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How assignment works with Python list slice?
... doc says that slicing a list returns a new list.
Now if a "new" list is being returned I've the following questions related to "Assignment to slices"
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Is it intended by the C++ standards committee that in C++11 unordered_map destroys what it inserts?
I've just lost three days of my life tracking down a very strange bug where unordered_map::insert() destroys the variable you insert. This highly non-obvious behaviour occurs in very recent compilers only: I found that clang 3.2-3.4 and GCC 4.8 are the only compilers to demonstrate this "feature"....
How to insert an item at the beginning of an array in PHP?
I know how to insert it to the end by:
9 Answers
9
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Substitute multiple whitespace with single whitespace in Python [duplicate]
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A simple possibility (if you'd rather avoid REs) is
' '.join(mystring.split())
The split and join perform the task you're explicitly asking about -- plus, they also do the extra one that you don't talk about but is seen in your example,...
How do I tell git-svn about a remote branch created after I fetched the repo?
I'm using git-svn to work against my company's central Subversion repository. We've recently created a new feature branch in the central repo.
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Why do we need a pure virtual destructor in C++?
...e virtual destructors are allowed is that to prohibit them would mean adding another rule to the language and there's no need for this rule since no ill-effects can come from allowing a pure virtual destructor.
Nope, plain old virtual is enough.
If you create an object with default implementation...
C++ Tuple vs Struct
Is there is any difference between using a std::tuple and a data-only struct ?
12 Answers
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Change the name of a key in dictionary
...ee', 'ONE': 'one'}
>>> dictionary['ONE'] = dictionary.pop(1)
Traceback (most recent call last):
File "<input>", line 1, in <module>
KeyError: 1
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Android: AsyncTask vs Service
...nswer to most questions here a lot about AsyncTask and Loaders but nothing about Services ? Are Services just not known very well or are they deprecated or have some bad attributes or something? What are the differences?
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Python multiprocessing PicklingError: Can't pickle
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Here is a list of what can be pickled. In particular, functions are only picklable if they are defined at the top-level of a module.
This piece of code:
import multiprocessing as mp
class Foo():
@staticmethod
def work(self):
pass
if...