Create powershell parameter default value is current directory

Question

I\'m hoping to create a parameter who\'s default value is the \'current directory\' (.).

For example, the Path parameter of Get-Child

Answer 1

Use PSDefaultValue attribute to define custom description for default value. Use SupportsWildcards attribute to mark parameter as Accept wildcard characters?.

<#
.SYNOPSIS
Does something with paths supplied via pipeline.
.PARAMETER Path
Specifies a path to one or more locations. Wildcards are permitted. The default location is the current directory (.).
#>
Function Invoke-PipelineTest {
    [cmdletbinding()]
    param(
        [Parameter(Mandatory=$False,ValueFromPipeline=$True,ValueFromPipelinebyPropertyName=$True)]
        [PSDefaultValue(Help='Description for default value.')]
        [SupportsWildcards()]
        [string[]]$Path='.'
    )
}