foreach与for的性能比较

1

string

[] strings=

new

string

[] {

"str1"

,

"str2"

,

"str3"

,

"str4"

,

"str5"

,

"str6"

};

2

foreach

(

string

s

in

strings)

3

{

4

textBox1.AppendText(s+

" "

);

5

}

01

foreach

(

string

s

in

strings)

02

000000e0  nop

03

000000e1  mov         eax,dword ptr [ebp-44h]

04

000000e4  mov         dword ptr [ebp-50h],eax

05

000000e7  xor         edx,edx

06

000000e9  mov         dword ptr [ebp-54h],edx

07

000000ec  nop

08

000000ed  jmp         00000136

//jmp to J1

09

000000ef  mov         eax,dword ptr [ebp-54h]

10

000000f2  mov         edx,dword ptr [ebp-50h]

11

000000f5  cmp         eax,dword ptr [edx+4]

12

000000f8  jb          000000FF 　　　　　　　　

//低于"1个字节全是1"跳转

13

000000fa  call        65C86690 　　　　　　　　

//地址如此之大,应该是个外部call

14

000000ff  mov         eax,dword ptr [edx+eax*4+0Ch]

15

00000103  mov         dword ptr [ebp-48h],eax

16

{

17

00000106  nop

18

textBox1.AppendText(s+

" "

); </COD < dd>