bad.ps1

$params = @{
  Name = 'w*'
}

# unrelated stuff happening
# ...
# ...
# ...

$params2 = @{
  Exclude = 'w32time'
}

# another 200 lines of logging, comments, setup
# ...
# ...
# ...



# what are we looking for again?
$services = Get-Service @params @params2

better.ps1

# unrelated stuff happening
# ...
# ...
# ...

$params = @{
  Name = 'w*'
}
$params2 = @{
  Exclude = 'w32time'
}

# why do I have to look twice for these
$services = Get-Service @params @params2

great.ps1

# unrelated stuff happening
# ...
# ...
# ...

$params = @{
  Name = 'w*'
  Exclude = 'w32time'
}
# lines are short and readable, $params definition is close
$services = Get-Service @params

necessary.ps1

# Implementing proxy functions
function Get-ServicesWithW
{
  param(
    [Parameter(ValueFromPipelineByPropertyName=$true)]
    [Alias('Cn')]
    [ValidateNotNullOrEmpty()]
    [string[]]
    ${ComputerName},

    [Alias('DS')]
    [switch]
    ${DependentServices},

    [Alias('SDO','ServicesDependedOn')]
    [switch]
    ${RequiredServices},

    [Parameter(ParameterSetName='DisplayName', Mandatory=$true)]
    [string[]]
    ${DisplayName},

    [ValidateNotNullOrEmpty()]
    [string[]]
    ${Include},

    [ValidateNotNullOrEmpty()]
    [string[]]
    ${Exclude},

    [Parameter(ParameterSetName='InputObject', ValueFromPipeline=$true)]
    [ValidateNotNullOrEmpty()]
    [System.ServiceProcess.ServiceController[]]
    ${InputObject}
  )
    
  # Ain't no way in hell I'm gonna write the if/elseif/else logic to inspect and 
  # ensure every possible permutation of named parameter arguments are supported here.

  # I want to focus only on the behavior of this function instead
  $PSBoundParameters['Name'] = 'w*'
  $PSBoundParameters['Exclude'] = if($PSBoundParameters.Contains('Exclude')){
    @($PSBoundParameters['Exclude'];'w32time')
  }
  else {
    ,'w32time'
  }

  Get-Service @PSBoundParameters
}