大约有 40,000 项符合查询结果（耗时：0.0811秒） [XML]
Is gcc's __attribute__((packed)) / #pragma pack unsafe?
...address as well as unaligned pointer
I've just built that version of gcc from source. For the above program, it produces these diagnostics:
c.c: In function ‘main’:
c.c:10:15: warning: taking address of packed member of ‘struct foo’ may result in an unaligned pointer value [-Waddress-of-...
How to redirect output with subprocess in Python?
...
If you really want to use subprocess, here's the solution (mostly lifted from the documentation for subprocess):
p = subprocess.Popen(my_cmd, shell=True)
os.waitpid(p.pid, 0)
OTOH, you can avoid system calls entirely:
import shutil
with open('myfile', 'w') as outfile:
for infile in ('file...
Proper usage of Java -D command-line parameters
..., what is the proper way of writing the command-line and then accessing it from code?
3 Answers
...
omp parallel vs. omp parallel for
... the clauses
allowed for the parallel and worksharing contructs.
Taken from http://www.openmp.org/mp-documents/OpenMP3.0-SummarySpec.pdf
The specs for OpenMP are here:
https://openmp.org/specifications/
share
...
How can I check if a key is pressed during the click event with jQuery?
...
You can easily detect the shift, alt and control keys from the event properties;
$("button").click(function(evt) {
if (evt.ctrlKey)
alert('Ctrl down');
if (evt.altKey)
alert('Alt down');
// ...
});
See quirksmode for more properties. If you want to detect other ...
constant pointer vs pointer on a constant value [duplicate]
...hese sit to the right of the variable name) this becomes a case of reading from right-to-left.
So with char *const a; you have a, which is a const pointer (*) to a char. In other words you can change the char which a is pointing at, but you can't make a point at anything different.
Conversely with...
Difference between Property and Field in C# 3.0+
...en a Field and a Property in C#? but my question has a slight difference (from my point of view):
10 Answers
...
Purge Kafka Topic
...room-data --config retention.ms=1000 WARNING: Altering topic configuration from this script has been deprecated and may be removed in future releases. Going forward, please use kafka-configs.sh for this functionality
– Alper Akture
Nov 18 '15 at 19:42
...
Finishing current activity from a fragment
... It contains buttons that when clicked start new activities (startActivity from a fragment simply calls startActivity on the current activity).
...
Difference between DirectCast() and CType() in VB.NET
... but otherwise it won't do any conversion. So, for example, you can't cast from short to int, like you could with a C# (int) cast. But you can cast from an IEnumerable to an array, if your underlying IEnumerable object variable really is an Array. And of course you can cast from Object to anything, ...