private/Join-Parts.ps1
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function Join-Parts { <# .SYNOPSIS Join strings with a specified separator. .DESCRIPTION Join strings with a specified separator. This strips out null values and any duplicate separator characters. See examples for clarification. .PARAMETER Separator Separator to join with .PARAMETER Parts Strings to join .EXAMPLE Join-Parts -Separator "/" this //should $Null /work/ /well # Output: this/should/work/well .EXAMPLE Join-Parts -Parts http://this.com, should, /work/, /wel # Output: http://this.com/should/work/wel .EXAMPLE Join-Parts -Separator "?" this ?should work ???well # Output: this?should?work?well .EXAMPLE $CouldBeOneOrMore = @( "JustOne" ) Join-Parts -Separator ? -Parts CouldBeOneOrMore # Output JustOne # If you have an arbitrary count of parts coming in, # Unnecessary separators will not be added .NOTES Credit to Rob C. and Michael S. from this post: http://stackoverflow.com/questions/9593535/best-way-to-join-parts-with-a-separator-in-powershell #> [cmdletbinding()] param ( [string]$Separator = "/", [parameter(ValueFromRemainingArguments=$true)] [string[]]$Parts = $null ) ( $Parts | Where-Object { $_ } | Foreach-Object { ( [string]$_ ).trim($Separator) } | Where-Object { $_ } ) -join $Separator } |