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BLE 蓝牙模块 - App Inventor 2 中文网 - 清泛IT社区,为创新赋能!
BLE 蓝牙模块(使用模块自带 IO 口控制, )IO口 uuid 现在连接方式是,选择框里发现蓝牙名字,在选中 点击连接按钮 连接, IO口方式 uuid 有没有在初始化里面自动连接的方法?初始化中自动连接某个ble设备的推荐方式是:...
- App Inventor 2 中文网 - 清泛IT社区,为创新赋能!
1、UUID 背后的理念是,由于空间非常大(2^128,比宇宙中原子的估计数量还要多),随机选择两个 UUID 来标识事物时几乎不可能产生碰撞。如果您知道要连接的服务/特性,那么将它们编码到应用程序中是有意义的。如果您正在开...
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...
HTML - how can I show tooltip ONLY when ellipsis is activated
... answered Oct 29 '15 at 19:11
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Encode html entities in javascript
...t as following:
var str = "Test´†®¥¨©˙∫ø…ˆƒ∆÷∑™ƒ∆æøπ£¨ ƒ™en tést".toHtmlEntities();
console.log("Entities:", str);
console.log("String:", String.fromHtmlEntities(str));
Output in console:
Entities: Dit is&...
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...
How do you reverse a string in place in C or C++?
...it, nor the patience to use a hexeditor)
Examples:
$ ./strrev Räksmörgås ░▒▓○◔◑◕●
░▒▓○◔◑◕● ●◕◑◔○▓▒░
Räksmörgås sågrömskäR
./strrev verrts/.
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Difference between datetime and timestamp in sqlserver? [duplicate]
What is the difference between Timestamp and Datetime SQL Server?
2 Answers
2
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How to convert a string to lower or upper case in Ruby
... ÁÂÃÀÇÉÊÍÓÔÕÚ".mb_chars.downcase.to_s
=> "string áâãàçéêíóôõú"
"string áâãàçéêíóôõú".mb_chars.upcase.to_s
=> "STRING ÁÂÃÀÇÉÊÍÓÔÕÚ"
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Inserting a tab character into text using C#
...b + "32"
TextBox2.Text = "Luc" + vbTab + "47"
TextBox3.Text = "François-Victor" + vbTab + "12"
End Sub
will display
as you can see, age value for François-Victor is shifted to the right and is not aligned with age value of two others TextBox.
SOLUTION
To solve this problem, you mus...
