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What does 'foo' really mean?

...ifies as a programming question, as in any programming tutorial, you eventually come across 'foo' in the code examples. (yeah, right?) ...
https://bbs.tsingfun.com/thread-1579-1-1.html 

摄像头画面显示 - App Inventor 2 中文网 - 清泛IT社区,为创新赋能!

我想在App Inventor 2中文网中显示出ESP32-CAM摄像头的画面,之前也确实可以了,但是现在有不行了,只显示出来一个图片的标识根据进一步沟通,确认图片来自html展示。请确认图片url地址可以直接访问吗? 如果图片url或云平台地...
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Why does this loop produce “warning: iteration 3u invokes undefined behavior” and output more than 4

... If during the evaluation of an expression, the result is not mathematically defined or not in the range of representable values for its type, the behavior is undefined. [ Note: most existing implementations of C++ ignore integer overflows. Treatment of division by zero, forming a remainde...
https://www.tsingfun.com/it/cpp/662.html 

SEH stack 结构探索(1)--- 从 SEH 链的最底层(线程第1个SEH结构)说起 -...

...72e9cfc 55 push ebp 772e9cfd 8bec mov ebp,esp 772e9cff 51 push ecx 772e9d00 51 push ecx 772e9d01 8d45f8 lea eax,[ebp-8] 772e9d04 50 push eax 772e9d05 e8d5ffffff call ntdll32!RtlInitializeE...
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How do exceptions work (behind the scenes) in c++

... Instead of guessing, I decided to actually look at the generated code with a small piece of C++ code and a somewhat old Linux install. class MyException { public: MyException() { } ~MyException() { } }; void my_throwing_function(bool throwit) { if (...
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解决:Run-Time Check Failure #0,The value of ESP was not properly sav...

解决:Run-Time Check Failure #0,The value of ESP was not properly saved调用DLL函数,出现错误Run-Time Check Failure #0 - The value of ESP was not properly saved across a function call. ...调用DLL函数,出现错误 Run-Time Check Failure #0 - The value of ESP was not properly saved...
https://www.tsingfun.com/it/os_kernel/511.html 

Linux反编译全攻略 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

... 00000110 55 50 58 20 54 65 61 6D 2E 20 41 6C 6C 20 52 69 UPX Team. All Ri 00000120 67 68 74 73 20 52 65 73 65 72 76 65 64 2E 20 24 ghts Reserved. $ 从上面的信息中可以看到程序被UPX压缩了,接下来请确信你系统中已有UPX,如果没有请到上面给...
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How to turn on front flash light programmatically in Android?

I want to turn on front flash light (not with camera preview) programmatically in Android. I googled for it but the help i found referred me to this page ...
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Using GCC to produce readable assembly?

...is nice: -r shows symbol names on relocations (so you'd see puts in the call instruction below) -R shows dynamic-linking relocations / symbol names (useful on shared libraries) -C demangles C++ symbol names -w is "wide" mode: it doesn't line-wrap the machine-code bytes -Mintel: use GAS/binutils MA...
https://www.tsingfun.com/it/cpp/656.html 

Win32汇编--使用MASM - C/C++ - 清泛网 - 专注C/C++及内核技术

...是单个子程序,在进入子程序的时候,通过修改堆栈指针esp来预留出需要的空间,在用ret指令返回主程序之前,同样通过恢复esp丢弃这些空间,这些变量就随之无效了。它的缺点就是因为空间是临时分配的,所以无法定义含有初...