大约有 40,000 项符合查询结果（耗时：0.0371秒） [XML]
When to use std::forward to forward arguments?
...;, so you always end up with the correct type inside the function body. Finally, you need forward to turn the lvalue-turned x (because it has a name now!) back into an rvalue reference if it was one initially.
You should not forward something more than once however, because that usually does not ma...
Encrypt Password in Configuration Files? [closed]
...simple way of doing this is to use Password Based Encryption in Java. This allows you to encrypt and decrypt a text by using a password.
This basically means initializing a javax.crypto.Cipher with algorithm "AES/CBC/PKCS5Padding" and getting a key from javax.crypto.SecretKeyFactory with the "PBKDF...
Determining the current foreground application from a background task or service
...ound is."
Do NOT use the getRunningAppProcesses() method as this returns all sorts of system rubbish from my experience and you'll get multiple results which have RunningAppProcessInfo.IMPORTANCE_FOREGROUND. Use getRunningTasks() instead
This is the code I use in my service to identify the curre...
printf() formatting for hex
...t question, but why when printing hex as an 8 digit number with leading zeros, does this %#08X Not display the same result as 0x%08X ?
...
Do HTML WebSockets maintain an open connection for each client? Does this scale?
.../HTML requests. However, that doesn't mean WebSockets is a replacement for all uses of AJAX/HTML.
Each TCP connection in itself consumes very little in terms server resources. Often setting up the connection can be expensive but maintaining an idle connection it is almost free. The first limitation...
How to check if a string contains an element from a list in Python
...y strings in a list are found in another string, keep in mind that this is all that this solution does. It does not care WHERE the string is found e.g. in the ending of the string. If this is important, as is often the case with urls, you should look to the answer of @Wladimir Palant, or you risk ge...
Difference between static STATIC_URL and STATIC_ROOT on Django
...example.com/static/"
now the command ./manage.py collectstatic will copy all the static files(ie in static folder in your apps, static files in all paths) to the directory /var/www/example.com/static/. now you only need to serve this directory on apache or nginx..etc.
STATIC_URL
The URL of w...
git-diff to ignore ^M
...iles:
# Remove everything from the index
$ git rm --cached -r .
# Re-add all the deleted files to the index
# You should get lots of messages like: "warning: CRLF will be replaced by LF in <file>."
$ git diff --cached --name-only -z | xargs -0 git add
# Commit
$ git commit -m "Fix CRLF"
c...
CSS customized scroll bar in div
...ng scrollbars: https://www.webkit.org/blog/363/styling-scrollbars/
Demo of all WebKit scroll bar styling
From Custom scrollbars in WebKit, relevant CSS:
/* pseudo elements */
::-webkit-scrollbar { }
::-webkit-scrollbar-button { }
::-webkit-scrollbar-track { }
::-webkit-...
Sending email with PHP from an SMTP server
... you are sending an e-mail through a server that requires SMTP Auth, you really need to specify it, and set the host, username and password (and maybe the port if it is not the default one - 25).
For example, I usually use PHPMailer with similar settings to this ones:
$mail = new PHPMailer();
// ...