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What is the copy-and-swap idiom?
...y that, but unqualified calls to swap will use our custom swap operator, skipping over the unnecessary construction and destruction of our class that std::swap would entail.)
An in-depth explanation
The goal
Let's consider a concrete case. We want to manage, in an otherwise useless class, a dyn...
Can you run GUI applications in a Docker container?
... How would I use a VNC client to view this remotely? Typing in the IP + port doesn't seem to be working.
– user94154
Jul 30 '13 at 0:42
17
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Best way to parse command-line parameters? [closed]
...ing a List).
Note also that this approach allows for concatenation of multiple command line arguments - even more than two!
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ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock'
...the mysql server. If you do not have mysql server installed on the address/IP address you mentioned with '-h', the above error will pop up. This is because it is not able to connect to MySQL server through the socket mysql.sock 2) If Mysql-server is already installed, it should be running.If it's no...
How do you sign a Certificate Signing Request with your Certification Authority?
...cConstraints = CA:FALSE
keyUsage = digitalSignature, keyEncipherment
subjectAltName = @alternate_names
nsComment = "OpenSSL Generated Certificate"
####################################################################
[ alternate_names ]
DNS.1 = example.com
DNS.2 =...
How to validate an email address using a regular expression?
... that validates MOST email addresses correctly, assuming they don't use an IP address as the server part.
75 Answers
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Is there a way to make npm install (the command) to work behind proxy?
...y http://username:password@cacheaddress.com.br:80 install packagename
Skip the username:password part if proxy doesn't require you to authenticate
EDIT: A friend of mine just pointed out that you may get NPM to work behind a proxy by setting BOTH HTTP_PROXY and HTTPS_PROXY environment variables,...
How to use cURL to get jSON data and decode the data?
...
You can Use this for Curl:
function fakeip()
{
return long2ip( mt_rand(0, 65537) * mt_rand(0, 65535) );
}
function getdata($url,$args=false)
{
global $session;
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,$url);
curl_setopt($ch...
TCP 的那些事儿（下） - 更多技术 - 清泛网 - 专注C/C++及内核技术
...能动态地设置。 为了动态地设置，TCP引入了RTT——Round Trip Time，也就是一个数据包从发出去到回来的时间。这样发送端就大约知道需要多少的时间，从而可以方便地设置Timeout——RTO（Retransmission TimeOut），以让我们的重传机制更...
Java current machine name and logged in user?
...he Java API says that getHostName() will return
the host name for this IP address, or if the operation is not allowed by the security check, the textual representation of the IP address.
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