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Why use bzero over memset?
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I'm guessing you used (or your teacher was influenced by) UNIX Network Programming by W. Richard Stevens. He uses bzero frequently instead of memset, even in the most up-to-date edition. The book is so popular, I think it's become an idiom in network programming which is why you s...
Kill process by name?
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Assuming you're on a Unix-like platform (so that ps -A exists),
>>> import subprocess, signal
>>> import os
>>> p = subprocess.Popen(['ps', '-A'], stdout=subprocess.PIPE)
>>> out, err = p.communicate()
gives...
How to get start and end of day in Javascript?
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add .unix() at the end to get unix timestamp in seconds :) like this: moment().startOf('day').unix()
– Lukas Liesis
Jul 13 '17 at 18:58
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What are file descriptors, explained in simple terms?
...make your life easier. In C, stdin, stdout, and stderr are FILE*, which in UNIX respectively map to file descriptors 0, 1 and 2.
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Where does gcc look for C and C++ header files?
On a Unix system, where does gcc look for header files?
9 Answers
9
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Timeout on a function call
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You may use the signal package if you are running on UNIX:
In [1]: import signal
# Register an handler for the timeout
In [2]: def handler(signum, frame):
...: print("Forever is over!")
...: raise Exception("end of time")
...:
# This function *may* run for a...
Can you Run Xcode in Linux?
Can you run Xcode in Linux? Mac OS X was based on BSD Unix, so is it possible?
13 Answers
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How to identify platform/compiler from preprocessor macros?
...: without it, it's not msdn official!
// Windows (x64 and x86)
#elif __unix__ // all unices, not all compilers
// Unix
#elif __linux__
// linux
#elif __APPLE__
// Mac OS, not sure if this is covered by __posix__ and/or __unix__ though...
#endif
EDIT: Although the above might work f...
Calculate the date yesterday in JavaScript
...date object based on the value of "now" as an integer which represents the unix epoch in milliseconds subtracting one day.
Two days ago:
var twoDaysAgo = new Date((new Date()).valueOf() - 1000*60*60*24*2);
An hour ago:
var oneHourAgo = new Date((new Date()).valueOf() - 1000*60*60);
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PHP Sort a multidimensional array by element containing date
...time. date_compare then extracts the "datetime" field of each record as a UNIX timestamp (an integer), and returns the difference, so that the result will be 0 if both dates are equal, a positive number if the first one ($a) is larger or a negative value if the second argument ($b) is larger. usor...