confirm the dtype is updated.
OLD/DEPRECATED ANSWER for pandas 0.12 - 0.16: You can use convert_objects to infer better dtypes:
In [21]: df
Out[21]:
x y
0 a 1
1 b 2
In [...
How to use Active Support core extensions
...tive_support/all'
=> true
irb(main):002:0> 1.week.ago
=> 2010-11-14 17:56:16 -0700
irb(main):003:0>
For 1.8.7:
rvm 1.8.7
irb -f
irb(main):001:0> require 'rubygems'
=> true
irb(main):002:0> require 'active_support/all'
=> true
irb(main):003:0> 1.week.ago
=> Sun Nov 1...
Difference between Document-based and Key/Value-based databases?
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edited Dec 6 '17 at 2:46
cs95
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answered ...
In Eclipse, can I have multiple Console views at once, each showing a different Console?
... of each other.
I'm using Eclipse Helios Release with build ID: 20100617-1415.
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How to get a one-dimensional scalar array as a doctrine dql query result?
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answered Dec 20 '12 at 9:45
Lionel GaillardLionel Gaillard
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How to iterate over the keys and values in an object in CoffeeScript?
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How can I list (ls) the 5 last modified files in a directory?
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Paul RubelPaul Rubel
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Center Google Maps (V3) on browser resize (responsive)
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You need to have an event listener for when the window resizes. This worked for me (put it in ...