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App Inventor 2 经典蓝牙(SPP) 硬件接入：hc05 · App Inventor 2 中文网
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通过厂商App连接串口测试，发现HC-05模块是经典蓝牙2.0，并不支持蓝牙5.0（低功耗BLE），它需要配对码进行配对，App Inventor 2 中使用“蓝牙客户端”组件，而非BLE拓展，必须在手机设置中配对成功才能出现在蓝牙列表中。
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【研究中】高德地图API研究及接入 - App应用开发 - 清泛IT社区，为创新赋能！
...划：https://lbs.amap.com/api/webservice/guide/api/direction
路径规划2.0：https://lbs.amap.com/api/webservice/guide/api/newroute
高德地图支持XYZ格式。XYZ格式是一种瓦片地图服务，将地图分成无数个小块，每个块对应一个特定的URL。高德地图提供了X...
How to implement a rule engine?
... Expression.
NOTE: there is a limitation that your expression must be .NET 2.0 (no lambdas or other C# 3.0 features) due to a limitation in CodeDOM.
Here is some sample code for that.
sb.AppendLine(string.Format("\tpublic class {0} : SomeCompany.ComponentModel.IDataRule<{1}>", className, typ...
Is there a Null OutputStream in Java?
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here alvinalexander.com/java/jwarehouse/commons-io-2.0/src/main/java/…
– Aftershock
Sep 2 '14 at 11:06
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Regular Expression to match only alphabetic characters
...dia.org/wiki/Regular_expression#Character_classes
http://ruby-doc.org/core-2.0/Regexp.html
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iOS: How to get a proper Month name from a number?
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Swift 2.0
let monthName = NSDateFormatter().monthSymbols[monthNumber - 1]
Swift 4.0
let monthName = DateFormatter().monthSymbols[monthNumber - 1]
shar...
AssertContains on strings in jUnit
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use fest assert 2.0 whenever possible EDIT: assertj may have more assertions (a fork)
assertThat(x).contains("foo");
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How do I tell Maven to use the latest version of a dependency?
...groupId>
<artifactId>my-foo</artifactId>
<version>2.0.0</version>
<versioning>
<release>1.1.1</release>
<versions>
<version>1.0</version>
<version>1.0.1</version>
<version>1.1</version...
What's the opposite of chr() in Ruby?
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If String#ord didn't exist in 1.9, it does in 2.0:
"A".ord #=> 65
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Is it possible in Java to access private fields via reflection [duplicate]
... Nice correction. (See Guideline 6-4 of Secure Coding Guidelines Version 2.0 for the Java Programming Language: java.sun.com/security/seccodeguide.html )
– Tom Hawtin - tackline
Oct 12 '09 at 18:03
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