大约有 234 项符合查询结果（耗时：0.0067秒） [XML]
What is the difference between native code, machine code and assembly code?
... ; save stack frame pointer
00000001 8B EC mov ebp,esp ; setup current frame
00000003 E8 30 BE 03 6F call 6F03BE38 ; Console.Out property getter
00000008 8B C8 mov ecx,eax ; setup "...
Differences between C++ string == and compare()?
...har>,std::allocator<char> > (0D23EECh)
00D42A41 add esp,8
00D42A44 movzx edx,al
00D42A47 test edx,edx
00D42A49 je Algorithm::PerformanceTest::stringComparison_usingEqualOperator1+0C4h (0D42A54h)
string::compare()
if (str1.compare...
Which is faster : if (bool) or if(int)?
...ng with -03 gives the following for me:
f:
pushl %ebp
movl %esp, %ebp
cmpl $1, 8(%ebp)
popl %ebp
sbbl %eax, %eax
andb $58, %al
addl $99, %eax
ret
g:
pushl %ebp
movl %esp, %ebp
cmpb $1, 8(%ebp)
popl %ebp
sbbl ...
In C, do braces act as a stack frame?
...Edit: Kristopher Johnson (and simon and Daniel) are right, and my initial response was wrong. With gcc 4.3.4.on CYGWIN, the code:
void foo(int[]);
void bar(void);
void foobar(int);
void foobar(int flag) {
if (flag) {
int big[100000000];
foo(big);
}
bar();
}
gives:
...
Purpose of ESI & EDI registers?
...ASM in 1985). Among these are
REP STOSB
REP MOVSB
REP SCASB
Which are, respectively, operations for repeated (= mass) storing, loading and scanning. What you do is you set up SI and/or DI to point at one or both operands, perhaps put a count in CX and then let 'er rip. These are operations that w...
What is the closest thing Windows has to fork()?
...l using
Win32 calls to emulate fork, the method has changed noticably.
Especially, we don't create the child process in the suspended state
anymore, unless specific datastructes need a special handling in the
parent before they get copied to the child. In the current 1.5.25
release the on...
Why are these constructs using pre and post-increment undefined behavior?
... 0x00000000 <+0>: push %ebp
0x00000001 <+1>: mov %esp,%ebp
0x00000003 <+3>: sub $0x10,%esp
0x00000006 <+6>: movl $0x0,-0x4(%ebp) // i = 0 i = 0
0x0000000d <+13>: addl $0x1,-0x4(%ebp) // i++ i = 1
0x00000011 <+17>: mov ...
How to create a memory leak in Java?
... the classes it has loaded. It was even worse in many JVM implementations, especially prior to Java 7, because classes and ClassLoaders were allocated straight into permgen and were never garbage-collected at all.)
A variation on this pattern is why application containers (like Tomcat) can leak mem...
Laravel 4: how to “order by” using Eloquent ORM [duplicate]
...
I like this answer the best vs handling in-line, esp if you are handling multiple order conditions. Thanks! _.orderBy(this.users, ['name', 'last_login'], ['asc', 'desc'])
– kaleazy
Mar 22 '19 at 20:37
...
自己搭建的MQTT云服务器 - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
...题：每次打开我的APP后，要手动订阅一遍主题，才能收到ESP32推送的温度消息，显示在一个标签上，每秒钟刷新。但我一旦离开APP的页面，再切换回来时，又要手动订阅一遍，才能在标签上更新推送来的消息。请问这是什么原因...