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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：...
What is a good Java library to zip/unzip files? [closed]
... at the default Zip library that comes with the JDK and the Apache compression libs and I am unhappy with them for 3 reasons:
...
Import PEM into Java Key Store
...e .pem file contains more than one certificate.
– MarioVilas
Feb 24 '14 at 15:31
14
I've got a si...
Create Pandas DataFrame from a string
In order to test some functionality I would like to create a DataFrame from a string. Let's say my test data looks like:
...
NSString with \n or line break
...
I just ran into the same issue when overloading -description for a subclass of NSObject. In this situation I was able to use carriage return (\r) instead of newline (\n) to create a line break.
[NSString stringWithFormat:@"%@\r%@", mystring1,mystring2];
...
Select row with most recent date per user
... WHERE t2.user = t1.user)
Result:
| ID | USER | TIME | IO |
--------------------------------
| 2 | 9 | 1370931664 | out |
| 3 | 6 | 1370932128 | out |
| 5 | 12 | 1370933037 | in |
Solution which gonna work everytime:
SQLFIDDLEExample
SELECT t1.*
FROM lms_attendanc...
App Inventor 2 AI伴侣有电脑版的吗? - App Inventor 2 中文网 - 清泛网 - 专注C/C++及内核技术
...那么及时，也就是新增的功能需要一段时间后才能更新到iOS版中。
其次，使用了拓展的App一律不支持iOS版AI伴侣的测试，因为拓展目前都是java/kotlin写的安卓平台程序，可能未来待iOS平台成熟后，会有swift苹果版拓展。
视频...
Parsing HTML into NSAttributedText - how to set font?
...
Swift 2 version, based on the answer given by Javier Querol
extension UILabel {
func setHTMLFromString(text: String) {
let modifiedFont = NSString(format:"<span style=\"font-family: \(self.font!.fontName); font-size: \(se...
Can you call Directory.GetFiles() with multiple filters?
... later,
var files = Directory.EnumerateFiles("C:\\path", "*.*", SearchOption.AllDirectories)
.Where(s => s.EndsWith(".mp3") || s.EndsWith(".jpg"));
For earlier versions of .NET,
var files = Directory.GetFiles("C:\\path", "*.*", SearchOption.AllDirectories)
.Where(s =&...
App Inventor 2 连接方式：AI伴侣、模拟器、USB · App Inventor 2 中文网
...那么及时，也就是新增的功能需要一段时间后才能更新到iOS版中。
其次，使用了拓展的App一律不支持iOS版AI伴侣的测试，因为拓展目前都是java写的安卓平台程序，可能未来待iOS平台成熟后，会有swift苹果版拓展。
视频演示
...