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How do I safely pass objects, especially STL objects, to and from a DLL?
...ce, a standard for calling conventions, data packing/alignment, type size, etc.), you will have to jump through a lot of hoops to try and enforce a standard way of dealing with class objects in your program. There's not even a guarantee it'll work after you jump through all those hoops, nor is there...
std::enable_if to conditionally compile a member function
...
public:
typedef Goo<T, boost::test<T> > inherited:
// etc. etc.
};
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Is it ever advantageous to use 'goto' in a language that supports loops and functions? If so, why?
...tartOuter = true;
if (restartOuter) {
i = -1;
}
}
etc
etc
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How to redirect to a 404 in Rails?
...oach also lets you use the ActiveRecord bang finders (find!, find_by_...!, etc.), which all raise an ActiveRecord::RecordNotFound exception if no record is found (triggering the rescue_from handler).
– gjvis
Jun 18 '12 at 17:59
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How do I change bash history completion to complete what's already on the line?
...
You may need to enabled bash completion.
Check
/etc/profile
/etc/bash.bashrc
~/.bashrc
to see if any of the above files source /etc/bash_completion. i.e.
. /etc/bash_completion
If /etc/bash___completion is not sourced by any of the above files you will need to add i...
PHP mkdir: Permission denied problem
...er window and from the menu bar, choose Go > Go To Folder > /private/etc/apache2
now open httpd.conf
find:
User _www
Group _www
change the username:
User <YOUR LOGIN USERNAME>
Now restart apache by running this form terminal:
sudo apachectl -k restart
If it still doesn't work...
Circular list iterator in Python
...n l:
print i
all of which print:
>>>
a
b
c
d
a
b
c
d
...etc.
of the three I'd be prone to the append(pop()) approach as a function
servers = ['a','b','c','d']
def rotate_servers(servers):
servers.append(servers.pop(0))
return servers
while 1:
servers = rotate_serv...
What are the main performance differences between varchar and nvarchar SQL Server data types?
...
What about index size, memory usage etc? I assume you always use int when you could use tinyint too "just in case"?
– gbn
Jul 9 '10 at 7:02
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How to determine SSL cert expiration date from a PEM encoded certificate?
...s in order of their expiration, most recently expiring first.
for pem in /etc/ssl/certs/*.pem; do
printf '%s: %s\n' \
"$(date --date="$(openssl x509 -enddate -noout -in "$pem"|cut -d= -f 2)" --iso-8601)" \
"$pem"
done | sort
Sample output:
2015-12-16: /etc/ssl/certs/Staat_der_Ned...
c++文件流基本用法(ifstream, ostream,fstream) - C/C++ - 清泛网 - 专注C/C++及内核技术
...write函数来读写文件。可参见：
https://www.tsingfun.com/it/cpp/all_programming_language_file_read_write_summary.html#C
c++ ,文件流,ifstream, ostream,fstream