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# 谈 C++17 里的 State 模式之二 - hzSomthing
关于状态模式的研究，以及状态机的 C++17 中的通用实现，介绍 fsm-cxx …
[https://hedzr.com/c++/algorithm/cxx17-state-pattern-2/](https://hedzr.com/c++/algorithm/cxx17-state-pattern-2/)
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Hi Adam,
I've got a ton of errors like `NCollection_tmpl.hxx:1610:67: error: expected unqualified-id before '*' token` when building with GCC 13 (or 11) and glibc 2.37: [Pastebin](https://pastebin.…
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### Description
When I use RN 0.75.3 along with RN-skia 1.4.2, an error occurs.
C/C++: ninja: Entering directory `/Users/goldriven2023/GoldrivenRnApp/node_modules/@shopify/react-native-skia/android/…
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hi, im not using vs c++ for a long time, I find this problem, but when I replace with `#define __UINT32_MAX__ ((uint32_t)-1)`
it infoms:
```
error C4996 'std::codecvt_utf8': warning STL4017: std::…
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This disables a warning that codecvt_utf8 is deprecated in C++17. This is an issue on Windows. Instead, we should use `MultiByteToWideChar()` and `WideCharToMultiByte()`. See notes on this StackOverfl…
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I am having a compile failure with this platform that should work as ive tested it on i368.
ive listed everything i possibly can to fixing it or getting a workaround.
this is the best knowledge i …
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# 谈 C++17 里的 State 模式之一 | hzSomthing
关于状态模式的研究，以及状态机的 C++17 中的通用实现，介绍 fsm-cxx …
[https://hedzr.com/c++/algorithm/cxx17-state-pattern/](https://hedzr.com/c++/algorithm/cxx17-state-pattern/)
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# 谈 C++17 里的 Observer 模式 - 补 - hzSomthing
关于观察者模式上一 POST 的补充与改进，…
[https://hedzr.com/c++/algorithm/cxx17-observer-pattern-2/](https://hedzr.com/c++/algorithm/cxx17-observer-pattern-2/)
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[ 67%] Performing build step for 'arrow_cpp'
-- arrow_cpp build command succeeded. See also /home/st/yyp/openMVG/openMVG_Build/arrow/src/arrow_cpp-stamp/arrow_cpp-build-*.log
[ 67%] Performing in…
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Trying to compile the project I get the following error:
```
/Users/ret2libc/projects/pe-parse/pe-parser-library/src/unicode_codecvt.cpp:33:29: error: 'codecvt_utf8' is deprecated [-Werror,-Wdepreca…