Document a few more method in Cool

lib/Type/Cool.pod

@@ -414,6 +414,64 @@ leading and trailing whitespace stripped.
     my $stripped = '  abc '.trim-trailing;
     say "<$stripped>";          # <  abc>
 
+=head2 method lc
+
+    method lc()
+
+Coerces the invocant to L<Str|/type/Str>, and returns it case-folded to lower
+case.
+
+    say "ABC".lc;       # abc
+
+=head2 method uc
+
+    method uc()
+
+Coerces the invocant to L<Str|/type/Str>, and returns it case-folded to upper
+case (capital letters).
+
+    say "Abc".uc;       # ABC
+
+=head2 method tc
+
+    method tc()
+
+Coerces the invocant to L<Str|/type/Str>, and returns it with the first letter
+case-folded to title case (or where not available, upper case).
+
+    say "abC".tc;       # AbC
+
+=head2 method tclc
+
+    method tclc()
+
+Coerces the invocant to L<Str|/type/Str>, and returns it with the first letter
+case-folded to title case (or where not available, upper case), and the rest
+of the string case-folded to lower case..
+
+    say 'abC'.tclc;     # Abc
+
+=head2 method wordcase
+
+    method wordcase(:&filter = &tclc, Mu :$where = True)
+
+Coerces the invocant to L<Str|/type/Str>, and filters each word that
+smart-matches against C<$where> through the C<&filter>. With the default
+filter (first character to upper case, rest to lower) and matcher (which
+accepts everything), this title-cases each word:
+
+    say "perl 6 programming".wordcase;      # Perl 6 Programming
+
+With a mather:
+
+    say "have fun working on perl".wordcase(:where({ .chars > 3 }));
+                                            # Have fun Working on Perl
+
+With a customer filter too:
+
+    say "have fun working on perl".wordcase(:filter(&uc), :where({ .chars > 3 }));
+                                            # HAVE fun WORKING on PERL
+
 =head2 method IO
 
     method IO() returns IO::Path:D
@@ -425,11 +483,13 @@ Coerces the invocant to L<IO::Path>.
 =begin comment
 
 TODO: sech, asech, cosech, acosech, cotanh, acotanh, cis, roots, log10,
-unpolar, truncate, fmt, substr, substr-rw, uc, lc, tc,
-tclc, wordcase, chomp, chop, chrs, trans, index, rindex, ords,
+unpolar, truncate, fmt, substr, substr-rw,
+chomp, chop, chrs, trans, index, rindex, ords,
 split, match, comb, lines, words, subst, sprintf, printf, samecase,
 EVAL
 
+TODO: subroutine forms (where they exist)
+
 =end comment
 
 =end pod