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VBA/Excel/Access/Word/Language Basics/ByVal ByRef - История изменений
2026-04-06T00:14:02Z
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http://www.vbex.ru/index.php?title=VBA/Excel/Access/Word/Language_Basics/ByVal_ByRef&diff=1122&oldid=prev
в 16:33, 26 мая 2010
2010-05-26T16:33:00Z
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http://www.vbex.ru/index.php?title=VBA/Excel/Access/Word/Language_Basics/ByVal_ByRef&diff=1123&oldid=prev
Admin: 1 версия
2010-05-26T12:46:22Z
<p>1 версия</p>
<p><b>Новая страница</b></p><div>==ByVal and ByRef==<br />
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<!-- start source code --><br />
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<source lang="vb"><br />
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Private Sub Main()<br />
Dim num1 As Integer<br />
Dim num2 As Integer<br />
num1 = 10<br />
num2 = 15<br />
Call passByRef(num1)<br />
Call passByVal(num2)<br />
MsgBox (num1 & " " & num2)<br />
End Sub<br />
Private Sub passByRef(ByRef num3 As Integer)<br />
num3 = 20<br />
End Sub<br />
Private Sub passByVal(ByVal num2 As Integer)<br />
num2 = 20<br />
End Sub<br />
</source><br />
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==Creating Your Own VBA Functions: ByVal==<br />
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<!-- start source code --><br />
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<source lang="vb"><br />
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Public Function PowerDB(ByVal number As Double, n As Single) As Double<br />
number = number ^ n<br />
PowerDB = number<br />
End Function<br />
Private Sub testPower()<br />
Dim number As Double<br />
Dim n As Single<br />
Dim result As Double<br />
number = 2<br />
n = 3<br />
result = PowerDB(number, n)<br />
MsgBox (number & "^" & n & " = " & result)<br />
End Sub<br />
</source><br />
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==Passing Arguments with ByVal and ByRef==<br />
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<!-- start source code --><br />
<br />
<source lang="vb"><br />
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Private Sub Main()<br />
Dim num1 As Integer<br />
Dim num2 As Integer<br />
num1 = 10<br />
num2 = 20<br />
Call PassByValue(num1)<br />
Call PassByReference(num2)<br />
MsgBox num1 & " " & num2<br />
End Sub<br />
Private Sub PassByValue(ByVal num1 As Integer)<br />
num1 = num1 ^ 2<br />
End Sub<br />
Private Sub PassByReference(num3 As Integer)<br />
num3 = num3 ^ 2<br />
End Sub<br />
</source><br />
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==Pass variable by value==<br />
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<!-- start source code --><br />
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<source lang="vb"><br />
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Sub CubeRoot(ByVal dblNumber As Double)<br />
dblNumber = dblNumber ^ (1 / 3)<br />
End Sub<br />
Sub CubeRootWrapper()<br />
Dim dblVariable As Double<br />
dblVariable = 8<br />
Debug.Print "Before: " & dblVariable<br />
CubeRoot dblVariable<br />
Debug.Print "After: " & dblVariable<br />
End Sub<br />
</source></div>
Admin