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App Inventor 2 低功耗蓝牙(BLE) 硬件接入、数据通信及IO控制 - App Invent...
...如下：其中：values - 表示待发送的数据（这里是单字节0x01，表示高电平）signed - 表示values数据是否是有符号的数值（假表示无符号）serviceUuid - 服务UUID，通俗来讲它就是硬件的唯一身份IDcharacteristicUuid - 特性UUID，通俗来讲它是...
How to check permissions of a specific directory?
...ference symbolic links
You might be interested in manpages. That's where all people in here get their nice answers from.
refer to online man pages
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How to Execute SQL Server Stored Procedure in SQL Developer?
...ramater and still the same error. I don't think it's running procedure at all. The EXEC command isn't syntax highlighted, so I'm guessing Developer doesn't recognize it even though the connection is to a SQL Server database. But I can't find anything on the web to confirm/deny that.
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What is simplest way to read a file into String? [duplicate]
...ve one actual token, which is the entire file, so it can be read with one call to next().
There is a constructor that takes a File and a String charSetName (among many other overloads). These two constructor may throw FileNotFoundException, but like all Scanner methods, no IOException can be thrown...
set DateTime to start of month
...le and use that if you are going to use the value repeatedly. There is a small chance of an error in case this code is executed exactly around midnight; the two calls to DateTime.Now may happen on each side of midnight causing possibly odd effects.
– Fredrik Mörk
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How do I step out of a loop with Ruby Pry?
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To exit Pry unconditionally, type
exit-program
Edit from @Nick's comment: Also works:
!!!
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What is a fat JAR? [duplicate]
...eard people say that they create a fat JAR and deploy it. What do they actually mean ?
6 Answers
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How to use JavaScript regex over multiple lines?
... way to specify "any character, including a newline". If you want to match all newlines, you would need to add \r as well to include Windows and classic Mac OS style line endings: (.|[\r\n]).
That turns out to be somewhat cumbersome, as well as slow, (see KrisWebDev's answer for details), so a bett...
What's the best way of scraping data from a website? [closed]
...programming interface or another mechanism to access that data programmatically.
2 Answers
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Div height 100% and expands to fit content
...height of the body is also set to 100%. The inner div has a background and all that and is different from the body background. This works for making the div height 100% of the browser screen height, but the problem is I have content inside that div that extends vertically beyond the browser screen h...