(已解决)关于“=”号前的“&”符的意思 求问
本帖最后由 jinyue115 于 2010-8-9 10:37 编辑Opt('MustDeclareVars', 1)
Example1()
Example2()
; example1
Func Example1()
; Sample script with three user-defined functions
; Notice the use of variables, ByRef, and Return
Local $foo = 2
Local $bar = 5
msgBox(0,"Today is " & today(), "$foo equals " & $foo)
swap($foo, $bar)
msgBox(0,"After swapping $foo and $bar", "$foo now contains " & $foo)
msgBox(0,"Finally", "The larger of 3 and 4 is " & max(3,4))
EndFunc ;==>Example1
Func swap(ByRef $a, ByRef $b);swap the contents of two variables
Local $t
$t = $a
$a = $b
$b = $t
EndFunc
Func today();Return the current date in mm/dd/yyyy form
return (@MON & "/" & @MDAY & "/" & @YEAR)
EndFunc
Func max($x, $y);Return the larger of two numbers
If $x > $y Then
return $x
Else
return $y
EndIf
EndFunc
;End of sample script 1
; example2
Func Example2()
; Sample scriptusing @NumParams macro
Test_Numparams(1,2,3,4,5,6,7,8,9,10,11,12,13,14)
EndFunc ;==>Example2
Func Test_Numparams($v1 = 0, $v2 = 0, $v3 = 0, $v4 = 0, $v5 = 0, $v6 = 0, $v7 = 0, $v8 = 0, $v9 = 0, _
$v10 = 0, $v11 = 0, $v12 = 0, $v13 = 0, $v14 = 0, $v15 = 0, $v16 = 0, $v17 = 0, $v18 = 0, $v19 = 0)
Local $val
For $i = 1 To @NumParams
$val &= Eval("v" & $i) & " "
Next
MsgBox(0, "@NumParams example", "@NumParams =" & @NumParams & @CRLF & @CRLF & $val)
EndFunc
;End of sample script 2
关于第50行的$val &= Eval("v" & $i) & " "
疑问
求大侠给个解释 谢谢 &= 意思是 连接后面的字符串
如
$a = '我'
$b = '们'
$a &= $b ;$a 现在的值为 '我们' $a &= $b 等同于 $a = $a & $b
我是这么理解的 奥 明白了谢谢楼上的俩位
我原来只知道$a+=1 是$a=$a+1的意思
现在知道了 连接符合也可以这样用
不知道还有没有这样的了 奥 明白了谢谢楼上的俩位
我原来只知道$a+=1 是$a=$a+1的意思
现在知道了 连接符合也可以这样用
不知 ...
jinyue115 发表于 2010-7-23 11:34 http://www.autoitx.com/images/common/back.gif
http://www.autoitx.com/Doc/html/intro/lang_operators.htm 本帖最后由 netegg 于 2010-7-23 12:16 编辑
$a+=$b大概意思是$a累加$b。。。。
$a&=$b相当于类似意思的字符串操作 Thanks for your replies ! 路过,学了一招{:face (356):} {:face (382):}似懂非懂 {:face (383):} 学习哈 感谢各位了
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