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std::vector versus std::array in C++
...tically shifting the rest of the elements down.
...allows you to perform a range-checked read with the at() method (you can always use the indexers [] if you don't want this check to be performed).
There are two three main caveats to using std::vector<T>:
You don't have reliable access to ...
Is multiplication and division using shift operators in C actually faster?
...ation may help even without fixing the code, but that's not guaranteed.
Strange bitshifting code implementing multiplication or division is far less expressive of what you were conceptually trying to achieve, so other developers will be confused by that, and a confused programmer's more likely to i...
What are the most widely used C++ vector/matrix math/linear algebra libraries, and their cost and be
...omes from, and no Q matrix can be accessed.
Armadillo
Advantages:
1. Wide range of decompositions and other functions (including QR).
2. Reasonably fast (uses expression templates), but again, I haven't really pushed it to high dimensions.
Disadvantages:
1. Depends on external BLAS and/or LAPACK f...
Speed comparison with Project Euler: C vs Python vs Erlang vs Haskell
...t(square)
count = -1 if isquare == square else 0
for candidate in xrange(1, isquare + 1):
if not n % candidate: count += 2
return count
def main(argv):
triangle = 1
index = 1
while factorCount(triangle) < 1001:
index += 1
triangle += index
prin...
How do I determine the size of an object in Python?
...pping, deque
try: # Python 2
zero_depth_bases = (basestring, Number, xrange, bytearray)
iteritems = 'iteritems'
except NameError: # Python 3
zero_depth_bases = (str, bytes, Number, range, bytearray)
iteritems = 'items'
def getsize(obj_0):
"""Recursively iterate to sum size of o...
Learning assembly [closed]
...ng to try their hand at, and hopefully learn something along the way. They range in difficulty from basic (start here!) to impossible.
Above all, you just need to practice. As in many other disciplines, with reverse engineering, practice makes perfect... or at least better.
...
Loop through an array in JavaScript
...an array, you have a question to answer: do you want to loop over the full range indicated by its length and process undefineds for any missing elements, or do you only want to process the elements actually present? There are plenty of applications for both approaches; it just depends on what you're...
Why does my application spend 24% of its life doing a null check?
...
deep explanatory with wide range of related information, as usual. +1
– Tigran
May 21 '13 at 18:59
1
...
How to parse/format dates with LocalDateTime? (Java 8)
...For instance, the historical Japanese calendars were derived from the time ranges of the reign of the respective emperor or dynasty. Then there is e.g. UNIX timestamp.
Fortunately, the whole (business) world managed to use the same.
Historically, the systems were being switched from/to, for various ...
Log all requests from the python-requests module
...
Strangely enough, I do not see the access_token in the OAuth request. Linkedin is complaining about unauthorized request, and I want to verify whether the library that I am using (rauth on top of requests) is sending that token...