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Docker EXPOSE a port only to Host
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145
Sure, just bind it to localhost, like this:
docker run -p 127.0.0.1:27017:27017
Also: You...
Generate array of all letters and digits
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145
[*('a'..'z'), *('0'..'9')] # doesn't work in Ruby 1.8
or
('a'..'z').to_a + ('0'..'9').to_a #...
Get loop count inside a Python FOR loop
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answered Oct 16 '13 at 8:34
Vikram GargVikram Garg
98966 silver badges88 bronze badges
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CSS 3 slide-in from left transition
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edited Feb 14 '14 at 8:27
answered Jun 8 '13 at 8:28
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What is the default value for enum variable?
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384
It is whatever member of the enumeration represents the value 0. Specifically, from the document...
str performance in python
...tly) faster than str:
>>> Timer('str(x)', 'x=100').timeit()
0.25641703605651855
>>> Timer('"%s" % x', 'x=100').timeit()
0.2169809341430664
Do note that str is still slightly slower, as @DietrichEpp said, this is because str involves lookup and function call operations, while % c...
Creating a zero-filled pandas data frame
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140
You can try this:
d = pd.DataFrame(0, index=np.arange(len(data)), columns=feature_list)
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Which is better, number(x) or parseFloat(x)?
...x10'; // => 16
Number('10x'); // => NaN
+'10x'; // => NaN
Number('40'); // => 40
+'40'; // => 40
So I usually just use + for short. As long as you know what it does, I find it easy to read.
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If vs. Switch Speed
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answered Jan 14 '09 at 23:16
Konrad RudolphKonrad Rudolph
461k118118 gold badges863863 silver badges11101110 bronze badges
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Which regular expression operator means 'Don't' match this character?
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4 Answers
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