大约有 482 项符合查询结果（耗时：0.0186秒） [XML]
Is a `=default` move constructor equivalent to a member-wise move constructor?
...copy will be used for both members: http://coliru.stacked-crooked.com/a/171fd0ce335327cd - prints:
movable::copy
nonmovable::copy
So probably putting =default everywhere still makes sense. It doesn't mean that your move expressions will always move, but it makes chances of this higher.
One more ...
lenses, fclabels, data-accessor - which library for structure access and mutation is better
...-accessor) and provide a slightly more efficient implementation, data-lens-fd provides the functionality for working with MonadState for those willing to step outside of Haskell 98, and the template-haskell machinery is now available via data-lens-template.
Update 6/28/2012: Other Lens Implementati...
How do you convert a byte array to a hexadecimal string, and vice versa?
..., "F1", "F2", "F3", "F4", "F5", "F6", "F7", "F8", "F9", "FA", "FB", "FC", "FD", "FE", "FF",
};
StringBuilder result = new StringBuilder(bytes.Length * 2);
foreach (byte b in bytes) {
result.Append(hexStringTable[b]);
}
return result.ToString();
}
Update (2010-01-13)
Ad...
TCP 的那些事儿（下） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...，需要根据每个应用自己的特点来关闭）
setsockopt(sock_fd, IPPROTO_TCP, TCP_NODELAY, (char *)&value,sizeof(int));
另外，网上有些文章说TCP_CORK的socket option是也关闭Nagle算法，这个还不够准确。TCP_CORK是禁止小包发送，而Nagle算法没有禁止小...
Please explain the exec() function and its family
..._WRONLY);
pid_t fk = fork();
if (!fk) { /* in child */
dup2(X, 1); /* fd 1 is standard output,
so this makes standard out refer to the same file as X */
close(X);
/* I'm using execl here rather than exec because
it's easier to type the arguments. */
execl...
How to write WinForms code that auto-scales to system font and dpi settings?
...ompatibility -->
<supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}" />
</application>
</compatibility>
Next, add an app.config and declare the app Per Monitor Aware. This is NOW done in app.config and NOT in the manifest like before!
<System.Windows.Forms...
Why is “while ( !feof (file) )” always wrong?
...t * p = buf;
ssize_t n = bufsize;
for (ssize_t k = bufsize; (k = write(fd, p, n)) > 0; p += k, n -= k) {}
if (n != 0) { /* error, failed to write complete buffer */ }
The result we use here is k, the number of bytes written. The point here is that we can only know how many bytes were wri...
How can I exclude all “permission denied” messages from “find”?
...ot "/" , you will probably see output somethings like:
find: /./proc/1731/fdinfo: Permission denied
find: /./proc/2032/task/2032/fd: Permission denied
It's because of permission. To solve this:
You can use sudo command:
sudo find /. -name 'toBeSearched.file'
It asks super user's password, ...
How to create a self-signed certificate for a domain name for development?
...'t know why this answer has so many upvotes?
– c00000fd
Sep 23 '15 at 20:41
25
This gets upvotes ...
How to automatically generate a stacktrace when my program crashes
... stderr
fprintf(stderr, "Error: signal %d:\n", sig);
backtrace_symbols_fd(array, size, STDERR_FILENO);
exit(1);
}
void baz() {
int *foo = (int*)-1; // make a bad pointer
printf("%d\n", *foo); // causes segfault
}
void bar() { baz(); }
void foo() { bar(); }
int main(int argc, char ...