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Sample random rows in dataframe
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460
First make some data:
> df = data.frame(matrix(rnorm(20), nrow=10))
> df
X1 ...
Is there a way to take a screenshot using Java and save it to some sort of image?
...t(null);
b = new JButton("Click Here");
b.setBounds(380, 290, 120, 60);
b.setBackground(Color.red);
b.setVisible(true);
b.addActionListener(this);
add(b);
setSize(1000, 700);
}
public void actionPerformed(ActionEvent e)
{
if (e.getSource() == b)
{
this.di...
Android: combining text & image on a Button or ImageButton
...ingelschlingel
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2
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How do I update pip itself from inside my virtual environment?
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60
The more safe method is to run pip though a python module:
python -m pip install -U pip
On w...
How to start an application using android ADB tools?
...anCristian
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23
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input() error - NameError: name '…' is not defined
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60
You are running Python 2, not Python 3. For this to work in Python 2, use raw_input.
input_va...
C++ catching all exceptions
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60
try {
// ...
} catch (...) {
// ...
}
Note that the ... inside the catch is a real elli...
Using Python 3 in virtualenv
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60
I'v tried pyenv and it's very handy for switching python versions (global, local in folder or i...
Hibernate: “Field 'id' doesn't have a default value”
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(
`ID` int(11) NOT NULL **AUTO_INCREMENT**,
`FIRSTNAME` varchar(60) NOT NULL,
`SECONDNAME` varchar(100) NOT NULL,
`PROPERTYNUM` varchar(50) DEFAULT NULL,
`STREETNAME` varchar(50) DEFAULT NULL,
`CITY` varchar(50) DEFAULT NULL,
`COUNTY` varchar(50) DEFAULT NULL,
`COU...
Rename column SQL Server 2008
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60
Try:
EXEC sp_rename 'TableName.OldName', 'NewName', 'COLUMN'
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