设置函数参数的默认值:
PS C:\Users\Administrator> function test{
>> [CmdletBinding()]
>> Param(
>> [String]$username,
>> [String]$type="direct"
>> )
>> $username
>> $type
>> }
PS C:\Users\Administrator> get_memberslist -username "xiamingliang"
xiamingliang
direct
PS C:\Users\Administrator> get_memberslist -username "xiamingliang" -type "test"
xiamingliang
test
PS C:\Users\Administrator>
PS C:\Users\Administrator>