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App Inventor接入Supabase：开源免费的后端新选择 - App Inventor 2 拓展 -...
...nyDB的本地限制，又不想折腾复杂的服务器搭建，Supabase就是你的最佳选择。
什么是Supabase？
Supabase是一个开源的Firebase替代品，为应用提供完整的后端服务。它的核心是一个强大的PostgreSQL数据库，非常节省。
核心价值：
...
5分钟了解 App Inventor 2：不会写代码，也能做出自己的 App - App应用开发...
什么是 App Inventor 2？
App Inventor 2（简称 AI2）是 MIT（麻省理工学院）开发的积木式 App 开发平台。核心理念：像搭积木一样搭建 App。
不需要写一行代码，所有逻辑通过拖拽"积木块"来完成——就像拼乐高一样，把不同...
拓展中有AndroidRuntime.jar和class.jar为啥有2份逻辑？ - App Inventor 2 ...
...中有AndroidRuntime.jar里面有混淆的源码，还有class.jar（里面是.dex也是拓展混淆更好的源码）为啥都要？
为啥两份都要：两条互不相通的加载路径
files/AndroidRuntime.jar（.class）
谁用: 打包 APK：buildserver
&nb...
Reading a file line by line in Go
...ksby-Robinson
1,95733 gold badges1919 silver badges2323 bronze badges
answered Jan 6 '12 at 12:55
user811773user811773
...
What does the keyword Set actually do in VBA?
...'set' is all about the DEFAULT PROPERTY. Just read stackoverflow.com/a/9924325/717732
– quetzalcoatl
Aug 7 '12 at 10:33
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Alarm 闹钟扩展 · App Inventor 2 中文网
...（参见 Android 10和小米设备的额外权限）。程序无法查询是否已授予此权限。示例中展示了解决此问题的可能方案。
使用Android 10及更新版本的小米设备用户必须授予两个权限。
⚠️ 注意：此扩展在AI伴侣中不起作用。闹钟...
print call stack in C or C++
...oost_stacktrace.cpp:29 (discriminator 2)
3# __libc_start_main in /lib/x86_64-linux-gnu/libc.so.6
4# _start in ./boost_stacktrace.out
0# boost::stacktrace::basic_stacktrace<std::allocator<boost::stacktrace::frame> >::basic_stacktrace() at /usr/include/boost/stacktrace/stacktrace.hpp:1...
How do I determine the size of my array in C?
...f of parameter: 8
Length of array: 7
Length of parameter: 2
Output (in a 32-bit windows OS):
sizeof of array: 28
sizeof of parameter: 4
Length of array: 7
Length of parameter: 1
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Is “argv[0] = name-of-executable” an accepted standard or just a common convention?
...ain() in a C or C++ application, will argv[0] always be the name of the executable? Or is this just a common convention and not guaranteed to be true 100% of the time?
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Compile time string hashing
...is is a little bit late, but I succeeded in implementing a compile-time CRC32 function with the use of constexpr. The problem with it is that at the time of writing, it only works with GCC and not MSVC nor Intel compiler.
Here is the code snippet:
// CRC32 Table (zlib polynomial)
static constexpr ...