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Efficient evaluation of a function at every cell of a NumPy array
...y each time you need 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 typ...
Why does C# have break if it's not optional? [duplicate]
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Alex K.Alex K.
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1
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How can I set focus on an element in an HTML form using JavaScript?
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answered Jul 6 '13 at 7:21
mohkhanmohkhan
10.7k22 gold badges1919 silver badges2626 bronze badges
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How to commit my current changes to a different branch in Git [duplicate]
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3 Answers
3
Active
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How would one write object-oriented code in C? [closed]
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32 Answers
32
Active
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Delete all lines beginning with a # from a file
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316
This can be done with a sed one-liner:
sed '/^#/d'
This says, "find all lines that start wi...
Exotic architectures the standards committees care about
...people who have not yet migrated all their Univac software.
Key points:
36-bit words
CHAR_BIT == 9
one's complement
72-bit non-IEEE floating point
separate address space for code and data
word-addressed
no dedicated stack pointer
Don't know if they offer a C++ compiler though, but they could.
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How to remove Firefox's dotted outline on BUTTONS as well as links?
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803
button::-moz-focus-inner {
border: 0;
}
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Block Comments in a Shell Script
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356
In bash:
#!/bin/bash
echo before comment
: <<'END'
bla bla
blurfl
END
echo after commen...
getting the last item in a javascript object
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answered Nov 30 '10 at 19:08
AlexAlex
56.5k4545 gold badges143143 silver badges174174 bronze badges
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