SYNOPSIS use Data::Dump::OneLine; # exports dd and dmp $str = dd(@list); DESCRIPTION It now uses Data::Dmp. You should use Data::Dmp directly. SEE ALSO JSON should also encode to a single-line string, but some data structures (cyclical, contains globs or other special Perl data) cannot be encoded out of the box to JSON. Data::Dumper::OneLine strives to do the same for Data::Dumper, but last time I tried it (at v0.05) it's still buggy.