Merge pull request #886 from titsuki/index-faq

Add some indexes for FAQ

Author: titsuki

doc/Language/faq.pod6

@@ -31,6 +31,7 @@ of the 'use 6.c' pragma. The next language version (no release date) is to be
 v6.d.
 
 =head2 As a Perl 6 beginner what should I install?
+X<|Rakudo Star (FAQ)>
 
 Mac users can use the latest Rakudo Star DMG binary installer at
 L<http://rakudo.org/downloads/star>
@@ -48,6 +49,7 @@ Or there is an official rakudo star docker image at
 L<https://hub.docker.com/_/rakudo-star/>
 
 =head2 As an intermediate to advanced user I want to track Rakudo development.
+X<|rakudobrew (FAQ)>
 
 Install L<rakudobrew|https://github.com/tadzik/rakudobrew> which resembles
 Perl 5's perlbrew and the equivalent Python and Ruby tools.
@@ -82,12 +84,14 @@ See the '5to6-nutshell' pod under L<https://docs.perl6.org/language/5to6-nutshel
 and related pages.
 
 =head2 I'm a Ruby programmer looking for quickstart type docs?
+X<|Ruby (FAQ)>
 
 See the 'rb-nutshell' pod under L<https://docs.perl6.org/language/rb-nutshell>
 
 =head1 Modules
 
 =head2 Is there a CPAN for Perl 6?
+X<|CPAN (FAQ)>
 
 There isn't yet a module repository for Perl 6 as sophisticated as CPAN. But
 L<modules.perl6.org|https://modules.perl6.org/> has a list of known Perl 6
@@ -98,11 +102,13 @@ L<rakudo|http://rakudo.org/>.
 Support for installing Perl 6 modules from the Perl 5 CPAN is on its way.
 
 =head2 Can I use Perl 5 modules from Perl 6?
+X<|Perl 5 modules (FAQ)>
 
 Yes, with L<Inline::Perl5|https://github.com/niner/Inline-Perl5/>, which works
 well with most Perl 5 modules. It can even run Perl 5 Catalyst and DBI.
 
 =head2 Can I use C and C++ from Perl 6?
+X<|C and C++ (FAQ)>
 
 L<Nativecall|https://docs.perl6.org/language/nativecall> makes this particularly easy.
 
@@ -112,6 +118,8 @@ This is commonly seen on Debian-like systems. You need to install "libfoo-dev"
 to set a sym link for the missing file.
 
 =head2 Where have all the traditional UNIX library functions gone?
+X<|UNIX library functions (FAQ)>
+X<|POSIX (FAQ)>
 
 It's very easy to use Nativecall to access them.
 
@@ -134,6 +142,7 @@ compilation unit.
 =head1 Language Features
 
 =head2 How can I dump Perl 6 data structures (like Perl 5 Data::Dumper and similar)?
+X<|Data::Dumper (FAQ)>
 
 Examples:
 
@@ -248,6 +257,7 @@ Example of a definite return value:
 In this case the final value is thrown away because the return value is already specified.
 
 =head2 How can I extract the values from a Junction?
+X<|Junction (FAQ)>
 
 If you want to extract the values (eigenstates) from a
 L<Junction|/type/Junction>, you are probably doing something wrong, and
@@ -311,6 +321,7 @@ or by calling the C<.item> method on an expression.
 
 
 =head2 Why sigils? Couldn't you do without them?
+X<|sigils (FAQ)>
 
 There are several reasons:
 
@@ -338,6 +349,7 @@ hash key. Use a closure to help it to understand you.
     say "{$foo}<html-tag>";
 
 =head2 Does Perl 6 have coroutines? What about C<yield>?
+X<|coroutine (FAQ)>
 
 Perl 6 has no C<yield> statement like python does, but it does offer similar
 functionality through lazy lists. There are two popular ways to write
@@ -489,6 +501,7 @@ string|/type/Match>.
 C<OpaquePointer> is deprecated and has been replaced with C<Pointer>.
 
 =head1 Perl 6 Implementation
+X<|Perl 6 Implementation (FAQ)>
 
 =head2 What Perl 6 Implementations are available?
 
@@ -505,6 +518,7 @@ machines; it's designed to be a high-level way to create compilers and
 libraries for virtual machines (such as MoarVM and JVM) using Perl 6 syntax.
 
 =head2 What language is NQP written in?
+X<|NQP (FAQ)>
 
 NQP is a mixture of (1) NQP code, (2) whatever language the underlying virtual
 machine is using, (3) some third-party C and Java libraries, and (4) some