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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 Inventor 2 中文网
... - 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ID
characteristicUuid - 特性UUID，通俗来讲它是硬件中某一功能的唯一身份ID
UUID的获取途径：
上面代码中的两个UUID仅仅...
JavaScript hard refresh of current page
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Restart/undo conflict resolution in a single file
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How to fetch FetchType.LAZY associations with JPA and Hibernate in a Spring Controller
...er method with @Transactional. An alternative is to create an intermediate Service layer between the Controller and the Repository that could expose methods which initialize lazy collections.
Update:
Please note that the above solution is easy, but results in two distinct queries to the database (on...
How to get the last element of an array in Ruby?
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css rotate a pseudo :after or :before content:“”
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Comparing two CGRects
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Overwrite single file in my current branch with the same file in the master branch?
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Python - json without whitespaces
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Iterating through a JSON object
...ns the JSON, but the JSON string could just as easily have come from a web service or a file.
import json
def main():
# create a simple JSON array
jsonString = '{"key1":"value1","key2":"value2","key3":"value3"}'
# change the JSON string into a JSON object
jsonObject = json.loads(...