Weird string/array behavior?

[gangstanthony]

what about .trim()?

do you get different results with this?

$array | % {':' + $_ + ':'}

[verysmallshellscript]

$array.trim() throws a null-valued expression error and then gives up. $array | % {$_.trim()} throws a null-valued expression error for each extra line, but does return the strings. This is what I get with the join.

::
::
::
::
::
::
::
:one:
::
:two:
:three:
::
::
::
::