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AppInventor写二进制文件 - App应用开发 - 清泛IT社区，为创新赋能！
...二进制文件：https://www.fun123.cn/reference/iot/bytearray.html
蓝牙等组件返回的字节列表（list），目前不能直接追加到拓展中，可以采用遍历字节列表，然后将字节逐一将追加到拓展中，最后调用拓展方法保存为二进制文件。
2026 新年第一篇：即将全面支持苹果iOS App编译生成，纯血鸿蒙计划中，编译...
...身不可用，iOS 支持很多常用功能作为内置 Blocks／组件：蓝牙支持（Bluetooth）NFC（Near Field Communication）物联网扩展（例如 micro:bit）AI 扩展基础支持（如 PersonalImageClassifier 等）
这些是在 iOS 原生支持层面集成的，而非通过插件机...
Useful code which uses reduce()? [closed]
...found for it besides + and * were with and and or, but now we have any and all to replace those cases.
foldl and foldr do come up in Scheme a lot...
Here's some cute usages:
Flatten a list
Goal: turn [[1, 2, 3], [4, 5], [6, 7, 8]] into [1, 2, 3, 4, 5, 6, 7, 8].
reduce(list.__add__, [[1, 2, 3]...
How to convert wstring into string?
...is is deprecated (stackoverflow.com/a/42946556/211176). My compiler throws errors when I try to run this code
– adam_0
Feb 14 '18 at 19:53
6
...
jsonify a SQLAlchemy result set in Flask [duplicate]
...
Hmm, that has changed the error, now I'm getting the error referencing the SQLAlchemy object as in: myapp.models.Rating object at 0x102f25c10> is not JSON serializable. Any clue? The object only contains Strings and Ints.
–...
MQTT与TCP的区别 - 创客硬件开发 - 清泛IT社区，为创新赋能！
... Labs的Kevin Ashton为了把宝洁的供应链上的RFID标签和互联网连接起来，在1999年第一个提出了IoT这个概念。发明人TCP协议的发明人是Vinton Cerf（下图左，曾在IBM工作过两年）和Robert Elliot Kahn（下图右）。
MQTT的发明人是IBM的Andy Stanf...
C++ Dynamic Shared Library on Linux
...ed.so", RTLD_NOW);
if (! handler) {
throw std::runtime_error(dlerror());
}
Reset_dlerror();
creator = reinterpret_cast<Base_creator_t>(dlsym(handler, "create"));
Check_dlerror();
}
std::unique_ptr<Base> create() const {
...
Printing 1 to 1000 without loop or conditionals
...t: Added '&' so it will consider the address hence evading the pointer errors.
This version of the above in standard C, since it doesn't rely on arithmetic on function pointers:
#include <stdio.h>
#include <stdlib.h>
void f(int j)
{
static void (*const ft[2])(int) = { f, exit ...
Extract subset of key-value pairs from Python dictionary object?
...rations are doing a different thing to the last two, and will result in an error if key doesn't exist in bigdict.
– naught101
Jun 19 at 1:56
1
...
What is the syntax rule for having trailing commas in tuple definitions?
..., and for Javascript always use jslint or equivalent to catch that sort of error before it gets near a browser.
– Duncan
Nov 3 '11 at 12:15
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