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Tip of the Day
Language: VB7
Expertise: Intermediate
Sep 14, 2002



Application Security Testing: An Integral Part of DevOps

KeepInRange - Ensure that a value is in a given range

' Keep the first argument in the range [lowLimit, highLimit]
' If the value is adjusted, the fourth (optional) argument is set to True
' This function works will all basic data types and with objects 
' that implement the IComparable interface

Function KeepInRange(ByVal value As Object, ByVal lowLimit As Object, _
    ByVal highLimit As Object, Optional ByRef OutOfRange As Boolean = False) As _
    ' we leverage the IComparable interface
    Dim icomp As IComparable = DirectCast(value, IComparable)

    If icomp.CompareTo(lowLimit) < 0 Then
        OutOfRange = True
        Return lowLimit
    ElseIf icomp.CompareTo(highLimit) > 0 Then
        OutOfRange = True
        Return highLimit
        OutOfRange = False
        Return value
    End If
End Function
Francesco Balena
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