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MQTT报文多个数据的提取 - App Inventor 2 拓展 - 清泛IT社区,为创新赋能!
...t;GQ-YIWANG-HUI-WD",
"value": 35.02,
"type": 16,
"quality": 1,
"timestamp": 1772423665
},
{
&nbs...
Powershell equivalent of bash ampersand (&) for forking/running background processes
...f the job as parameter.
NOTE: Regarding your initial example, "bg sleep 30" would not work because sleep is a Powershell commandlet. Start-Process only works when you actually fork a process.
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psql: FATAL: Peer authentication failed for user “dev”
...
Try:
psql -U user_name -h 127.0.0.1 -d db_name
where
-U is the database user name
-h is the hostname/IP of the local server, thus avoiding Unix domain sockets
-d is the database name to connect to
This is then evaluated as a "network" connection by ...
Picking a random element from a set
...eal life, the Random object should be rather more shared than this
int i = 0;
for(Object obj : myhashSet)
{
if (i == item)
return obj;
i++;
}
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Commenting in a Bash script inside a multiline command
...
207
This will have some overhead, but technically it does answer your question:
echo abc `#Put you...
Making a triangle shape using xml definitions?
...
20 Answers
20
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How to count string occurrence in string?
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1084
The g in the regular expression (short for global) says to search the whole string rather than...
What do (lambda) function closures capture?
...reate a new scope each time you create the lambda:
>>> adders = [0,1,2,3]
>>> for i in [0,1,2,3]:
... adders[i] = (lambda b: lambda a: b + a)(i)
...
>>> adders[1](3)
4
>>> adders[2](3)
5
The scope here is created using a new function (a lambda, for bre...
How do I make UILabel display outlined text?
...GTextFill);
self.textColor = textColor;
self.shadowOffset = CGSizeMake(0, 0);
[super drawTextInRect:rect];
self.shadowOffset = shadowOffset;
}
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How to quit android application programmatically
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420
Since API 16 you can use the finishAffinity method, which seems to be pretty close to closing al...
