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BLE 蓝牙APP 接收不到来自蓝牙模块的讯息 - App应用开发 - 清泛IT社区，为创新赋能！
...it（单字节）整型值发生变化时接收更新。服务UID 和特性UUID 是必需的。signed 参数指示在转换为 App Inventor数字 时是否应将字节解释为有符号值。每当收到更改时，将触发 BytesReceived 事件。
你这个问题比较泛，需要具体问题...
How do I add custom field to Python log format string?
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I have this sample not working for me. import uuid uniqueId = str(uuid.uuid4()) extra = {"u_id" : uniqueId} RotatingHandler = RotatingFileHandler(LOG_FILENAME,encoding='utf-8',maxBytes=maxSize, backupCount=batchSize) logger.basicConfig(handlers=[Rotatin...
Android 4.3 Bluetooth Low Energy unstable
... advertising
Better not use android.bluetooth.BluetoothAdapter#startLeScan(UUID[] serviceUuids, LeScanCallback callback) with the parameter to filter for certain service UUIDs because this is broken completely in Samsung Galaxy S3 with Android 4.3 and doesn't work for 128bit UUIDs in general.
Gatt a...
Return rows in random order [duplicate]
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For MySQL use ORDER BY uuid(). (...for those arriving on this page via a generic search, like me!)
– Stan James
Jan 7 '12 at 4:15
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Get the Last Inserted Id Using Laravel Eloquent
... autoincrement, this will always return 0. In my case the id was a string (UUID) and for this to work I had to add public $incrementing = false; in my model.
– Luís Cruz
Apr 20 '15 at 17:18
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NodeJS: Saving a base64-encoded image to disk
...ase64 file, it return filename save it in DB.
import fs from 'fs';
const uuid = require('uuid/v1');
/*Download the base64 image in the server and returns the filename and path of image.*/
function saveImage(baseImage) {
/*path of the folder where your project is saved. (In my case i got it fr...
How do I import a specific version of a package using go get?
...n. Follow these steps:
go mod init .
go mod edit -require github.com/wilk/uuid@0.0.1`
go get -v -t ./...
go build
go install
Here's more info on that topic - https://github.com/golang/go/wiki/Modules
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ActiveRecord OR query
...ys as arguments, the following code works in Rails 4:
query = Order.where(uuid: uuids, id: ids)
Order.where(query.where_values.map(&:to_sql).join(" OR "))
#=> Order Load (0.7ms) SELECT "orders".* FROM "o
Difference between __str__ and __repr__?
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This is true because for obj = uuid.uuid1(), obj.__str__() is "2d7fc7f0-7706-11e9-94ae-0242ac110002" and obj.__repr__() is "UUID('2d7fc7f0-7706-11e9-94ae-0242ac110002')". Developers need (value + origin) whereas customers need a value and they don't care h...
Create a unique number with javascript time
...presentation, not sure though, but i can see the problem, if you call your uuid generator often enough, only last 3 chars are changing so the chances are high that you will get into a collision. You get much better odds if you just stick to new Date.getTime() calls. But hey if it worked for your pur...