cmpthese( -1, {
        japhy => sub { $_ = '  asdf  '; trim1(); },
        dchild => sub { $_ = '  asdf  '; trim2(); },
});
          Rate dchild  japhy
dchild 82708/s     --    -3%
japhy  85163/s     3%     --

cmpthese( -1, {
        japhy => sub { $_ = '  asdf  '; my $n = trim1(); },
        dchild => sub { $_ = '  asdf  '; my $n = trim2(); },
});
          Rate  japhy dchild
japhy  42766/s     --   -12%
dchild 48873/s    14%     --

cmpthese( -1, {
        japhy => sub { my $x = '  asdf  '; my $n = trim1( $x ); },
        dchild => sub { my $x = '  asdf  '; my $n = trim2( $x ); },
});
          Rate dchild  japhy
dchild 47733/s     --    -5%
japhy  50243/s     5%     --

cmpthese( -1, {
        japhy => sub { $_ = '  asdf  '; my @n = trim1( ); }, 
        dchild => sub { $_ = '  asdf  '; my @n = trim2( ); }, 
});
          Rate  japhy dchild
japhy  39628/s     --    -8%
dchild 43115/s     9%     --

cmpthese( -1, {
        japhy => sub { my @l = ('  asdf  '); my @n = trim1(@l); },
        dchild => sub { my @l = ('  asdf  '); my @n = trim2(@l); },
});
          Rate dchild  japhy
dchild 39628/s     --    -3%
japhy  40959/s     3%     --