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Is MATLAB OOP slow or am I doing something wrong?
..., and there's not much you can do about it. Part of the reason may be that idiomatic MATLAB uses "vectorized" code to reduce the number of method calls, and per-call overhead is not a high priority.
I benchmarked the performance by writing do-nothing "nop" functions as the various types of function...
Using Java with Nvidia GPUs (CUDA)
...and thus like it was well-suited for a GPU, there is another aspect to consider: GPUs are ridiculously fast in terms of theoretical computational power (FLOPS, Floating Point Operations Per Second). But they are often throttled down by the memory bandwidth.
This leads to another classification of p...
Which timestamp type should I choose in a PostgreSQL database?
...dvice to use TIMESTAMP WITH TIME ZONE for lightweight applications. That said, let me explain some background aspects of this this Option 4 in more detail.
Like Option 3, the reason for the WITH TIME ZONE is because the time at which something happened is an absolute moment in time. WITHOUT TIME ZO...
How to set a Header field on POST a form?
... values ready for POST.
UPDATE
My suggestion is to include either
a hidden form element
a query string parameter
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Does pandas iterrows have performance issues?
... is handled internally by pandas, though it depends on what is going on inside the apply expression. For example, df.apply(lambda x: np.sum(x)) will be executed pretty swiftly, though of course, df.sum(1) is even better. However something like df.apply(lambda x: x['b'] + 1) will be executed in Pytho...
How do I make JavaScript beep?
...ript>
function PlaySound(soundObj) {
var sound = document.getElementById(soundObj);
sound.Play();
}
</script>
<embed src="success.wav" autostart="false" width="0" height="0" id="sound1"
enablejavascript="true">
You would then call it from JavaScript code as such:
PlaySound("so...
Extreme wait-time when taking a SQL Server database offline
...who is keeping a lock on your database:
EXEC sp_who2
And use whatever SPID you find in the following command:
KILL <SPID>
Then run the ALTER DATABASE command again. It should now work.
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u'\ufeff' in Python string
...ning of the code automatically (which is not shown by the text editors) to identify the encoding format. But, when you try to execute the code it gives you the syntax error in line 1 i.e, start of code because python compiler understands ASCII encoding.
when you view the code of file using read() fu...
What does “dereferencing” a pointer mean?
...t's (current) value - I focus below on C and C++.
A pointer scenario
Consider in C, given a pointer such as p below...
const char* p = "abc";
...four bytes with the numerical values used to encode the letters 'a', 'b', 'c', and a 0 byte to denote the end of the textual data, are stored somewher...
How to install multiple python packages at once using pip
I know it's an easy way of doing it but i didn't find it neither here nor on google.
So i was curious if there is a way to install multiple packages using pip.
Something like:
...