Bug #101884 for Data-Validate-Struct: bugs and questions on Data::Validate::Struct

Hi, 1/ In Struct.pm:/^sub _trim, the substitution is missing a g flag. Here's a snippet: (saturn); perl -e '$_=" hello "; print "X${_}X\n"' X hello X (saturn); perl -e '$_=" hello "; s/^\s+|\s+$//; print "X${_}X\n"' Xhello X (saturn); perl -e '$_=" hello "; s/^\s+|\s+$//g; print "X${_}X\n"' XhelloX 2/ optional seems in-effective if the value of the key is undef (see attached t.pl) 3/ In case an item has a value undef, 'undefined value …' is triggered. 4/ Please, find attached (t.patch) a sample diff(1) attached as workaround on the problems listed above. The attached t.pl file should trigger them all. 5/ is there any plan to have optional array or hash? or alternatively, is there any available hack around it ? The only solution that comes to my mind is to associate to each possible node a hash { types = @types, value = $reference_value }. But this is less handy to use, and requires changing the API :-) Thanks for your work and have a nice day, Mathieu