Introduce Sets_Bags_and_Mixes.pod

This includes the definitions of Set, Bag, and Mix, as well as the
Set/Bag operators. The pages for Set, Bag and Mix are automatically
generated from the documentation

htmlify.p6

@@ -196,6 +196,10 @@ multi write-type-source($doc) {
 
     say "Writing $what document for $podname ...";
 
+    if !$doc.pod-is-complete {
+        $pod = pod-with-title("$doc.subkinds() $podname", $pod[1..*])
+    }
+
     if $type {
         $pod.content.push: Pod::Block::Named.new(
             name    => 'Image',

lib/Type/Set.pod → lib/Language/Sets_Bags_and_Mixes.pod

@@ -1,35 +1,79 @@
 =begin pod
 
-=TITLE class Set
+=TITLE Sets, Bags, and Mixes
+
+=DESCRIPTION Unique collections and weighted lists in Perl 6
+
+An introduction of what I'm going to talk about.
+
+=head1 class Set
 
     class Set does Setty { }
 
 An immutable set of unique values or objects. These values can be
 accessed via the C<{ }> postcircumfix, and always have a value of either
 C<True> or C<False>. For a mutable set, see L<SetHash>.
 
-=head1 Methods
+=head2 Methods
 
-=head2 total
+=head3 total
 
     method total(Set:D:)
 
 Equivalent to C<elems>, added for consistency with the L<Bag> and L<Mix>
 types
 
-=head1 Operators
-
-All of the following infix operators will take most types as their
-arguments and coerce them to C<Set>s. In some cases, if a type of an
-argument is a L<Bag>, the infix operator will behave in a different but
-analogous way to the one described here.
+=head2 Operators
 
-=head2 sub set
+=head3 sub set
 
     sub set(*@args --> Set)
 
 Creates a C<Set> from the given C<@args>
 
+=head1 class Bag
+
+    class Bag does Baggy { }
+
+An immutable collection of weighted values. These weights are always
+integers, and can be accessed with the C<{ }> postcircumfix. For a
+mutable collection of weighted values, see L<BagHash>.
+
+    bag('a', 'b', 'c', 'a', 'd', 'a')<a> === 3
+
+=head2 Operators
+
+=head3 sub bag
+
+    sub bag(*@args --> Bag)
+
+Creates a new C<Bag> from C<@args>.
+
+=head1 class Mix
+
+    class Mix does Mixy { }
+
+An immutable collection of weighted values. The weights are accessable
+via the C<{ }> postcircumfix. For a mutable collection, see L<MixHash>.
+
+    # TODO: More useful example
+    {a => 1.3, b => 4.8, c => 8}.Mix<b> == 4.8 # True
+
+=head2 Operators
+
+=head3 sub mix
+
+    sub mix(*@args --> Mix)
+
+Creates a new C<Mix> from C<@args>.
+
+=head1 Set/Bag Operators
+
+All of the following infix operators will take most types as their
+arguments and coerce them to C<Set>s. In some cases, if a type of an
+argument is a L<Bag>, the infix operator will behave in a different but
+analogous way to the one described here.
+
 =head2 infix (elem)
 
     multi sub infix:<(elem)>($a, Any $b --> Bool)

lib/Pod/Convenience.pm6

@@ -59,19 +59,23 @@ sub pod-with-title($title, *@blocks) is export {
     Pod::Block::Named.new(
         name => "pod",
         content => [
-            Pod::Block::Named.new(
-                name => "TITLE",
-                content => Array.new(
-                    Pod::Block::Para.new(
-                        content => [$title],
-                    )
-                )
-            ),
+            pod-title($title),
             @blocks.flat,
         ]
     );
 }
 
+sub pod-title($title) is export {
+    Pod::Block::Named.new(
+        name    => "TITLE",
+        content => Array.new(
+            Pod::Block::Para.new(
+                content => [$title],
+            )
+        )
+    )
+}
+
 sub pod-block(*@content) is export {
     Pod::Block::Para.new(:@content);
 }