大约有 30,000 项符合查询结果(耗时:0.0597秒) [XML]
How to log cron jobs?
... in
/var/log/syslog, as already mentioned by @Matthew Lock.
The logging of errors AFTER the program tried to execute, which can be sent to
an email or to a file, as mentioned by @Spliffster. I prefer logging
to a file, because with email THEN you have a NEW source of
problems, and its checking if em...
Why does “return list.sort()” return None, not the list?
....sort() NOT sorted() on the list afterwards, since this generates the same error l = ['1']; l = sorted(l.append('2')) (I just added semi-colon so you could cut/paste and run)
– JGFMK
May 30 '18 at 9:54
...
Are static class variables possible in Python?
... the value of the class attribute using x instance
assert x.i == Test.i # ERROR
assert Test.i == 3 # Test.i was not affected
assert x.i == 12 # x.i is a different object than Test.i
This is because the line x.i = 12 has added a new instance attribute i to x instead of changing the value o...
What does the 'L' in front a string mean in C++?
...|
edited Jun 17 '11 at 10:05
answered Jun 17 '11 at 9:57
ka...
Extract subset of key-value pairs from Python dictionary object?
...rations are doing a different thing to the last two, and will result in an error if key doesn't exist in bigdict.
– naught101
Jun 19 at 1:56
1
...
Add list to set?
... |
edited Jan 17 '19 at 2:05
Boris
4,70255 gold badges4242 silver badges5252 bronze badges
answered Aug ...
How do I measure separate CPU core usage for a process?
...${pids[@]}"; do
if [ ! -e /proc/$pid ]; then
echo "Error: pid $pid doesn't exist"
exit 1
fi
done
while [ true ]; do
echo -e "\033[H\033[J"
for pid in "${pids[@]}"; do
ps -p $pid -L -o pid,tid,psr,pcpu,comm=
done...
Fast way of counting non-zero bits in positive integer
...
b'\x01\x02\x02\x03\x02\x03\x03\x04\x02\x03\x03\x04\x03\x04\x04\x05'
b'\x01\x02\x02\x03\x02\x03\x03\x04\x02\x03\x03\x04\x03\x04\x04\x05'
b'\x02\x03\x03\x04\x03\x04\x04\x05\x03\x04\x04\x05\x04\x05\x05\x06'
b'\x01\x02\x02\x03\x02\x03\x03\x04\x02\x03\x03\x04\x03\...
Eclipse count lines of code
...ou need a view for real-time metrics violations, like compiler warnings or errors. You also need a reporting functionality to create reports for your boss. The plugin I described above is for reporting because you have to export the metrics when you want to see them.
...
Assignment inside lambda expression in Python
...was shown :)
– jno
Jan 31 '13 at 16:05
...
