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What does “dereferencing” a pointer mean?
...hat can be written to, then you can do things like this:
int x = 2;
int* p_x = &x; // Put the address of the x variable into the pointer p_x
*p_x = 4; // Change the memory at the address in p_x to be 4
assert(x == 4); // Check x is now 4
Above, you must have known at compile time that ...
How do I convert seconds to hours, minutes and seconds?
...this: stackoverflow.com/questions/7999935/…
– eric_kernfeld
Oct 10 '18 at 15:40
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“No such file or directory” error when executing a binary
I was installing a binary Linux application on Ubuntu 9.10 x86_64. The app shipped with an old version of gzip (1.2.4), that was compiled for a much older kernel:
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Read only file system on Android
... Doesn't work for me: Balazss-MBP:tools varh1i$ adb shell generic_x86_64:/ # mount -o rw,remount /system '/dev/block/vda' is read-only
– Balazs Varhegyi
Feb 8 '17 at 13:58
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What did MongoDB not being ACID compliant before v4 really mean?
...ent.
If you need to remove an item from inventory and add it to someone's order at the same time - you can't. Unless those two things - inventory and orders - exist in the same document (which they probably do not).
I encountered this very same issue in an application I am working on and had two ...
Why doesn't os.path.join() work in this case?
... some kind of a reference point like
os.environ['HOME'] or os.path.dirname(__file__).
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What is the difference between range and xrange functions in Python 2.X?
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xrange(x).__iter__() is a generator.
– augustomen
Aug 13 '13 at 14:28
36
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Python strftime - date without leading 0?
...omment until now. It turns out that datetime specifies a very interesting __format__ hook that allows you to write things like that.
– mgilson
Dec 4 '14 at 0:26
2
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Best way to parse command-line parameters? [closed]
...=>
c.copy(libName = k, maxCount = v) } validate { x =>
if (x._2 > 0) success
else failure("Value <max> must be >0")
} keyValueName("<libname>", "<max>") text("maximum count for <libname>")
opt[Unit]("verbose") action { (_, c) =>
c.copy(ver...
How to profile a bash shell script slow startup?
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PS4='+ $EPOCHREALTIME\011 '
As pointed out by @pawamoy, you can use BASH_XTRACEFD to send the output of the trace to a separate file descriptor if you have Bash 4.1 or later. From this answer:
#!/bin/bash
exec 5> command.txt
BASH_XTRACEFD="5"
echo -n "hello "
set -x
echo -n world
set +x
e...