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Convert datetime to Unix timestamp and convert it back in python
...s, which explain about timezones and "naive" and "aware" objects.
If your original naive datetime was UTC, the way to recover it is to use utcfromtimestamp instead of fromtimestamp.
On the other hand, if your original naive datetime was local, you shouldn't have subtracted a UTC timestamp from it ...
Is it safe to get values from a java.util.HashMap from multiple threads (no modification)?
... construction of the HashMap and any reading threads that may access it before it is fully constructed. Most of the discussion is about what happens to the state of the map object, but this is irrelevant since you never modify it - so the only interesting part is how the HashMap reference is publish...
Checking for a dirty index or untracked files with Git
How can I check if I have any uncommitted changes in my git repository:
14 Answers
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Numpy: Divide each row by a vector element
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Here you go. You just need to use None (or alternatively np.newaxis) combined with broadcasting:
In [6]: data - vector[:,None]
Out[6]:
array([[0, 0, 0],
[0, 0, 0],
[0, 0, 0]])
In [7]: data / vector[:,None]
Out[7]:
array([[1, 1, 1],
[1, 1, 1],...
How to determine if binary tree is balanced?
...st at a hospital. Trying to move to do some actual programming now. I'm working on binary trees now, and I was wondering what would be the best way to determine if the tree is height-balanced.
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File name? Path name? Base name? Naming standard for pieces of a path
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I think your search for a "standard" naming convention will be in vain. Here are my proposals, based on existing, well-known programs:
A) C:\users\OddThinking\Documents\My Source\Widget\foo.src
Vim calls it file root (:help filename-modifier...
What is a bank conflict? (Doing Cuda/OpenCL programming)
I have been reading the programming guide for CUDA and OpenCL, and I cannot figure out what a bank conflict is. They just sort of dive into how to solve the problem without elaborating on the subject itself. Can anybody help me understand it? I have no preference if the help is in the context of CUD...
Detect if stdin is a terminal or pipe?
...)
printf( "stdin is a terminal\n" );
else
printf( "stdin is a file or a pipe\n");
(On windows they're prefixed with underscores: _isatty, _fileno)
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valueOf() vs. toString() in Javascript
... the toString() method got invoked whenever a string conversion is called for, but apparently it is trumped by valueOf().
3...
Using Transactions or SaveChanges(false) and AcceptAllChanges()?
... to SaveChanges() and then call AcceptAllChanges() if there are no errors:
3 Answers
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