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How do you remove duplicates from a list whilst preserving order?
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Which iOS app version/build number(s) MUST be incremented upon App Store release?
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Apple Technical Note TN2420, Version Numbers and Build Numbers
Summary:
The pair (Version, Build number) must be unique.
The sequence is valid: (1.0.1, 12) -> (1.0.1, 13) -> (1.0.2, 13) -> (1.0.2, 14) ...
Version (CFBundleShortVersi...
decorators in the python standard lib (@deprecated specifically)
... category=DeprecationWarning,
stacklevel=2)
warnings.simplefilter('default', DeprecationWarning) # reset filter
return func(*args, **kwargs)
return new_func
# Examples
@deprecated
def some_old_function(x, y):
return x + y
class SomeClass:...
What's the best way to inverse sort in scala?
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There may be the obvious way of changing the sign, if you sort by some numeric value
list.sor...
How to sort objects by multiple keys in Python?
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This answer works for any kind of column in the dictionary -- the negated column need not be a n...
How to discover number of *logical* cores on Mac OS X?
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812
You can do this using the sysctl utility:
sysctl -n hw.ncpu
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What's the difference between “mod” and “remainder”?
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There is a difference between modulus and remainder. For example:
-21 mod 4 is 3 because -21 + 4 x 6 is 3.
But -21 divided by 4 gives -5 with a remainder of -1.
For positive values, there is no difference.
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Saving utf-8 texts in json.dumps as UTF8, not as \u escape sequence
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12 Answers
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Approximate cost to access various caches and main memory?
Can anyone give me the approximate time (in nanoseconds) to access L1, L2 and L3 caches, as well as main memory on Intel i7 processors?
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Extracting numbers from vectors of strings
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answered Jan 27 '13 at 1:51
ArunArun
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