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Are there benefits of passing by pointer over passing by reference in C++?
...d like that since you cannot take the address of a temporary.
Last but not least, references are easier to use -> less chance for bugs.
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foll...
Pass all variables from one shell script to another?
...re complex data which you could not express as an environment variable (at least without some heavy lifting on your part), like arrays or associative arrays.
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Build a Basic Python Iterator
...ding to the docs, must return a new iterator, but returning self works (at least in CPython)); and the getitem iteratable (uc_getitem) must have the __len__ magic method:
# for uc_iter we add __reversed__ and update __next__
def __reversed__(self):
self.index = -1
return sel...
How to print out the contents of a vector?
...ight be) and because it never gets a mention and it might be useful to, at least, know of it.
– Zorawar
Jul 24 '12 at 20:53
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Simple Digit Recognition OCR in OpenCV-Python
...as not worried about accuracy or performance, I just wanted it to work, at least with the least accuracy)
I took below image for my training data:
( I know the amount of training data is less. But, since all letters are of same font and size, I decided to try on this).
To prepare the data for t...
Is pass-by-value a reasonable default in C++11?
...e best precondition for an optimizer to create fastest code - in theory at least and if not in reality then in a few years reality.
Performance considerations are very often overrated in the context of parameter passing. Perfect forwarding is an example. Functions like emplace_back are mostly very ...
Rename specific column(s) in pandas
...
There are at least five different ways to rename specific columns in pandas, and I have listed them below along with links to the original answers. I also timed these methods and found them to perform about the same (though YMMV depending...
What is the optimal Jewish toenail cutting algorithm?
...le:
#seq is only valid when consecutive elements in the list differ by at least two.
def isValid(seq):
for i in range(len(seq)-1):
a = seq[i]
b = seq[i+1]
if abs(a-b) == 1:
return False
return True
from itertools import ifilter, permutations
validseqs =...
Does use of final keyword in Java improve the performance?
...iable x.
This prooves that final variables have impact on performances, at least for this simple case.
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application/x-www-form-urlencoded or multipart/form-data?
...
READ AT LEAST THE FIRST PARA HERE!
I know this is 3 years too late, but Matt's (accepted) answer is incomplete and will eventually get you into trouble. The key here is that, if you choose to use multipart/form-data, the boundary mu...