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Designing function f(f(n)) == -n
...
@a1kmm: Sorry, -2³² above should have been -2³¹. Anyway, the case where f(0)≠0 (and so f(0)=-2³¹) is actually the easier case, as we showed these two are disconnected from the rest. The other case we need to consider is that f(0)=0, b...
Setting the correct encoding when piping stdout in Python
...at you receive, and encode what you send.
# -*- coding: utf-8 -*-
print u"åäö".encode('utf-8')
Another didactic example is a Python program to convert between ISO-8859-1 and UTF-8, making everything uppercase in between.
import sys
for line in sys.stdin:
# Decode what you receive:
lin...
Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
...ost" the socket connector is used, but when you connect to "127.0.0.1" the TCP/IP connector is used. You could try using "127.0.0.1" if the socket connector is not enabled/working.
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Remove non-utf8 characters from string
... }
}
return $NewStr;
}
How it works:
echo remove_bs('Hello õhowå åare youÆ?'); // Hello how are you?
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linux 下巧妙使用squid代理服务器 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...用有以下几点。
1．共享网络
2．加快访问速度，节约通信带宽
3．防止内部主机受到攻击
4．限制用户访问，完善网络管理
原理：
① 客户端A向代理服务器提出访问Internet的请求。
② 代理服务器接受到请求后，首先与...
MySQL: determine which database is selected?
...lthough not reflected in the output above, on my system, it also shows the TCP port, which is handy for me since I'm running mysqld_multi and I like to remind myself which instance I'm talking to.
– Jeff
May 28 '18 at 20:30
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How to make unicode string with python3
...st place, but I think it was because the name can contains Swedish letters åäöÅÄÖ. But even they work without "unicode".
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What's causing my java.net.SocketException: Connection reset? [duplicate]
...wn to indicate that there is an error in the underlying protocol such as a TCP error
In your case it seems that the connection has been closed by the server end of the connection. This could be an issue with the request you are sending or an issue at their end.
To aid debugging you could look at ...
How can I update NodeJS and NPM to the next versions?
...) Many of the others did not work for me as well.
– læran91
Sep 27 '18 at 11:51
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基于内网外隔离的微信推送解决方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...m的80端口。当tomcat1&2发起访问请求的一个TCP会话内，整条通信链完整，可以互相推送信息，当这个TCP会话结束。qyapi.weixin.qq.com需要访问内部服务器将变得不可行，这是就需要第三部分完成
第三部分
整个网络中只有tomcat3...