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How to let PHP to create subdomain automatically for each user?
...p though because you'll have to make sure that all subdomain requests get handled properly. This isn't terrible with Apache but might be tricky in a hosted environment.
– Mark Biek
Oct 8 '08 at 17:55
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What is the difference between ArrayList.clear() and ArrayList.removeAll()?
Assuming that arraylist is defined as ArrayList<String> arraylist , is arraylist.removeAll(arraylist) equivalent to arraylist.clear() ?
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MongoDB副本集详解 优于以往的主从模式 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...点成为主节点。
Hidden:这类节点是不能够被客户端制定IP引用，也不能被设置为主节点，但是可以投票，一般用于备份数据。
Delayed：可以指定一个时间延迟从primary节点同步数据。主要用于备份数据，如果实时同步，误删除...
uwsgi invalid request block size
...ce), while when http option is set uwsgi can accept incoming HTTP requests and route them by itself.
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Using Java 8's Optional with Stream::flatMap
...de() {
return optional.hashCode();
}
@Override
public String toString() {
return optional.toString();
}
}
You will see that I added flatStream(), as here:
public Stream<T> flatStream() {
if (!optional.isPresent()) {
return Stream.empty();
}
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Combining node.js and Python
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For communication between node.js and Python server, I would use Unix sockets if both processes run on the same server and TCP/IP sockets otherwise. For marshaling protocol I would take JSON or protocol buffer. If threaded Python shows up to be a bottleneck, ...
How long is the SHA256 hash?
...256', 'hello, world!');
var_dump($hash);
Will give you :
$ php temp.php
string(64) "68e656b251e67e8358bef8483ab0d51c6619f3e7a1a9f0e75838d41ff368f728"
i.e. a string with 64 characters.
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What is the motivation for bringing Symbols to ES6?
...t that the :symbol notion in Ruby is needless; we could easily use plain strings instead, like we do in JavaScript. And now they decide to complicate things in JS with that.
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Simulate delayed and dropped packets on Linux
I would like to simulate packet delay and loss for UDP and TCP on Linux to measure the performance of an application. Is there a simple way to do this?
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Python time measure function
... return wrap
Note I'm calling f.func_name to get the function name as a string(in Python 2), or f.__name__ in Python 3.
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