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Phonegap Cordova installation Windows
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13 Answers
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Active
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How to write a bash script that takes optional input arguments?
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You could use the default-value syntax:
somecommand ${1:-foo}
The above will, as described in Bash Reference Manual - 3.5.3 Shell Parameter Expansion [emphasis mine]:
If parameter is unset or null, the expansion of word is substituted. Otherwise, the value of parameter is ...
Python creating a dictionary of lists
...s import defaultdict
>>> d = defaultdict(list)
>>> a = ['1', '2']
>>> for i in a:
... for j in range(int(i), int(i) + 2):
... d[j].append(i)
...
>>> d
defaultdict(<type 'list'>, {1: ['1'], 2: ['1', '2'], 3: ['2']})
>>> d.items()
[(1, ['1']), (...
Calculating frames per second in a game
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19 Answers
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How to get the input from the Tkinter Text Widget?
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132
To get Tkinter input from the text box, you must add a few more attributes to the normal .get(...
How to return a part of an array in Ruby?
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195
Yes, Ruby has very similar array-slicing syntax to Python. Here is the ri documentation for th...
Convert Year/Month/Day to Day of Year in Python
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261
There is a very simple solution:
from datetime import datetime
day_of_year = datetime.now().tim...
Real life example, when to use OUTER / CROSS APPLY in SQL
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Some uses for APPLY are...
1) Top N per group queries (can be more efficient for some cardina...
How to find the installed pandas version
...sion__:
In [76]: import pandas as pd
In [77]: pd.__version__
Out[77]: '0.12.0-933-g281dc4e'
Pandas also provides a utility function, pd.show_versions(), which reports the version of its dependencies as well:
In [53]: pd.show_versions(as_json=False)
INSTALLED VERSIONS
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commit:...