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Is “for(;;)” faster than “while (TRUE)”? If not, why do people use it?
... while(42) is the coolest, produces no different result with respect to while(1) or while(true) or while(!0), and has philosophical meaning. I suppose for(;;) is parsed faster than the others anyway
– ShinTakezou
Jun 10 '10 at 12:21
...
BSS段、数据段、代码段、堆与栈 剖析 - C/C++ - 清泛网 - 专注C/C++及内核技术
...i$ = -404
_main PROC NEAR
; File test.cpp
; Line 13
push ebp
mov ebp, esp
sub esp, 404 ; 00000194H
push edi
; Line 14
mov DWORD PTR _run$[ebp], 1
mov DWORD PTR _run$[ebp+4], 2
mov DWORD PTR _run$[ebp+8], 3
mov DWORD PTR _run$[ebp+12], 4
mov DWORD PTR _run$[ebp+16], 5
mov DWORD PTR _run...
App Inventor 2 拓展参考文档 · App Inventor 2 中文网
...姿势识别
【AI视觉模型】TeachableMachine 拓展：使用设备摄像头训练视觉模型
【AI人脸标记】FaceMeshExtension 拓展：人脸标记识别
【AI物品识别】LookExtension 拓展：使用编译到扩展中的神经网络进行物品识别
UI界面
...
C++对象布局及多态探索之菱形结构虚继承 - C/C++ - 清泛网 - 专注C/C++及内核技术
...到子类的成员变量。
01 00426C00 push ebp
02 00426C01 mov ebp,esp
03 00426C03 sub esp,0CCh
04 00426C09 push ebx
05 00426C0A push esi
06 00426C0B push edi
07 00426C0C push ecx
08 00426C0D lea edi,[ebp+FFFFFF34h]
09 00426C13 mov ecx,33h
10 00426C18 mov eax,0CCCCCCCCh
11 ...
App Inventor 2 拓展参考文档 · App Inventor 2 中文网
...流程
【AI图像分类】TeachableMachine 拓展：通过手机摄像头进行实时图像分类识别
【AI声音识别】PersonalAudioClassifier (PAC) 拓展：自行训练AI声音识别模型
【AI姿势识别】PosenetExtension 拓展：人体姿势识别
【AI人脸标记】Fa...
App Inventor 2 拓展参考文档 · App Inventor 2 中文网
...流程
【AI图像分类】TeachableMachine 拓展：通过手机摄像头进行实时图像分类识别
【AI声音识别】PersonalAudioClassifier (PAC) 拓展：自行训练AI声音识别模型
【AI姿势识别】PosenetExtension 拓展：人体姿势识别
【AI人脸标记】Fa...
When should the volatile keyword be used in C#?
...es before and after reads and
writes may be observed to be ordered with respect to each other.
Certain operations such as creating a new thread, entering a lock, or
using one of the Interlocked family of methods introduce stronger
guarantees about observation of ordering. If you want more de...
How exactly does the callstack work?
...standing of how the low level operations of programming languages work and especially how they interact with the OS/CPU. I've probably read every answer in every stack/heap related thread here on Stack Overflow, and they are all brilliant. But there is still one thing that I didn't fully understand...
Is there any overhead to declaring a variable within a loop? (C++)
...0) { var = 4; } }
gcc -S 1.c
1.s:
_main:
pushl %ebp
movl %esp, %ebp
subl $24, %esp
movl $0, -16(%ebp)
jmp L2
L3:
movl $4, -12(%ebp)
L2:
cmpl $99, -16(%ebp)
jle L3
leave
ret
2.c
main() { while(int i < 100) { int var = 4; } }
gcc -S ...
What is the purpose of the EBP frame pointer register?
...ocal variable or an argument is at with a single constant offset. Although ESP's value changes over the course of execution, EBP remains the same making it possible to reach the same variable at the same offset (such as first parameter will always be at EBP+8 while ESP offsets can change significant...