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What's the difference between Ruby's dup and clone methods?
...rent semantics. In Object itself, there are two key differences.
First, clone copies the singleton class, while dup does not.
o = Object.new
def o.foo
42
end
o.dup.foo # raises NoMethodError
o.clone.foo # returns 42
Second, clone preserves the frozen state, while dup does not.
class Foo
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Python matplotlib multiple bars
...You could easily generate the dates required with numpy's datetime64: e.g. One month worth: np.arange('2012-02', '2012-03', dtype='datetime64[D]'). You might need to think harder about the best way to represent this data if you have 40 datasets (as per another comment) spanning over 100 days.
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Avoiding instanceof in Java
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As with all cases where you are forced to write smelly code, keep it buttoned up in one method (or at most one class) so that the smell doesn't leak out.
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Overwriting my local branch with remote branch [duplicate]
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I did this with one slight change and it didn't work: git fetch --all, git reset --hard SHA1OFANOLDCOMMIT, (some other stuff), git reset --hard origin/branch. The end result was that I was still at the old commit. So, this approach may work ...
Releasing memory in Python
...(512 bytes in 3.3). The pools themselves are in 256 KiB arenas, so if just one block in one pool is used, the entire 256 KiB arena will not be released. In Python 3.3 the small object allocator was switched to using anonymous memory maps instead of the heap, so it should perform better at releasing ...
check if a std::vector contains a certain object? [duplicate]
...s you to check if a std:: container contains something? Or, a way to make one, for example:
3 Answers
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How do I set default terminal to terminator? [closed]
...rnatives switches to the new terminal emulator in manual mode, but the old one is still on auto mode. In the end, it's the old one that keeps starting. Something else is needed.
– Nickolai Leschov
Jan 18 '16 at 5:11
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PHP + MySQL transactions examples
...ansaction
$db->beginTransaction();
// A set of queries; if one fails, an exception should be thrown
$db->query('first query');
$db->query('second query');
$db->query('third query');
// If we arrive here, it means that no exception was thrown
// i.e. ...
How does inline Javascript (in HTML) work?
.... By even beginning to directly code JS inside an HTML file, for instance, one is tempting the slippery slope of spaghettification.
– Steven Lu
Feb 15 '16 at 8:29
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Putty: Getting Server refused our key Error
...ts as other answers helped, but were not exact fit.
First of all, as mentioned in accepted answer, edit
/etc/ssh/sshd_config
and set log level:
LogLevel DEBUG3
Then try to authenticate, and when it fails, look for log file:
/var/log/secure
It will have errors you are looking for.
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