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mongoDB/mongoose: unique if not null
...types.html
– damphat
Oct 21 '13 at 10:15
I don't think this answers the question correctly, as a few documents without...
Why are Standard iterator ranges [begin, end) instead of [begin, end]?
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+50
The best argument easily is the one made by Dijkstra himself:
You want the size of the range to be a simple difference end − beg...
Change bootstrap navbar collapse breakpoint without using LESS
...8px, the navbar changes to collapsed mode. I want to change this width to 1000px so when the browser is below 1000px the navbar changes to collapsed mode. I want to do this without using LESS, I am using stylus not LESS.
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How can I quantify difference between two images?
... img2 = to_grayscale(imread(file2).astype(float))
# compare
n_m, n_0 = compare_images(img1, img2)
print "Manhattan norm:", n_m, "/ per pixel:", n_m/img1.size
print "Zero norm:", n_0, "/ per pixel:", n_0*1.0/img1.size
How to compare. img1 and img2 are 2D SciPy arrays here:
def comp...
Difference between >>> and >>
...ss of the number.
For example: -2 represented in 8 bits would be 11111110 (because the most significant bit has negative weight). Shifting it right one bit using arithmetic shift would give you 11111111, or -1. Logical right shift, however, does not care that the value could possibly represent ...
Preferred Github workflow for updating a pull request after code review
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answered Oct 30 '11 at 19:45
AmberAmber
421k7070 gold badges575575 silver badges516516 bronze badges
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Is it intended by the C++ standards committee that in C++11 unordered_map destroys what it inserts?
...curious, I took a look at the g++-4.8 headers.
bits/stl_map.h, lines 598-603
template<typename _Pair, typename = typename
std::enable_if<std::is_constructible<value_type,
_Pair&&>::value>::type>
std::pair<...
What is Full Text Search vs LIKE
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170
In general, there is a tradeoff between "precision" and "recall". High precision means that fewe...
What exactly is Hot Module Replacement in Webpack?
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answered Jul 5 '14 at 15:09
Tobias K.Tobias K.
10.8k44 gold badges2222 silver badges2525 bronze badges
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