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How to create a file in memory for user to download, but not through server?
.... If you have a text or CSV file, start the string with '\ufeff', the Byte Order Mark for UTF-16BE, and text editors will be able to read non-ASCII characters correctly.
– larspars
Nov 19 '14 at 9:06
...
Can anyone explain python's relative imports?
...from package "sub". start.py is not itself in a package even if there is a __init__.py present.
You would need to start your program from one directory over parent.py:
./start.py
./pkg/__init__.py
./pkg/parent.py
./pkg/sub/__init__.py
./pkg/sub/relative.py
With start.py:
import pkg.sub.relativ...
Why does “return list.sort()” return None, not the list?
...e object named -- think of it as an action that the object is taking to re-order itself. The sort function is an operation over the data represented by an object and returns a new object with the same contents in a sorted order.
Given a list of integers named l the list itself will be reordered if ...
What new capabilities do user-defined literals add to C++?
...its>
inline constexpr std::bitset<sizeof...(Bits)>
operator"" _bits() noexcept
{
static_assert(checkbits<Bits...>::valid, "invalid digit in binary string");
return std::bitset<sizeof...(Bits)>((char []){Bits..., '\0'});
}
int
main()
{
auto bits = 0101010101010...
Find the nth occurrence of substring in a string
... more Pythonic version of the straightforward iterative solution:
def find_nth(haystack, needle, n):
start = haystack.find(needle)
while start >= 0 and n > 1:
start = haystack.find(needle, start+len(needle))
n -= 1
return start
Example:
>>> find_nth("fo...
Convert a Scala list to a tuple?
... I know of, but it's easy enough to make your own, e.g. case class Vec3[A](_1: A, _2: A, _3: A)
– Tom Crockett
Sep 16 '14 at 6:43
...
Fastest way to list all primes below N
...on.
Below is a script which compares a number of implementations:
ambi_sieve_plain,
rwh_primes,
rwh_primes1,
rwh_primes2,
sieveOfAtkin,
sieveOfEratosthenes,
sundaram3,
sieve_wheel_30,
ambi_sieve (requires numpy)
primesfrom3to (requires numpy)
primesfrom2to (requires numpy)
Many thanks to...
Find out how much memory is being used by an object in Python [duplicate]
...
Try this:
sys.getsizeof(object)
getsizeof() calls the object’s __sizeof__ method and adds an additional garbage collector overhead if the object is managed by the garbage collector.
A recursive recipe
share
...
Are the days of passing const std::string & as a parameter over?
...
@ildjarn: In order analysis, if the worst case of something is bound by a constant, then it's still constant time. Is there not a longest small string? Doesn't that string take some constant amount of time to copy? Don't all smaller st...
How to access app.config in a blueprint?
...horisation.py which in a package api. I am initializing the blueprint in __init__.py which is used in authorisation.py .
...