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AppInventor2中的二进制数据以什么样的形式传递？字节列表、字节数组是什么...
...们可以作为扩展之间的通用 Object 类型变量进行交换。
MQTT拓展中的字节数组的处理方式就是这种，直接转换成byte[]：
@SimpleFunction(description = "Publishes a binary array.")
public void PublishByteArray(String Topic, Object ByteArray...
切换屏幕后如何自动恢复蓝牙连接 - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
...，绝大部分组件及拓展都是创建的新对象，类似蓝牙、 mqtt 的连接会全部失效。两种思路：
1，使用虚拟屏幕，一个屏幕上多个布局，控制显示隐藏模拟实现多屏幕，速度还快！
2，保存屏幕 1 已经连接的硬件地址到微数据库...
app 息屏后连接会断开，需要深入研究一下 - 用户反馈 - 清泛IT社区，为创新赋能！
如题，tcp，蓝牙，mqtt 等连接都会断开。
有办法避免吗？
重连策略有效解决吗？
In PHP, how to detect the execution is from CLI mode or through browser ? [duplicate]
... This used to be a link only answer until someone copied @Linus Unnebäck's answer. Bad habbit! Downvote this one, upvote the other one...
– Gottlieb Notschnabel
Apr 1 '15 at 13:55
...
Linking R and Julia?
...red Aug 12 '15 at 17:06
Martin MächlerMartin Mächler
3,8962222 silver badges2424 bronze badges
...
How can I override Bootstrap CSS styles?
...Dec 21 '13 at 17:04
Markus KottländerMarkus Kottländer
7,41033 gold badges3131 silver badges5757 bronze badges
...
Equals(=) vs. LIKE
...duce results different from the = comparison operator:
mysql> SELECT 'ä' LIKE 'ae' COLLATE latin1_german2_ci;
+-----------------------------------------+
| 'ä' LIKE 'ae' COLLATE latin1_german2_ci |
+-----------------------------------------+
| 0 |
+------...
Using awk to remove the Byte-order mark
...t not UTF-16 files without a BOM) to UTF-8 without a BOM:
$ printf '\ufeffä\n'|iconv -f utf-8 -t utf-16be>bom-utf16be
$ printf '\ufeffä\n'|iconv -f utf-8 -t utf-16le>bom-utf16le
$ printf '\ufeffä\n'>bom-utf8
$ printf 'ä\n'|iconv -f utf-8 -t utf-16be>utf16be
$ printf 'ä\n'|iconv -f ...
Regex to match only letters
...r letters than A–Z, you can either add them to the character set: [a-zA-ZäöüßÄÖÜ]. Or you use predefined character classes like the Unicode character property class \p{L} that describes the Unicode characters that are letters.
...
Pass a parameter to a fixture function
...pytest/issues/5712 and the related (merged) PR.
– Nadège
Feb 19 at 11:12
This was reverted github.com/pytest-dev/pyte...