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Check OS version in Swift?
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405
For iOS, try:
var systemVersion = UIDevice.current.systemVersion
For OS X, try:
var s...
What is the difference between old style and new style classes in Python?
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None of these differences sound like compelling reasons to use new-style classes, yet everyone says you should always use the new-style. I...
How do you detect where two line segments intersect? [closed]
...ines in three-space" by Ronald Goldman, published in Graphics Gems, page 304. In three dimensions, the usual case is that the lines are skew (neither parallel nor intersecting) in which case the method gives the points of closest approach of the two lines.
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Getting SyntaxError for print with keyword argument end=' '
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14 Answers
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Reset C int array to zero : the fastest way?
...'s comment: this guarantee was added to 6.2.6.2/5 in plain text in TC2 (2004) ; however if there are no padding bits then 6.2.6.2/1 and /2 already guaranteed that all-bits-zero was 0. (With padding bits the possibility exists that all-bits-zero could be a trap representation). But in any case, the ...
Can you test google analytics on a localhost address?
...ayneBenSwayne
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5
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What is the difference between shallow copy, deepcopy and normal assignment operation?
...inal.
Here's a little demonstration:
import copy
a = [1, 2, 3]
b = [4, 5, 6]
c = [a, b]
Using normal assignment operatings to copy:
d = c
print id(c) == id(d) # True - d is the same object as c
print id(c[0]) == id(d[0]) # True - d[0] is the same object as c[0]
Using a shall...
How do you get assembler output from C/C++ source in gcc?
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433
Use the -S option to gcc (or g++).
gcc -S helloworld.c
This will run the preprocessor (cpp)...
What is the difference between 'my' and 'our' in Perl?
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Cyclic3
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answered May 20 '09 at 2:22
Fran CorpierFran Corpier
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Create a “with” block on several context managers? [duplicate]
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354
In Python 2.7 and 3.1 and above, you can write:
with A() as X, B() as Y, C() as Z:
do_somet...