Merge pull request #2990 from sshaw/patch-1

Ruby fixes

doc/Language/rb-nutshell.pod6

@@ -127,7 +127,7 @@ $n < 1; # Perl 6
 
 =end item
 
-=head2 C«.» Method calls, C<.send>
+=head2 C«.» Method calls, C<.public_send>
 
 Method call syntax uses a dot just like Ruby:
 
@@ -140,7 +140,7 @@ $person.name   # Perl 6
 To call a method whose name is not known until runtime:
 
 =for code :lang<ruby>
-object.send(methodname, args);  # Ruby
+object.public_send(methodname, args);  # Ruby
 =for code
 my $object; my Str $methodname; my @args; ...;
 $object."$methodname"(@args);   # Perl 6
@@ -263,10 +263,10 @@ say %calories« $keys ».join(','); # Perl 6, interpolated split
 I<Key/value-slicing>
 
 =for code :lang<ruby>
-say calories.slice('pear', 'plum').join(','); # Ruby, with ActiveRecord
+puts calories.slice('pear', 'plum')  # Ruby >= 2.5
 =for code :preamble<my %calories>
-say %calories{'pear', 'plum'}:kv.join(',');   # Perl 6 - use :kv adverb
-say %calories<pear plum>:kv.join(',');        # Perl 6 (prettier version)
+say %calories{'pear', 'plum'}:kv.Hash;   # Perl 6 - use :kv adverb
+say %calories<pear plum>:kv.Hash;        # Perl 6 (prettier version)
 =end item
 
 =head3 C<&> Sub
@@ -1035,12 +1035,12 @@ $person.^attributes;
 
 
 Like Ruby, in Perl 6, everything is an object, but not all operations are
-equivalent to C<.send>. Many operators are global functions that use typed
+equivalent to C<.public_send>. Many operators are global functions that use typed
 multi-dispatch (function signatures with types) to decide which implementation
 to use.
 
 =for code :lang<ruby>
-5.send(:+, 3)    # => 8, Ruby
+5.public_send(:+, 3)    # => 8, Ruby
 =for code
 &[+](5, 3)       # => 8, Perl 6, reference to infix addition operator
 &[+].^candidates # Perl 6, lists all signatures for the + operator