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Efficient evaluation of a function at every cell of a NumPy array
... it:
import numpy as np
def f(x):
return x * x + 3 * x - 2 if x > 0 else x * 5 + 8
f = np.vectorize(f) # or use a different name if you want to keep the original f
result_array = f(A) # if A is your Numpy array
It's probably better to specify an explicit output type directly when vect...
In C#, can a class inherit from another class and an interface?
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edited Dec 19 '13 at 23:10
Zain Rizvi
20.7k1717 gold badges7878 silver badges119119 bronze badges
answe...
What is the meaning of the term arena in relation to memory?
... For example:
char * arena = malloc(HUGE_NUMBER);
unsigned int current = 0;
void * my_malloc(size_t n) { current += n; return arena + current - n; }
The point is that you get full control over how the memory allocation works. The only thing outside your control is the single library call for th...
How can I pass command-line arguments to a Perl program?
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190
Depends on what you want to do. If you want to use the two arguments as input files, you can jus...
Why am I getting an Exception with the message “Invalid setup on a non-virtual (overridable in VB) m
...erlying interface.
– Paul Raff
Aug 30 '15 at 15:18
1
Not only does this solve the problem but it'...
What is the difference between parseInt() and Number()?
...
10 Answers
10
Active
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What makes JNI calls slow?
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+50
First, it's worth noting that by "slow," we're talking about something that can take tens of nanoseconds. For trivial native methods, ...
JQuery .on() method with multiple event handlers to one selector
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+50
That's the other way around. You should write:
$("table.planning_grid").on({
mouseenter: function() {
// Handle mouseente...
How can I discover the “path” of an embedded resource?
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edited Sep 15 '10 at 7:16
answered Aug 26 '08 at 11:21
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