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Which equals operator (== vs ===) should be used in JavaScript comparisons?
...ntirely and just don't use the String constructor to create string objects from string literals.
Reference
http://www.ecma-international.org/ecma-262/5.1/#sec-11.9.3
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Why is processing a sorted array faster than processing an unsorted array?
...less.
Further reading: "Branch predictor" article on Wikipedia.
As hinted from above, the culprit is this if-statement:
if (data[c] >= 128)
sum += data[c];
Notice that the data is evenly distributed between 0 and 255. When the data is sorted, roughly the first half of the iterations will no...
What is the purpose of a self executing function in javascript?
...ght solve our problem. Everything is now enclosed and can only be accessed from within our opening and closing braces.
We have a function in a function... which is weird to look at, but totally legal.
Only one problem. Our code doesn't work.
Our userName variable is never echoed into the console! ...
How to add dividers and spaces between items in RecyclerView?
...lication to add a special drawing and layout offset to specific item views from the adapter's data set. This can be useful for drawing dividers between items, highlights, visual grouping boundaries and more.
All ItemDecorations are drawn in the order they were added, before the item views (in onDraw...
Should I put #! (shebang) in Python scripts, and what form should it take?
...thon 2 and Python 3. Otherwise, it should point to the appropriate choice from python2 and python3.
– amiller27
Jan 19 '17 at 3:50
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C++ unordered_map using a custom class type as the key
...p; third == other.third);
}
};
Here is a simple hash function (adapted from the one used in the cppreference example for user-defined hash functions):
namespace std {
template <>
struct hash<Key>
{
std::size_t operator()(const Key& k) const
{
using std::size...
How to initialise memory with new operator in C++?
...(int i = 0; i < 10; i++)
{
p[i] = 0;
}
Using std::memset function from <cstring>
int* p = new int[10];
std::memset(p, 0, sizeof(int) * 10);
Using std::fill_n algorithm from <algorithm>
int* p = new int[10];
std::fill_n(p, 10, 0);
Using std::vector container
std::vector<...
Access data in package subdirectory
... Brilliant suggestion, thanks. I implemented a standard file open using from pkg_resources import resource_filename open(resource_filename('data', 'data.txt'), 'rb')
– eageranalyst
Feb 26 '14 at 23:32
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How to get the list of files in a directory in a shell script?
...lain me a bit? In particular what is the -i echo "{}" part do? Also I read from the man page that -i is deprecated now and we should use -I insted.
– drkg4b
Oct 5 '15 at 17:27
1
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Fast way to get image dimensions (not filesize)
...ions also PPM, WEBP), and does only read the header.
The identify command (from ImageMagick) prints lots of image information for a wide variety of images. It seems to restrain itself to reading the header portion (see comments). It also has a unified output which file sadly lacks.
exiv2 gives you d...