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Connect Java to a MySQL database
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answered May 15 '10 at 9:10
Sean OwenSean Owen
62.6k1919 gold badges130130 silver badges163163 bronze badges
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What does -1 mean in numpy reshape?
...example.
z = np.array([[1, 2, 3, 4],
[5, 6, 7, 8],
[9, 10, 11, 12]])
z.shape
(3, 4)
Now trying to reshape with (-1) . Result new shape is (12,) and is compatible with original shape (3,4)
z.reshape(-1)
array([ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12])
Now trying to res...
Rails 4 Authenticity Token
I was working on a new Rails 4 app (on Ruby 2.0.0-p0) when I ran into some authenticity token problems.
13 Answers
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How to get the Power of some Integer in Swift language?
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20 Answers
20
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Creating a copy of an object in C# [duplicate]
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120
There is no built-in way. You can have MyClass implement the IClonable interface (but it is sort...
Converting String to “Character” array in Java
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edited Jul 20 '16 at 19:57
answered Dec 29 '14 at 14:47
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How to store a dataframe using Pandas
...you can load it back using:
df = pd.read_pickle(file_name)
Note: before 0.11.1 save and load were the only way to do this (they are now deprecated in favor of to_pickle and read_pickle respectively).
Another popular choice is to use HDF5 (pytables) which offers very fast access times for large...
How to output something in PowerShell
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200
Simply outputting something is PowerShell is a thing of beauty - and one its greatest strengths...
Change color of UISwitch in “off” state
...tintColor = offColor
mSwitch.layer.cornerRadius = mSwitch.frame.height / 2.0
mSwitch.backgroundColor = offColor
mSwitch.clipsToBounds = true
Result:
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matplotlib does not show my drawings although I call pyplot.show()
...b_fname()
In [1]: import matplotlib.pyplot as p
In [2]: p.plot(range(20),range(20))
Out[2]: [<matplotlib.lines.Line2D object at 0xa64932c>]
In [3]: p.show()
If you edit ~/.matplotlib/matplotlibrc and change the backend to something like GtkAgg, you should see a plot. You can list all...