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What is more efficient? Using pow to square or just multiply it with itself?
...b)
TEST(5, b*b*b*b*b)
template <int exponent>
double testpow(double base, long loops)
{
double x = 0.0;
boost::posix_time::ptime startTime = now();
for (long i=0; i<loops; ++i)
{
x += std::pow(base, exponent);
x += std::pow(base, exponent);
x += std...
When do you use map vs flatMap in RxJava?
...uestion is When do you use map vs flatMap in RxJava?. And I think a simple demo is more specific.
When you want to convert item emitted to another type , in your case converting file to String, map and flatMap can both work. But I prefer map operator because it's more clearly.
However in some plac...
Combine Date and Time columns using python pandas
...06 22:00:00
8 2013-03-06 23:00:00
9 2013-04-06 01:00:00
dtype: datetime64[ns]
Note: surprisingly (for me), this works fine with NaNs being converted to NaT, but it is worth worrying that the conversion (perhaps using the raise argument).
...
How to set up Spark on Windows?
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@Stefan stackoverflow.com/questions/42264695/…
– Ani Menon
Apr 1 '17 at 16:01
4
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What do 'statically linked' and 'dynamically linked' mean?
...executable without you seeing their source code (such as libraries for database access, network communications and graphical user interfaces), or for compiling code in different languages (C and assembly code for example) and then linking them all together.
When you statically link a file into an e...
When should I write the keyword 'inline' for a function/method?
...
64
I'd like to contribute to all of the great answers in this thread with a convincing example to ...
What is the `data-target` attribute in Bootstrap 3?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Using HTML5/JavaScript to generate and save a file
... type etc., but e.g. Firefox 3.6.12 works until at least 256k. Encoding in Base64 instead using encodeURIComponent might make things more efficient, but for me that was ok.
3) open a new window and "redirect" it to this URI prompts for a download location of my JavaScript generated page:
newWindow...
Do htmlspecialchars and mysql_real_escape_string keep my PHP code safe from injection?
...ds FROM table WHERE id = ".(INT) $_GET['id'];
Works well, even better on 64 bit systems. Beware of your systems limitations on addressing large numbers though, but for database ids this works great 99% of the time.
You should be using a single function/method for cleaning your values as well. Eve...
Convert a String representation of a Dictionary to a dictionary?
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i get this error I am on python 2.6 (x86) on windows 7 x64 File "D:\Python26\lib\ast.py", line 48, in literal_eval node_or_string = parse(node_or_string, mode='eval') File "D:\Python26\lib\ast.py", line 36, in parse return compile(expr, filename, mode, P...