大约有 49,000 项符合查询结果（耗时：0.0792秒） [XML]
Keeping ASP.NET Session Open / Alive
...HttpContext context)
{
context.Session["Heartbeat"] = DateTime.Now;
}
}
The key is to add IRequiresSessionState, otherwise Session won't be available (= null). The handler can of course also return a JSON serialized object if some data should be returned to the calling JavaScript.
...
How to delete a file or folder?
..._path.mkdir()
file_path = directory_path / 'file'
file_path.touch()
and now:
>>> file_path.is_file()
True
Now let's delete them. First the file:
>>> file_path.unlink() # remove file
>>> file_path.is_file()
False
>>> file_path.exists()
False
We can use...
Decimal number regular expression, where digit after decimal is optional
...
Thanks Pete, well spotted. The answer has now been corrected, by adding extra parenthesis so it behaves as intended. It is now written like ^A?(B|C)$. Previously, it was written like ^A?B|C$ which actually means (^A?B)|(C$) which was incorrect. Note: ^(A?B|C)$ is als...
From io.Reader to string in Go
...uf.Bytes()
s := *(*string)(unsafe.Pointer(&b))
There we go, you have now efficiently converted your byte array to a string. Really, all this does is trick the type system into calling it a string. There are a couple caveats to this method:
There are no guarantees this will work in all go com...
Cross-reference (named anchor) in markdown
...XHTML, so I originally used id=, which everyone recognises. However, HTML5 now creates a global variable in JavaScript when using id=, and this may not necessarily be what you want. So, using name= is now likely to be more friendly.
(Thanks to Slipp Douglas for explaining XHTML to me, and nailer fo...
How can I iterate over an enum?
...
Except now you've actually allocated memory when an enum, provided it is zero-indexed and strictly continous, can do that task without allocating memory.
– Cloud
Jan 17 '14 at 23:02
...
Disable password authentication for SSH [closed]
...n yes
to
ChallengeResponseAuthentication no
PasswordAuthentication no
Now generate the RSA key:
ssh-keygen -t rsa -P '' -f ~/.ssh/id_rsa
(For me an RSA key worked. A DSA key did not work.)
A private key will be generated in ~/.ssh/id_rsa along with ~/.ssh/id_rsa.pub (public key).
Now move ...
How to securely store access token and secret in Android?
...instead of the actual username password:
Third party apps don't need to know the password and the user can be sure that they only send it to the original site (Facebook, Twitter, Gmail, etc.)
Even if someone steals a token, they don't get to see the password (which the user might be using on other...
smart pointers (boost) explained
...> q(p); // not legal!
unique_ptr<type> r(move(p)); // legal. p is now empty, but r owns the object
unique_ptr<type> s(function_returning_a_unique_ptr()); // legal!
This is the semantic that std::auto_ptr obeys, but because of missing native support for moving, it fails to provide th...
Why can't the C# constructor infer type?
...d.
This feature has been on the list of possible features for a long time now. It's never been anywhere near high enough on the list to actually get implemented.
UPDATE March 2015
The proposed feature made it close enough to the top of the list for C# 6 to be specified and designed, but was then ...