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Capture keyboardinterrupt in Python without try-except
...and wait forever using a threading.Event:
import signal
import sys
import time
import threading
def signal_handler(signal, frame):
print('You pressed Ctrl+C!')
sys.exit(0)
signal.signal(signal.SIGINT, signal_handler)
print('Press Ctrl+C')
forever = threading.Event()
forever.wait()
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smart pointers (boost) explained
... that only one smart pointer can ever point to the same object at the same time. If the smart pointer is to be returned from functions, the ownership is transferred to the returned smart pointer, for example.
The third means that multiple smart pointers can point to the same object at the same tim...
Unmangling the result of std::type_info::name
... my previous comment but I cannot edit that. What I wanted to write: "Last time I checked abi::__cxa_demangle expected it to be allocated on the heap." Thank you very much for looking up the doc!
– Ali
Aug 29 '12 at 19:05
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Good way of getting the user's location in Android
...etting the user's current location within a threshold ASAP and at the same time conserve battery.
10 Answers
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Android error: Failed to install *.apk on device *: timeout
I'm getting this error from time to time and don't know what causing this:
When trying to run/debug an Android app on a real device (Galaxy Samsung S in my case) I'm getting the following error in the Console:
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sed in-place flag that works both on Mac (BSD) and Linux
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Note that -i and -i'' are identical at shell parsing time; sed can’t behave differently on those two first invocations, because it gets the exact same arguments.
– wchargin
Jun 4 '19 at 21:07
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Turn a string into a valid filename?
... valid_chars = frozenset(valid_chars) wouldn't hurt. It is 1.5 times faster if applied to allchars.
– jfs
Nov 17 '08 at 11:14
2
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Convert columns to string in Pandas
... to_json() probably does not call astype(str) as it leaves datetime64 and its subclasses as milliseconds since epoch.
– Sussch
Jul 10 '19 at 5:41
1
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jQuery animate backgroundColor
...ers. The color plugin has issues with Safari and Chrome. It only works sometimes.
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How to extract the n-th elements from a list of tuples?
...[x[1] for x in elements]'
method2 = 'map(itemgetter(1), elements)'
import timeit
t = timeit.Timer(method1, setup)
print('Method 1: ' + str(t.timeit(100)))
t = timeit.Timer(method2, setup)
print('Method 2: ' + str(t.timeit(100)))
Results:
Method 1: 1.25699996948
Method 2: 1.46600008011
If you ...