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How to repeat a string a variable number of times in C++?
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Use one of the forms of string::insert:
std::string str("lolcat");
str.insert(0, 5, '.');
This will insert "....." (five dots) at the start of the string (position 0).
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How to bind inverse boolean properties in WPF?
...r composition and presenting a specialized ViewModel of your entity to the form.
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Converting XML to JSON using Python?
...up as JSON which allows it to be losslessly converted back to its original form. See http://jsonml.org/.
It's a kind of XSLT of JSON. I hope you find it helpful
Python - use list as function parameters
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$window.unbind('scroll', onScroll);
}
};
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A good example for boost::algorithm::join
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$window.unbind('scroll', onScroll);
}
};
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Shell command to sum integers, one per line?
...1} END {print s}' mydatafile # DO NOT USE THIS!!
that is because in this form awk uses a 32 bit signed integer representation: it will overflow for sums that exceed 2147483647 (i.e., 2^31).
A more general answer (for summing integers) would be:
awk '{s+=$1} END {printf "%.0f\n", s}' mydatafile #...
How to tag an older commit in Git?
... date of the HEAD commit, and add the tag
GIT_COMMITTER_DATE="$(git show --format=%aD | head -1)" \
git tag -a v1.2 -m"v1.2"
# set HEAD back to whatever you want it to be
git checkout master
Details
The answer by @dkinzer creates tags whose date is the current date (when you ran the git tag comman...
Examples of Algorithms which has O(1), O(n log n) and O(log n) complexities
...en mean the length of input on a Turing machine tape--which makes vertical form of division take exponential time to implement. :-) Each domain has its own requirements and its own precinct of abstracting.
– P Shved
Oct 20 '09 at 5:54
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Best way to extract a subvector from a vector?
...o get a span of 1000 elements of the same type as myvec's. Or a more terse form:
auto my_subspan = gsl::make_span(myvec).subspan(1000000, 1000);
(but I don't like this as much, since the meaning of each numeric argument is not entirely clear; and it gets worse if the length and start_pos are of the...
Xcode 6 Storyboard the wrong size?
...d be the correct answer (at least for those only work on non-Universal platform)
– Raptor
Sep 23 '14 at 3:21
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