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Equation for testing if a point is inside a circle
...implemented this method in c, and compiled with -O3.
I obtained execution times by time ./a.out
I implemented this method, a normal method and a dummy method to determine timing overhead.
Normal: 21.3s
This: 19.1s
Overhead: 16.5s
So, it seems this method is more efficient in this implementation....
Python: try statement in a single line
...of us actually love. Having to check the return code of an operation every time and having a hard time tracking down errors if I don't is something I definitely don't miss about C when writing Python. In any event, though it's been discussed, there is no one-line syntax for a try/except block. Lucki...
Performance of Java matrix math libraries? [closed]
We are computing something whose runtime is bound by matrix operations. (Some details below if interested.) This experience prompted the following question:
...
Is there a Python equivalent to Ruby's string interpolation?
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@d33tah: No, as long as the strings are known at compile time.
– Clément
Dec 8 '16 at 0:59
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Google Docs/Drive - number the headings
...effered name
Select Run > onOpen and authorize the script for the first time
Select Run > onOpen
Change to your Document and try the functions on the Headings tools custom menu created.
~~Disclaimer: you may have issues with empty Headings.. But you can always fix them and run action again.~...
Scala how can I count the number of occurrences in a list
...
but it yields the num. occurrences for each value as many times as the value occurs—seems inefficient and not very useful...
– Erik Kaplun
Sep 13 '13 at 20:15
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C++, What does the colon after a constructor mean? [duplicate]
...al)
{
}
private:
const int& m_val;
};
That is the only time that you can change a const member variable. And as Michael noted in the comments section, it is also the only way to initialise a reference that is a class member.
Outside of using it to initialise const member variabl...
Why aren't programs written in Assembly more often? [closed]
... a good job. Agree with you though otherwise.
– old_timer
Apr 21 '10 at 18:08
4
@dwelch It is in...
How do I replace NA values with zeros in an R dataframe?
...set.nms(copy(dfN)),
DT.for.set.sqln = DT.for.set.sqln(copy(dfN)),
times = 600L
)
Summary of Results
> print(perf_results)
Unit: milliseconds
expr min lq mean median uq max neval
hybrd.ifelse 6171.0439 6339.7046 6425.221 6407.397 6496....
Difference between >>> and >>
...unsigned, but why does 7>>32=7? I ran a loop that did one shift at a time and saw that after 32 shifts, it came back to 7. The only way that this could make sense is that for each number shifted out, it entered an "outer circle." After 32 shifts, it reached somehow back to it's position, but o...