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shared_ptr to an array : should it be used?
...hen you allocate using new[] you need to call delete[], and not delete, to free the resource.
In order to correctly use shared_ptr with an array, you must supply a custom deleter.
template< typename T >
struct array_deleter
{
void operator ()( T const * p)
{
delete[] p;
}
};
Cr...
How to call an external command?
... line in p.stdout.readlines():
print line,
retval = p.wait()
You are free to do what you want with the stdout data in the pipe. In fact, you can simply omit those parameters (stdout= and stderr=) and it'll behave like os.system().
...
Find location of a removable SD card
...rted way, in better ways than they have been able to before: they can make free use of their app-specific storage area without requiring any permissions in the app, and can access any other files on the SD card as long as they go through the file picker, again without needing any special permissions...
Does “untyped” also mean “dynamically typed” in the academic CS world?
... has been implemented and is used in a partial evaluator for a side-effect free dialect of Scheme. The analysis is general enough, however, to be valid for non-strict typed functional languages such as Haskell. […]
— Charles Consel, 1990 [link]
By the way, my impression, after looking through...
What is the Difference Between Mercurial and Git?
...osting to github.com with bitbucket.org (actually even better as you get a free private repository). I was using msysGit for a while but moved to Mercurial and been very happy with it.
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When would I use Task.Yield()?
...oAsync() will actually run asynchronously. The internal implementation is free to return using a completely synchronous path.
If you're making an API where it's critical that you don't block and you run some code asynchronously, and there's a chance that the called method will run synchronously (e...
What are the advantages of NumPy over regular Python lists?
...is also more convenient. You get a lot of vector and matrix operations for free, which sometimes allow one to avoid unnecessary work. And they are also efficiently implemented.
For example, you could read your cube directly from a file into an array:
x = numpy.fromfile(file=open("data"), dtype=flo...
Is it considered acceptable to not call Dispose() on a TPL Task object?
...ects 99% of the time.
There are two main reasons to dispose an object: to free up unmanaged resources in a timely, deterministic way, and to avoid the cost of running the object's finalizer. Neither of these apply to Task most of the time:
As of .Net 4.5, the only time a Task allocates the intern...
Elegant ways to support equivalence (“equality”) in Python classes
...or gives you the interpreters answer to object identity, but you are still free to express you view on equality by overriding cmp
– Vasil
Dec 23 '08 at 22:49
7
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How do I add a submodule to a sub-directory?
... more steps. Ideally, the existing repo is moved out to its own directory, free of any parent git modules, committed and pushed, and then added as a submodule like:
proj> git submodule add git@bitbucket.org:user/jslib.git ui/jslib
That will clone the git repo in as a submodule - which involves...