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java.net.ConnectException: Connection refused
...
I had the same problem with Mqtt broker called vernemq.but solved it by adding the following.
$ sudo vmq-admin listener show
to show the list o allowed ips and ports for vernemq
$ sudo vmq-admin listener start port=1885 -a 0.0.0.0 --mountpoint /ap...
How to use unicode characters in Windows command line?
...rary which has these workarounds), it would not work reliably. Win8 fixes ½ of these problems with cp65001, but the rest is still applicable to Win10.
I work in cp1252. As I already said: To input/output Unicode in a console, one does not need to set the codepage.
The details
To read/write Un...
App Inventor 2 拓展参考文档 · App Inventor 2 中文网
...件提取元数据和专辑封面
通信
【MQTT】UrsPahoMqttClient 拓展：轻量级物联网传输协议
【TCP客户端】 ClientSocketAI2Ext 拓展：TCP/IP传输协议
【TCP共享客户端】TCPClient TCP客户端扩展：连接TCP服务器进行文本消息...
How to remove non-alphanumeric characters?
...orld'); // helloworld
preg_replace('/[^\p{L}\p{N} ]+/', '', 'abc@~#123-+=öäå'); // abc123öäå
preg_replace('/[^\p{L}\p{N} ]+/', '', '你好世界!@£$%^&*()'); // 你好世界
Note: This is a very old, but still relevant question. I am answering purely to provide supplementary informati...
Func delegate with no return type
...at 17:06
Aarón Ibañez WerthermännAarón Ibañez Werthermänn
4122 bronze badges
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AWK: Access captured group from line pattern
...ntaine Could grep -o output captured groups?
– Olle Härstedt
Mar 7 '18 at 15:29
1
@OlleHärstedt...
What's the best way to use R scripts on the command line (terminal)?
...pr 15 '09 at 11:37
Jouni K. SeppänenJouni K. Seppänen
33.9k55 gold badges6767 silver badges9696 bronze badges
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Android Studio suddenly cannot resolve symbols
...wered Apr 7 '14 at 0:01
Victor HäggqvistVictor Häggqvist
4,37233 gold badges2525 silver badges3232 bronze badges
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How to check if one of the following items is in a list?
...ed Apr 11 '09 at 16:12
Tobias KräntzerTobias Kräntzer
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LLVM C++ IDE for Windows
...ed Mar 14 '11 at 8:09
Leo HippeläinenLeo Hippeläinen
5111 silver badge11 bronze badge
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