如何编写PowerShell函数来获取目录？

Question

使用PowerShell我可以使用以下命令获取目录:

Get-ChildItem -Path $path -Include "obj" -Recurse | `
    Where-Object { $_.PSIsContainer }

我更喜欢编写一个函数,因此命令更具可读性.例如:

Get-Directories -Path "Projects" -Include "obj" -Recurse

除了-Recurse优雅处理外,以下功能完全正确:

Function Get-Directories([string] $path, [string] $include, [boolean] $recurse)
{
    if ($recurse)
    {
        Get-ChildItem -Path $path -Include $include -Recurse | `
            Where-Object { $_.PSIsContainer }
    }
    else
    {
        Get-ChildItem -Path $path -Include $include | `
            Where-Object { $_.PSIsContainer }
    }
}

如何if从我的Get-Directories函数中删除该语句,或者这是一种更好的方法吗？

Answer 1

试试这个:

# nouns should be singular unless results are guaranteed to be plural.
# arguments have been changed to match cmdlet parameter types
Function Get-Directory([string[]]$path, [string[]]$include, [switch]$recurse) 
{ 
    Get-ChildItem -Path $path -Include $include -Recurse:$recurse | `
         Where-Object { $_.PSIsContainer } 
} 

这是有效的,因为-Recurse:$ false同样没有-Recurse.