# calling a method on each item:
#Perl 6:
@list>>.method;
#Perl 5:
map { $_->method } @list;

# summing all elements:
#Perl 6:
my $sum = [+] @numbers;

# Perl 5:
use List::Util qw(sum);
my $sum = sum @numbers;

# adding two vectors item by item:
# Perl 6:
@v1 >>+<< @v2;

# Perl 5: Needs PDL or overloading for neat syntax.